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1

8JANVIER 2014 Direction DU PAtriMoine et Des services techniqUes  

E-Print Network [OSTI]

8JANVIER 2014 Direction DU PAtriMoine et Des services techniqUes Direction: régis cAPo Daniel NAHON Pôle espaces verts Jean-Luc GIULIANO Bernard D'AGOSTINO Pôle Parc automobile et téléphonie

Chamroukhi, Faicel

2

Des Moines County, Iowa: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump to:52c8ff988c1Dering Harbor, New York: Energy Resources Jump to:GruneDes

3

Targeted Energy Efficiency Expert Evaluation Report: Neal Smith Federal Building, Des Moines, IA  

SciTech Connect (OSTI)

This report summarizes the energy efficiency measures identified and implemented, and an analysis of the energy savings realized using low-cost/no-cost control system measures identified.

Fernandez, Nicholas; Goddard, James K.; Underhill, Ronald M.; Gowri, Krishnan

2013-03-01T23:59:59.000Z

4

E-Print Network 3.0 - aviation medicine Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Medicine Des Moines IA Des Moines University Osteopathic Medicine Des Moines IA Lake Erie College... Medicine Lake Erie PA Lake Erie College Osteopathic Physician Lake Erie...

5

De moins en moins de pluies sur l'Amazonie  

E-Print Network [OSTI]

-temporelle des précipitations sur l'ensemble du bassin amazonien. Entre Andes et plaine amazonienne Six millions plaines, le climat varie beaucoup d'une région à l'autre. A partir de leur analyse, les chercheurs ont mis dans des Depuis les andes, où il trouve sa source, jusqu'à son embouchure dans l'atlantique, l

6

The University of Iowa College of Engineering Engineering Professional Development  

E-Print Network [OSTI]

Athena GTX Des Moines, IA Caterpillar Mossville, IL Caterpillar Peoria, IL Cerner Kansas City, MO Eaton Rapids, IA Siemens Corporate Research Princeton, NJ Source Allies Des Moines, IA Square D Cedar Rapids

Jacob, Mathews

7

Des Moines, Washington: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump to:52c8ff988c1Dering Harbor, New York: Energy Resources Jump

8

West Des Moines, Iowa: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:SeadovCooperative Jump to: navigation, search Name: West

9

argillacea huebner caterpillars: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Des Moines, IA Caterpillar Mossville, IL Caterpillar Peoria, IL Cerner Kansas City, MO Eaton Naperville, IL Procter &Gamble (Oral B) Iowa City, IA RISE-Cancer Research Center...

10

Recherches sur la rsistance des sols aux mala-dies. XV. Comparaison des populations de  

E-Print Network [OSTI]

le fer joue un rôle dans le mécanisme de résistance des sols de Chateaurenard. L'objet de cet article populations de Pseudomonas fluorescents du sol résistant de Chateaurenard et du sol sensible de Carque- fou sols de Chateaurenard semble réduite. Ils sont en effet moins nombreux en valeur relative et moins

Paris-Sud XI, Université de

11

U.S. DEPARTMENT OF I!NI!RGY EERE PROJECT MANAGEMENT CENTER NFPA...  

Broader source: Energy.gov (indexed) [DOE]

the Iowa Office of Energy STATE: IA Independence) PROJECf TITLE: Magellan Des Moines Biodiesel Terminal Project Page 10f3 Funding Opportunity Announcement Number Procurement...

12

Dust around Type Ia supernovae  

E-Print Network [OSTI]

Dust around Type Ia supernovae Lifan Wang 1,2 LawrenceIa. Subject headings: Supernovae: General, Dust, Extinctionline) bands for Type Ia supernovae. (a), upper panel, shows

Wang, Lifan

2005-01-01T23:59:59.000Z

13

The University of Iowa College of Engineering Engineering Professional Development  

E-Print Network [OSTI]

Davenport Works Riverside, IA Alliant Energy Cedar Rapids, IA Alliant Energy Madison, WI Allsteel Muscatine Crystal Group Hiawatha, IA Dell Engineering Solutions Davenport, IA Dominion Energy Hammond, IN Dyersville Solutions Gurgaon, India EMCO Des Moines, IA Enerhetica Cochabamba, Bolivia ESCO Automation Marion, IA ESCO

Jacob, Mathews

14

The University of Iowa College of Engineering Engineering Professional  

E-Print Network [OSTI]

Davenport Works Riverside, IA Alliant Energy Cedar Rapids, IA Alliant Energy Madison, WI Allsteel Muscatine America Waterloo, IA Dell Engineering Solutions Davenport, IA Dominion Energy Hammond, IN Dyersville Die Engineering Solutions Gurgaon, India EMCO Des Moines, IA Enerhetica Cochabamba, Bolivia EPSCoR Iowa City, IA

Casavant, Tom

15

ISU College of Engineering/Des Moines Area Community College Transfer Plan  

E-Print Network [OSTI]

MAT 217 5 Phys 221 5 Classical Physics I PHY 213 6 *May also transfer for ABE 160, AerE 160, CE 160 AerE Aerospace Engineering CprE Computer Engineering AE Agricultural Engineering ConE Construction

Hu, Hui

16

After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green |  

Broader source: Energy.gov (indexed) [DOE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' ResearchThe Office ofReportingEnergy AdvancedAeroSysNNC_3-25.pdfDepartment of

17

Des Moines Area Community College | OSTI, US Dept of Energy, Office of  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phasesData FilesShape, Density, and Morphology ofConvergenceScientific

18

A Touch of Green for Des Moines' Sherman Hill | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment(October-DecemberBasedToward a MoreA RisingA1A Touch of Green for

19

SEP Success Story: A Touch of Green for Des Moines' Sherman Hill |  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l LPROJECTS IN7 Roadmap forDKT. NO. 14-98-LNG3365Energy 6Department

20

Energy Models for Drawing Signed Graphs Anne-Marie Kermarrec and Afshin Moin  

E-Print Network [OSTI]

Energy Models for Drawing Signed Graphs Anne-Marie Kermarrec and Afshin Moin INRIA Rennes Bretagne-dimensional space. Energy models are the prevalent approach to graph drawing. In this paper, we propose energy) or as negative (repulsive). The existent energy models do not discriminate against edge sign. Hence, they do

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

rencontre du non-lineaire 2009 101 Effets d'un forcage spatial sur la dynamique des fronts  

E-Print Network [OSTI]

. Haudin1 , R. G. El´ias2 , M. G. Clerc2 ,, U. Bortolozzo1 , & S. Residori1 1 Institut Non Lin´eaire de´eris´ee par une propagation du front visant `a diminuer la taille du domaine le moins stable ´energ

Gavilan, Marcel G. Clerc

22

The University of Iowa College of Engineering Engineering Professional Development  

E-Print Network [OSTI]

City, IA Alcon Research Ltd. Irvine, CA Ankh Data Systems Iowa City, IA Athena GTX Des Moines, IA, IL TriCty Energy, LLC Keokuk, IA Tyson Foods Dakota Dunes, SD U.S. HHS Indian Health Service. Kansas City, MO China Agricultural University Beijing, China Civco Medical Instruments Kalona, IA Civco

Casavant, Tom

23

A propos des toponymes de l'epopee de Gesar  

E-Print Network [OSTI]

infini. Il n'en reste pas moins qu'un certainnombre d'enseignements peuvent tre tirs de l'examen des toponymes etdes formes toponymiques contenus dans l'pope, mais ils concernent plus S A propos des toponymes de lpope de Gesar 5 certains procds... bien procder de la cration potique que de lancessit de dfinir le "dcor" de l'pisode, ou bien contenir des allusions etdes rfrences personnelles qui nous chappent en gnral.La plupart des pithtes, prises ou non comme toponymes, dcrivent...

Chayet, Anne

2003-01-01T23:59:59.000Z

24

New approaches for modeling type Ia supernovae  

E-Print Network [OSTI]

runaway in Type Ia supernovae: How to run away? oIgnition in Type Ia Supernovae. II. A Three- dimensionalnumber modeling of type Ia supernovae. I. hydrodynamics.

Zingale, Michael; Almgren, Ann S.; Bell, John B.; Day, Marcus S.; Rendleman, Charles A.; Woosley, Stan

2007-01-01T23:59:59.000Z

25

Recherches rcentes sur la radioactivit du thorium Extraits des mmoires de 0. Angelucci, G.-A. Blanc,  

E-Print Network [OSTI]

173 Recherches récentes sur la radioactivité du thorium Extraits des mémoires de 0. Angelucci, G publication des mémoires, des progrès accomplis dans l'étude de la radioactivité du thorium. L été établis avec une grande vraiselnblance. La famille du thorium est moins com- plètement connuc. Le

Boyer, Edmond

26

Gochimie des olivines plantaires : une approche micro-analytique par EPMA et LA-ICPMS  

E-Print Network [OSTI]

. Méthode : Une série d'olivines d'origines terrestre et extra-terrestre seront analysés : (1) Olivine (achondrites basaltiques, basaltes terrestres). Donc les olivines sont les témoins des processus de formation, Brachinites, HED, SNC) (5) Olivine terrestre (Manteau, Cumulat, Komatiites, MORB, OIB) (6) Olivine produit

Demouchy, Sylvie

27

Communication socitale des enseignes, le consommateur est-il toujours dupe ? le rle de la rputation  

E-Print Network [OSTI]

'améliorer leur image auprès des consommateurs. Néanmoins, face à la profusion d'arguments plus ou moins fondés, l reputation in brand-equity building with societal communication: an attribution theory approach Abstract: Many retailers communicate about their societal engagements to improve their image. Yet, overwhelmed

Paris-Sud XI, Université de

28

IA Blog Archive  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG | Department ofHTS Cable ProjectsHistoryia/802871 IA Blog Archive en DOE and

29

IA News Archive  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG | Department ofHTS Cable ProjectsHistoryia/802871 IA Blog Archive en DOE and66

30

New approaches for modeling type Ia supernovae  

E-Print Network [OSTI]

ich and J. Stein. On the thermonuclear runaway in Type IaSmall-Scale Stability of Thermonuclear Flames o in Type IaS. E. Woosley. The thermonuclear explosion of chandrasekhar

Zingale, Michael; Almgren, Ann S.; Bell, John B.; Day, Marcus S.; Rendleman, Charles A.; Woosley, Stan

2007-01-01T23:59:59.000Z

31

String Landscape and Supernovae Ia  

E-Print Network [OSTI]

We present a model for the triggering of Supernovae Ia (SN Ia) by a phase transition to exact supersymmetry (susy) in the core of a white dwarf star. The model, which accomodates the data on SN Ia and avoids the problems of the standard astrophysical accretion based picture, is based on string landscape ideas and assumes that the decay of the false broken susy vacuum is enhanced at high density. In a slowly expanding susy bubble, the conversion of pairs of fermions to pairs of degenerate scalars releases a significant amount of energy which induces fusion in the surrounding normal matter shell. After cooling, the absence of degeneracy pressure causes the susy bubble to collapse to a black hole of about 0.1 solar mass or to some other stable susy object.

L. Clavelli

2011-10-09T23:59:59.000Z

32

Turbulence-Flame Interactions in Type Ia Supernovae  

E-Print Network [OSTI]

Interactions in Type Ia Supernovae A. J. Aspden 1 , J. B.involved in type Ia supernovae (SN Ia) requires the use of ?generated by RT in type Ia supernovae should obey Bolgiano-

Aspden, Andrew J; Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 50A-1148, Berkeley, CA 94720 (Authors 1, 2 & 3); Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064 (Author 4); Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794 (Author 5)

2008-01-01T23:59:59.000Z

33

Ideal bandpasses for type Ia supernova cosmology  

E-Print Network [OSTI]

diversity of type Ia Supernovae, in preparation. Kim, A.error in measurements of supernovae depends on a periodicABSTRACT To use type Ia supernovae as standard candles for

Davis, Tamara M.; Schmidt, Brian P.; Kim, Alex G.

2005-01-01T23:59:59.000Z

34

Rates and progenitors of type Ia supernovae  

E-Print Network [OSTI]

Supernovae . . . . . . . . . . . . . . . . . . . .Supernovae Found 5.1 Introduction . . . . . . . . . . . .1.2 Non-Type Ia Supernovae . . . . . . . . . . . . . . . 1.3

Wood-Vasey, William Michael

2004-01-01T23:59:59.000Z

35

Dans l'espace Le problme en volume est moins simple qu'il n'en a l'air.  

E-Print Network [OSTI]

Dans l'espace Le problème en volume est moins simple qu'il n'en a l'air. Cela ressemble à une de savon maximise l'aire enserrée par la ficelle (en minimisant l'aire du complémentaire). A New

Pansu, Pierre

36

Type Ia Supernova Carbon Footprints  

E-Print Network [OSTI]

We present convincing evidence of unburned carbon at photospheric velocities in new observations of 5 Type Ia supernovae (SNe Ia) obtained by the Nearby Supernova Factory. These SNe are identified by examining 346 spectra from 124 SNe obtained before +2.5 d relative to maximum. Detections are based on the presence of relatively strong C II 6580 absorption "notches" in multiple spectra of each SN, aided by automated fitting with the SYNAPPS code. Four of the 5 SNe in question are otherwise spectroscopically unremarkable, with ions and ejection velocities typical of SNe Ia, but spectra of the fifth exhibits high-velocity (v > 20,000 km/s) Si II and Ca II features. On the other hand, the light curve properties are preferentially grouped, strongly suggesting a connection between carbon-positivity and broad band light curve/color behavior: Three of the 5 have relatively narrow light curves but also blue colors, and a fourth may be a dust-reddened member of this family. Accounting for signal-to-noise and phase, we ...

Thomas, R C; Aragon, C; Antilogus, P; Bailey, S; Baltay, C; Bongard, S; Buton, C; Canto, A; Childress, M; Chotard, N; Copin, Y; Fakhouri, H K; Gangler, E; Hsiao, E Y; Kerschhaggl, M; Kowalski, M; Loken, S; Nugent, P; Paech, K; Pain, R; Pecontal, E; Pereira, R; Perlmutter, S; Rabinowitz, D; Rigault, M; Rubin, D; Runge, K; Scalzo, R; Smadja, G; Tao, C; Weaver, B A; Wu, C; Brown, P J; Milne, P A

2011-01-01T23:59:59.000Z

37

Low Mach Number Modeling of Type Ia Supernovae. II. Energy Evolution  

E-Print Network [OSTI]

Number Modeling of Type Ia Supernovae. II. Energy EvolutionIa. Subject headings: supernovae: general white dwarfs the ignition of Type Ia supernovae (SNe Ia) is critical to

Almgren, Ann S.; Bell, John B.; Rendleman, Charles A.; Zingale, Mike

2006-01-01T23:59:59.000Z

38

Turbulent Combustion in Type Ia Supernova Models  

E-Print Network [OSTI]

We review the astrophysical modeling of type Ia supernova explosions and describe numerical methods to implement numerical simulations of these events. Some results of such simulations are discussed.

F. K. Roepke; W. Hillebrandt

2006-09-15T23:59:59.000Z

39

The University of Iowa College of Engineering Engineering Professional Development  

E-Print Network [OSTI]

Naperville, IL City of Rock Island Rock Island, IL City of St. Charles St. Charles, IL City of W. Des Moines Great Lakes Dredge and Dock Chicago, IL Habitat for Humanity Iowa City, IA Hall and Hall EngineersAmericanEnergy Sioux City, IA MNTAP: Valley Craft Lake City, MN Moffat and Nichol Long Beach, CA NextERA Energy (FPL

Jacob, Mathews

40

Theoretical cosmic Type Ia supernova rates  

E-Print Network [OSTI]

The aim of this work is the computation of the cosmic Type Ia supernova rates at very high redshifts (z>2). We adopt various progenitor models in order to predict the number of explosions in different scenarios for galaxy formation and to check whether it is possible to select the best delay time distribution model, on the basis of the available observations of Type Ia supernovae. We also computed the Type Ia supernova rate in typical elliptical galaxies of different initial luminous masses and the total amount of iron produced by Type Ia supernovae in each case. It emerges that: it is not easy to select the best delay time distribution scenario from the observational data and this is because the cosmic star formation rate dominates over the distribution function of the delay times; the monolithic collapse scenario predicts an increasing trend of the SN Ia rate at high redshifts whereas the predicted rate in the hierarchical scheme drops dramatically at high redshift; for the elliptical galaxies we note that the predicted maximum of the Type Ia supernova rate depends on the initial galactic mass. The maximum occurs earlier (at about 0.3 Gyr) in the most massive ellipticals, as a consequence of downsizing in star formation. We find that different delay time distributions predict different relations between the Type Ia supernova rate per unit mass at the present time and the color of the parent galaxies and that bluer ellipticals present higher supernova Type Ia rates at the present time.

R. Valiante; F. Matteucci; S. Recchi; F. Calura

2009-03-16T23:59:59.000Z

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Des villes sous influence. Gestion des risques et des catastrophes : des reprsentations  

E-Print Network [OSTI]

Des villes sous influence. Gestion des risques et des catastrophes : des reprsentations l bnfiques (cendres basiques fertilisant les sols dans le cas de certaines ruptions, activits et

Boyer, Edmond

42

THE LOCAL HOSTS OF TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

We use multi-wavelength, matched aperture, integrated photometry from the Galaxy Evolution Explorer (GALEX), the Sloan Digital Sky Survey, and the RC3 to estimate the physical properties of 166 nearby galaxies hosting 168 well-observed Type Ia supernovae (SNe Ia). The ultraviolet (UV) imaging of local SN Ia hosts from GALEX allows a direct comparison with higher-redshift hosts measured at optical wavelengths that correspond to the rest-frame UV. Our data corroborate well-known features that have been seen in other SN Ia samples. Specifically, hosts with active star formation produce brighter and slower SNe Ia on average, and hosts with luminosity-weighted ages older than 1 Gyr produce on average more faint, fast, and fewer bright, slow SNe Ia than younger hosts. New results include that in our sample, the faintest and fastest SNe Ia occur only in galaxies exceeding a stellar mass threshold of approx10{sup 10} M{sub sun}, leading us to conclude that their progenitors must arise in populations that are older and/or more metal rich than the general SN Ia population. A low host extinction subsample hints at a residual trend in peak luminosity with host age, after correcting for light-curve shape, giving the appearance that older hosts produce less-extincted SNe Ia on average. This has implications for cosmological fitting of SNe Ia, and suggests that host age could be useful as a parameter in the fitting. Converting host mass to metallicity and computing {sup 56}Ni mass from the supernova light curves, we find that our local sample is consistent with a model that predicts a shallow trend between stellar metallicity and the {sup 56}Ni mass that powers the explosion, but we cannot rule out the absence of a trend. We measure a correlation between {sup 56}Ni mass and host age in the local universe that is shallower and not as significant as that seen at higher redshifts. The details of the age-{sup 56}Ni mass correlations at low and higher redshift imply a luminosity-weighted age threshold of approx3 Gyr for SN Ia hosts, above which they are less likely to produce SNe Ia with {sup 56}Ni masses above approx0.5 M{sub sun}.

Neill, James D.; Martin, D. Christopher; Barlow, Tom A.; Foster, Karl; Friedman, Peter G.; Morrissey, Patrick; Wyder, Ted K. [California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125 (United States); Sullivan, Mark [University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH (United Kingdom); Howell, D. Andrew [Las Cumbres Observatory Global Telescope Network, 6740 Cortona Dr., Suite 102, Goleta, CA 93117 (United States); Conley, Alex [Department of Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ONM5S3H8 (Canada); Seibert, Mark; Madore, Barry F. [The Observatories of the Carnegie Institute of Washington, 813 Santa Barbara Street, Pasadena, CA, 91101 (United States); Neff, Susan G. [Laboratory for Astronomy and Solar Physics, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Schiminovich, David [Department of Astronomy, Columbia University, New York, NY 10027 (United States); Bianchi, Luciana [Center for Astrophysical Sciences, Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218 (United States); Donas, Jose; Milliard, Bruno [Laboratoire d'Astrophysique de Marseille, BP 8, Traverse du Siphon, 13376 Marseille Cedex 12 (France); Heckman, Timothy M. [Department of Physics and Astronomy, Johns Hopkins University, Homewood Campus, Baltimore, MD 21218 (United States); Lee, Young-Wook [Center for Space Astrophysics, Yonsei University, Seoul 120-749 (Korea, Republic of); Rich, R. Michael [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States)

2009-12-20T23:59:59.000Z

43

Supersoft Sources as SN Ia Progenitors  

E-Print Network [OSTI]

of the existence of supersoft X­ray sources. It is argued that SNe Ia are thermonuclear explosions of accreting C is that they represent thermonuclear disruptions of mass accreting white dwarfs (WDs). Thus, the basic ingredient

Greiner, Jochen

44

ETODOS NUM ERICOS EN INGENIER IA  

E-Print Network [OSTI]

CONSERVATIVOS ENERG #19; IA-MOMENTO Jos#19;e M. Goicolea Ruig#19;omez y Juan Carlos Garc#19;#16;a Orden EscuelaM #19; ETODOS NUM #19; ERICOS EN INGENIER #19; IA R. Abascal, J. Dom#19;#16;nguez y G. Bugeda (Eds.upm.es Palabras clave: Din#19;amica no lineal, mecanismos, sistemas multicuerpo exibles, energ#19;#16;a- momento

Romero, Ignacio

45

The 3rd International Conference of IIR on Magnetic Refrigeration at Room Temperature, Des Moines, Iowa, U.S.A, 11-15 May 2009  

E-Print Network [OSTI]

REFRIGERATION SYSTEMS USING DESIGN OF EXPERIMENTS J. ROUDAUT1,2,* , H. BOUCHEKARA1 , A. KEDOUS-LEBOUC1 , J Refrigeration (AMRR) system. The heat transfer fluid is water, the regenerator consists of stacked gadolinium avoid using greenhouse gases and lower energy consumption by 20-30% over conventional technology

Boyer, Edmond

46

Type Ia Supernova Intrinsic Magnitude Dispersion and the Fitting of Cosmological Parameters  

E-Print Network [OSTI]

Applied to Type Ia supernovae, my strategy provides adata sets. Subject headings: Supernovae: Data Analysis andhomogeneous nature of Type Ia supernovae (SNe Ia) makes them

Kim, Alex G

2011-01-01T23:59:59.000Z

47

Verifying the Cosmological Utility of Type Ia Supernovae: Implications of a Dispersion in the Ultraviolet Spectra  

E-Print Network [OSTI]

Utility of Type Ia Supernovae: Implications of a Dispersionheadings: surveys supernovae: general cosmologicalparameters Introduction Supernovae of Type Ia (SNe Ia) are

2008-01-01T23:59:59.000Z

48

Closest Type Ia Supernova in Decades Solves a Cosmic Mystery  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PTF 11kly as it appeared in the nearby M101 galaxy. (Images: Peter Nugent) Type Ia supernovae (SN Ia's) are the extraordinarily bright and remarkably similar "standard candles"...

49

Probing Cosmological Isotropy With Type IA Supernovae  

E-Print Network [OSTI]

We investigate the validity of the Cosmological Principle by mapping the cosmological parameters $H_0$ and $q_0$ through the celestial sphere. In our analysis, performed in a low-redshift regime to follow a model-independent approach, we use two compilations of type Ia Supernovae (SNe Ia), namely the Union2.1 and the JLA datasets. Firstly, we show that the angular distributions for both SNe Ia datasets are statistically anisotropic at high confidence level ($p$-value $<$ 0.0001), in particular the JLA sample. Then we find that the cosmic expansion and acceleration are mainly of dipolar type, with maximal anisotropic expansion [acceleration] pointing towards $(l,b) \\simeq (326^{\\circ},12^{\\circ})$ [$(l,b) \\simeq (174^{\\circ},27^{\\circ})$], and $(l,b) \\simeq (58^{\\circ},-60^{\\circ})$ [$(l,b) \\simeq (225^{\\circ},51^{\\circ})$] for the Union2.1 and JLA data, respectively. Secondly, we use a geometrical method to test the hypothesis that the non-uniformly distributed SNe Ia events could introduce anisotropic imp...

Bengaly, C A P; Alcaniz, J S

2015-01-01T23:59:59.000Z

50

China Today IAS 2123.001  

E-Print Network [OSTI]

China Today IAS 2123.001 Kevin Carrico Tuesdays & Thursdays 10:30 am -11:45 am Approved for Non-Western culture credit Everyone knows that China today is a "rising superpower," but the real story of China's modern history is considerably more complex. This course looks beyond the headlines to rediscover China

Oklahoma, University of

51

Comparison of Recent SnIa datasets  

E-Print Network [OSTI]

We rank the six latest Type Ia supernova (SnIa) datasets (Constitution (C), Union (U), ESSENCE (Davis) (E), Gold06 (G), SNLS 1yr (S) and SDSS-II (D)) in the context of the Chevalier-Polarski-Linder (CPL) parametrization $w(a)=w_0+w_1 (1-a)$, according to their Figure of Merit (FoM), their consistency with the cosmological constant ($\\Lambda$CDM), their consistency with standard rulers (Cosmic Microwave Background (CMB) and Baryon Acoustic Oscillations (BAO)) and their mutual consistency. We find a significant improvement of the FoM (defined as the inverse area of the 95.4% parameter contour) with the number of SnIa of these datasets ((C) highest FoM, (U), (G), (D), (E), (S) lowest FoM). Standard rulers (CMB+BAO) have a better FoM by about a factor of 3, compared to the highest FoM SnIa dataset (C). We also find that the ranking sequence based on consistency with $\\Lambda$CDM is identical with the corresponding ranking based on consistency with standard rulers ((S) most consistent, (D), (C), (E), (U), (G) least consistent). The ranking sequence of the datasets however changes when we consider the consistency with an expansion history corresponding to evolving dark energy $(w_0,w_1)=(-1.4,2)$ crossing the phantom divide line $w=-1$ (it is practically reversed to (G), (U), (E), (S), (D), (C)). The SALT2 and MLCS2k2 fitters are also compared and some peculiar features of the SDSS-II dataset when standardized with the MLCS2k2 fitter are pointed out. Finally, we construct a statistic to estimate the internal consistency of a collection of SnIa datasets. We find that even though there is good consistency among most samples taken from the above datasets, this consistency decreases significantly when the Gold06 (G) dataset is included in the sample.

J. C. Bueno Sanchez; S. Nesseris; L. Perivolaropoulos

2009-10-01T23:59:59.000Z

52

Utilisation des dfibrillateurs  

ScienceCinema (OSTI)

Information faite par le service medical et le service des pompiers sur l'utilisation des defibrillateurs.

None

2011-10-06T23:59:59.000Z

53

CX-006500: Categorical Exclusion Determination | Department of...  

Broader source: Energy.gov (indexed) [DOE]

Determination CX-006500: Categorical Exclusion Determination Magellan Des Moines Biodiesel Terminal Project CX(s) Applied: B5.1 Date: 09062011 Location(s): Des Moines, Iowa...

54

SHOCK BREAKOUT FROM TYPE Ia SUPERNOVA  

SciTech Connect (OSTI)

The mode of explosive burning in Type Ia supernovae (SNe Ia) remains an outstanding problem. It is generally thought to begin as a subsonic deflagration, but this may transition into a supersonic detonation (the delayed detonation transition, DDT). We argue that this transition leads to a breakout shock, which would provide the first unambiguous evidence that DDTs occur. Its main features are a hard X-ray flash (approx20 keV) lasting approx10{sup -2} s with a total radiated energy of approx10{sup 40} erg, followed by a cooling tail. This creates a distinct feature in the visual light curve, which is separate from the nickel decay. This cooling tail has a maximum absolute visual magnitude of M{sub V} approx -9 to -10 at approx1 day, which depends most sensitively on the white dwarf radius at the time of the DDT. As the thermal diffusion wave moves in, the composition of these surface layers may be imprinted as spectral features, which would help to discern between SN Ia progenitor models. Since this feature should accompany every SNe Ia, future deep surveys (e.g., m = 24) will see it out to a distance of approx80 Mpc, giving a maximum rate of approx60 yr{sup -1}. Archival data sets can also be used to study the early rise dictated by the shock heating (at approx20 days before maximum B-band light). A similar and slightly brighter event may also accompany core bounce during the accretion-induced collapse to a neutron star, but with a lower occurrence rate.

Piro, Anthony L.; Chang, Philip; Weinberg, Nevin N., E-mail: tpiro@astro.berkeley.ed, E-mail: pchang@astro.berkeley.ed, E-mail: nweinberg@astro.berkeley.ed [Astronomy Department and Theoretical Astrophysics Center, University of California, Berkeley, CA 94720 (United States)

2010-01-01T23:59:59.000Z

55

The University of Iowa College of Engineering Engineering Professional Development  

E-Print Network [OSTI]

Naperville, IL City of Rock Island Rock Island, IL City of St. Charles St. Charles, IL City of W. Des Moines and Marshall Grapevine, TX Great Lakes Dredge and Dock Chicago, IL Habitat for Humanity Iowa City, IA Hall MidAmerican Energy Sioux Falls, SD MNTAP: Valley Craft Lake City, MN Moffat and Nichol Long Beach, CA

Casavant, Tom

56

Type Ia Supernova Hubble Residuals and Host-Galaxy Properties  

E-Print Network [OSTI]

magnitudes of type Ia supernovae from multi-band lightsuch an analysis on the supernovae of the Nearby Supernovaheadings: distance scale, supernovae: general 1 Physics

Kim, A. G.

2014-01-01T23:59:59.000Z

57

K-corrections and spectral templates of Type Ia supernovae  

E-Print Network [OSTI]

templates of Type Ia supernovae E. Y. Hsiao 1 , A. Conleyobservations of low-redshift supernovae are less a?ected byobservations, stars: supernovae Department of Physics and

Hsiao, E. Y.

2008-01-01T23:59:59.000Z

58

Constraining Cosmic Evolution of Type Ia Supernovae  

SciTech Connect (OSTI)

We present the first large-scale effort of creating composite spectra of high-redshift type Ia supernovae (SNe Ia) and comparing them to low-redshift counterparts. Through the ESSENCE project, we have obtained 107 spectra of 88 high-redshift SNe Ia with excellent light-curve information. In addition, we have obtained 397 spectra of low-redshift SNe through a multiple-decade effort at Lick and Keck Observatories, and we have used 45 ultraviolet spectra obtained by HST/IUE. The low-redshift spectra act as a control sample when comparing to the ESSENCE spectra. In all instances, the ESSENCE and Lick composite spectra appear very similar. The addition of galaxy light to the Lick composite spectra allows a nearly perfect match of the overall spectral-energy distribution with the ESSENCE composite spectra, indicating that the high-redshift SNe are more contaminated with host-galaxy light than their low-redshift counterparts. This is caused by observing objects at all redshifts with similar slit widths, which corresponds to different projected distances. After correcting for the galaxy-light contamination, subtle differences in the spectra remain. We have estimated the systematic errors when using current spectral templates for K-corrections to be {approx}0.02 mag. The variance in the composite spectra give an estimate of the intrinsic variance in low-redshift maximum-light SN spectra of {approx}3% in the optical and growing toward the ultraviolet. The difference between the maximum-light low and high-redshift spectra constrain SN evolution between our samples to be < 10% in the rest-frame optical.

Foley, Ryan J.; Filippenko, Alexei V.; Aguilera, C.; Becker, A.C.; Blondin, S.; Challis, P.; Clocchiatti, A.; Covarrubias, R.; Davis, T.M.; Garnavich, P.M.; Jha, S.; Kirshner, R.P.; Krisciunas, K.; Leibundgut, B.; Li, W.; Matheson, T.; Miceli, A.; Miknaitis, G.; Pignata, G.; Rest, A.; Riess, A.G.; /UC, Berkeley, Astron. Dept. /Cerro-Tololo InterAmerican Obs. /Washington U., Seattle, Astron. Dept. /Harvard-Smithsonian Ctr. Astrophys. /Chile U., Catolica /Bohr Inst. /Notre Dame U. /KIPAC, Menlo Park /Texas A-M /European Southern Observ. /NOAO, Tucson /Fermilab /Chile U., Santiago /Harvard U., Phys. Dept. /Baltimore, Space Telescope Sci. /Johns Hopkins U. /Res. Sch. Astron. Astrophys., Weston Creek /Stockholm U. /Hawaii U. /Illinois U., Urbana, Astron. Dept.

2008-02-13T23:59:59.000Z

59

Category:Mason, IA | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarreis aCallahanWind FarmAdd a newISGANMagnetotelluricsIA"

60

Rolling Hills (IA) | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-g Grant ofRichardton Abbey Wind Farm It isRockwall,SectorIA) Jump to:

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Steamboat IA Geothermal Facility | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-g GrantAtlas (PACA RegionSpringviewNameGeothermal Facility JumpIA

62

Plasma Redshift, Time Dilation, and Supernovas Ia  

E-Print Network [OSTI]

The measurements of the absolute magnitudes and redshifts of supernovas Ia show that conventional physics, which includes plasma redshift, fully explains the observed magnitude-redshift relation of the supernovas. The only parameter that is required is the Hubble constant, which in principle can be measured independently. The contemporary theory of the expansion of the universe (Big Bang) requires in addition to the Hubble constant several adjustable parameters, such as an initial explosion, the dark matter parameter, and a time adjustable dark energy parameter for explaining the supernova Ia data. The contemporary Big Bang theory also requires time dilation of distant events as an inherent premise. The contention is usually that the light curves of distant supernovas show or even prove the time dilation. In the present article, we challenge this assertion. We document and show that the previously reported data in fact indicate that there is no time dilation. The data reported by Riess et al. in the Astrophysical Journal in June 2004 confirm the plasma redshift, the absence of time dilation, dark matter, and dark energy.

Ari Brynjolfsson

2004-07-20T23:59:59.000Z

63

Three-dimensional numerical simulations of Rayleigh-Taylor unstable flames in type Ia supernovae  

E-Print Network [OSTI]

Unstable Flames in Type Ia Supernovae M. Zingale 1 , S. E.Subject headings: supernovae: general white dwarfs ame in Type Ia supernovae (SNe Ia) is well recognized (M

Zingale, M.; Woosley, S.E.; Rendleman, C.A.; Day, M.S.; Bell, J.B.

2005-01-01T23:59:59.000Z

64

Improving Type Ia Supernova Standard Candle Cosmology Measurements Using Observations of Early-Type Host Galaxies  

E-Print Network [OSTI]

Host Galaxies of Type Ia Supernovae Introduction SN Ia Hosts109 C HAPTER 1 Cosmology, Type Ia Supernovae and HostGalaxies Observations of supernovae have played a role in

Meyers, Joshua Evan

2012-01-01T23:59:59.000Z

65

Diversity of Type Ia Supernovae Imprinted in Chemical Abundances  

E-Print Network [OSTI]

A time delay of Type Ia supernova (SN Ia) explosions hinders the imprint of their nucleosynthesis on stellar abundances. However, some occasional cases give birth to stars that avoid enrichment of their chemical compositions by massive stars and thereby exhibit a SN Ia-like elemental feature including a very low [Mg/Fe] (~-1). We highlight the elemental feature of Fe-group elements for two low-Mg/Fe objects detected in nearby galaxies, and propose the presence of a class of SNe Ia that yield the low abundance ratios of [Cr,Mn,Ni/Fe]. Our novel models of chemical evolution reveal that our proposed class of SNe Ia (slow SNe Ia) is associated with ones exploding on a long timescale after their stellar birth, and gives a significant impact on the chemical enrichment in the Large Magellanic Cloud (LMC). In the Galaxy, on the other hand, this effect is unseen due to the overwhelming enrichment by the major class of SNe Ia that explode promptly (prompt SNe Ia) and eject a large amount of Fe-group elements. This nice...

Tsujimoto, Takuji

2012-01-01T23:59:59.000Z

66

Intermediate-band Photometry of Type Ia Supernovae  

E-Print Network [OSTI]

We present optical light curves of five Type Ia supernovae (2002er, 2002fk, 2003cg, 2003du, 2003fk). The photometric observations were performed in a set of intermediate-band filters. SNe 2002er, 2003du appear to be normal SN Ia events with similar light curve shapes, while SN 2003kf shows the behavior of a brighter SN Ia with slower decline rate after maximum. The light curves of SN 2003cg is unusual; they show a fast rise and dramatic decline near maximum and do not display secondary peak at longer wavelengths during 15-30 days after maximum light. This suggests that SN 2003cg is likely to be an intrinsically subluminous, 91bg-like SN Ia. Exploration of SN Ia feature lines through intermediate-band photometry is briefly discussed.

Wang, X; Zhang, T; Li, Z; Wang, Xiaofeng; Zhou, Xu; Zhang, Tianmeng; Li, Zongwei

2004-01-01T23:59:59.000Z

67

Direct numerical simulations of type Ia supernovae flames I: The landau-darrieus instability  

E-Print Network [OSTI]

Simulations of Type Ia Supernovae Flames I: The Landau-Subject headings: supernovae: general white dwarfs could occur in Type Ia supernovae (Niemeyer & Woosley 1997),

Bell, J.B.; Day, M.S.; Rendleman, C.A.; Woosley, S.E.; Zingale, M.

2003-01-01T23:59:59.000Z

68

DIVERSITY OF TYPE Ia SUPERNOVAE IMPRINTED IN CHEMICAL ABUNDANCES  

SciTech Connect (OSTI)

A time delay of Type Ia supernova (SN Ia) explosions hinders the imprint of their nucleosynthesis on stellar abundances. However, some occasional cases give birth to stars that avoid enrichment of their chemical compositions by massive stars and thereby exhibit an SN-Ia-like elemental feature including a very low [Mg/Fe] ( Almost-Equal-To - 1). We highlight the elemental feature of Fe-group elements for two low-Mg/Fe objects detected in nearby galaxies, and propose the presence of a class of SNe Ia that yield the low abundance ratios of [Cr, Mn, Ni/Fe]. Our novel models of chemical evolution reveal that our proposed class of SNe Ia (slow SNe Ia) is associated with ones exploding on a long timescale after their stellar birth and give a significant impact on the chemical enrichment in the Large Magellanic Cloud (LMC). In the Galaxy, on the other hand, this effect is unseen due to the overwhelming enrichment by the major class of SNe Ia that explode promptly (prompt SNe Ia) and eject a large amount of Fe-group elements. This nicely explains the different [Cr, Mn, Ni/Fe] features between the two galaxies as well as the puzzling feature seen in the LMC stars exhibiting very low Ca but normal Mg abundances. Furthermore, the corresponding channel of slow SN Ia is exemplified by performing detailed nucleosynthesis calculations in the scheme of SNe Ia resulting from a 0.8 + 0.6 M{sub Sun} white dwarf merger.

Tsujimoto, Takuji [National Astronomical Observatory of Japan, Mitaka-shi, Tokyo 181-8588 (Japan); Shigeyama, Toshikazu, E-mail: taku.tsujimoto@nao.ac.jp [Research Center for the Early Universe, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)

2012-12-01T23:59:59.000Z

69

ANALYSE DES DETERMINANTS DE LA GESTION DES RESULTATS : CAS DES FIRMES CANADIENNES FRANCAISES ET TUNISIENNES  

E-Print Network [OSTI]

- 1 - ANALYSE DES DETERMINANTS DE LA GESTION DES RESULTATS : CAS DES FIRMES CANADIENNES FRANCAISES)" #12;- 2 - ANALYSE DES DETERMINANTS DE LA GESTION DES RESULTATS : CAS DES FIRMES CANADIENNES FRANCAISES article sans l'aval écrit des auteurs'' "Please do not cote wihout authors' written permission" Adresse de

Paris-Sud XI, Université de

70

V-059: MoinMoin Multiple Vulnerabilities | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

being used to write files. This can be exploited to overwrite arbitrary files via directory traversal sequences. 2) The application allows the upload of files with arbitrary...

71

The Photometric Properties of Nearby Type Ia Supernovae  

E-Print Network [OSTI]

The Rise-Time Distribution of Nearby Type Ia Supernovae 3.1Highlight: The Physics of Supernovae, ed. W. Hillebrandt &1.1 Supernovae . . . . . . . . . . . . . . 1.1.1

Ganeshalingam, Mohan

2012-01-01T23:59:59.000Z

72

Single-Degenerate Type Ia Supernovae Are Preferentially Overluminous  

E-Print Network [OSTI]

Recent observational and theoretical progress has favored merging and helium-accreting sub-Chandrasekhar mass white dwarfs in the double-degenerate and the double-detonation channels, respectively, as the most promising progenitors of normal Type Ia supernovae (SNe Ia). Thus the fate of rapidly-accreting Chandrasekhar mass white dwarfs in the single-degenerate channel remains more mysterious then ever. In this paper, we clarify the nature of ignition in Chandrasekhar-mass single-degenerate SNe Ia by analytically deriving the existence of a characteristic length scale which establishes a transition from central ignitions to buoyancy-driven ignitions. Using this criterion, combined with data from three-dimensional simulations of convection and ignition, we demonstrate that the overwhelming majority of ignition events within Chandrasekhar-mass white dwarfs in the single-degenerate channel are buoyancy-driven, and consequently lack a vigorous deflagration phase. We thus infer that single-degenerate SNe Ia are gen...

Fisher, Robert

2015-01-01T23:59:59.000Z

73

CIRCUMSTELLAR ABSORPTION IN DOUBLE DETONATION TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

Upon formation, degenerate He core white dwarfs are surrounded by a radiative H-rich layer primarily supported by ideal gas pressure. In this Letter, we examine the effect of this H-rich layer on mass transfer in He+C/O double white dwarf binaries that will eventually merge and possibly yield a Type Ia supernova (SN Ia) in the double detonation scenario. Because its thermal profile and equation of state differ from the underlying He core, the H-rich layer is transferred stably onto the C/O white dwarf prior to the He core's tidal disruption. We find that this material is ejected from the binary system and sweeps up the surrounding interstellar medium hundreds to thousands of years before the SN Ia. The close match between the resulting circumstellar medium profiles and values inferred from recent observations of circumstellar absorption in SNe Ia gives further credence to the resurgent double detonation scenario.

Shen, Ken J. [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Guillochon, James [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Foley, Ryan J., E-mail: kenshen@astro.berkeley.edu [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2013-06-20T23:59:59.000Z

74

TYPE Ia SUPERNOVAE STRONGLY INTERACTING WITH THEIR CIRCUMSTELLAR MEDIUM  

SciTech Connect (OSTI)

Owing to their utility for measurements of cosmic acceleration, Type Ia supernovae (SNe Ia) are perhaps the best-studied class of SNe, yet the progenitor systems of these explosions largely remain a mystery. A rare subclass of SNe Ia shows evidence of strong interaction with their circumstellar medium (CSM), and in particular, a hydrogen-rich CSM; we refer to them as SNe Ia-CSM. In the first systematic search for such systems, we have identified 16 SNe Ia-CSM, and here we present new spectra of 13 of them. Six SNe Ia-CSM have been well studied previously, three were previously known but are analyzed in depth for the first time here, and seven are new discoveries from the Palomar Transient Factory. The spectra of all SNe Ia-CSM are dominated by H{alpha} emission (with widths of {approx}2000 km s{sup -1}) and exhibit large H{alpha}/H{beta} intensity ratios (perhaps due to collisional excitation of hydrogen via the SN ejecta overtaking slower-moving CSM shells); moreover, they have an almost complete lack of He I emission. They also show possible evidence of dust formation through a decrease in the red wing of H{alpha} 75-100 days past maximum brightness, and nearly all SNe Ia-CSM exhibit strong Na I D absorption from the host galaxy. The absolute magnitudes (uncorrected for host-galaxy extinction) of SNe Ia-CSM are found to be -21.3 mag {<=} M{sub R} {<=} -19 mag, and they also seem to show ultraviolet emission at early times and strong infrared emission at late times (but no detected radio or X-ray emission). Finally, the host galaxies of SNe Ia-CSM are all late-type spirals similar to the Milky Way, or dwarf irregulars like the Large Magellanic Cloud, which implies that these objects come from a relatively young stellar population. This work represents the most detailed analysis of the SN Ia-CSM class to date.

Silverman, Jeffrey M. [Department of Astronomy, University of Texas, Austin, TX 78712-0259 (United States); Nugent, Peter E. [Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States); Gal-Yam, Avishay; Arcavi, Iair; Ben-Ami, Sagi [Benoziyo Center for Astrophysics, Weizmann Institute of Science, Rehovot 76100 (Israel); Sullivan, Mark [School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ (United Kingdom); Howell, D. Andrew; Graham, Melissa L. [Las Cumbres Observatory Global Telescope Network, Goleta, CA 93117 (United States); Filippenko, Alexei V.; Bloom, Joshua S.; Cenko, S. Bradley; Clubb, Kelsey I. [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Cao, Yi; Horesh, Assaf; Kulkarni, Shrinivas R. [Cahill Center for Astrophysics, California Institute of Technology, Pasadena, CA 91125 (United States); Chornock, Ryan; Foley, Ryan J. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Coil, Alison L. [Department of Physics, University of California, San Diego, La Jolla, CA 92093 (United States); Griffith, Christopher V. [Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States); Kasliwal, Mansi M., E-mail: jsilverman@astro.as.utexas.edu [Observatories of the Carnegie Institution of Science, Pasadena, CA 91101 (United States); and others

2013-07-01T23:59:59.000Z

75

EARLY EMISSION FROM TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

A unique feature of deflagration-to-detonation (DDT) white dwarf explosion models of supernovae of type Ia is the presence of a strong shock wave propagating through the outer envelope. We consider the early emission expected in such models, which is produced by the expanding shock-heated outer part of the ejecta and precedes the emission driven by radioactive decay. We expand on earlier analyses by considering the modification of the pre-detonation density profile by the weak shocks generated during the deflagration phase, the time evolution of the opacity, and the deviation of the post-shock equation of state from that obtained for radiation pressure domination. A simple analytic model is presented and shown to provide an acceptable approximation to the results of one-dimensional numerical DDT simulations. Our analysis predicts a {approx}10{sup 3} s long UV/optical flash with a luminosity of {approx}1 to {approx}3 Multiplication-Sign 10{sup 39} erg s{sup -1}. Lower luminosity corresponds to faster (turbulent) deflagration velocity. The luminosity of the UV flash is predicted to be strongly suppressed at t > t{sub drop} {approx} 1 hr due to the deviation from pure radiation domination.

Rabinak, Itay; Waxman, Eli [Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 76100 (Israel); Livne, Eli, E-mail: itay.rabinak@weizmann.ac.il [Racah Institute of Physics, Hebrew University, Jerusalem (Israel)

2012-09-20T23:59:59.000Z

76

Simulations of Turbulent Thermonuclear Burning in Type Ia Supernovae  

E-Print Network [OSTI]

Type Ia supernovae have recently received considerable attention because it appears that they can be used as "standard candles" to measure cosmic distances out to billions of light years away from us. Observations of type Ia supernovae seem to indicate that we are living in a universe that started to accelerate its expansion when it was about half its present age. These conclusions rest primarily on phenomenological models which, however, lack proper theoretical understanding, mainly because the explosion process, initiated by thermonuclear fusion of carbon and oxygen into heavier elements, is difficult to simulate even on supercomputers. Here, we investigate a new way of modeling turbulent thermonuclear deflagration fronts in white dwarfs undergoing a type Ia supernova explosion. Our approach is based on a level set method which treats the front as a mathematical discontinuity and allows for full coupling between the front geometry and the flow field. New results of the method applied to the problem of type Ia supernovae are obtained. It is shown that in 2-D with high spatial resolution and a physically motivated subgrid scale model for the nuclear flames numerically "converged" results can be obtained, but for most initial conditions the stars do not explode. In contrast, simulations in 3-D, do give the desired explosions and many of their properties, such as the explosion energies, lightcurves and nucleosynthesis products, are in very good agreement with observed type Ia supernovae.

W. Hillebrandt; M. Reinecke; W. Schmidt; F. K. Roepke; C. Travaglio; J. C. Niemeyer

2004-05-11T23:59:59.000Z

77

Gestion des aleas : utilisation des incertitudes en tp  

E-Print Network [OSTI]

ENSIM 4A Gestion des aleas : utilisation des incertitudes en tp http ://umtice,version4-4Jul2014 #12;Table des mati`eres 1 Methode de travail 3 2 dictionnaire 6 3 Gestion des aleas 8 3.1 Les ceintures de gestion des aleas . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3

Boyer, Edmond

78

Diagnosing multiplicative error by lensing magnification of type Ia supernovae  

E-Print Network [OSTI]

Weak lensing causes spatially coherent fluctuations in flux of type Ia supernovae (SNe Ia). This lensing magnification allows for weak lensing measurement independent of cosmic shear. It is free of shape measurement errors associated with cosmic shear and can therefore be used to diagnose and calibrate multiplicative error. Although this lensing magnification is difficult to measure accurately in auto correlation, its cross correlation with cosmic shear and galaxy distribution in overlapping area can be measured to significantly higher accuracy. Therefore these cross correlations can put useful constraint on multiplicative error, and the obtained constraint is free of cosmic variance in weak lensing field. We present two methods implementing this idea and estimate their performances. We find that, with $\\sim 1$ million SNe Ia that can be achieved by the proposed D2k survey with the LSST telescope (Zhan et al. 2008), multiplicative error of $\\sim 0.5\\%$ for source galaxies at $z_s\\sim 1$ can be detected and la...

Zhang, Pengjie

2015-01-01T23:59:59.000Z

79

K-corrections and extinction corrections for Type Ia supernovae  

SciTech Connect (OSTI)

The measurement of the cosmological parameters from Type Ia supernovae hinges on our ability to compare nearby and distant supernovae accurately. Here we present an advance on a method for performing generalized K-corrections for Type Ia supernovae which allows us to compare these objects from the UV to near-IR over the redshift range 0 < z < 2. We discuss the errors currently associated with this method and how future data can improve upon it significantly. We also examine the effects of reddening on the K-corrections and the light curves of Type Ia supernovae. Finally, we provide a few examples of how these techniques affect our current understanding of a sample of both nearby and distant supernovae.

Nugent, Peter; Kim, Alex; Perlmutter, Saul

2002-05-21T23:59:59.000Z

80

SPECTROSCOPY OF TYPE Ia SUPERNOVAE BY THE CARNEGIE SUPERNOVA PROJECT  

SciTech Connect (OSTI)

This is the first release of optical spectroscopic data of low-redshift Type Ia supernovae (SNe Ia) by the Carnegie Supernova Project including 604 previously unpublished spectra of 93 SNe Ia. The observations cover a range of phases from 12 days before to over 150 days after the time of B-band maximum light. With the addition of 228 near-maximum spectra from the literature, we study the diversity among SNe Ia in a quantitative manner. For that purpose, spectroscopic parameters are employed such as expansion velocities from spectral line blueshifts and pseudo-equivalent widths (pW). The values of those parameters at maximum light are obtained for 78 objects, thus providing a characterization of SNe Ia that may help to improve our understanding of the properties of the exploding systems and the thermonuclear flame propagation. Two objects, namely, SNe 2005M and 2006is, stand out from the sample by showing peculiar Si II and S II velocities but otherwise standard velocities for the rest of the ions. We further study the correlations between spectroscopic and photometric parameters such as light-curve decline rate and color. In agreement with previous studies, we find that the pW of Si II absorption features are very good indicators of light-curve decline rate. Furthermore, we demonstrate that parameters such as pW2 (Si II 4130) and pW6 (Si II 5972) provide precise calibrations of the peak B-band luminosity with dispersions of Almost-Equal-To 0.15 mag. In the search for a secondary parameter in the calibration of peak luminosity for SNe Ia, we find a Almost-Equal-To 2{sigma}-3{sigma} correlation between B-band Hubble residuals and the velocity at maximum light of S II and Si II lines.

Folatelli, Gaston [Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), Todai Institutes for Advanced Study, the University of Tokyo, 277-8583 Kashiwa (Japan); Morrell, Nidia; Phillips, Mark M.; Hsiao, Eric; Campillay, Abdo; Contreras, Carlos; Castellon, Sergio; Roth, Miguel [Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena (Chile); Hamuy, Mario; Anderson, Joseph P. [Departamento de Astronomia, Universidad de Chile, Casilla 36-D, Santiago (Chile); Krzeminski, Wojtek [N. Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warszawa (Poland); Stritzinger, Maximilian [Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark); Burns, Christopher R.; Freedman, Wendy L.; Madore, Barry F.; Murphy, David; Persson, S. E. [Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Prieto, Jose L. [Department of Astrophysical Sciences, Princeton University, 4 Ivy Ln., Princeton, NJ 08544 (United States); Suntzeff, Nicholas B.; Krisciunas, Kevin, E-mail: gaston.folatelli@ipmu.jp [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843 (United States); and others

2013-08-10T23:59:59.000Z

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

UV Spectroscopy of Type Ia Supernovae at Low- and High-Redshift  

E-Print Network [OSTI]

Spectroscopy of Type Ia Supernovae at Low- and High-RedshiftUV properties of Type Ia Supernovae. The low-redshift studyULDA Access Guide No. 6: Supernovae, The Netherlands: ESA

Nugent, Peter

2005-01-01T23:59:59.000Z

82

Feasibility of Measuring the Cosmological Constant [LAMBDA] and Mass Density [Omega] using Type Ia Supernovae  

E-Print Network [OSTI]

at z = 1. uncertainty for supernovae at z = 1. mR Adding theMass Density .Q Using Type Ia Supernovae A. Goobar and S.Density Q Using Type Ia Supernovae Ariel Goobar l and Saul

Goobar, A.

2008-01-01T23:59:59.000Z

83

Spectral Observations and Analyses of Low-Redshift Type Ia Supernovae  

E-Print Network [OSTI]

1.3.2 Thermonuclear Supernovae . . . . . . . . 1.4 Why WriteIa are the result of thermonuclear explosions of C/O whiteIa are the result of thermonuclear explosions of C/O white

Silverman, Jeffrey Michael

2011-01-01T23:59:59.000Z

84

Nearby Supernova Factory Observations of SN 2006D: On Sporadic Carbon Signatures in Early Type Ia Supernova Spectra  

E-Print Network [OSTI]

with low volume-?lling factor. Subject headings: supernovae:general supernovae: individual (SN 2006D)Introduction Type Ia supernovae (SNe Ia) make valuable

2006-01-01T23:59:59.000Z

85

QUANTIFICATION DES AMPLITUDES ET DES TAUX DE DEFORMATION  

E-Print Network [OSTI]

'horizons sismo- sédimentaires dans des tranchées paléosismologiques: Récurrence des séismes: 2000-3000 ans

86

QUANTIFICATION DES AMPLITUDES ET DES TAUX DE DEFORMATION  

E-Print Network [OSTI]

ruptures et datation d'horizons sismo- sédimentaires dans des tranchées paléosismologiques: Récurrence des

87

Innovation Academy Change of Major Form (Out of IA) College of Agricultural and Life Sciences  

E-Print Network [OSTI]

Innovation Academy Change of Major Form (Out of IA) College of Agricultural and Life Sciences Academy Change of Major Form (Out of IA) College of Agricultural and Life Sciences SECTION 3: TO BE COMPLETED BY THE INNOVATION ACADEMY ADVISER IA Adviser's Comments/Conditions (circle

Jawitz, James W.

88

HOSPITALITY AND TOURISM MANAGEMENT MAJOR Virgu1iaTech  

E-Print Network [OSTI]

Hospitality Facilities Planning and Methods I (3) Management (3) #HTM 3484 Socio-Cultural Impacts of Tourism 4414 Food and Beverage Management (Pre: HTM 3414) * #HTM 4464 Human Resources Management in HospHOSPITALITY AND TOURISM MANAGEMENT MAJOR Virgu1iaTech Panplil College of BusIness Department

Virginia Tech

89

Could there be a hole in type Ia supernovae?  

SciTech Connect (OSTI)

In the favored progenitor scenario, Type Ia supernovae (SNe Ia) arise from a white dwarf accreting material from a non-degenerate companion star. Soon after the white dwarf explodes, the ejected supernova material engulfs the companion star; two-dimensional hydrodynamical simulations by Marietta et al. (2001) show that, in the interaction, the companion star carves out a conical hole of opening angle 30-40 degrees in the supernova ejecta. In this paper we use multi-dimensional Monte Carlo radiative transfer calculations to explore the observable consequences of an ejecta-hole asymmetry. We calculate the variation of the spectrum, luminosity, and polarization with viewing angle for the aspherical supernova near maximum light. We find that the supernova looks normal from almost all viewing angles except when one looks almost directly down the hole. In the latter case, one sees into the deeper, hotter layers of ejecta. The supernova is relatively brighter and has a peculiar spectrum characterized by more highly ionized species, weaker absorption features, and lower absorption velocities. The spectrum viewed down the hole is comparable to the class of SN 1991T-like supernovae. We consider how the ejecta-hole asymmetry may explain the current spectropolarimetric observations of SNe Ia, and suggest a few observational signatures of the geometry. Finally, we discuss the variety currently seen in observed SNe Ia and how an ejecta-hole asymmetry may fit in as one of several possible sources of diversity.

Kasen, Daniel; Nugent, Peter; Thomas, R.C.; Wang, Lifan

2004-04-23T23:59:59.000Z

90

Probing the Type Ia environment with Light Echoes  

E-Print Network [OSTI]

In general, Light Echoes (LE) are beautiful, rather academical and therefore unavoidably useless phenomena. In some cases, however, they can give interesting information about the environment surrounding the exploding star. After giving a brief introduction to the subject, I describe its application to the case of Type Ia Supernovae and discuss the implications for progenitors and their location within the host galaxies.

F. Patat

2004-11-19T23:59:59.000Z

91

Signatures of Explosion Models for SN ~Ia & Cosmology  

E-Print Network [OSTI]

We give an overview of the current understanding of Type Ia supernovae relevant for their use as cosmological distance indicators. We present the physical basis to understand their homogeneity of the observed light curves and spectra and the observed correlations. SNe Ia have been well established as distance indicators on the 10 % level. However, the quest for the nature of the dark energy requires improvements in the accuracy to the 2 to 3 % level, we must understand the diversity within the SNe Ia population, and its evolution with redshift. Based on detailed models for the progenitors, explosions, light curves and spectra, we discuss signatures of thermonuclear explosions, and the implications for cosmology. We emphasize the relation between LC properties and spectra because, for local SNe~Ia, the diversity becomes apparent the combination of spectra and LCs whereas, by enlarge, we have to for high-z objects. At some examples, we show how we can actually probe the properties of the progenitor, its environment, and details of the explosion physics.

P. Hoeflich

2004-09-07T23:59:59.000Z

92

Effect of nuclear structure on Type Ia supernova nucleosynthesis  

E-Print Network [OSTI]

The relationship among nuclear structure, the weak processes in nuclei, and astrophysics becomes quite apparent in supernova explosion and nucleosynthesis studies. In this brief article, I report on progress made in the last few years on calculating electron capture and beta-decay rates in iron-group nuclei. I also report on applications of these rates to Type-Ia nucleosynthesis studies.

D. J. Dean

2000-12-08T23:59:59.000Z

93

Thermonuclear supernova models, and observations of Type Ia supernovae  

E-Print Network [OSTI]

In this paper, we review the present state of theoretical models of thermonuclear supernovae, and compare their predicitions with the constraints derived from observations of Type Ia supernovae. The diversity of explosion mechanisms usually found in one-dimensional simulations is a direct consequence of the impossibility to resolve the flame structure under the assumption of spherical symmetry. Spherically symmetric models have been successful in explaining many of the observational features of Type Ia supernovae, but they rely on two kinds of empirical models: one that describes the behaviour of the flame on the scales unresolved by the code, and another that takes account of the evolution of the flame shape. In contrast, three-dimensional simulations are able to compute the flame shape in a self-consistent way, but they still need a model for the propagation of the flame in the scales unresolved by the code. Furthermore, in three dimensions the number of degrees of freedom of the initial configuration of the white dwarf at runaway is much larger than in one dimension. Recent simulations have shown that the sensitivity of the explosion output to the initial conditions can be extremely large. New paradigms of thermonuclear supernovae have emerged from this situation, as the Pulsating Reverse Detonation. The resolution of all these issues must rely on the predictions of observational properties of the models, and their comparison with current Type Ia supernova data, including X-ray spectra of Type Ia supernova remnants.

E. Bravo; C. Badenes; D. Garcia-Senz

2004-12-07T23:59:59.000Z

94

Cosmic Supernova Rate History and Type Ia Supernova Progenitors  

E-Print Network [OSTI]

Adopting a single degenerate scenario for Type Ia supernova progenitors with the metallicity effect, we make a prediction of the cosmic supernova rate history as a composite of the supernova rates in spiral and elliptical galaxies, and compare with the recent observational data up to z ~ 0.55.

Chiaki Kobayashi; Ken'ichi Nomoto; Takuji Tsujimoto

2001-02-14T23:59:59.000Z

95

Des pouvoirs en quilibre  

E-Print Network [OSTI]

©IRD-ThierryRuf Réunion de concertation entre irrigants dans la vallée des Aït Bouguemez, Maroc. 21 #12;

96

Factorisons la gestion des vnements des applications interactives !  

E-Print Network [OSTI]

Factorisons la gestion des vnements des applications interactives ! Stphane Conversy, Paul et nous dgageons les lments essentiels un systme unifi de gestion d'vnements. Nous examinons'une conception de l'application base sur des vnements de diffrents niveaux. FACTORISATION DE LA GESTION DES

97

Facult des arts et des sciences Dpartement de communication  

E-Print Network [OSTI]

Faculté des arts et des sciences Département de communication Plans de cours cadre Cours des programmes de premier cycle en sciences de la communication Comité des études de premier cycle Adopté par l..................................................................................................................................3 COM 1150 Rédaction en communication 1

Parrott, Lael

98

Low-Metallicity Inhibition of Type Ia Supernovae and Galactic and Cosmic Chemical Evolution  

E-Print Network [OSTI]

We introduce a metallicity dependence of Type Ia supernova (SN Ia) rate into the Galactic and cosmic chemical evolution models. In our SN Ia progenitor scenario, the accreting white dwarf (WD) blows a strong wind to reach the Chandrasekhar mass limit. If the iron abundance of the progenitors is as low as [Fe/H] 1-2, SNe Ia can be found only in the environments where the timescale of metal enrichment is sufficiently short as in starburst galaxies and ellipticals. The low-metallicity inhibition of SNe Ia can shed new light on the following issues: 1) The limited metallicity range of the SN Ia progenitors would imply that ``evolution effects'' are relatively small for the use of high redshift SNe Ia to determine the cosmological parameters. 2) WDs of halo populations are poor producers of SNe Ia, so that the WD contribution to the halo mass is not constrained from the iron abundance in the halo. 3) The abundance patterns of globular clusters and field stars in the Galactic halo lack of SN Ia signatures in spite of their age difference of several Gyrs, which can be explained by the low-metallicity inhibition of SNe Ia. 4) It could also explain why the SN Ia contamination is not seen in the damped Ly\\alpha systems for over a wide range of redshift.

Chiaki Kobayashi; Takuji Tsujimoto; Ken'ich Nomoto; Izumi Hachisu; Mariko Kato

1998-06-25T23:59:59.000Z

99

An Analysis of Department of Defense Instruction 8500.2 'Information Assurance (IA) Implementation.'  

SciTech Connect (OSTI)

The Department of Defense (DoD) provides its standard for information assurance in its Instruction 8500.2, dated February 6, 2003. This Instruction lists 157 'IA Controls' for nine 'baseline IA levels.' Aside from distinguishing IA Controls that call for elevated levels of 'robustness' and grouping the IA Controls into eight 'subject areas' 8500.2 does not examine the nature of this set of controls, determining, for example, which controls do not vary in robustness, how this set of controls compares with other such sets, or even which controls are required for all nine baseline IA levels. This report analyzes (1) the IA Controls, (2) the subject areas, and (3) the Baseline IA levels. For example, this report notes that there are only 109 core IA Controls (which this report refers to as 'ICGs'), that 43 of these core IA Controls apply without variation to all nine baseline IA levels and that an additional 31 apply with variations. This report maps the IA Controls of 8500.2 to the controls in NIST 800-53 and ITGI's CoBIT. The result of this analysis and mapping, as shown in this report, serves as a companion to 8500.2. (An electronic spreadsheet accompanies this report.)

Campbell, Philip LaRoche

2012-01-01T23:59:59.000Z

100

Type Ia Supernova Spectral Line Ratios as LuminosityIndicators  

SciTech Connect (OSTI)

Type Ia supernovae have played a crucial role in thediscovery of the dark energy, via the measurement of their light curvesand the determination of the peak brightness via fitting templates to theobserved lightcurve shape. Two spectroscopic indicators are also known tobe well correlated with peak luminosity. Since the spectroscopicluminosity indicators are obtained directly from observed spectra, theywill have different systematic errors than do measurements usingphotometry. Additionally, these spectroscopic indicators may be usefulfor studies of effects of evolution or age of the SNe~;Ia progenitorpopulation. We present several new variants of such spectroscopicindicators which are easy to automate and which minimize the effects ofnoise. We show that these spectroscopic indicators can be measured byproposed JDEM missions such as snap and JEDI.

Bongard, Sebastien; Baron, E.; Smadja, G.; Branch, David; Hauschildt, Peter H.

2005-12-07T23:59:59.000Z

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Learning from the scatter in type Ia supernovae  

SciTech Connect (OSTI)

Type Ia Supernovae are standard candles so their mean apparent magnitude has been exploited to learn about the redshift-distance relationship. Besides intrinsic scatter in this standard candle, additional scatter is caused by gravitational magnification by large scale structure. Here we probe the dependence of this dispersion on cosmological parameters and show that information about the amplitude of clustering, {sigma}{sub 8}, is contained in the scatter. In principle, it will be possible to constrain {sigma}{sub 8} to within 5% with observations of 2000 Type Ia Supernovae. We identify three sources of systematic error - evolution of intrinsic scatter, baryon contributions to lensing, and non-Gaussianity of lensing - which will make this measurement difficult.

Dodelson, Scott [Particle Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States); Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637-1433 (United States); Vallinotto, Alberto [Particle Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States); Department of Physics, The University of Chicago, Chicago, Illinois 60637-1433 (United States)

2006-09-15T23:59:59.000Z

102

CARBON DEFLAGRATION IN TYPE Ia SUPERNOVA. I. CENTRALLY IGNITED MODELS  

SciTech Connect (OSTI)

A leading model for Type Ia supernovae (SNe Ia) begins with a white dwarf near the Chandrasekhar mass that ignites a degenerate thermonuclear runaway close to its center and explodes. In a series of papers, we shall explore the consequences of ignition at several locations within such dwarfs. Here we assume central ignition, which has been explored before, but is worth revisiting, if only to validate those previous studies and to further elucidate the relevant physics for future work. A perturbed sphere of hot iron ash with a radius of {approx}100 km is initialized at the middle of the star. The subsequent explosion is followed in several simulations using a thickened flame model in which the flame speed is either fixed-within the range expected from turbulent combustion-or based on the local turbulent intensity. Global results, including the explosion energy and bulk nucleosynthesis (e.g., {sup 56}Ni of 0.48-0.56 M{sub Sun }) turn out to be insensitive to this speed. In all completed runs, the energy released by the nuclear burning is adequate to unbind the star, but not enough to give the energy and brightness of typical SNe Ia. As found previously, the chemical stratification observed in typical events is not reproduced. These models produce a large amount of unburned carbon and oxygen in central low velocity regions, which is inconsistent with spectroscopic observations, and the intermediate mass elements and iron group elements are strongly mixed during the explosion.

Ma, H.; Woosley, S. E.; Malone, C. M. [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Almgren, A.; Bell, J. [Center for Computational Sciences and Engineering, Lawrence Berkeley National Lab, Berkeley, CA 94720 (United States)

2013-07-01T23:59:59.000Z

103

Theoretical Clues to the Ultraviolet Diversity of Type Ia Supernovae  

E-Print Network [OSTI]

The effect of metallicity on the observed light of Type Ia supernovae (SNe Ia) could lead to systematic errors as the absolute magnitudes of local and distant SNe Ia are compared to measure luminosity distances and determine cosmological parameters. The UV light may be especially sensitive to metallicity, though different modeling methods disagree as to the magnitude, wavelength dependence, and even the sign of the effect. The outer density structure, ^56 Ni, and to a lesser degree asphericity, also impact the UV. We compute synthetic photometry of various metallicity-dependent models and compare to UV/optical photometry from the Swift Ultra-Violet/Optical Telescope. We find that the scatter in the mid-UV to near-UV colors is larger than predicted by changes in metallicity alone and is not consistent with reddening. We demonstrate that a recently employed method to determine relative abundances using UV spectra can be done using UVOT photometry, but we warn that accurate results require an accurate model of t...

Brown, Peter J; Milne, Peter; Roming, Peter W A; Wang, Lifan

2015-01-01T23:59:59.000Z

104

The type Ia supernovae and the Hubble's constant  

E-Print Network [OSTI]

The Hubble's constant is usually surmised to be a constant; but the experiments show a large spread and conflicting estimates. According to the plasma-redshift theory, the Hubble's constant varies with the plasma densities along the line of sight. It varies then slightly with the direction and the distance to a supernova and a galaxy. The relation between the magnitudes of type Ia supernovae and their observed redshifts results in an Hubble's constant with an average value in intergalactic space of 59.44 km per s per Mpc. The standard deviation from this average value is only 0.6 km per s per Mpc, but the standard deviation in a single measurement is about 8.2 km per s per Mpc. These deviations do not include possible absolute calibration errors. The experiments show that the Hubble's constant varies with the intrinsic redshifts of the Milky Way galaxy and the host galaxies for type Ia supernovae, and that it varies with the galactic latitude. These findings support the plasma-redshift theory and contradict the contemporary big-bang theory. Together with the previously reported absence of time dilation in type Ia supernovae measurements, these findings have profound consequences for the standard cosmological theory.

Ari Brynjolfsson

2004-07-20T23:59:59.000Z

105

Experto Universitario Java Enterprise 2012-2013 Depto. Ciencia de la Computacin e IA  

E-Print Network [OSTI]

Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Java 2 Índice. Ciencia de la Computación e IA Lenguaje Java 3 Java · Java es un lenguaje OO creado por Sun Microsystems

Escolano, Francisco

106

Experto Universitario Java Enterprise 2012-2013 Depto. Ciencia de la Computacin e IA  

E-Print Network [OSTI]

Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Depuración y logs - 2 · El depurador de Eclipse Enterprise Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Depuración y logs - 3 El

Escolano, Francisco

107

Teor'ia de Grupos y Mec'anica Qu'antica Luis A. Seco  

E-Print Network [OSTI]

determinado por el Hamiltoniano de la energ'ia, un operador que, actuando sobre una funci'on /(x 1 ; : : : ; xTeor'ia de Grupos y Mec'anica Qu'antica Luis A. Seco Universidad de Toronto. Notas del curso; Teor'ia de Grupos y Mec'anica Cu'antica, L. Seco. U.I.M.P. La Coru~na, 27 Junio -- 1 Julio, 1994

Seco, Luis A.

108

Timescale stretch parameterization of Type Ia supernova B-band light curves  

E-Print Network [OSTI]

the light curve of Type Ia supernovae discovered by theof the high-redshift supernovae. This work was supported inobjects. Subject headings: supernovae: general cosmology:

2001-01-01T23:59:59.000Z

109

Direct numerical simulations of type Ia supernovae flames II: The rayleigh-taylor instability  

E-Print Network [OSTI]

Weaver, T. A. 1994, in Supernovae, Les Houches, Session LIV,Simulations of Type Ia Supernovae Flames II: The Rayleigh-Subject headings: supernovae: general white dwarfs

Bell, J.B.; Day, M.S.; Rendleman, C.A.; Woosley, S.E.; Zingale, M.

2004-01-01T23:59:59.000Z

110

THE IMPACT OF METALLICITY ON THE RATE OF TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

The metallicity of a star strongly affects both its evolution and the properties of the stellar remnant that results from its demise. It is generally accepted that stars with initial masses below {approx}8 M{sub Sun} leave behind white dwarfs and that some sub-population of these lead to Type Ia supernovae (SNe Ia). However, it is often tacitly assumed that metallicity has no effect on the rate of SNe Ia. We propose that a consequence of the effects of metallicity is to significantly increase the SN Ia rate in lower-metallicity galaxies, in contrast to previous expectations. This is because lower-metallicity stars leave behind higher-mass white dwarfs, which should be easier to bring to explosion. We first model SN Ia rates in relation to galaxy masses and ages alone, finding that the elevation in the rate of SNe Ia in lower-mass galaxies measured by Lick Observatory SN Search is readily explained. However, we then see that models incorporating this effect of metallicity agree just as well. Using the same parameters to estimate the cosmic SN Ia rate, we again find good agreement with data up to z Almost-Equal-To 2. We suggest that this degeneracy warrants more detailed examination of host galaxy metallicities. We discuss additional implications, including for hosts of high-z SNe Ia, the SN Ia delay time distribution, super-Chandrasekhar SNe, and cosmology.

Kistler, Matthew D. [California Institute of Technology, Mail Code 350-17, Pasadena, CA 91125 (United States); Stanek, K. Z.; Kochanek, Christopher S.; Thompson, Todd A. [Center for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, OH 43210 (United States); Prieto, Jose L. [Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101 (United States)

2013-06-20T23:59:59.000Z

111

HOST GALAXY PROPERTIES AND HUBBLE RESIDUALS OF TYPE Ia SUPERNOVAE FROM THE NEARBY SUPERNOVA FACTORY  

SciTech Connect (OSTI)

We examine the relationship between Type Ia supernova (SN Ia) Hubble residuals and the properties of their host galaxies using a sample of 115 SNe Ia from the Nearby Supernova Factory. We use host galaxy stellar masses and specific star formation rates fitted from photometry for all hosts, as well as gas-phase metallicities for a subset of 69 star-forming (non-active galactic nucleus) hosts, to show that the SN Ia Hubble residuals correlate with each of these host properties. With these data we find new evidence for a correlation between SN Ia intrinsic color and host metallicity. When we combine our data with those of other published SN Ia surveys, we find the difference between mean SN Ia brightnesses in low- and high-mass hosts is 0.077 {+-} 0.014 mag. When viewed in narrow (0.2 dex) bins of host stellar mass, the data reveal apparent plateaus of Hubble residuals at high and low host masses with a rapid transition over a short mass range (9.8 {<=} log (M{sub *}/M{sub Sun }) {<=} 10.4). Although metallicity has been a favored interpretation for the origin of the Hubble residual trend with host mass, we illustrate how dust in star-forming galaxies and mean SN Ia progenitor age both evolve along the galaxy mass sequence, thereby presenting equally viable explanations for some or all of the observed SN Ia host bias.

Childress, M.; Aldering, G.; Aragon, C.; Bailey, S.; Fakhouri, H. K.; Hsiao, E. Y.; Kim, A. G.; Loken, S. [Physics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Antilogus, P.; Bongard, S.; Canto, A.; Cellier-Holzem, F.; Guy, J. [Laboratoire de Physique Nucleaire et des Hautes Energies, Universite Pierre et Marie Curie Paris 6, Universite Paris Diderot Paris 7, CNRS-IN2P3, 4 place Jussieu, F-75252 Paris Cedex 05 (France); Baltay, C. [Department of Physics, Yale University, New Haven, CT 06250-8121 (United States); Buton, C.; Kerschhaggl, M.; Kowalski, M. [Physikalisches Institut, Universitaet Bonn, Nussallee 12, D-53115 Bonn (Germany); Chotard, N.; Copin, Y.; Gangler, E. [Universite de Lyon, F-69622, Lyon (France); Universite de Lyon 1, Villeurbanne (France); CNRS/IN2P3, Institut de Physique Nucleaire de Lyon (France); and others

2013-06-20T23:59:59.000Z

112

Multi-layered Spectral Formation in SNe Ia Around Maximum Light  

E-Print Network [OSTI]

stars: atmospheres supernovae DISCLAIMER This document wasIntroduction Type Ia supernov have been used as spanning the normal supernov blue magnitudes. Single Ion

Bongard, Sebastien

2008-01-01T23:59:59.000Z

113

High-Redshift Type Ia Supernova Rates in Galaxy Cluster and Field Environments  

E-Print Network [OSTI]

29 Candidates classified as supernovae . . . . . . . .1.1 Type Ia Supernovae as Standard Candles . . . . . . . .4.2.3 Supernovae . . . . . . . . . . . . . . . . 4.2.4

Barbary, Kyle Harris

2011-01-01T23:59:59.000Z

114

Prdiction des conflits dans des systmes homme-machine.  

E-Print Network [OSTI]

??Prdiction des conflits dans le systmes homme-machine. Le travail fait partie de la recherche consacre des problmes d'interaction homme-machine et aux conflits entre l'homme (more)

Pizziol, Sergio

2013-01-01T23:59:59.000Z

115

Turbulence-Flame Interactions in Type Ia Supernovae  

E-Print Network [OSTI]

The large range of time and length scales involved in type Ia supernovae (SN Ia) requires the use of flame models. As a prelude to exploring various options for flame models, we consider, in this paper, high-resolution three-dimensional simulations of the small-scale dynamics of nuclear flames in the supernova environment in which the details of the flame structure are fully resolved. The range of densities examined, 1 to $8 \\times 10^7$ g cm$^{-3}$, spans the transition from the laminar flamelet regime to the distributed burning regime where small scale turbulence disrupts the flame. The use of a low Mach number algorithm facilitates the accurate resolution of the thermal structure of the flame and the inviscid turbulent kinetic energy cascade, while implicitly incorporating kinetic energy dissipation at the grid-scale cutoff. For an assumed background of isotropic Kolmogorov turbulence with an energy characteristic of SN Ia, we find a transition density between 1 and $3 \\times 10^7$ g cm$^{-3}$ where the nature of the burning changes qualitatively. By $1 \\times 10^7$ g cm$^{-3}$, energy diffusion by conduction and radiation is exceeded, on the flame scale, by turbulent advection. As a result, the effective Lewis Number approaches unity. That is, the flame resembles a laminar flame, but is turbulently broadened with an effective diffusion coefficient, $D_T \\sim u' l$, where $u'$ is the turbulent intensity and $l$ is the integral scale. For the larger integral scales characteristic of a real supernova, the flame structure is predicted to become complex and unsteady. Implications for a possible transition to detonation are discussed.

A. J. Aspden; J. B. Bell; M. S. Day; S. E. Woosley; M. Zingale

2008-11-17T23:59:59.000Z

116

SPIN-UP/SPIN-DOWN MODELS FOR TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

In the single-degenerate scenario for Type Ia supernovae (SNe Ia), a white dwarf (WD) must gain a significant amount of matter from a companion star. Because the accreted mass carries angular momentum, the WD is likely to achieve fast spin periods, which can increase the critical mass, M{sub crit}, needed for explosion. When M{sub crit} is higher than the maximum mass achieved by the WD, the central regions of the WD must spin down before it can explode. This introduces super-Chandrasekhar single-degenerate explosions, and a delay between the completion of mass gain and the time of the explosion. Matter ejected from the binary during mass transfer therefore has a chance to become diffuse, and the explosion occurs in a medium with a density similar to that of typical regions of the interstellar medium. Also, either by the end of the WD's mass increase or else by the time of explosion, the donor may exhaust its stellar envelope and become a WD. This alters, generally diminishing, explosion signatures related to the donor star. Nevertheless, the spin-up/spin-down model is highly predictive. Prior to explosion, progenitors can be super-M{sub Ch} WDs in either wide binaries with WD companions or cataclysmic variables. These systems can be discovered and studied through wide-field surveys. Post-explosion, the spin-up/spin-down model predicts a population of fast-moving WDs, low-mass stars, and even brown dwarfs. In addition, the spin-up/spin-down model provides a paradigm which may be able to explain both the similarities and the diversity observed among SNe Ia.

Stefano, R. Di [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Voss, R. [Department of Astrophysics/IMAPP, Radboud University Nijmegen, P.O. Box 9010, NL-6500 GL Nijmegen (Netherlands); Claeys, J. S. W. [Sterrekundig Instituut, Universiteit Utrecht, P.O. Box 800000, 3508 TA Utrecht (Netherlands)

2011-09-01T23:59:59.000Z

117

Reflections on Reflexions: I. Light Echoes in Type Ia Supernovae  

E-Print Network [OSTI]

In the last ten years, observational evidences about a possible connection between Type Ia Supernovae (SNe) properties and the environment where they explode have been steadily growing. In this paper I discuss, from a theoretical point of view but with an observer's perspective, the usage of light echoes (LEs) to probe the CSM around SNe of Type Ia since, in principle, they give us a unique opportunity of getting a three-dimensional description of the SN environment. In turn, this can be used to check the often suggested association of some Ia's with dusty/star forming regions, which would point to a young population for the progenitors. After giving a brief introduction to the LE phenomenon in single scattering approximation, I derive analytical and numerical solutions for the optical light and colour curves for a few simple dust geometries. A fully 3D multiple scattering treatment has also been implemented in a Monte Carlo code, which I have used to investigate the effects of multiple scattering. In particular, I have explored in detail the LE colour dependency from time and dust distribution, since this is a promising tool to determine the dust density and derive the effective presence of multiple scattering from the observed properties. Finally, again by means of Monte Carlo simulations, I have studied the effects of multiple scattering on the LE linear polarization, analyzing the dependencies from the dust parameters and geometry. Both the analytical formalism and MC codes described in this paper can be used for any LE for which the light curve of the central source is known.

F. Patat

2004-09-28T23:59:59.000Z

118

Tension in the Recent Type Ia Supernovae Datasets  

E-Print Network [OSTI]

In the present work, we investigate the tension in the recent Type Ia supernovae (SNIa) datasets Constitution and Union. We show that they are in tension not only with the observations of the cosmic microwave background (CMB) anisotropy and the baryon acoustic oscillations (BAO), but also with other SNIa datasets such as Davis and SNLS. Then, we find the main sources responsible for the tension. Further, we make this more robust by employing the method of random truncation. Based on the results of this work, we suggest two truncated versions of the Union and Constitution datasets, namely the UnionT and ConstitutionT SNIa samples, whose behaviors are more regular.

Hao Wei

2010-04-07T23:59:59.000Z

119

Closest Type Ia Supernova in Decades Solves a Cosmic Mystery  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New SubstationClean Communities of WesternVailCloistered JuneLabClosest Type Ia

120

Qualit des composts et des digestats Fabienne MULLER  

E-Print Network [OSTI]

Qualit des composts et des digestats Fabienne MULLER Direction consommation durable et dchets organiques se construit, avec aujourd'hui le dveloppement important de la mthanisation. Les composts actuellement produits, peuvent l'tre avec des digestats ou non. Les quantits de compost produit ne cessent d

Boyer, Edmond

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Les nanosciences : (r)volution des savoirs et des technologies ?  

E-Print Network [OSTI]

1 Les nanosciences : (r)évolution des savoirs et des technologies ? Jean-Louis Pautrat Physicien, ancien Directeur de la Fondation "Nanosciences aux limites de la nanoélectronique" 23 rue des Martyrs : miniaturisation ; microélectronique ; nanomatériaux ; nanosciences ; nanomédecine 1 - Introduction Tout « honnête

Boyer, Edmond

122

Evaluation des performances des protocoles de routage Ad hoc  

E-Print Network [OSTI]

Evaluation des performances des protocoles de routage Ad hoc Abdelali Boushaba1 , Mohammed Oumsis2 quatre protocoles de routage Ad hoc: DSR, AODV, OLSR et DSDV et d'autre part, d'examiner l'impact de la'activité. Mots-clés--Réseaux mobiles Ad hoc; DSR; AODV; DSDV; OLSR; évaluation des performances; simulation, NS-2

Paris-Sud XI, Université de

123

Modelos Matem'aticos Discretos Gu'ia de Controles Resueltos con Indicaciones  

E-Print Network [OSTI]

estudiantes de la carrera de Ingenier'ia Civil Matem'atica (los cuales sol'ian tomarlo durante su sexto para los estudiantes de la carrera de Ingenier'ia Civil Matem'atica (pero ahora se recomienda que el

Rapaport, Iván

124

Type Ia supernova rate studies from the SDSS-II Supernova Study  

SciTech Connect (OSTI)

The author presents new measurements of the type Ia SN rate from the SDSS-II Supernova Survey. The SDSS-II Supernova Survey was carried out during the Fall months (Sept.-Nov.) of 2005-2007 and discovered {approx} 500 spectroscopically confirmed SNe Ia with densely sampled (once every {approx} 4 days), multi-color light curves. Additionally, the SDSS-II Supernova Survey has discovered several hundred SNe Ia candidates with well-measured light curves, but without spectroscopic confirmation of type. This total, achieved in 9 months of observing, represents {approx} 15-20% of the total SNe Ia discovered worldwide since 1885. The author describes some technical details of the SN Survey observations and SN search algorithms that contributed to the extremely high-yield of discovered SNe and that are important as context for the SDSS-II Supernova Survey SN Ia rate measurements.

Dilday, Benjamin; /Chicago U.

2008-08-01T23:59:59.000Z

125

Analytical Expressions For Light-Curves Of Ordinary And Superluminous Supernovae Type Ia  

E-Print Network [OSTI]

Ordinary supernovae of type Ia (SNeIa) may be produced by the thermonuclear explosion of white dwarfs (WDs), which after their nascence in proto-planetary nebulae accrete fall-back matter and approach the Chandrasekhar mass limit. If the detonation continues into the fall-back layer and/or if the SNIa debris collide with it, they may produce a super Chandrasekhar SNIa. A few underlying physical assumptions of such model yield a very simple master formula that reproduces quite well the bolometric light-curves of both ordinary and supeluminous SNeIa. Other main properties of SNeIa, including the empirical 'brighter-slower' Philipps' relation that was used to standardize ordinary SNeIa as distance indicators and led to the discovery of the accelerating expansion of the universe are also reproduced.

Shlomo Dado; Arnon Dar

2014-02-06T23:59:59.000Z

126

Measurement of Omega_m, Omega_Lambda from a blind analysis of Type Ia supernovae with CMAGIC: Using color information to verify the acceleration of the Universe  

E-Print Network [OSTI]

analysis of Type Ia supernovae with CMAGIC: Using colorof 21 high redshift supernovae using a new technique (lightcurves of Type Ia supernovae, ?rst introduced in Wang

2006-01-01T23:59:59.000Z

127

Conservation des Textiles  

E-Print Network [OSTI]

Conservation des Textiles Les 22 et 23 mai 2013 Soit 2 jours - 14 heures OBJECTIFS DE LA FORMATION essentielles dans la gestion de collections textiles, depuis leur identification jusqu'à leur conservation conservation d'éléments et de collections textiles, et toutes personnes travaillant dans le domaine du

Brest, Université de

128

Polarisation spectral synthesis for Type Ia supernova explosion models  

E-Print Network [OSTI]

We present a Monte Carlo radiative transfer technique for calculating synthetic spectropolarimetry for multi-dimensional supernova explosion models. The approach utilises "virtual-packets" that are generated during the propagation of the Monte Carlo quanta and used to compute synthetic observables for specific observer orientations. Compared to extracting synthetic observables by direct binning of emergent Monte Carlo quanta, this virtual-packet approach leads to a substantial reduction in the Monte Carlo noise. This is vital for calculating synthetic spectropolarimetry (since the degree of polarisation is typically very small) but also useful for calculations of light curves and spectra. We first validate our approach via application of an idealised test code to simple geometries. We then describe its implementation in the Monte Carlo radiative transfer code ARTIS and present test calculations for simple models for Type Ia supernovae. Specifically, we use the well-known one-dimensional W7 model to verify tha...

Bulla, M; Kromer, M

2015-01-01T23:59:59.000Z

129

Habilitation `a diriger des recherches preparee au  

E-Print Network [OSTI]

Approche par contraintes des probl`emes d'ordonnancement et d'affectation : structures temporelles et m´en´eraux de propagation de contraintes. Des rapprochements sont faits avec des techniques issues des probl`emes de satisfaction de contraintes. Le cas des probl`emes d'ordonnancement purement temporels est

Boyer, Edmond

130

HOST GALAXIES OF TYPE Ia SUPERNOVAE FROM THE NEARBY SUPERNOVA FACTORY  

SciTech Connect (OSTI)

We present photometric and spectroscopic observations of galaxies hosting Type Ia supernovae (SNe Ia) observed by the Nearby Supernova Factory. Combining Galaxy Evolution Explorer (GALEX) UV data with optical and near-infrared photometry, we employ stellar population synthesis techniques to measure SN Ia host galaxy stellar masses, star formation rates (SFRs), and reddening due to dust. We reinforce the key role of GALEX UV data in deriving accurate estimates of galaxy SFRs and dust extinction. Optical spectra of SN Ia host galaxies are fitted simultaneously for their stellar continua and emission lines fluxes, from which we derive high-precision redshifts, gas-phase metallicities, and H{alpha}-based SFRs. With these data we show that SN Ia host galaxies present tight agreement with the fiducial galaxy mass-metallicity relation from Sloan Digital Sky Survey (SDSS) for stellar masses log(M{sub *}/M{sub Sun }) > 8.5 where the relation is well defined. The star formation activity of SN Ia host galaxies is consistent with a sample of comparable SDSS field galaxies, though this comparison is limited by systematic uncertainties in SFR measurements. Our analysis indicates that SN Ia host galaxies are, on average, typical representatives of normal field galaxies.

Childress, M.; Aldering, G.; Aragon, C.; Bailey, S.; Fakhouri, H. K.; Hsiao, E. Y.; Kim, A. G.; Loken, S. [Physics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Antilogus, P.; Bongard, S.; Canto, A.; Cellier-Holzem, F.; Guy, J. [Laboratoire de Physique Nucleaire et des Hautes Energies, Universite Pierre et Marie Curie Paris 6, Universite Paris Diderot Paris 7, CNRS-IN2P3, 4 place Jussieu, F-75252 Paris Cedex 05 (France); Baltay, C. [Department of Physics, Yale University, New Haven, CT 06250-8121 (United States); Buton, C.; Kerschhaggl, M.; Kowalski, M. [Physikalisches Institut, Universitaet Bonn, Nussallee 12, D-53115 Bonn (Germany); Chotard, N.; Copin, Y.; Gangler, E. [Universite de Lyon, F-69622, Lyon (France); Universite de Lyon 1, Villeurbanne (France); CNRS/IN2P3, Institut de Physique Nucleaire de Lyon (France); and others

2013-06-20T23:59:59.000Z

131

Type Ia Supernovae Rates and Galaxy Clustering from the CFHT Supernova Legacy Survey  

E-Print Network [OSTI]

The Canada-France-Hawaii Telescope Supernova Legacy Survey (SNLS) has created a large homogeneous database of intermediate redshift (0.2 rates, properties, and host galaxy star formation rates. The SNLS SN Ia database has now been combined with a photometric redshift galaxy catalog and an optical galaxy cluster catalog to investigate the possible influence of galaxy clustering on the SN Ia rate, over and above the expected effect due to the dependence of SFR on clustering through the morphology-density relation. We identify three cluster SNe Ia, plus three additional possible cluster SNe Ia, and find the SN Ia rate per unit mass in clusters at intermediate redshifts is consistent with the rate per unit mass in field early-type galaxies and the SN Ia cluster rate from low redshift cluster targeted surveys. We also find the number of SNe Ia in cluster environments to be within a factor of two of expectations from the two component SNIa rate model.

M. L. Graham; C. J. Pritchet; M. Sullivan; S. D. J. Gwyn; J. D. Neill; E. Y. Hsiao; P. Astier; D. Balam; C. Balland; S. Basa; R. G. Carlberg; A. Conley; D. Fouchez; J. Guy; D. Hardin; I. M. Hook; D. A. Howell; R. Pain; K. Perrett; N. Regnault; S. Baumont; J. Le Du; C. Lidman; S. Perlmutter; P. Ripoche; N. Suzuki; E. S. Walker; T. Zhang

2008-01-31T23:59:59.000Z

132

Stellar Populations and the White Dwarf Mass Function: Connections To Supernova Ia Luminosities  

E-Print Network [OSTI]

We discuss the luminosity function of SNe Ia under the assumption that recent evidence for dispersion in this standard candle is related to variations in the white dwarf mass function (WDMF) in the host galaxies. We develop a simple parameterization of the WDMF as a function of age of a stellar population and apply this to galaxies of different morphological types. We show that this simplified model is consistent with the observed WDMF of Bergeron et al. (1992) for the solar neighborhood. Our simple models predict that WDMF variations can produce a range of more than 1.8 mag in M$_B$(SN Ia), which is comparable to the observed value using the data of Phillips (1993) and van den Bergh (1996). We also predict a galaxy type dependence of M$_B$(SN Ia) under standard assumptions of the star formation history in these galaxies and show that M$_B$(SN Ia) can evolve with redshift. In principle both evolutionary and galaxy type corrections should be applied to recover the intrinsic range of M$_B$(SN Ia) from the observed values. Our current inadequate knowledge of the star formation history of galaxies coupled with poor physical understanding of the SN Ia mechanism makes the reliable estimation of these corrections both difficult and controversial. The predictions of our models combined with the observed galaxy and redshift correlations may have the power to discriminate between the Chandrasekhar and the sub-Chandrasekhar progenitor scenarios for SNe Ia.

Ted von Hippel; G. D. Bothun; R. A. Schommer

1997-06-11T23:59:59.000Z

133

Tension and Systematics in the Gold06 SnIa Dataset  

E-Print Network [OSTI]

The Gold06 SnIa dataset recently released in astro-ph/0611572 consists of five distinct subsets defined by the group or instrument that discovered and analyzed the corresponding data. These subsets are: the SNLS subset (47 SnIa), the HST subset (30 SnIa), the HZSST subset (41 SnIa), the SCP subset (26 SnIa) and the Low Redshift (LR) subset (38 SnIa). These subsets sum up to the 182 SnIa of the Gold06 dataset. We use Monte-Carlo simulations to study the statistical consistency of each one of the above subsets with the full Gold06 dataset. In particular, we compare the best fit $w(z)$ parameters (w_0,w_1) obtained by subtracting each one of the above subsets from the Gold06 dataset (subset truncation), with the corresponding best fit parameters (w^r_0,w^r_1) obtained by subtracting the same number of randomly selected SnIa from the same redshift range of the Gold06 dataset (random truncation). We find that the probability for (w^r_0,w^r_1)=(w_0,w_1) is large for the Gold06 minus SCP (Gold06-SCP) truncation but is less than 5% for the Gold06-SNLS, Gold06-HZSST and Gold06-HST truncations. This result implies that the Gold06 dataset is not statistically homogeneous. By comparing the values of the best fit (w_0,w_1) for each subset truncation we find that the tension among subsets is such that the SNLS and HST subsets are statistically consistent with each other and `pull' towards LCDM (w_0=-1,w_1=0) while the HZSST subset is statistically distinct and strongly `pulls' towards a varying w(z) crossing the line $w=-1$ from below (w_00). We also isolate six SnIa that are mostly responsible for this behavior of the HZSST subset.

S. Nesseris; L. Perivolaropoulos

2007-01-09T23:59:59.000Z

134

UNIVERSITE DE NANTES FACULTE DES SCIENCES ET DES TECHNIQUES  

E-Print Network [OSTI]

'`a beaucoup d'autres), le go^ut et le plaisir des math´emati- ques, gr^ace `a ses cours passionnants et l

Boyer, Edmond

135

UNIVERSIT DE NANTES FACULT DES SCIENCES ET DES TECHNIQUES  

E-Print Network [OSTI]

remerci´e pour son soutien qui s'est poursuivi par le financement d'une partie des sismos acquis par le

Paris-Sud XI, Université de

136

en partenariat Des partenariats  

E-Print Network [OSTI]

attribuées 5 jeunes équipes du Sud soutenues Au Maroc, accord intergouvernemental et accord- cadre avec l mathématique et informatique des systèmes complexes, implantée principalement au Maroc et en France. 1er et mathématiques appliquées, au Maroc. Congrès international de génétique, de biologie moléculaire et

137

, SEYMOUR AND MacGREGOR COGNlTlYb NEUROPSYCHOLOGY. IdyslexIa. Brain. 102. 4363.  

E-Print Network [OSTI]

.T. (1980) Word-form dyslexIa. Brain. 102. 4363. REFERENCENOTES On Reducing Language to Biology I. Holmes. J. M. (1973) Dyslexia: a lIeurolinguistic study 0/ traumatic and developmental disorders 0/ reading

Mehler, Jacques

138

Quantitative comparison between Type Ia supernova spectra at low and high redshifts: A case study  

E-Print Network [OSTI]

Highlight - The Physics of Supernovae, ESO/MPA/MPE Workshop,Evolution in high-redshift supernovae Fig. 8 Ca ii H&KSN 1991T/SN 1999aa-like supernovae. 1. Introduction Type Ia

Garavini, G.; Supernova Cosmology Project

2008-01-01T23:59:59.000Z

139

Constructing a cosmological model-independent Hubble diagram of type Ia supernovae with cosmic chronometers  

E-Print Network [OSTI]

We apply two methods to reconstruct the Hubble parameter $H(z)$ as a function of redshift from 15 measurements of the expansion rate obtained from age estimates of passively evolving galaxies. These reconstructions enable us to derive the luminosity distance to a certain redshift $z$, calibrate the light-curve fitting parameters accounting for the (unknown) intrinsic magnitude of type Ia supernova (SNe Ia) and construct cosmological model-independent Hubble diagrams of SNe Ia. In order to test the compatibility between the reconstructed functions of $H(z)$, we perform a statistical analysis considering the latest SNe Ia sample, the so-called JLA compilation. We find that, while one of the reconstructed functions leads to a value of the local Hubble parameter $H_0$ in excellent agreement with the one reported by the Planck collaboration, the other requires a higher value of $H_0$, which is consistent with recent measurements of this quantity from Cepheids and other local distance indicators.

Li, Zhengxiang; Yu, Hongwei; Zhu, Zong-Hong; Alcaniz, J S

2015-01-01T23:59:59.000Z

140

EVIDENCE FOR TYPE Ia SUPERNOVA DIVERSITY FROM ULTRAVIOLET OBSERVATIONS WITH THE HUBBLE SPACE TELESCOPE  

E-Print Network [OSTI]

We present ultraviolet (UV) spectroscopy and photometry of four Type Ia supernovae (SNe 2004dt, 2004ef, 2005M, and 2005cf) obtained with the UV prism of the Advanced Camera for Surveys on the Hubble Space Telescope. This ...

Lewin, Walter H. G.

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Type Ia supernova rate at a redshift of ~ 0.1  

E-Print Network [OSTI]

We present the type Ia rate measurement based on two EROS supernova search campaigns (in 1999 and 2000). Sixteen supernovae identified as type Ia were discovered. The measurement of the detection efficiency, using a Monte Carlo simulation, provides the type Ia supernova explosion rate at a redshift ~ 0.13. The result is $0.125^{+0.044+0.028}_{-0.034-0.028} h_{70}^2$ SNu where 1 SNu = 1 SN / $10^{10} L_{sun}^B$ / century. This value is compatible with the previous EROS measurement (Hardin et al. 2000), done with a much smaller sample, at a similar redshift. Comparison with other values at different redshifts suggests an evolution of the type Ia supernova rate.

Blanc, G; Alard, C; Albert, J N; Aldering, G; Amadon, A; Andersen, J; Ansari, R; Aubourg, E; Balland, C; Bareyre, P; Beaulieu, J P; Charlot, X; Conley, A; Coutures, C; Dahlen, T; Derue, F; Fan, X; Ferlet, R; Folatelli, G; Fouqu, P; Garavini, G; Glicenstein, J F; Goldman, B; Goobar, A; Gould, A; Graff, D; Gros, M; Hassinski, J; Hamadache, C; Hardin, D; Hook, I M; De Kat, J; Kent, S; Kim, A; Lasserre, T; Le Guillou, Laurent; Lesquoy, E; Loup, C; Magneville, C; Marquette, J B; Maurice, E; Maury, A; Milsztajn, A; Moniez, M; Mouchet, M; Newberg, H; Nobili, S; Palanque-Delabrouille, Nathalie; Perdereau, O; Prvt, L; Rahal, Y R; Regnault, N; Rich, J; Ruiz-Lapuente, P; Spiro, M; Tisserand, P; Vidal-Madjar, A; Vigroux, L; Walton, N A; Zylberajch, S

2004-01-01T23:59:59.000Z

142

Type Ia supernova rate at a redshift of ~ 0.1  

E-Print Network [OSTI]

We present the type Ia rate measurement based on two EROS supernova search campaigns (in 1999 and 2000). Sixteen supernovae identified as type Ia were discovered. The measurement of the detection efficiency, using a Monte Carlo simulation, provides the type Ia supernova explosion rate at a redshift ~ 0.13. The result is $0.125^{+0.044+0.028}_{-0.034-0.028} h_{70}^2$ SNu where 1 SNu = 1 SN / $10^{10} L_{sun}^B$ / century. This value is compatible with the previous EROS measurement (Hardin et al. 2000), done with a much smaller sample, at a similar redshift. Comparison with other values at different redshifts suggests an evolution of the type Ia supernova rate.

G. Blanc; C. Afonso; C. Alard; J. N. Albert; G. Aldering; A. Amadon; J. Andersen; R. Ansari; E. Aubourg; C. Balland; P. Bareyre; J. P. Beaulieu; X. Charlot; A. Conley; C. Coutures; T. Dahlen; F. Derue; X. Fan; R. Ferlet; G. Folatelli; P. Fouque; G. Garavini; J. F. Glicenstein; B. Goldman; A. Goobar; A. Gould; D. Graff; M. Gros; J. Haissinski; C. Hamadache; D. Hardin; I. M. Hook; J. deKat; S. Kent; A. Kim; T. Lasserre; L. LeGuillou; E. Lesquoy; C. Loup; C. Magneville; J. B. Marquette; E. Maurice; A. Maury; A. Milsztajn; M. Moniez; M. Mouchet; H. Newberg; S. Nobili; N. Palanque-Delabrouille; O. Perdereau; L. Prevot; Y. R. Rahal; N. Regnault; J. Rich; P. Ruiz-Lapuente; M. Spiro; P. Tisserand; A. Vidal-Madjar; L. Vigroux; N. A. Walton; S. Zylberajch

2004-05-11T23:59:59.000Z

143

Hipparcos calibration of the peak brightness of four SNe Ia and the value of Ho  

E-Print Network [OSTI]

Hipparcos geometrical parallaxes allowed us to calibrate the Cepheid Period-Luminosity relation and to compute the true distance moduli of 17 galaxies. Among these 17 galaxies, we selected those which generated type Ia Supernovae (SNe Ia). We found NGC 5253, parent galaxy of 1895B and 1972E, IC 4182 and NGC 4536 parents of 1937C and 1981B, respectively. We used the available B-band photometry to determine the peak brightness of these four SNe Ia. We obtained = -19.65 \\pm 0.09. Then, we built a sample of 57 SNe Ia in order to plot the Hubble diagram and determine its zero-point. Our result (ZP_{B} = -3.16 \\pm 0.10) is in agreement with other determinations and allows us to derive the following Hubble constant : Ho = 50 \\pm 3 (internal) km.s^-1.Mpc^-1.

P. Lanoix

1997-12-10T23:59:59.000Z

144

Structural studies of allosteric regulation in the class Ia Ribonucleotide reductase from Escherichia coli  

E-Print Network [OSTI]

Ribonucleotide reductase (RNR) converts ribonucleotides to deoxyribonucleotides, the building blocks for DNA replication and repair. The E. coli class Ia enzyme requires two subunits to catalyze the radical-based reduction ...

Zimanyi, Christina Marie

2013-01-01T23:59:59.000Z

145

~ VII -ATTiVIT EDILIZIE .. Servizio di Ateneo per lEnergIa  

E-Print Network [OSTI]

~ VII - ATTiVIT? EDILIZIE n'p. .' .. Servizio di Ateneo per lEnergIa - N AlJZ43 ········ - .·:tri

Di Pillo, Gianni

146

Infrastructure Assessment Mission: USACE Infrastructure Assessment (IA) Planning and Response Teams (PRTs) have two main  

E-Print Network [OSTI]

, and structural engineering applications; urban search & rescue (US&R) support; and water/wastewater) include pre- and post-declaration support for deploying an IA management cell, water/wastewater assessment

US Army Corps of Engineers

147

University Engagement and Outreach Committee Chair: PVC (IA), Prof. M Cardew-Hall  

E-Print Network [OSTI]

University Engagement and Outreach Committee Chair: PVC (IA), Prof. M Cardew-Hall Alternate Chair: PVC (IO), Dr. Erik Lithander Secretary: Ms. Jan O'Connor (Jan.OConnor@anu.edu.au) / Ms. Joanne Gash

Botea, Adi

148

La gestion des transactions La gestion des transactions  

E-Print Network [OSTI]

La gestion des transactions 1 #12;La gestion des transactions On ne doit appliquer `a une base de`erement. En cas de parallelisme entre transactions, chacune doit ^etre executee de facon en apparence

Wolper, Pierre

149

UNIVERSIT DE NANTES FACULT DES SCIENCES ET DES TECHNIQUES  

E-Print Network [OSTI]

recherche INRIA Rocquencourt Responsable Scientifique : Jean-Marc Menaud, Ma^itre-assistant ´Ecole des Mines´e hallucinante pour r´ev´eler des probl`emes que j'aurais mis un temps fou `a enfouir. Enfin, `a Jean-Marc Menaud

Paris-Sud XI, Université de

150

2010-2011 Depto. Ciencia de la Computacin e IA Especialista Universitario Java Enterprise  

E-Print Network [OSTI]

© 2010-2011 Depto. Ciencia de la Computación e IA Especialista Universitario Java Enterprise Struts Sesión 4: Introducción a Struts 2 #12;© 2010-2011 Depto. Ciencia de la Computación e IA Especialista · Taglibs · Internacionalización · Validación · Conceptos nuevos en Struts 2 #12;© 2010-2011 Depto. Ciencia

Escolano, Francisco

151

Experto Universitario Java Enterprise 2012-2013 Depto. Ciencia de la Computacin e IA  

E-Print Network [OSTI]

Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Java Avanzado Sesión 3: Tratamiento de errores #12;Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de · Tipos genéricos #12;Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Errores - 3

Escolano, Francisco

152

Gamma-rays from Type Ia supernova SN2014J  

E-Print Network [OSTI]

The whole set of INTEGRAL observations of type Ia supernova SN2014J, covering the period 16-162 days after the explosion has being analyzed. For spectral fitting the data are split into early and late periods covering days 16-35 and 50-162, respectively, optimized for Ni-56 and Co-56 lines. As expected for the early period much of the gamma-ray signal is confined to energies below $\\sim$200 keV, while for the late period it is most strong above 400 keV. In particular, in the late period Co-56 lines at 847 and 1248 keV are detected at 4.7 and 4.3 sigma respectively. The lightcurves in several representative energy bands are calculated for the entire period. The resulting spectra and lightcurves are compared with a subset of models. We confirm our previous finding that the gamma-ray data are broadly consistent with the expectations for canonical 1D models, such as delayed detonation or deflagration models for a near-Chandrasekhar mass WD. Late optical spectra (day 136 after the explosion) show rather symmetric ...

Churazov, E; Isern, J; Bikmaev, I; Bravo, E; Chugai, N; Grebenev, S; Jean, P; Kndlseder, J; Lebrun, F; Kuulkers, E

2015-01-01T23:59:59.000Z

153

CIMAT, VIII Escuela de verano, 30 de julio -12 de agos* Introducci'on a la Geometr'ia de la Mec'anic*  

E-Print Network [OSTI]

* *fluencia de una fuerza F(x) se define su energ'ia (como funci'on de su posici'on y velocidad) por E = T +* * V donde la energ'ia cin'etica T = m(x`)2=2 y la energ'ia potencial V (x) es una funci'on que(x) entonces su energ* *'ia E se mantiene constante en el tiempo (la Ley de Conservaci'on de Energ'ia

Bor, Gil

154

Tycho Brahe's 1572 supernova as a standard type Ia explosion revealed from its light echo spectrum  

E-Print Network [OSTI]

Type Ia supernovae (SNe Ia) are thermonuclear explosions of white dwarf stars in close binary systems. They play an important role as cosmological distance indicators and have led to the discovery of the accelerated expansion of the Universe. Among the most important unsolved questions are how the explosion actually proceeds and whether accretion occurs from a companion or via the merging of two white dwarfs. Tycho Brahe's supernova of 1572 (SN 1572) is thought to be one of the best candidates for a SN Ia in the Milky Way. The proximity of the SN 1572 remnant has allowed detailed studies, such as the possible identification of the binary companion, and provides a unique opportunity to test theories of the explosion mechanism and the nature of the progenitor. The determination of the yet unknown exact spectroscopic type of SN 1572 is crucial to relate these results to the diverse population of SNe Ia. Here we report an optical spectrum of Tycho Brahe's supernova near maximum brightness, obtained from a scattered-light echo more than four centuries after the direct light of the explosion swept past Earth. We find that SN 1572 belongs to the majority class of normal SNe Ia. The presence of a strong Ca II IR feature at velocities exceeding 20,000 km/s, which is similar to the previously observed polarized features in other SNe Ia, suggests asphericity in SN 1572.

Oliver Krause; Masaomi Tanaka; Tomonori Usuda; Takashi Hattori; Miwa Goto; Stephan Birkmann; Ken'ichi Nomoto

2008-10-28T23:59:59.000Z

155

THE DISCOVERY OF THE MOST DISTANT KNOWN TYPE Ia SUPERNOVA AT REDSHIFT 1.914  

SciTech Connect (OSTI)

We present the discovery of a Type Ia supernova (SN) at redshift z = 1.914 from the CANDELS multi-cycle treasury program on the Hubble Space Telescope (HST). This SN was discovered in the infrared using the Wide-Field Camera 3, and it is the highest-redshift Type Ia SN yet observed. We classify this object as a SN Ia by comparing its light curve and spectrum with those of a large sample of Type Ia and core-collapse SNe. Its apparent magnitude is consistent with that expected from the {Lambda}CDM concordance cosmology. We discuss the use of spectral evidence for classification of z > 1.5 SNe Ia using HST grism simulations, finding that spectral data alone can frequently rule out SNe II, but distinguishing between SNe Ia and SNe Ib/c can require prohibitively long exposures. In such cases, a quantitative analysis of the light curve may be necessary for classification. Our photometric and spectroscopic classification methods can aid the determination of SN rates and cosmological parameters from the full high-redshift CANDELS SN sample.

Jones, David O.; Rodney, Steven A.; Riess, Adam G. [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States); Mobasher, Bahram [Department of Physics and Astronomy, University of California, Riverside, CA 92521 (United States); Dahlen, Tomas; Casertano, Stefano; Koekemoer, Anton [Space Telescope Science Institute, Baltimore, MD 21218 (United States); McCully, Curtis; Keeton, Charles R.; Patel, Brandon [Department of Physics and Astronomy, Rutgers, State University of New Jersey, Piscataway, NJ 08854 (United States); Frederiksen, Teddy F.; Hjorth, Jens [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen (Denmark); Strolger, Louis-Gregory [Department of Physics, Western Kentucky University, Bowling Green, KY 42101 (United States); Wiklind, Tommy G. [Joint ALMA Observatory, ESO, Santiago (Chile); Challis, Peter [Harvard/Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Graur, Or [School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978 (Israel); Hayden, Brian; Garnavich, Peter [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Weiner, Benjamin J. [Department of Astronomy, University of Arizona, Tucson, AZ 85721 (United States); Filippenko, Alexei V. [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); and others

2013-05-10T23:59:59.000Z

156

PERFORMANCE COMPTABLE GESTION DES RESULTATS  

E-Print Network [OSTI]

1 PERFORMANCE COMPTABLE ET GESTION DES RESULTATS Yves Mard Enseignant l'IAE de Lyon 6, cours Albert Thomas 69 008 Lyon Docteur en Sciences de Gestion (IAE d'Aix en Provence) Coordonnes personnelles : Tl : 06 64 19 39 74 E-mail : ymard @aol.com Rsum L'tude porte sur la gestion des rsultats afin d

Boyer, Edmond

157

SIGECORIS : un simulateur pour explorer des modalits de gestion prventive des inondations  

E-Print Network [OSTI]

SIGECORIS : un simulateur pour explorer des modalits de gestion prventive des inondations rflexion sur la politique amricaine, avance que la premire ambition de toute politique de gestion des philosophies de gestion des inondations dont l'objectif serait la rduction des dommages. Le point de vue

Boyer, Edmond

158

Toxicite des emissions des vehicules diesel Docteur en mededne l'INERIS  

E-Print Network [OSTI]

94-53 .'X- Toxicite des emissions des vehicules diesel D. LAFON Docteur en mededne l'INERIS De nombreuses questions ont ete posees au cours de ce debat sur la toxicite des emissions des moteurs diesel. II de la tche que nous avons effectuee. I. Composition des emissions du diesel Avant d'aborder la

Paris-Sud XI, Universit de

159

Scurit au-del des mythes et des croyances  

ScienceCinema (OSTI)

Prsentation orale en franais, support visuel en franais et en anglais. La pire des failles de scurit est l'impression de scurit. Le dcalage entre la comprhension que l?on a des technologies utilises, et leurs potentiels rels, ainsi que l'impact potentiellement ngatif qu'elles peuvent avoir sur nos vies, n'est pas toujours compris, ou pris en compte par la plupart d'entre-nous. On se contente de nos perceptions pour ne pas avoir se confronter la ralit... Alors qu'en est-il vraiment ? En matire de scurit qui de l'humain ou des technologies a le contrle ?

None

2011-10-06T23:59:59.000Z

160

Verifying the Cosmological Utility of Type Ia Supernovae: Implications of a Dispersion in the Ultraviolet Spectra  

SciTech Connect (OSTI)

We analyze the mean rest-frame ultraviolet (UV) spectrum of Type Ia Supernovae (SNe) and its dispersion using high signal-to-noise ratio Keck-I/LRIS-B spectroscopy for a sample of 36 events at intermediate redshift (z=0.5) discovered by the Canada-France-Hawaii Telescope Supernova Legacy Survey (SNLS). We introduce a new method for removing host galaxy contamination in our spectra, exploiting the comprehensive photometric coverage of the SNLS SNe and their host galaxies, thereby providing the first quantitative view of the UV spectral properties of a large sample of distant SNe Ia. Although the mean SN Ia spectrum has not evolved significantly over the past 40percent of cosmic history, precise evolutionary constraints are limited by the absence of a comparable sample of high-quality local spectra. The mean UV spectrum of our z~;;=0.5 SNe Ia and its dispersion is tabulated for use in future applications. Within the high-redshift sample, we discover significant UV spectral variations and exclude dust extinction as the primary cause by examining trends with the optical SN color. Although progenitor metallicity may drive some of these trends, the variations we see are much larger than predicted in recent models and do not follow expected patterns. An interesting new result is a variation seen in the wavelength of selected UV features with phase. We also demonstrate systematic differences in the SN Ia spectral features with SN light curve width in both the UV and the optical. We show that these intrinsic variations could represent a statistical limitation in the future use of high-redshift SNe Ia for precision cosmology. We conclude that further detailed studies are needed, both locally and at moderate redshift where the rest-frame UV can be studied precisely, in order that future missions can confidently be planned to fully exploit SNe Ia as cosmological probes.

Nugent, Peter E; Ellis, R.S.; Sullivan, M.; Nugent, P.E.; Howell, D.A.; Gal-Yam, A.; Astier, P.; Balam, D.; Balland, C.; Basa, S.; Carlberg, R.; Conley, A.; Fouchez, D.; Guy, J.; Hardin, D.; Hook, I.; Pain, R.; Perrett, K.; Pritchet, C.J.; Regnault, N.

2008-02-28T23:59:59.000Z

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Utilizing Type Ia Supernovae in a Large, Fast, Imaging Survey to Constrain Dark Energy  

E-Print Network [OSTI]

We study the utility of a large sample of type Ia supernovae that might be observed in an imaging survey that rapidly scans a large fraction of the sky for constraining dark energy. We consider information from the traditional luminosity distance test as well as the spread in SNeIa fluxes at fixed redshift induced by gravitational lensing. We include a treatment of photometric redshift uncertainties in our analysis. Our primary result is that the information contained in the mean distance moduli of SNeIa and the dispersion among SNeIa distance moduli complement each other, breaking a degeneracy between the present dark energy equation of state and its time variation without the need for a high-redshift supernova sample. To address photometric redshift uncertainties, we present dark energy constraints as a function of the size of an external set of spectroscopically-observed SNeIa that may be used for redshift calibration, nspec. We find that an imaging survey can constrain the dark energy equation of state at the epoch where it is best constrained with a 1-sigma error of sigma(wpiv)~0.03-0.09$, depending upon various assumptions. In addition, the marginal improvement in the error sigma(wpiv) from an increase in the spectroscopic calibration sample drops once nspec ~ 10^3. This result is important because it is of the order of the size of calibration samples likely to be compiled in the coming decade and because, for samples of this size, the spectroscopic and imaging surveys individually place comparable constraints on the dark energy equation of state. In all cases, it is best to calibrate photometric redshifts with a set of spectroscopically-observed SNeIa with relatively more objects at high redshift than the parent sample of imaging SNeIa.

Andrew R. Zentner; Suman Bhattacharya

2008-12-01T23:59:59.000Z

162

CONSERVATION ET SURVIE PROLONGE DES SPERMATOZODES  

E-Print Network [OSTI]

CONSERVATION ET SURVIE PROLONG?E DES SPERMATOZOÏDES DANS LES VOIES G?NITALES FEMELLES DES VERT?BR?S'épithélium des sites de conservation sont de trois types : les spermatozoïdes peuvent demeurer pêle-mêle dans la cellulaire. Mais il ne semble pas exister de relation entre le type de contact et la durée de conservation

Paris-Sud XI, Université de

163

A New Determination of the High Redshift Type Ia Supernova Rates with the Hubble Space Telescope Advanced Camera for Surveys  

E-Print Network [OSTI]

Schmidt, B. P. , 2003, in Supernovae and Gamma Ray Bursts,for identifying Type Ia supernovae (although spectroscopicfor future high-statistics supernovae searches in which

2008-01-01T23:59:59.000Z

164

The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star  

E-Print Network [OSTI]

magnitudes of Type IA supernovae. Astrophys. J. Lett. 413,from 42 High-Redshift Supernovae. Astrophys. J. 517, 565Observational Evidence from Supernovae for an Accelerating

2008-01-01T23:59:59.000Z

165

Analyse des erreurs orthographiques des tudiants iraniens en langue franaise.  

E-Print Network [OSTI]

??Lobjectif de cette recherche consiste dcrire les types derreurs dorthographe des tudiants iraniens en langue franaise et mener une analyse qualitative et quantitative (more)

Katoozian, Katayoon

2013-01-01T23:59:59.000Z

166

Centrales au gaz et Energies renouvelables: comparer des pommes avec des pommes  

E-Print Network [OSTI]

pour le sant des turbines gaz (TAG). Au Ca- Qubec. nadades annes gie des turbines gaz reprsentera 1990, qui ont

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

167

COMPARING THE LIGHT CURVES OF SIMULATED TYPE Ia SUPERNOVAE WITH OBSERVATIONS USING DATA-DRIVEN MODELS  

SciTech Connect (OSTI)

We propose a robust, quantitative method to compare the synthetic light curves of a Type Ia supernova (SN Ia) explosion model with a large set of observed SNe Ia, and derive a figure of merit for the explosion model's agreement with observations. The synthetic light curves are fit with the data-driven model SALT2 which returns values for stretch, color, and magnitude at peak brightness, as well as a goodness-of-fit parameter. Each fit is performed multiple times with different choices of filter bands and epoch range in order to quantify the systematic uncertainty on the fitted parameters. We use a parametric population model for the distribution of observed SN Ia parameters from large surveys, and extend it to represent red, dim, and bright outliers found in a low-redshift SN Ia data set. We discuss the potential uncertainties of this population model and find it to be reliable given the current uncertainties on cosmological parameters. Using our population model, we assign each set of fitted parameters a likelihood of being observed in nature, and a figure of merit based on this likelihood. We define a second figure of merit based on the quality of the light curve fit, and combine the two measures into an overall figure of merit for each explosion model. We compute figures of merit for a variety of one-, two-, and three-dimensional explosion models and show that our evaluation method allows meaningful inferences across a wide range of light curve quality and fitted parameters.

Diemer, Benedikt; Kessler, Richard; Graziani, Carlo; Jordan, George C. IV; Lamb, Donald Q.; Long, Min; Van Rossum, Daniel R., E-mail: bdiemer@oddjob.uchicago.edu [Flash Center for Computational Science, University of Chicago, Chicago, IL 60637 (United States)

2013-08-20T23:59:59.000Z

168

Strong near-infrared carbon in the Type Ia supernova iPTF13ebh  

E-Print Network [OSTI]

We present near-infrared (NIR) time-series spectroscopy, as well as complementary ultraviolet (UV), optical, and NIR data, of the Type Ia supernova (SN Ia) iPTF13ebh, which was discovered within two days from the estimated time of explosion. The first NIR spectrum was taken merely 2.3 days after explosion and may be the earliest NIR spectrum yet obtained of a SN Ia. The most striking features in the spectrum are several NIR C I lines, and the C I {\\lambda}1.0693 {\\mu}m line is the strongest ever observed in a SN Ia. Interestingly, no strong optical C II counterparts were found, even though the optical spectroscopic time series began early and is densely-cadenced. Except at the very early epochs, within a few days from the time of explosion, we show that the strong NIR C I compared to the weaker optical C II appears to be general in SNe Ia. iPTF13ebh is a fast decliner with {\\Delta}m15(B) = 1.79 $\\pm$ 0.01, and its absolute magnitude obeys the linear part of the width-luminosity relation. It is therefore categ...

Hsiao, E Y; Contreras, C; Hflich, P; Sand, D; Marion, G H; Phillips, M M; Stritzinger, M; Gonzlez-Gaitn, S; Mason, R E; Folatelli, G; Parent, E; Gall, C; Amanullah, R; Anupama, G C; Arcavi, I; Banerjee, D P K; Beletsky, Y; Blanc, G A; Bloom, J S; Brown, P J; Campillay, A; Cao, Y; De Cia, A; Diamond, T; Freedman, W L; Gonzalez, C; Goobar, A; Holmbo, S; Howell, D A; Johansson, J; Kasliwal, M M; Kirshner, R P; Krisciunas, K; Kulkarni, S R; Maguire, K; Milne, P A; Morrell, N; Nugent, P E; Ofek, E O; Osip, D; Palunas, P; Perley, D A; Persson, S E; Piro, A L; Rabus, M; Roth, M; Schiefelbein, J M; Srivastav, S; Sullivan, M; Suntzeff, N B; Surace, J; Wo?nia, P R; Yaron, O

2015-01-01T23:59:59.000Z

169

Diplme d'Universit valuation de la Qualit des Soins  

E-Print Network [OSTI]

sant ; n CONTENU Semaine 1 METHODES et OUTILS des DMARCHES QUALIT niveau I - Les principaux outils et METHODES et OUTILS des DMARCHES QUALIT niveau II - Suite des mthodes et outils des dmarques qualit

Brest, Universit de

170

SALT2: using distant supernovae to improve the use of Type Ia supernovae as distance indicators  

E-Print Network [OSTI]

We present an empirical model of Type Ia supernovae spectro-photometric evolution with time. The model is built using a large data set including light-curves and spectra of both nearby and distant supernovae, the latter being observed by the SNLS collaboration. We derive the average spectral sequence of Type Ia supernovae and their main variability components including a color variation law. The model allows us to measure distance moduli in the spectral range 2500-8000 A with calculable uncertainties, including those arising from variability of spectral features. Thanks to the use of high-redshift SNe to model the rest-frame UV spectral energy distribution, we are able to derive improved distance estimates for SNe Ia in the redshift range 0.8supernovae.

J. Guy; P. Astier; S. Baumont; D. Hardin; R. Pain; N. Regnault; S. Basa; R. G. Carlberg; A. Conley; S. Fabbro; D. Fouchez; I. M. Hook; D. A. Howell; K. Perrett; C. J. Pritchet; J. Rich; M. Sullivan; P. Antilogus; E. Aubourg; G. Bazin; J. Bronder; M. Filiol; N. Palanque-Delabrouille; P. Ripoche; V. Ruhlmann-Kleider

2007-01-29T23:59:59.000Z

171

[O I] ??6300, 6364 IN THE NEBULAR SPECTRUM OF A SUBLUMINOUS TYPE Ia SUPERNOVA  

SciTech Connect (OSTI)

In this Letter, a late-phase spectrum of SN 2010lp, a subluminous Type Ia supernova (SN Ia), is presented and analyzed. As in 1991bg-like SNe Ia at comparable epochs, the spectrum is characterized by relatively broad [Fe II] and [Ca II] emission lines. However, instead of narrow [Fe III] and [Co III] lines that dominate the emission from the innermost regions of 1991bg-like supernovae (SNe), SN 2010lp shows [O I] ??6300, 6364 emission, usually associated with core-collapse SNe and never previously observed in a subluminous thermonuclear explosion. The [O I] feature has a complex profile with two strong, narrow emission peaks. This suggests that oxygen is distributed in a non-spherical region close to the center of the ejecta, severely challenging most thermonuclear explosion models discussed in the literature. We conclude that, given these constraints, violent mergers are presently the most promising scenario to explain SN 2010lp.

Taubenberger, S.; Kromer, M.; Hillebrandt, W. [Max-Planck-Institut fr Astrophysik, Karl-Schwarzschild-Str. 1, D-85741 Garching (Germany)] [Max-Planck-Institut fr Astrophysik, Karl-Schwarzschild-Str. 1, D-85741 Garching (Germany); Pakmor, R. [Heidelberger Institut fr Theoretische Studien, Schloss-Wolfsbrunnenweg 35, D-69118 Heidelberg (Germany)] [Heidelberger Institut fr Theoretische Studien, Schloss-Wolfsbrunnenweg 35, D-69118 Heidelberg (Germany); Pignata, G. [Departamento de Ciencias Fisicas, Universidad Andres Bello, Avda. Republica 252, Santiago (Chile)] [Departamento de Ciencias Fisicas, Universidad Andres Bello, Avda. Republica 252, Santiago (Chile); Maeda, K. [Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan)] [Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan); Hachinger, S. [Julius-Maximilians-Universitt Wrzburg, Emil-Fischer-Str. 31, D-97074 Wrzburg (Germany)] [Julius-Maximilians-Universitt Wrzburg, Emil-Fischer-Str. 31, D-97074 Wrzburg (Germany); Leibundgut, B. [European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching (Germany)] [European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching (Germany)

2013-10-01T23:59:59.000Z

172

THE LATE-TIME REBRIGHTENING OF TYPE Ia SN 2005gj IN THE MID-INFRARED  

SciTech Connect (OSTI)

A growing number of observations reveal a subset of Type Ia supernovae undergoing circumstellar interaction (SNe Ia-CSM). We present unpublished archival Spitzer Space Telescope data on SNe Ia-CSM 2002ic and 2005gj obtained >1300 and 500 days post-discovery, respectively. Both SNe show evidence for late-time mid-infrared (mid-IR) emission from warm dust. The dust parameters are most consistent with a preexisting dust shell that lies beyond the forward-shock radius, most likely radiatively heated by optical and X-ray emission continuously generated by late-time CSM interaction. In the case of SN 2005gj, the mid-IR luminosity more than doubles after 1 yr post-discovery. While we are not aware of any late-time optical-wavelength observations at these epochs, we attribute this rebrightening to renewed shock interaction with a dense circumstellar shell.

Fox, Ori D.; Filippenko, Alexei V., E-mail: ofox@berkeley.edu [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States)

2013-07-20T23:59:59.000Z

173

Spectral Modeling of SNe Ia Near Maximum Light: Probing the Characteristics of Hydro Models  

E-Print Network [OSTI]

We have performed detailed NLTE spectral synthesis modeling of 2 types of 1-D hydro models: the very highly parameterized deflagration model W7, and two delayed detonation models. We find that overall both models do about equally well at fitting well observed SNe Ia near to maximum light. However, the Si II 6150 feature of W7 is systematically too fast, whereas for the delayed detonation models it is also somewhat too fast, but significantly better than that of W7. We find that a parameterized mixed model does the best job of reproducing the Si II 6150 line near maximum light and we study the differences in the models that lead to better fits to normal SNe Ia. We discuss what is required of a hydro model to fit the spectra of observed SNe Ia near maximum light.

E. Baron; S. Bongard; David Branch; Peter H. Hauschildt

2006-03-03T23:59:59.000Z

174

CfA4: LIGHT CURVES FOR 94 TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

We present multi-band optical photometry of 94 spectroscopically confirmed Type Ia supernovae (SNe Ia) in the redshift range 0.0055-0.073, obtained between 2006 and 2011. There are a total of 5522 light-curve points. We show that our natural-system SN photometry has a precision of {approx}< 0.03 mag in BVr'i', {approx}< 0.06 mag in u', and {approx}< 0.07 mag in U for points brighter than 17.5 mag and estimate that it has a systematic uncertainty of 0.014, 0.010, 0.012, 0.014, 0.046, and 0.073 mag in BVr'i'u'U, respectively. Comparisons of our standard-system photometry with published SN Ia light curves and comparison stars reveal mean agreement across samples in the range of {approx}0.00-0.03 mag. We discuss the recent measurements of our telescope-plus-detector throughput by direct monochromatic illumination by Cramer et al. This technique measures the whole optical path through the telescope, auxiliary optics, filters, and detector under the same conditions used to make SN measurements. Extremely well characterized natural-system passbands (both in wavelength and over time) are crucial for the next generation of SN Ia photometry to reach the 0.01 mag accuracy level. The current sample of low-z SNe Ia is now sufficiently large to remove most of the statistical sampling error from the dark-energy error budget. But pursuing the dark-energy systematic errors by determining highly accurate detector passbands, combining optical and near-infrared (NIR) photometry and spectra, using the nearby sample to illuminate the population properties of SNe Ia, and measuring the local departures from the Hubble flow will benefit from larger, carefully measured nearby samples.

Hicken, Malcolm; Challis, Peter; Kirshner, Robert P.; Bakos, Gaspar; Berlind, Perry; Brown, Warren R.; Caldwell, Nelson; Calkins, Mike; Falco, Emilio; Fernandez, Jose; Friedman, Andrew S.; Groner, Ted; Hartman, Joel [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Rest, Armin [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Cramer, Claire E. [NIST (National Institute of Standards and Technology), Gaithersburg, MD 20899 (United States); Wood-Vasey, W. Michael [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260 (United States); Currie, Thayne [NASA, Goddard Space Flight Center, Greenbelt, MD 20771 (United States); De Kleer, Kathy [Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Esquerdo, Gil; Everett, Mark, E-mail: mhicken@cfa.harvard.edu [Planetary Science Institute, 1700 East Fort Lowell Road, Tucson, AZ 85719 (United States); and others

2012-06-01T23:59:59.000Z

175

Constraining the Lattice Fluid Dark Energy from SNe Ia, BAO and OHD  

E-Print Network [OSTI]

Sanchez and Lacombe have ever developed a lattice fluid theory based on a well-defined statistical mechanical model. Taking the lattice fluid as a candidate of dark energy, we investigate the cosmic evolution of this fluid. Using the combined observational data of Type Ia Supernova (SNe Ia), Baryon Acoustic Oscillations (BAO) and Observational Hubble Data (OHD), we find the best fit value of the parameter in the model, $A = -0.3_{-0.1}^{+0.1}$. Then the cosmological implications of the model are presented.

Duan, Xiaoxian; Gao, Changjun

2011-01-01T23:59:59.000Z

176

Constraining the Lattice Fluid Dark Energy from SNe Ia, BAO and OHD  

E-Print Network [OSTI]

Sanchez and Lacombe have ever developed a lattice fluid theory based on a well-defined statistical mechanical model. Taking the lattice fluid as a candidate of dark energy, we investigate the cosmic evolution of this fluid. Using the combined observational data of Type Ia Supernova (SNe Ia), Baryon Acoustic Oscillations (BAO) and Observational Hubble Data (OHD), we find the best fit value of the parameter in the model, $A = -0.3_{-0.1}^{+0.1}$. Then the cosmological implications of the model are presented.

Xiaoxian Duan; Yichao Li; Changjun Gao

2011-11-15T23:59:59.000Z

177

Secteur publique (universit, InrIa, InSEE, ministres) et secteur priv (industrie : aronautique, automobile, militaire,  

E-Print Network [OSTI]

, automobile, militaire, services, banques, finances et assurances) Semestre 1 · Mécanique des fluides

Daveau, Christian

178

A TYPE Ia SUPERNOVA AT REDSHIFT 1.55 IN HUBBLE SPACE TELESCOPE INFRARED OBSERVATIONS FROM CANDELS  

SciTech Connect (OSTI)

We report the discovery of a Type Ia supernova (SN Ia) at redshift z = 1.55 with the infrared detector of the Wide Field Camera 3 (WFC3-IR) on the Hubble Space Telescope (HST). This object was discovered in CANDELS imaging data of the Hubble Ultra Deep Field and followed as part of the CANDELS+CLASH Supernova project, comprising the SN search components from those two HST multi-cycle treasury programs. This is the highest redshift SN Ia with direct spectroscopic evidence for classification. It is also the first SN Ia at z > 1 found and followed in the infrared, providing a full light curve in rest-frame optical bands. The classification and redshift are securely defined from a combination of multi-band and multi-epoch photometry of the SN, ground-based spectroscopy of the host galaxy, and WFC3-IR grism spectroscopy of both the SN and host. This object is the first of a projected sample at z > 1.5 that will be discovered by the CANDELS and CLASH programs. The full CANDELS+CLASH SN Ia sample will enable unique tests for evolutionary effects that could arise due to differences in SN Ia progenitor systems as a function of redshift. This high-z sample will also allow measurement of the SN Ia rate out to z Almost-Equal-To 2, providing a complementary constraint on SN Ia progenitor models.

Rodney, Steven A.; Riess, Adam G.; Jones, David O. [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States); Dahlen, Tomas; Ferguson, Henry C.; Casertano, Stefano; Grogin, Norman A. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Strolger, Louis-Gregory [Department of Physics, Western Kentucky University, Bowling Green, KY 42101 (United States); Hjorth, Jens; Frederiksen, Teddy F. [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen (Denmark); Weiner, Benjamin J. [Department of Astronomy, University of Arizona, Tucson, AZ 85721 (United States); Mobasher, Bahram [Department of Physics and Astronomy, University of California, Riverside, CA 92521 (United States); Challis, Peter; Kirshner, Robert P. [Harvard/Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Faber, S. M. [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 92064 (United States); Filippenko, Alexei V. [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Garnavich, Peter; Hayden, Brian [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Graur, Or [Department of Astrophysics, Tel Aviv University, 69978 Tel Aviv (Israel); Jha, Saurabh W. [Department of Physics and Astronomy, Rutgers, State University of New Jersey, Piscataway, NJ 08854 (United States); and others

2012-02-10T23:59:59.000Z

179

Multi-color light curves of type Ia supernovae on the color-magnitude diagram: A novel step toward more precise distance and extinction estimates  

E-Print Network [OSTI]

Date is earlier than for supernovae with smaller ?m 15 . SeeLight Curves of Type Ia Supernovae on the Color-Magnituderelation of Type Ia supernovae after optical maximum can

Wang, Lifan; Goldhaber, Gerson; Aldering, Greg; Perlmutter, Saul

2003-01-01T23:59:59.000Z

180

FACULT DES SCIENCES HUMAINES ET SOCIALES -SORBONNE  

E-Print Network [OSTI]

FACULT? DES SCIENCES HUMAINES ET SOCIALES - SORBONNE LICENCE EN SCIENCES HUMAINES ET SOCIALES ANN?E UNIVERSITAIRE 2013-2014 MENTION SCIENCES DU Vaillant 92100 Boulogne-Billancourt L3, M1 et M2 Faculté des Sciences

Pellier, Damien

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

FACULT DES SCIENCES HUMAINES ET SOCIALES -SORBONNE  

E-Print Network [OSTI]

FACULT? DES SCIENCES HUMAINES ET SOCIALES - SORBONNE LICENCE EN SCIENCES HUMAINES ET SOCIALES ANN?E UNIVERSITAIRE 2013-2014 MENTION SCIENCES DE L'?DUCATION L3 Faculté des Sciences humaines et sociales

Pellier, Damien

182

G. GNIN. -LA CORROSION DES MTAUX 159 LA CORROSION DES MTAUX  

E-Print Network [OSTI]

G. G?NIN. - LA CORROSION DES M?TAUX 159 LA CORROSION DES M?TAUX AU COURS DE LA FABRICATION DU LAIT corrosion des métaux par le lait, au cours des transformations successives que ce produit subit dans l spéciale- ment attachés à l'étude de la corrosion des métaux dans la fabrica- . tion du lait condensé. et

Paris-Sud XI, Université de

183

CIMAT, VIII Escuela de verano, 30 de julio -12 de ago* Introducci'on a la Geometr'ia de la Mec'ani*  

E-Print Network [OSTI]

con un valor fijo de la energ* *'ia corresponden a secciones del cono del inciso (a) por * *energ'ia tienen el mismo semi-eje mayor. 11.Demuestra la tercera ley de Kepler: toda soluci'on peri Introducci'on a la Geometr'ia de la Mec'ani* *ca Cl'asica Problemas 7 - 12

Bor, Gil

184

Revealing progenitors of type Ia supernovae from their light curves and spectra  

E-Print Network [OSTI]

In the single degenerate (SD) scenario of type Ia supernovae (SNe Ia), the collision of the ejecta with its companion results in stripping hydrogen rich matter from the companion star. This hydrogen rich matter might leave its trace in the light curves and/or spectra. In this paper, we perform radiation hydrodynamical simulations of this collision for three binary systems. As a result, we find that the emission from the shock-heated region is not as strong as in the previous study. This weak emission, however, may be a result of our underestimate of the coupling between the gas and radiation in the shock interaction. Therefore, though our results suggest that the observed early light curves of SNe Ia can not rule out binary systems with a short separation as the progenitor system, more elaborate numerical studies will be needed to reach a fair conclusion. Alternatively, our results indicate that the feature observed in the early phase of a recent type Ia SN 2014J might result from interaction of the ejecta wi...

Kutsuna, Masamichi

2015-01-01T23:59:59.000Z

185

ON THE LIRA LAW AND THE NATURE OF EXTINCTION TOWARD TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

We have studied the relation between the color evolution of Type Ia supernovae (SNe Ia) from maximum light to the Lira law regime and the presence of narrow absorption features. Based on a nearby sample of 89 SNe Ia, we have found that the rate of change of B - V colors at late phases (between 35 and 80 days after maximum) varies significantly among different SNe Ia. At maximum light, faster Lira law B - V decliners have significantly higher equivalent widths of blended Na I D1 and D2 narrow absorption lines, redder colors, and lower R{sub V} reddening laws. We do not find faster Lira law B - V decliners to have a strong preference for younger galaxy environments, where higher interstellar material (ISM) column densities would be expected. We interpret these results as evidence for the presence of circumstellar material. The differences in colors and reddening laws found at maximum light are also present 55 days afterward, but unlike the colors at maximum they show a significant variation among different host galaxy morphological types. This suggests that the effect of ISM on the colors is more apparent at late times. Finally, we discuss how the transversal expansion of the ejecta in an inhomogeneous ISM could mimic some of these findings.

Foerster, Francisco; Gonzalez-Gaitan, Santiago [Departamento de Astronomia, Universidad de Chile, Casilla 36-D, Santiago (Chile); Folatelli, Gaston [Kavli Institute for the Physics and Mathematics of the Universe, Todai Institutes for Advanced Study (TODIAS), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan); Morrell, Nidia [Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena (Chile)

2013-07-20T23:59:59.000Z

186

METALLICITY DIFFERENCES IN TYPE Ia SUPERNOVA PROGENITORS INFERRED FROM ULTRAVIOLET SPECTRA  

SciTech Connect (OSTI)

Two ''twin'' Type Ia supernovae (SNe Ia), SNe 2011by and 2011fe, have extremely similar optical light-curve shapes, colors, and spectra, yet have different ultraviolet (UV) continua as measured in Hubble Space Telescope spectra and measurably different peak luminosities. We attribute the difference in the UV continua to significantly different progenitor metallicities. This is the first robust detection of different metallicities for SN Ia progenitors. Theoretical reasoning suggests that differences in metallicity also lead to differences in luminosity. SNe Ia with higher progenitor metallicities have lower {sup 56}Ni yields and lower luminosities for the same light-curve shape. SNe 2011by and 2011fe have different peak luminosities ({Delta}M{sub V} Almost-Equal-To 0.6 mag), which correspond to different {sup 56}Ni yields: M{sub 11fe}({sup 56}Ni) / M{sub 11by}({sup 56}Ni) = 1.7{sup +0.7}{sub -0.5}. From theoretical models that account for different neutron-to-proton ratios in progenitors, the differences in {sup 56}Ni yields for SNe 2011by and 2011fe imply that their progenitor stars were above and below solar metallicity, respectively. Although we can distinguish progenitor metallicities in a qualitative way from UV data, the quantitative interpretation in terms of abundances is limited by the present state of theoretical models.

Foley, Ryan J.; Kirshner, Robert P. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2013-05-20T23:59:59.000Z

187

Tycho Brahe's 1572 supernova as a standard type Ia explosion revealed from its light echo spectrum  

E-Print Network [OSTI]

Type Ia supernovae (SNe Ia) are thermonuclear explosions of white dwarf stars in close binary systems. They play an important role as cosmological distance indicators and have led to the discovery of the accelerated expansion of the Universe. Among the most important unsolved questions are how the explosion actually proceeds and whether accretion occurs from a companion or via the merging of two white dwarfs. Tycho Brahe's supernova of 1572 (SN 1572) is thought to be one of the best candidates for a SN Ia in the Milky Way. The proximity of the SN 1572 remnant has allowed detailed studies, such as the possible identification of the binary companion, and provides a unique opportunity to test theories of the explosion mechanism and the nature of the progenitor. The determination of the yet unknown exact spectroscopic type of SN 1572 is crucial to relate these results to the diverse population of SNe Ia. Here we report an optical spectrum of Tycho Brahe's supernova near maximum brightness, obtained from a scatter...

Krause, Oliver; Usuda, Tomonori; Hattori, Takashi; Goto, Miwa; Birkmann, Stephan; Nomoto, Ken'ichi

2008-01-01T23:59:59.000Z

188

SEASONAL V A R IA TIONS IN STRUCTURE AND CIRCULATION IN THE RED SEA  

E-Print Network [OSTI]

SEASONAL V A R IA TIONS IN STRUCTURE AND CIRCULATION IN THE RED SEA A DISSERTATION SUBMITTE D and surface circulation in the Red Sea, occur r ing along the north-south axis of the Sea and extending fr om on in the northern Red Sea is frorn the nor th-northwest throughout the year' during the winter ( fr om October

Luther, Douglas S.

189

Seminar Ia, cetrti letnik, stari program LONGITUDINAL DYNAMICS OF PARTICLES IN ACCELERATORS  

E-Print Network [OSTI]

Seminar Ia, cetrti letnik, stari program LONGITUDINAL DYNAMICS OF PARTICLES IN ACCELERATORS Author motion of charged particles in particle accelerators. The technique of acceleration by electromagnetic waves is explored and the stability of motion under such acceleration is inspected. The seminar

?umer, Slobodan

190

Section I. Summary of Project Activities Section I-A. 2008-2009 Project Summary  

E-Print Network [OSTI]

Section I. Summary of Project Activities Section I-A. 2008-2009 Project Summary University year, we accomplished the following: · Established a dual career opportunity procedure vetted to address, communicate procedures for the new daycare facility, and to explore the potential

Farritor, Shane

191

On the thermonuclear runaway in Type Ia supernovae: How to run away  

E-Print Network [OSTI]

Type Ia Supernovae are thought to be thermonuclear explosions of massive white dwarfs (WD). We present the first study of multi-dimensional effects during the final hours prior to the thermonuclear runaway which leads to the explosion. The calculations utilize an implicit, 2-D hydrodynamical code

P. Hflich; J. Stein

2002-01-01T23:59:59.000Z

192

Turbulent Oxygen Flames in Type Ia Supernovae A. J. Aspden1  

E-Print Network [OSTI]

Turbulent Oxygen Flames in Type Ia Supernovae A. J. Aspden1 , J. B. Bell1 , and S. E. Woosley2 oxygen flames. The two aims of the paper are to examine the response of the inductive oxygen flame to intense levels of turbulence, and to explore the possibility of transition to detonation in the oxygen

193

High-Velocity Features of Calcium and Silicon in the Spectra of Type Ia Supernovae  

E-Print Network [OSTI]

"High-velocity features" (HVFs) are spectral features in Type Ia supernovae (SNe Ia) that have minima indicating significantly higher (by greater than about 6000 km/s) velocities than typical "photospheric-velocity features" (PVFs). The PVFs are absorption features with minima indicating typical photospheric (i.e., bulk ejecta) velocities (usually ~9000-15,000 km/s near B-band maximum brightness). In this work we undertake the most in-depth study of HVFs ever performed. The dataset used herein consists of 445 low-resolution optical and near-infrared (NIR) spectra (at epochs up to 5 d past maximum brightness) of 210 low-redshift SNe Ia that follow the "Phillips relation." A series of Gaussian functions is fit to the data in order to characterise possible HVFs of Ca II H&K, Si II {\\lambda}6355, and the Ca II NIR triplet. The temporal evolution of the velocities and strengths of the PVFs and HVFs of these three spectral features is investigated, as are possible correlations with other SN Ia observables. We f...

Silverman, Jeffrey M; Marion, G H; Wheeler, J Craig; Barna, Barnabas; Szalai, Tamas; Mulligan, Brian; Filippenko, Alexei V

2015-01-01T23:59:59.000Z

194

The superconducting spin valve and triplet superconductivity I.A. Garifullin a,n  

E-Print Network [OSTI]

The superconducting spin valve and triplet superconductivity I.A. Garifullin a,n , P.V. Leksin s t r a c t A review of our recent results on the spin valve effect is presented. We have used coefficient DF and the exchange splitting I of the conduction band in the F layer [1]. For pure Fe the value

Fominov, Yakov

195

GESTION DES RISQUES ET PROCESSUS STRATEGIQUES  

E-Print Network [OSTI]

processus ; enfin, nous mettons en oeuvre cette approche sur un cas de gestion des risques, dans une grandeGESTION DES RISQUES ET PROCESSUS STRATEGIQUES Ren Demeestre et Philippe Lorino1 Rsum Abstract nombreuses entreprises investir dans leur systme de pilotage et la gestion des risques est une composante

Boyer, Edmond

196

HIGH-VELOCITY LINE FORMING REGIONS IN THE TYPE Ia SUPERNOVA 2009ig  

SciTech Connect (OSTI)

We report measurements and analysis of high-velocity (HVF) (>20,000 km s{sup 1}) and photospheric absorption features in a series of spectra of the Type Ia supernova (SN) 2009ig obtained between 14 days and +13 days with respect to the time of maximum B-band luminosity (B-max). We identify lines of Si II, Si III, S II, Ca II, and Fe II that produce both HVF and photospheric-velocity (PVF) absorption features. SN 2009ig is unusual for the large number of lines with detectable HVF in the spectra, but the light-curve parameters correspond to a slightly overluminous but unexceptional SN Ia (M{sub B} = 19.46 mag and ?m{sub 15}(B) = 0.90 mag). Similarly, the Si II ?6355 velocity at the time of B-max is greater than 'normal' for an SN Ia, but it is not extreme (v{sub Si} = 13,400 km s{sup 1}). The 14 days and 13 days spectra clearly resolve HVF from Si II ?6355 as separate absorptions from a detached line forming region. At these very early phases, detached HVF are prevalent in all lines. From 12 days to 6 days, HVF and PVF are detected simultaneously, and the two line forming regions maintain a constant separation of about 8000 km s{sup 1}. After 6 days all absorption features are PVF. The observations of SN 2009ig provide a complete picture of the transition from HVF to PVF. Most SNe Ia show evidence for HVF from multiple lines in spectra obtained before 10 days, and we compare the spectra of SN 2009ig to observations of other SNe. We show that each of the unusual line profiles for Si II ?6355 found in early-time spectra of SNe Ia correlate to a specific phase in a common development sequence from HVF to PVF.

Marion, G. H.; Foley, Ryan J.; Challis, Peter; Kirshner, Robert P. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Vinko, Jozsef; Wheeler, J. Craig; Silverman, Jeffrey M. [University of Texas at Austin, 1 University Station C1400, Austin, TX 78712-0259 (United States); Hsiao, Eric Y. [Carnegie Observatories, Las Campanas Observatory, Colina El Pino, Casilla 601 (Chile); Brown, Peter J. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A and M University, 4242 AMU, College Station, TX 77843 (United States); Filippenko, Alexei V. [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Garnavich, Peter [Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556 (United States); Landsman, Wayne B. [Adnet Systems, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Parrent, Jerod T. [Las Cumbres Observatory Global Telescope Network, Goleta, CA 93117 (United States); Pritchard, Tyler A.; Roming, Peter W. A. [Department of Astronomy and Astrophysics, Penn State University, 525 Davey Lab, University Park, PA 16802 (United States); Wang, Xiaofeng, E-mail: gmarion@cfa.harvard.edu [Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 1,00084 (China)

2013-11-01T23:59:59.000Z

197

ENREGISTREMENT DES MICROPULSATIONS GOMAGNTIQUES UTILISANT DES MAGNTOMTRES A NOYAU SATUR  

E-Print Network [OSTI]

et sovié- tiques [4], pour mesurer le champ magnétique de l'espace extra-terrestre, de grandeur. 2014 On présente une installation d'enregistrement des micropulsations du champ magnétique terrestre

Paris-Sud XI, Université de

198

Fiche technique Dtail des panneaux  

E-Print Network [OSTI]

- Biodiversité des cultures Panneau 4 - Paysage à Madagascar Panneau 5 - Labour d'un champ au Maroc Panneau 6 9 - Récolte d'un essaim d'abeilles au Maroc Panneau 10 - L'innovation en marche Panneau 11

199

Andr Laperrire Laboratoire des technologies  

E-Print Network [OSTI]

, meal cooking,...) Probably not critical for an Indoor Hockey Ice Rink #12;Groupe ­ Technologie9 PERIODAndré Laperrière Laboratoire des technologies de l'énergie d'Hydro-Québec Shawinigan Indoor Ice Rinks and LED Technology 2013 Biannual Joint Meeting of CIE/USA and CNC/CIE University of California (UC

California at Davis, University of

200

Universite d' Avignon et des  

E-Print Network [OSTI]

le sous-problème · TAD dans le Doubs Central · Conclusion et perspectives ´Etude et r et des Pays de Vaucluse www.univ-avignon.fr Plan Contexte, objectifs Contexte · TAD · DARP · R.univ-avignon.fr Plan Contexte, objectifs · Contexte TAD · DARP · R´esolution · Doubs Central · Conclusion et

Ingrand, François

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

COSMOLOGY WITH PHOTOMETRICALLY CLASSIFIED TYPE Ia SUPERNOVAE FROM THE SDSS-II SUPERNOVA SURVEY  

SciTech Connect (OSTI)

We present the cosmological analysis of 752 photometrically classified Type Ia Supernovae (SNe Ia) obtained from the full Sloan Digital Sky Survey II (SDSS-II) Supernova (SN) Survey, supplemented with host-galaxy spectroscopy from the SDSS-III Baryon Oscillation Spectroscopic Survey. Our photometric-classification method is based on the SN classification technique of Sako et al., aided by host-galaxy redshifts (0.05 < z < 0.55). SuperNova ANAlysis simulations of our methodology estimate that we have an SN Ia classification efficiency of 70.8%, with only 3.9% contamination from core-collapse (non-Ia) SNe. We demonstrate that this level of contamination has no effect on our cosmological constraints. We quantify and correct for our selection effects (e.g., Malmquist bias) using simulations. When fitting to a flat {Lambda}CDM cosmological model, we find that our photometric sample alone gives {Omega} {sub m} = 0.24{sup +0.07} {sub -0.05} (statistical errors only). If we relax the constraint on flatness, then our sample provides competitive joint statistical constraints on {Omega} {sub m} and {Omega}{sub {Lambda}}, comparable to those derived from the spectroscopically confirmed Three-year Supernova Legacy Survey (SNLS3). Using only our data, the statistics-only result favors an accelerating universe at 99.96% confidence. Assuming a constant wCDM cosmological model, and combining with H {sub 0}, cosmic microwave background, and luminous red galaxy data, we obtain w = -0.96{sup +0.10} {sub -0.10}, {Omega} {sub m} = 0.29{sup +0.02} {sub -0.02}, and {Omega} {sub k} = 0.00{sup +0.03} {sub -0.02} (statistical errors only), which is competitive with similar spectroscopically confirmed SNe Ia analyses. Overall this comparison is reassuring, considering the lower redshift leverage of the SDSS-II SN sample (z < 0.55) and the lack of spectroscopic confirmation used herein. These results demonstrate the potential of photometrically classified SN Ia samples in improving cosmological constraints.

Campbell, Heather; D'Andrea, Chris B; Nichol, Robert C.; Smith, Mathew; Lampeitl, Hubert [Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 3FX (United Kingdom)] [Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth, PO1 3FX (United Kingdom); Sako, Masao [Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States)] [Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States); Olmstead, Matthew D.; Brown, Peter; Dawson, Kyle S. [Department of Physics and Astronomy, University of Utah, 115 South 1400 East 201, Salt Lake City, UT 84112 (United States)] [Department of Physics and Astronomy, University of Utah, 115 South 1400 East 201, Salt Lake City, UT 84112 (United States); Bassett, Bruce [Mathematics Department, University of Cape Town, Rondebosch, Cape Town (South Africa)] [Mathematics Department, University of Cape Town, Rondebosch, Cape Town (South Africa); Biswas, Rahul; Kuhlmann, Steve [Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439 (United States)] [Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439 (United States); Cinabro, David [Department of Physics and Astronomy, Wayne State University, Detroit, MI 48126 (United States)] [Department of Physics and Astronomy, Wayne State University, Detroit, MI 48126 (United States); Dilday, Ben [Las Cumbres Observatory Global Telescope Network, 6740 Cortona Dr., Suite 102, Goleta, CA 93117 (United States)] [Las Cumbres Observatory Global Telescope Network, 6740 Cortona Dr., Suite 102, Goleta, CA 93117 (United States); Foley, Ryan J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)] [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Frieman, Joshua A. [Department of Astronomy and Astrophysics, The University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States)] [Department of Astronomy and Astrophysics, The University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); Garnavich, Peter [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States)] [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Hlozek, Renee [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)] [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States); Jha, Saurabh W. [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States)] [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Kunz, Martin, E-mail: Heather.Campbell@port.ac.uk [African Institute for Mathematical Sciences, Muizenberg, 7945, Cape Town (South Africa)] [African Institute for Mathematical Sciences, Muizenberg, 7945, Cape Town (South Africa); and others

2013-02-15T23:59:59.000Z

202

Expression des constantes de distorsion centrifuge des hexafluorures en fonction des frquences harmoniques.  

E-Print Network [OSTI]

'application est faite aux molécules SF6 et UF6. 4 constantes cubiques de SF6 ont été déterminées à partir des for the centrifugal distortion constants as a function of harmonic frequencies ; application is made to SF6 and UF6. 4

Paris-Sud XI, Université de

203

Restframe I-band Hubble diagram for type Ia supernovae up to redshift z ~; 0.5  

E-Print Network [OSTI]

in STScI Symposium Ser. 13, Supernovae and gamma-ray bursts:Highlight: The Physics of Supernovae, ed. W. Hillebrandt &diagram for type Ia supernovae up to redshift z ? 0.5 ? S.

2005-01-01T23:59:59.000Z

204

Mechanistic studies of proton-coupled electron transfer in aminotyrosine- and fluorotyrosine- substituted class Ia Ribonucleotide reductase  

E-Print Network [OSTI]

Ribonucleotide reductase (RNR) catalyzes the conversion of nucleotides to 2'- deoxynucleotides in all organisms. The class Ia RNR from Escherichia coli is active as an a2p2 complex and utilizes an unprecedented mechanism ...

Minnihan, Ellen Catherine

2012-01-01T23:59:59.000Z

205

Function of the Diiron Cluster of Escherichia coli Class Ia Ribonucleotide Reductase in Proton-Coupled Electron Transfer  

E-Print Network [OSTI]

The class Ia ribonucleotide reductase (RNR) from Escherichia coli employs a free-radical mechanism, which involves bidirectional translocation of a radical equivalent or hole over a distance of ~35 from the stable ...

Wrsdrfer, Bigna

206

In vivo cofactor biosynthesis and maintenance in the class Ia ribonucleotide reductase small subunit of Escherichia coli  

E-Print Network [OSTI]

The small subunit ([beta]2) of Escherichia coli class Ia ribonucleotide reductases (RNRs) contains a diferric tyrosyl radical (Y*) cofactor essential for the conversion of nucleotides to deoxynucleotides that are needed ...

Wu, Chia-Hung, Ph. D. Massachusetts Institute of Technology

2009-01-01T23:59:59.000Z

207

On the small-scale stability of thermonuclear flames in Type Ia supernovae  

E-Print Network [OSTI]

We present a numerical model which allows us to investigate thermonuclear flames in Type Ia supernova explosions. The model is based on a finite-volume explicit hydrodynamics solver employing PPM. Using the level-set technique combined with in-cell reconstruction and flux-splitting schemes we are able to describe the flame in the discontinuity approximation. We apply our implementation to flame propagation in Chandrasekhar-mass Type Ia supernova models. In particular we concentrate on intermediate scales between the flame width and the Gibson-scale, where the burning front is subject to the Landau-Darrieus instability. We are able to reproduce the theoretical prediction on the growth rates of perturbations in the linear regime and observe the stabilization of the flame in a cellular shape. The increase of the mean burning velocity due to the enlarged flame surface is measured. Results of our simulation are in agreement with semianalytical studies.

F. K. Roepke; J. C. Niemeyer; W. Hillebrandt

2003-05-02T23:59:59.000Z

208

TIDAL TAIL EJECTION AS A SIGNATURE OF TYPE Ia SUPERNOVAE FROM WHITE DWARF MERGERS  

SciTech Connect (OSTI)

The merger of two white dwarfs may be preceded by the ejection of some mass in ''tidal tails,'' creating a circumstellar medium around the system. We consider the variety of observational signatures from this material, which depend on the lag time between the start of the merger and the ultimate explosion (assuming one occurs) of the system in a Type Ia supernova (SN Ia). If the time lag is fairly short, then the interaction of the supernova ejecta with the tails could lead to detectable shock emission at radio, optical, and/or X-ray wavelengths. At somewhat later times, the tails produce relatively broad NaID absorption lines with velocity widths of the order of the white dwarf escape speed ({approx}1000 km s{sup -1}). That none of these signatures have been detected in normal SNe Ia constrains the lag time to be either very short ({approx}< 100 s) or fairly long ({approx}> 100 yr). If the tails have expanded and cooled over timescales {approx}10{sup 4} yr, then they could be observable through narrow NaID and Ca II H and K absorption lines in the spectra, which are seen in some fraction of SNe Ia. Using a combination of three-dimensional and one-dimensional hydrodynamical codes, we model the mass loss from tidal interactions in binary systems, and the subsequent interactions with the interstellar medium, which produce a slow-moving, dense shell of gas. We synthesize NaID line profiles by ray casting through this shell, and show that in some circumstances tidal tails could be responsible for narrow absorptions similar to those observed.

Raskin, Cody; Kasen, Daniel [Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA (United States)

2013-07-20T23:59:59.000Z

209

Especialista Universitario Java Enterprise 2010-2011 Depto. Ciencia de la Computacin e IA  

E-Print Network [OSTI]

Especialista Universitario Java Enterprise © 2010-2011 Depto. Ciencia de la Computación e IA Sesión 1: Introducción a JMS #12;Servicios de Mensajes con JMS © 2010-2011 Depto. Ciencia de la Computación · Una Aplicación JMS · PTP · Pub/Sub #12;Servicios de Mensajes con JMS © 2010-2011 Depto. Ciencia de la

Escolano, Francisco

210

IA --"-IScience Service Featuse 'I WHY T i E IJEAYIiER ?  

E-Print Network [OSTI]

No. 591 April 3 IA --"-IScience Service Featuse 'I WHY T i E IJEAYIiER ? II city located oa the Ice.pp';g a% Bidialo, The ice c h i l l s a t h i n laye:. of a i r aver the Sake aridto laewwd. NOW$ vhen r may be srrfficionl t o produce a sheet cloud and g i ~ eBuffalo a day not oalg dwnt arid chilly Lu

211

Experto Universitario Java Enterprise Componentes de presentacin 2012-2013 Depto. Ciencia de la Computacin e IA Sesin 1  

E-Print Network [OSTI]

Experto Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia de la Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia de la Computación e IA Componentes de presentación © 2012-2013 Depto. Ciencia de la Computación e IA Sesión 1 Experto Universitario

Escolano, Francisco

212

Especialista Universitario Java Enterprise Componentes de presentacin 2012-2013 Depto. Ciencia de la Computacin e IA Sesin 4  

E-Print Network [OSTI]

Especialista Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia presentación © 2012-2013 Depto. Ciencia de la Computación e IA Sesión 4 Experto Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia de la Computación e IA Sesión 4 Experto Universitario

Escolano, Francisco

213

L'importance des probabilits a priori pour la recherche des pages d'entre1  

E-Print Network [OSTI]

Search », Proceedings of the 25th annual international ACM SIGIR Conference on Research and Cevelopment structure des liens, les URL et les textes d'ancrage sont des sources intéressantes d'information pour la

Hiemstra, Djoerd

214

Is the X-ray pulsating companion of HD 49798 a possible type Ia supernova progenitor?  

E-Print Network [OSTI]

HD 49798 (a hydrogen depleted subdwarf O6 star) with its massive white dwarf (WD) companion has been suggested to be a progenitor candidate of type Ia supernovae (SNe Ia). However, it is still uncertain whether the companion of HD 49798 is a carbon-oxygen (CO) WD or an oxygen-neon (ONe) WD. A CO WD will explode as an SN Ia when its mass grows approach to Chandrasekhar mass, while the outcome of an accreting ONe WD is likely to be a neutron star. We followed a series of Monte Carlo binary population synthesis approach to simulate the formation of ONe WD + He star systems. We found that there is almost no orbital period as large as HD 49798 with its WD companion in these ONe WD + He star systems based on our simulations, which means that the companion of HD 49798 might not be an ONe WD. We suggest that the companion of HD 49798 is most likely a CO WD, which can be expected to increase its mass to the Chandrasekhar mass limit by accreting He-rich material from HD 49798. Thus, HD 49798 with its companion may prod...

Liu, Dong-Dong; Wu, Cheng-Yuan; Wang, Bo

2015-01-01T23:59:59.000Z

215

Evaluation of copper for divider subassembly in MCO Mark IA and Mark IV scrap fuel baskets  

SciTech Connect (OSTI)

The K Basin Spent Nuclear Fuel (SNF) Project Multi-Canister Overpack (MCO) subprojection eludes the design and fabrication of a canister that will be used to confine, contain, and maintain fuel in a critically safe array to enable its removal from the K Basins, vacuum drying, transport, staging, hot conditioning, and interim storage (Goldinann 1997). Each MCO consists of a shell, shield plug, fuel baskets (Mark IA or Mark IV), and other incidental equipment. The Mark IA intact and scrap fuel baskets are a safety class item for criticality control and components necessary for criticality control will be constructed from 304L stainless steel. It is proposed that a copper divider subassembly be used in both Mark IA and Mark IV scrap baskets to increase the safety basis margin during cold vacuum drying. The use of copper would increase the heat conducted away from hot areas in the baskets out to the wall of the MCO by both radiative and conductive heat transfer means. Thus copper subassembly will likely be a safety significant component of the scrap fuel baskets. This report examines the structural, cost and corrosion consequences associated with using a copper subassembly in the stainless steel MCO scrap fuel baskets.

Graves, C.E.

1997-09-29T23:59:59.000Z

216

Observations of Type Ia Supernova 2014J with FLITECAM/SOFIA  

E-Print Network [OSTI]

We present medium resolution near-infrared (NIR) spectra, covering 1.1 to 3.4 microns, of the normal Type Ia supernova (SN Ia) SN 2014J in M82 obtained with the FLITECAM instrument aboard SOFIA approximately 17-25 days after maximum B light. Our 2.8-3.4 micron spectra may be the first ~3 micron spectra of a SN Ia ever published. The spectra spanning the 1.5-2.7 micron range are characterized by a strong emission feature at ~1.77 microns with a full width at half maximum of ~11,000-13,000 km/s. We compare the observed FLITECAM spectra to the recent non-LTE delayed detonation models of Dessart et al. (2014) and find that the models agree with the spectra remarkably well in the 1.5-2.7 micron wavelength range. Based on this comparison we identify the ~1.77 micron emission peak as a blend of permitted lines of Co II. Other features seen in the 2.0 - 2.5 micron spectra are also identified as emission from permitted transitions of Co II. However, the models are not as successful at reproducing the spectra in the 1....

Vacca, William D; Savage, Maureen; Shenoy, Sachindev; Becklin, E E; McLean, Ian S; Logsdon, Sarah E; Gehrz, R D; Spyromilio, J; Garnavich, P; Marion, G H; Fox, O D

2015-01-01T23:59:59.000Z

217

Observational constraints from SNe Ia and Gamma-Ray Bursts on a clumpy universe  

E-Print Network [OSTI]

The luminosity distance describing the effect of local inhomogeneities in the propagation of light proposed by Zeldovich-Kantowski-Dyer-Roeder (ZKDR) is tested with two probes for two distinct ranges of redshifts: supernovae Ia (SNe Ia) in 0.015 gamma-ray bursts (GRBs) in 1.547 < z < 3.57. Our analysis is performed by a Markov Chain Monte Carlo (MCMC) code that allows us to constrain the matter density parameter \\Omega_m as well as the smoothness parameter $\\alpha$ that measures the inhomogeneous-homogeneous rate of the cosmic fluid in a flat \\LambdaCDM model. The obtained best fits are (\\Omega_m=0.285^{+0.019}_{-0.018}, \\alpha= 0.856^{+0.106}_{-0.176}) from SNe Ia and (\\Omega_m=0.259^{+0.028}_{-0.028}, \\alpha=0.587^{+0.201}_{-0.202}) from GRBs, while from the joint analysis the best fits are (\\Omega_m=0.284^{+0.021}_{-0.020}, \\alpha= 0.685^{+0.164}_{-0.171}) with a \\chi^2_{\\rm red}=0.975. The value of the smoothness parameter $\\alpha$ indicates a clumped universe however it does not have an impact on the amount of dark energy (cosmological constant) needed to fit observations. This result may be an indication that the Dyer-Roeder approximation does not describe in a precise form the effects of clumpiness in the expansion of the universe.

Nora Bretn; Ariadna Montiel

2013-03-06T23:59:59.000Z

218

Subclasses of Type Ia Supernovae as the origin of [\\alpha/Fe] ratios in dwarf spheroidal galaxies  

E-Print Network [OSTI]

Recent extensive observations of Type Ia Supernovae (SNe Ia) have revealed the existence of a diversity of SNe Ia, including SN 2002cx-like objects (also called SN Iax). We introduce two possible channels in the single degenerate scenario: 1) double detonations in sub-Chandrasekhar (Ch) mass CO white dwarfs (WDs), where a thin He envelope is developed with relatively low accretion rates after He novae even at low metallicities, and 2) carbon deflagrations in Ch-mass possibly hybrid C+O+Ne WDs, where WD winds occur at [Fe/H] ~ -2.5 at high accretion rates. These subclasses of SNe Ia are rarer than `normal' SNe Ia and do not affect the chemical evolution in the solar neighborhood, but can be very important in metal-poor systems with stochastic star formation. In dwarf spheroidal galaxies in the Local Group, the decrease of [\\alpha/Fe] ratios at [Fe/H] ~ -2 to -1.5 can be produced depending on the star formation history. SNe Iax give high [Mn/Fe], while sub-Ch-mass SNe Ia give low [Mn/Fe], and thus a model inclu...

Kobayashi, Chiaki; Hachisu, Izumi

2015-01-01T23:59:59.000Z

219

Nr. 129 / 2011 // 12. Juli 2011 Empfehlung des Wissenschaftsrates  

E-Print Network [OSTI]

. Der Leiter des Forschungszentrums für Bio-Makromoleküle und des Lehrstuhls für Biopolymere, Prof. Dr PD Dr. Stephan Schwarzinger, Mitglied des Lehrstuhls für Biopolymere. biologie und Molekularmedizin

Ullmann, G. Matthias

220

Partager : des technologies de pointe au service de la socit  

ScienceCinema (OSTI)

Mdecine, climatologie, mtrologie et informatique, les techniques utilises par le LHC trouvent dj des rpercussions dans d?autres domaines scientifiques. Utilisant des techniques indites, la physique des particules en fait bnficier la socit toute entire.

None

2011-10-06T23:59:59.000Z

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Introduction L'Encyclopdie des Carabes ou Encyclopdie des Kali'na du Suriname  

E-Print Network [OSTI]

Introduction « L'Encyclopédie des Caraïbes » ou Encyclopédie des Kali'na du Suriname Odile Renault Suriname, jusqu'à la deuxième moitié du 20ème siècle5, pour désigner les peuples et langues de famille étude comparée des langues de la famille caribe du Suriname, ainsi que des descriptions grammaticales et

Boyer, Edmond

222

DES Chapter 4DES Chapter 4 Estimating the Value of ACME  

E-Print Network [OSTI]

Estimate cost of capital (WACC) Debt Equity P j t fi i l t t t d FCFProject financial statements and FCF ACME has debt and equity The cost of capital for each type of financing depends on it riskDES Chapter 4DES Chapter 4 Estimating the Value of ACME DES Chapter 4 1 #12;Steps in a valuation

Schubart, Christoph

223

CONTRIBUTION L'TUDE DE LA GENSE DES SYSTMES D'INFORMATION COMPTABLE DES  

E-Print Network [OSTI]

) souffrent traditionnellement d'une carence au niveau des outils de gestion utiliss. Ce qui contribuerait intuition une analyse davantage formelle, avec diffrents outils de gestion (Chapellier, 1994). Aussi, le1 CONTRIBUTION L'TUDE DE LA GENSE DES SYSTMES D'INFORMATION COMPTABLE DES PME : UNE RECHERCHE

Paris-Sud XI, Universit de

224

Influence de la teneur en lignines des aliments sur la composition des digesta et la production  

E-Print Network [OSTI]

Note Influence de la teneur en lignines des aliments sur la composition des digesta et la essentiellement par leur teneur en lignines Van Soest : 7,4 ; 12,8 et 16 p. 100. Les contenus de l'estomac, de l trois heures, durant 24 heures. L'accroissement de la teneur en lignines des aliments augmente la teneur

Paris-Sud XI, Université de

225

Solar Car  

SciTech Connect (OSTI)

Des Moines Central Academy Middle School students compete in the Solar Car Challenge at the National Science Bowl, May 2 in Washington D.C.

None

2010-01-01T23:59:59.000Z

226

CIMAT, VI Escuela de verano, 25 de julio 7 de agosto 1999 Introducci'on a la Geometr'ia de la Mec'anica Cl'asica  

E-Print Network [OSTI]

parametrizada por (x(t); ?? x(t)): (d) Dibujar las gr'aficas de su energ'ia cin'etica T = ( ?? x) 2 =2 y potencial­ vaci'on de energ'ia, E = T + V = constante: (e) Repetir los 4 incisos anteriores con x(1) = 2; ?? x(0CIMAT, VI Escuela de verano, 25 de julio ­ 7 de agosto 1999 Introducci'on a la Geometr'ia de la Mec

Bor, Gil

227

CIMAT, VI Escuela de verano, 25 de julio -7 de agosto 1999 Introducci'on a la Geometr'ia de la Mec'anica Cl'asica  

E-Print Network [OSTI]

(t), `x(t)). (d)Dibujar las gr'aficas de su energ'ia cin'etica T = (x`)2=2 y potencial* * V = x2- vaci'on de energ'ia, E = T + V = constante. (e)Repetir los 4 incisos anteriores con x(1) = 2, `x CIMAT, VI Escuela de verano, 25 de julio - 7 de agosto 1999 Introducci'on a la Geometr'ia de la

Bor, Gil

228

Design Project -SIE 2010 Inventaire des missions  

E-Print Network [OSTI]

miscanthus Mise en place d'un outil d'aide la dcision pour la gestion des sites contamins: le cas de la gestion des parcelles de terrain contamines autour de l'ancienne usine de Metaleurop Nord en se: NOx, particules fines, Zn, Al, CO2, NH3 et Atrazine (pesticides) Mesures au niveau rgional Gestion

229

Anne Bamberg* Former des prtres Sourds  

E-Print Network [OSTI]

, Understanding Deaf Culture. In Search of Deafhood, Clevedon, Buffalo, Toronto, Sydney, Multilingual Matters Philippe Furtado, Le Père Agustin Yanes Valer prêtre sourd en Espagne, in Le lien des sourds catholiques et dans le monde et le Témoignage d'un prêtre sourd, in Le lien des sourds catholiques et de leurs amis, 9

Boyer, Edmond

230

IS WX CEN A POSSIBLE TYPE Ia SUPERNOVA PROGENITOR WITH WIND-DRIVEN MASS TRANSFER?  

SciTech Connect (OSTI)

WX Cen is one of a few compact binary supersoft X-ray sources (CBSS) in the Galaxy that is a possible Type Ia supernova (SN Ia) progenitor. The supersoft X-ray radiation is explained as hydrostatic nuclear burning on the surface of the white dwarf component that is accreting hydrogen from a stellar companion at a high rate. If the mass donor in this system has a low mass, as has been suggested in the literature, one would expect a high wind-driven mass transfer rate. In that case, the orbital period of the system should increase. To test this theoretical prediction, we have monitored the system photometrically since 2010. By using four newly determined eclipse timings together with those collected from the literature, we discovered that the orbital period is decreasing at a rate of dP/dt = -5.15 Multiplication-Sign 10{sup -7} days yr{sup -1}. The long-term decrease in the orbital period is contrary to the prediction that the system is powered by wind-driven accretion. It therefore seems plausible that the mass donor could be more massive than the white dwarf, and that the mass transfer is driven by the thermal instability of the donor star. This finding suggests that WX Cen is a key object to check the physical mechanisms of mass accretion in CBSS. The corresponding timescale of the period change is about P/P-dot {approx} 0.81 x 10{sup 6} yr, indicating that WX Cen may evolve into an SNe Ia within one million years in the Galaxy.

Qian, S.-B.; Shi, G.; Zhu, L.-Y.; Liu, L.; Zhao, E.-G.; Li, L.-J. [Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650011 Kunming (China); Fernandez Lajus, E.; Di Sisto, R. P., E-mail: qsb@ynao.ac.cn [Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, 1900 La Plata, Buenos Aires (Argentina)

2013-08-01T23:59:59.000Z

231

On the thermonuclear runaway in Type Ia supernovae: How to run away  

E-Print Network [OSTI]

Type Ia Supernovae are thought to be thermonuclear explosions of massive white dwarfs (WD). We present the first study of multi-dimensional effects during the final hours prior to the thermonuclear runaway which leads to the explosion. The calculations utilize an implicit, 2-D hydrodynamical code. Mixing and the ignition process are studied in detail. We find that the initial chemical structure of the WD is changed but the material is not fully homogenized. In particular, the exploding WD sustains a central region with a low C/O ratio. This implies that the explosive nuclear burning will begin in a partially carbon-depleted environment. The thermonuclear runaway happens in a well defined region close to the center. It is induced by compressional heat when matter is brought inwards by convective flows. We find no evidence for multiple spot or strong off-center ignition. Convective velocities in the WD are of the order of 100 km/sec which is well above the effective burning speeds in SNe Ia previously expected right after the runaway. For ? 0.5 to 1 sec, the speed of the burning front will neither be determined by the laminar speed nor the Rayleigh-Taylor instabilities but by convective flows produced prior to the runaway. The consequences are discussed for our understanding of the detailed physics of the flame propagation, the deflagration detonation transition, and the nucleosynthesis in the central layers. Our results strongly suggest the pre-conditioning of the progenitor as a key factor for our understanding of the diversity in Type Ia Supernovae.

P. Hflich; J. Stein

2002-01-01T23:59:59.000Z

232

On the Thermonuclear Runaway in Type Ia Supernovae: How to run away?  

E-Print Network [OSTI]

Type Ia Supernovae are thought to be thermonuclear explosions of massive white dwarfs (WD). We present the first study of multi-dimensional effects during the final hours prior to the thermonuclear runaway which leads to the explosion. The calculations utilize an implicit, 2-D hydro code.Mixing and the ignition process are studied in detail. We find that the initial chemical structure of the WD is changed but the material is not fully homogenized. The exploding WD sustains a central region with a low C/O ratio. This implies that the explosive nuclear burning will begin in a partially C-depleted environment. The thermonuclear runaway happens in a well defined region close to the center. It is induced by compressional heat when matter is brought inwards by convective flows. We find no evidence for multiple spot or strong off-center ignition. Convective velocities are of the order of 100 km/sec which is well above the effective burning speeds in SNe Ia previously expected right after the runaway. For about 0.5 to 1 sec, the speed of the burning front will neither be determined by the laminar speed nor the Rayleigh-Taylor instabilities but by convective flows produced prior to the runaway. The consequences are discussed for our under- standing of the detailed physics of the flame propagation, the deflagration detonation transition, and the nucleosynthesis in the central layers. Our results strongly suggest the pre-conditioning of the progenitor as a key-factor for our understanding of the diversity in SNeIa.

P. Hoeflich; J. Stein

2001-12-07T23:59:59.000Z

233

The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-masswhite dwarf star  

SciTech Connect (OSTI)

The acceleration of the expansion of the universe, and theneed for Dark Energy, were inferred from the observations of Type Iasupernovae (SNe Ia) 1;2. There is consensus that SNeIa are thermonuclearexplosions that destroy carbon-oxygen white dwarf stars that accretematter from a companion star3, although the nature of this companionremains uncertain. SNe Ia are thought to be reliable distance indicatorsbecause they have a standard amount of fuel and a uniform trigger theyare predicted to explode when the mass of the white dwarf nears theChandrasekhar mass 4 - 1.4 solar masses. Here we show that the highredshift supernova SNLS-03D3bb has an exceptionally high luminosity andlow kinetic energy that both imply a super-Chandrasekhar mass progenitor.Super-Chandrasekhar mass SNeIa shouldpreferentially occur in a youngstellar population, so this may provide an explanation for the observedtrend that overluminous SNe Ia only occur in young environments5;6. Sincethis supernova does not obey the relations that allow them to becalibrated as standard candles, and since no counterparts have been foundat low redshift, future cosmology studies will have to considercontamination from such events.

Howell, D.Andrew; Sullivan, Mark; Nugent, Peter E.; Ellis,Richard S.; Conley, Alexander J.; Le Borgne, Damien; Carlberg, RaymondG.; Guy, Julien; Balam, David; Basa, Stephane; Fouchez, Dominique; Hook,Isobel M.; Hsiao, Eric Y.; Neill, James D.; Pain, Reynald; Perrett,Kathryn M.; Pritchet, Christopher J.

2006-02-01T23:59:59.000Z

234

A super-Eddington wind scenario for the progenitors of type Ia supernovae: binary population synthesis calculations  

E-Print Network [OSTI]

The super-Eddington wind scenario has been proposed as an alternative way for producing type Ia supernovae (SNe Ia). The super-Eddington wind can naturally prevent the carbon--oxygen white dwarfs (CO WDs) with high mass-accretion rates from becoming red-giant-like stars. Furthermore, it works in low-metallicity environments, which may explain SNe Ia observed at high redshifts. In this article, we systematically investigated the most prominent single-degenerate WD+MS channel based on the super-Eddington wind scenario. We combined the Eggleton stellar evolution code with a rapid binary population synthesis (BPS) approach to predict SN Ia birthrates for the WD+MS channel by adopting the super-Eddington wind scenario and detailed mass-accumulation efficiencies of H-shell flashes on the WDs. Our BPS calculations found that the estimated SN Ia birthrates for the WD+MS channel are ~0.009-0.315*10^{-3}{yr}^{-1} if we adopt the Eddington accretion rate as the critical accretion rate, which are much lower than that of ...

Wang, Bo; Liu, Dongdong; Liu, Zhengwei; Wu, Chengyuan; Zhang, Jujia; Han, Zhanwen

2015-01-01T23:59:59.000Z

235

Testing the isotropy of the Universe by using the JLA compilation of type-Ia supernovae  

E-Print Network [OSTI]

We probe the possible anisotropy in the accelerated expanding Universe by using the JLA compilation of type-Ia supernovae. We constrain the amplitude and direction of anisotropy in the anisotropic cosmological models. For the dipole-modulated $\\Lambda$CDM model, the anisotropic amplitude has an upper bound $D<1.04\\times10^{-3}$ at the $68\\%$ confidence level. Similar results are found in the dipole-modulated $w$CDM and CPL models. Our studies show that there are no significant evidence for the anisotropic expansion of the Universe. Thus the Universe is still well compatible with the isotropy.

Lin, Hai-Nan; Chang, Zhe; Li, Xin

2015-01-01T23:59:59.000Z

236

On the Stability of Thermonuclear Burning Fronts in Type Ia Supernovae  

E-Print Network [OSTI]

Summary. The propagation of cellularly stabilized thermonuclear flames is investigated by means of numerical simulations. In Type Ia supernova explosions the corresponding burning regime establishes at scales below the Gibson length. The cellular flame stabilizationwhich is a result of an interplay between the Landau-Darrieus instability and a nonlinear stabilization mechanismis studied for the case of propagation into quiescent fuel as well as interaction with vortical fuel flows. Our simulations indicate that in thermonuclear supernova explosions stable cellular flames develop around the Gibson scale and that a deflagration-to-detonation transition is unlikely to be triggered from flame evolution effects here. 1

F. K. Rpke; W. Hillebr

2004-01-01T23:59:59.000Z

237

Reconstruction of Hessence Dark Energy and the Latest Type Ia Supernovae Gold Dataset  

E-Print Network [OSTI]

Recently, many efforts have been made to build dark energy models whose equation-of-state parameter can cross the so-called phantom divide $w_{de}=-1$. One of them is the so-called hessence dark energy model in which the role of dark energy is played by a non-canonical complex scalar field. In this work, we develop a simple method based on Hubble parameter $H(z)$ to reconstruct the hessence dark energy. As examples, we use two familiar parameterizations for $H(z)$ and fit them to the latest 182 type Ia supernovae Gold dataset. In the reconstruction, measurement errors are fully considered.

Hao Wei; Ningning Tang; Shuang Nan Zhang

2007-02-28T23:59:59.000Z

238

Reconstruction of a Deceleration Parameter from the Latest Type Ia Supernovae Gold Dataset  

E-Print Network [OSTI]

In this paper, a parameterized deceleration parameter $q(z)= 1/2 - a/(1 + z)^b$ is reconstructed from the latest type Ia supernovae gold dataset. It is found out that the transition redshift from decelerated expansion to accelerated expansion is at $z_T=0.35^{+0.14}_{-0.07}$ with $1\\sigma$ confidence level in this parameterized deceleration parameter. And, the best fit values of parameters in $1\\sigma$ errors are $a=1.56^{+0.99}_{-0.55}$ and $b=3.82^{+3.70}_{-2.27}$.

Lixin Xu; Chengwu Zhang; Baorong Chang; Hongya Liu

2007-01-17T23:59:59.000Z

239

Gamma-Rays as Probes for the Multi-Dimensionality of Type Ia Supernovae  

E-Print Network [OSTI]

We present $\\gamma $-ray spectra for a set of Type Ia supernovae models. Our study is based on a detailed Monte Carlo transport scheme for both spherical and full 3-D geometries. Classical and new challenges of the $\\gamma $ ray astronomy are addressed. We find that $\\gamma $-rays are very suitable to reveal the structure of the envelope and, thus, they allow to probe properties of the nuclear burning front and the progenitor, namely its central density and global asphericities. The potential problems are discussed for the quantitative comparison between theoretical and observed line fluxes during the first few months after the explosion.

P. Hoeflich

2001-10-03T23:59:59.000Z

240

On the Stability of Thermonuclear Burning Fronts in Type Ia Supernovae  

E-Print Network [OSTI]

The propagation of cellularly stabilized thermonuclear flames is investigated by means of numerical simulations. In Type Ia supernova explosions the corresponding burning regime establishes at scales below the Gibson length. The cellular flame stabilization - which is a result of an interplay between the Landau-Darrieus instability and a nonlinear stabilization mechanism - is studied for the case of propagation into quiescent fuel as well as interaction with vortical fuel flows. Our simulations indicate that in thermonuclear supernova explosions stable cellular flames develop around the Gibson scale and that deflagration-to-detonation transition is unlikely to be triggered from flame evolution effects here.

F. K. Roepke; W. Hillebrandt

2004-04-26T23:59:59.000Z

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

IA REP0 SAND85-2809 Unlimited Release UC-92A  

Office of Scientific and Technical Information (OSTI)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinan antagonist Journal Article: Crystal structureComposite--FORRemarksHEATINGI _ _ ORNL-6161 OAK*I.IA

242

File:USDA-CE-Production-GIFmaps-IA.pdf | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublicIDAPowerPlantSitingConstruction.pdfNotify98.pdf Jump to: navigation,storage plan reviewformP2.pdfFL.pdfIA.pdf

243

Note d'information Contribution la matrise des problmes  

E-Print Network [OSTI]

Note d'information Contribution la matrise des problmes biologiques des stations d et priv (encadr ) qui se consacre la gestion des aspects biologiques des stations d'pu- ration'une tude de cas ; ou la mise en place d'tudes spcifiques sur un sujet qui le ncessite. Dans tous les cas

Boyer, Edmond

244

Untersuchungen zur Messung von Elektronen im au eren Randbereich des  

E-Print Network [OSTI]

, eine reduzierte Elektronenenergie gemessen. Die minimale Energie des gestreuten Elektrons tritt bei

245

Science du sol Le phosphore assimilable des sols : sa reprsentation  

E-Print Network [OSTI]

Science du sol Le phosphore assimilable des sols : sa représentation par un modèle fonctionnel à'échange isotopique des ions phosphate permet de démon- trer que le phosphore (P) biodisponible des sols est un des fertilisations excédentaires de phosphore modifient tous les compartiments. Cette représentation

Boyer, Edmond

246

E-Print Network 3.0 - avec des plasmas Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DES PLASMAS A DEUX COMPOSANTES Summary: 'QUILIBRE DES PLASMAS A DEUX COMPOSANTES C. DEUTSCH Physique des Plasmas, Universit Paris-Sud, 91405 Orsay... , France Rsum. -- Les...

247

Etude des possibilits d'utilisation agronomique des composts d'ordures mnagres en milieu tropical (1)  

E-Print Network [OSTI]

Etude des possibilits d'utilisation agronomique des composts d'ordures mnagres en milieu'avre ncessaire uniquement en saison sche pour obtenir un compost dont le rapport C/N se situe autour de Ordures les composts des paysompos age. industrialiss. La proportion quilibre des oligo-lments et la

Paris-Sud XI, Universit de

248

Inference for the dark energy equation of state using Type IA supernova data  

E-Print Network [OSTI]

The surprising discovery of an accelerating universe led cosmologists to posit the existence of "dark energy"--a mysterious energy field that permeates the universe. Understanding dark energy has become the central problem of modern cosmology. After describing the scientific background in depth, we formulate the task as a nonlinear inverse problem that expresses the comoving distance function in terms of the dark-energy equation of state. We present two classes of methods for making sharp statistical inferences about the equation of state from observations of Type Ia Supernovae (SNe). First, we derive a technique for testing hypotheses about the equation of state that requires no assumptions about its form and can distinguish among competing theories. Second, we present a framework for computing parametric and nonparametric estimators of the equation of state, with an associated assessment of uncertainty. Using our approach, we evaluate the strength of statistical evidence for various competing models of dark energy. Consistent with current studies, we find that with the available Type Ia SNe data, it is not possible to distinguish statistically among popular dark-energy models, and that, in particular, there is no support in the data for rejecting a cosmological constant. With much more supernova data likely to be available in coming years (e.g., from the DOE/NASA Joint Dark Energy Mission), we address the more interesting question of whether future data sets will have sufficient resolution to distinguish among competing theories.

Christopher Genovese; Peter Freeman; Larry Wasserman; Robert Nichol; Christopher Miller

2009-05-18T23:59:59.000Z

249

Variable Selection for Modeling the Absolute Magnitude at Maximum of Type Ia Supernovae  

E-Print Network [OSTI]

We discuss what is an appropriate set of explanatory variables in order to predict the absolute magnitude at the maximum of Type Ia supernovae. In order to have a good prediction, the error for future data, which is called the "generalization error," should be small. We use cross-validation in order to control the generalization error and LASSO-type estimator in order to choose the set of variables. This approach can be used even in the case that the number of samples is smaller than the number of candidate variables. We studied the Berkeley supernova database with our approach. Candidates of the explanatory variables include normalized spectral data, variables about lines, and previously proposed flux-ratios, as well as the color and light-curve widths. As a result, we confirmed the past understanding about Type Ia supernova: i) The absolute magnitude at maximum depends on the color and light-curve width. ii) The light-curve width depends on the strength of Si II. Recent studies have suggested to add more va...

Uemura, Makoto; Kawabata, S; Ikeda, Shiro; Maeda, Keiichi

2015-01-01T23:59:59.000Z

250

Smoothed Particle Hydrodynamics simulations of the core-degenerate scenario for Type Ia supernovae  

E-Print Network [OSTI]

The core-degenerate (CD) scenario for type Ia supernovae (SN Ia) involves the merger of the hot core of an asymptotic giant branch (AGB) star and a white dwarf, and might contribute a non-negligible fraction of all thermonuclear supernovae. Despite its potential interest, very few studies, and based on only crude simplifications, have been devoted to investigate this possible scenario, compared with the large efforts invested to study some other scenarios. Here we perform the first three-dimensional simulations of the merger phase, and find that this process can lead to the formation of a massive white dwarf, as required by this scenario. We consider two situations, according to the mass of the circumbinary disk formed around the system during the final stages of the common envelope phase. If the disk is massive enough, the stars merge on a highly eccentric orbit. Otherwise, the merger occurs after the circumbinary disk has been ejected and gravitational wave radiation has brought the stars close to the Roche...

Aznar-Sigun, G; Lorn-Aguilar, P; Soker, N; Kashi, A

2015-01-01T23:59:59.000Z

251

Spectroscopic Observations and Analysis of the Unusual Type Ia SN1999ac  

SciTech Connect (OSTI)

The authors present optical spectra of the peculiar Type Ia supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual in several respects. prior to B-band maximum, the spectra resemble those of SN 1999aa, a slowly declining event, but possess stronger Si II and Ca II signatures (more characteristic of a spectroscopically normal SN). Spectra after B-band maximum appear more normal. The expansion velocities inferred from the Iron lines appear to be lower than average; whereas, the expansion velocity inferred from Calcium H and K are higher than average. The expansion velocities inferred from the Iron lines appear to be lower than average; whereas, the expansion velocity inferred from Calcium H and K are higher than average. The expansion velocities inferred from Si II are among the slowest ever observed, though SN 1999ac is not particularly dim. The analysis of the parameters v{sub 10}(Si II), R(Si II), v, and {Delta}m{sub 15} further underlines the unique characteristics of SN 1999ac. They find convincing evidence of C II {lambda}6580 in the day -15 spectrum with ejection velocity v > 16,000 km s{sup -1}, but this signature disappears by day -9. This rapid evolution at early times highlights the importance of extremely early-time spectroscopy.

Garavini, G.; Aldering, G.; Amadon, A.; Amanullah, R.; Astier,P.; Balland, C.; Blanc, G.; Conley, A.; Dahlen, T.; Deustua, S.E.; Ellis,R.; Fabbro, S.; Fadeyev, V.; Fan, X.; Folatelli, G.; Frye, B.; Gates,E.L.; Gibbons, R.; Goldhaber, G.; Goldman, B.; Goobar, A.; Groom, D.E.; Haissinski, J.; Hardin, D.; Hook, I.; Howell, D.A.; Kent, S.; Kim, A.G.; Knop, R.A.; Kowalski, M.; Kuznetsova, N.; Lee, B.C.; Lidman, C.; Mendez,J.; Miller, G.J.; Moniez, M.; Mouchet, M.; Mourao, A.; Newberg, H.; Nobili, S.; Nugent, P.E.; Pain, R.; Perdereau, O.; Perlmutter, S.; Quimby, R.; Regnault, N.; Rich, J.; Richards, G.T.; Ruiz-Lapuente, P.; Schaefer, B.E.; Schahmaneche, K.; Smith, E.; Spadafora, A.L.; Stanishev,V.; Thomas, R.C.; Walton, N.A.; Wang, L.; Wood-Vasey, W.M.

2005-07-12T23:59:59.000Z

252

Constraining the Type Ia Supernova Progenitor: The Search for Hydrogen in Nebular Spectra  

E-Print Network [OSTI]

Despite intense scrutiny, the progenitor system(s) that gives rise to Type Ia supernovae remains unknown. The favored theory invokes a carbon-oxygen white dwarf accreting hydrogen-rich material from a close companion until a thermonuclear runaway ensues that incinerates the white dwarf. However, simulations resulting from this single-degenerate, binary channel demand the presence of low-velocity H-alpha emission in spectra taken during the late nebular phase, since a portion of the companion's envelope becomes entrained in the ejecta. This hydrogen has never been detected, but has only rarely been sought. Here we present results from a campaign to obtain deep, nebular-phase spectroscopy of nearby Type Ia supernovae, and include multi-epoch observations of two events: SN 2005am (slightly subluminous) and SN 2005cf (normally bright). No H-alpha emission is detected in the spectra of either object. An upper limit of 0.01 M_Sun of solar abundance material in the ejecta is established from the models of Mattila et al. which, when coupled with the mass-stripping simulations of Marietta et al. and Meng et al. effectively rules out progenitor systems for these supernovae with secondaries close enough to the white dwarf to be experiencing Roche lobe overflow at the time of explosion. Alternative explanations for the absence of H-alpha emission, along with suggestions for future investigations necessary to confidently exclude them as possibilities, are critically evaluated.

Douglas C. Leonard

2007-10-16T23:59:59.000Z

253

First Evidence of Globular Cluster Formation from the Ejecta of Prompt Type Ia Supernovae  

E-Print Network [OSTI]

Recent spectroscopic observations of globular clusters (GCs) in the Large Magellanic Cloud (LMC) have discovered that one of the intermediate-age GC, NGC 1718 with [Fe/H]=-0.7 has an extremely low [Mg/Fe] ratio of ~-0.9. We propose that NGC 1718 was formed from the ejecta of type Ia supernovae (SNe Ia) mixed with very metal-poor ([Fe/H] <-1.3) gas about ~ 2 Gyr ago. The proposed scenario is shown to be consistent with the observed abundances of Fe-group elements such as Cr, Mn, and Ni. In addition, compelling evidence for asymptotic giant branch stars playing a role in chemical enrichment during this GC formation is found. We suggest that the origin of the metal-poor gas is closely associated with the efficient gas-transfer from the outer gas disk of the Small Magellanic Cloud to the LMC disk. We anticipate that the outer part of the LMC disk contains field stars exhibiting significantly low [Mg/Fe] ratios, formed through the same process as NGC 1718.

Tsujimoto, Takuji

2012-01-01T23:59:59.000Z

254

Verifying the Cosmological Utility of Type Ia Supernovae:Implications of a Dispersion in the Ultraviolet Spectra  

SciTech Connect (OSTI)

We analyze the mean rest-frame ultraviolet (UV) spectrum ofType Ia Supernovae(SNe) and its dispersion using high signal-to-noiseKeck-I/LRIS-B spectroscopyfor a sample of 36 events at intermediateredshift (z=0.5) discoveredby the Canada-France-Hawaii TelescopeSupernova Legacy Survey (SNLS). Weintroduce a new method for removinghost galaxy contamination in our spectra,exploiting the comprehensivephotometric coverage of the SNLS SNe and theirhost galaxies, therebyproviding the first quantitative view of the UV spectralproperties of alarge sample of distant SNe Ia. Although the mean SN Ia spectrumhas notevolved significantly over the past 40 percent of cosmic history,preciseevolutionary constraints are limited by the absence of acomparable sample ofhigh quality local spectra. The mean UV spectrum ofour z 0.5 SNe Ia and itsdispersion is tabulated for use in futureapplications. Within the high-redshiftsample, we discover significant UVspectral variations and exclude dust extinctionas the primary cause byexamining trends with the optical SN color. Although progenitormetallicity may drive some of these trends, the variations we see aremuchlarger than predicted in recent models and do not follow expectedpatterns.An interesting new result is a variation seen in the wavelengthof selected UVfeatures with phase. We also demonstrate systematicdifferences in the SN Iaspectral features with SN lightcurve width inboth the UV and the optical. Weshow that these intrinsic variations couldrepresent a statistical limitation in thefuture use of high-redshift SNeIa for precision cosmology. We conclude thatfurther detailed studies areneeded, both locally and at moderate redshift wherethe rest-frame UV canbe studied precisely, in order that future missions canconfidently beplanned to fully exploit SNe Ia as cosmological probes.

Ellis, R.S.; Sullivan, M.; Nugent, P.E.; Howell, D.A.; Gal-Yam,A.; Astier, P.; Balam, D.; Balland, C.; Basa, S.; Carlberg, R.G.; Conley,A.; Fouchez, D.; Guy, J.; Hardin, D.; Hook, I.; Pain, R.; Perrett, K.; Pritchet, C.J.; Regnault, N.

2007-11-02T23:59:59.000Z

255

A PROPOS DE L'HISTORICITE DES FORETS SACREES DE L'ANCIENNE COTE DES ESCLAVES  

E-Print Network [OSTI]

1 A PROPOS DE L'HISTORICITE DES FORETS SACREES DE L'ANCIENNE COTE DES ESCLAVES Dominique Juhé'autres nuancent cette opinion et signalent que, dans quelques cas, les bois sacrés ne sont pas des formations sources anciennes. Cette région est constituée de plateaux de basse altitude. Ils sont formés au Nord par

Boyer, Edmond

256

CIMAT, VIII Escuela de verano, 30 de julio -10 de ago* Introducci'on a la Geometr'ia de la Mec'ani*  

E-Print Network [OSTI]

conservativo. 18.Sea A(E) el 'area dentro de una curva de fase cerrada que corresponde a nive* *l de energ'ia Introducci'on a la Geometr'ia de la Mec'ani* *ca Cl'asica Problemas 13 - 19

Bor, Gil

257

Nebular spectra and abundance tomography of the type Ia supernova SN 2011fe: a normal SN Ia with a stable Fe core  

E-Print Network [OSTI]

A series of optical and one near-infrared nebular spectra covering the first year of the Type Ia supernova SN 2011fe are presented and modelled. The density profile that proved best for the early optical/ultraviolet spectra, "rho-11fe", was extended to lower velocities to include the regions that emit at nebular epochs. Model rho-11fe is intermediate between the fast deflagration model W7 and a low-energy delayed-detonation. Good fits to the nebular spectra are obtained if the innermost ejecta are dominated by neutron-rich, stable Fe-group species, which contribute to cooling but not to heating. The correct thermal balance can thus be reached for the strongest [FeII] and [FeIII] lines to be reproduced with the observed ratio. The 56Ni mass thus obtained is 0.47 +/- 0.05 Mo. The bulk of 56Ni has an outermost velocity of ~8500 km/s. The mass of stable iron is 0.23 +/- 0.03 Mo. Stable Ni has low abundance, ~10^{-2} Mo. This is sufficient to reproduce an observed emission line near 7400 A. A sub-Chandrasekhar exp...

Mazzali, P A; Filippenko, A V; Garnavich, P M; Clubb, K I; Maguire, K; Pan, Y -C; Shappee, R; Silverman, J M; Benetti, S; Hachinger, S; Nomoto, K; Pian, E

2015-01-01T23:59:59.000Z

258

A Generalized {ital K} Correction for Type Ia Supernovae: Comparing {ital R}-band Photometry Beyond {ital z=9.2} with B,V, and {ital R}-band Nearby Photometry  

E-Print Network [OSTI]

spectroscopically peculiar supernovae, and to search for anyK Correction for Type Ia Supernovae: Comparing R-bandK Correction for Type Ia Supernovae: Comparing R-band

Goodbar, Ariel

2008-01-01T23:59:59.000Z

259

Fachprfungsordnung des Masterstudiengangs Health Care Management  

E-Print Network [OSTI]

Fachprfungsordnung des Masterstudiengangs Health Care Management an der Ernst-Moritz-Arndt-Universitt Greifs- wald die folgende Prfungsordnung fr den Masterstudiengang (M. Sc.) ,,Health Care Management Prfungsverfahren im Studiengang ,,Health Care Management". Ergnzend gilt die Gemeinsame Prfungsord- nung fr

Greifswald, Ernst-Moritz-Arndt-Universitt

260

FACULT DES SCIENCES HUMAINES ET SOCIALES -SORBONNE  

E-Print Network [OSTI]

FACULT? DES SCIENCES HUMAINES ET SOCIALES - SORBONNE MASTERS EN SCIENCES HUMAINES ET SOCIALES ANN?E UNIVERSITAIRE 2013-2014 MENTION SCIENCES DU LANGAGE ­ M1 ET M2 Spécialités > Linguistique et

Pellier, Damien

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Differential Cryptanalysis of DES-like Cryptosystems  

E-Print Network [OSTI]

The Data Encryption Standard (DES) is the best known and most widely used cryptosystem for civilian applications. It was developed at IBM and adopted by the National Buraeu of Standards in the mid 70's, and has successfully withstood all the attacks published so far in the open literature. In this paper we develop a new type of cryptanalytic attack which can break the reduced variant of DES with eight rounds in a few minutes on a PC and can break any reduced variant of DES (with up to 15 rounds) in less than 2 56 operations. The new attack can be applied to a variety of DES-like substitution/permutation cryptosystems, and demonstrates the crucial role of the (unpublished) design rules.

Eli Biham; Adi Shamir

1991-01-01T23:59:59.000Z

262

Liste des Livres 2013 Group theory in physics : an introduction to symmetry  

E-Print Network [OSTI]

, MARTIN P., BIOTOPE EDITIONS, 2011 TU MOURRAS MOINS BETE. TOME 1: LA SCIENCE, C'EST PAS DU CINEMA mechanics with applications to nanotechnology and information science, Band Y.B., Avishai Y., Academic Press'impact on science. Solid state and liquid crystal. Vol 1, Bok J., Prost J., Brochard-Wyart F., World Scientific

Paris-Sud 11, Universit de

263

LATE-TIME SPECTRAL OBSERVATIONS OF THE STRONGLY INTERACTING TYPE Ia SUPERNOVA PTF11kx  

SciTech Connect (OSTI)

PTF11kx was a Type Ia supernova (SN Ia) that showed time-variable absorption features, including saturated Ca II H and K lines that weakened and eventually went into emission. The strength of the emission component of H{alpha} gradually increased, implying that the SN was undergoing significant interaction with its circumstellar medium (CSM). These features, and many others, were blueshifted slightly and showed a P-Cygni profile, likely indicating that the CSM was directly related to, and probably previously ejected by, the progenitor system itself. These and other observations led Dilday et al. to conclude that PTF11kx came from a symbiotic nova progenitor like RS Oph. In this work we extend the spectral coverage of PTF11kx to 124-680 rest-frame days past maximum brightness. The late-time spectra of PTF11kx are dominated by H{alpha} emission (with widths of full width at half-maximum intensity Almost-Equal-To 2000 km s{sup -1}), strong Ca II emission features ({approx}10,000 km s{sup -1} wide), and a blue 'quasi-continuum' due to many overlapping narrow lines of Fe II. Emission from oxygen, He I, and Balmer lines higher than H{alpha} is weak or completely absent at all epochs, leading to large observed H{alpha}/H{beta} intensity ratios. The H{alpha} emission appears to increase in strength with time for {approx}1 yr, but it subsequently decreases significantly along with the Ca II emission. Our latest spectrum also indicates the possibility of newly formed dust in the system as evidenced by a slight decrease in the red wing of H{alpha}. During the same epochs, multiple narrow emission features from the CSM temporally vary in strength. The weakening of the H{alpha} and Ca II emission at late times is possible evidence that the SN ejecta have overtaken the majority of the CSM and agrees with models of other strongly interacting SNe Ia. The varying narrow emission features, on the other hand, may indicate that the CSM is clumpy or consists of multiple thin shells.

Silverman, Jeffrey M. [Department of Astronomy, University of Texas, Austin, TX 78712-0259 (United States); Nugent, Peter E.; Filippenko, Alexei V.; Cenko, S. Bradley [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Gal-Yam, Avishay [Benoziyo Center for Astrophysics, The Weizmann Institute of Science, Rehovot 76100 (Israel); Sullivan, Mark [School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ (United Kingdom); Howell, D. Andrew [Las Cumbres Observatory Global Telescope Network, Goleta, CA 93117 (United States); Pan, Yen-Chen; Hook, Isobel M., E-mail: jsilverman@astro.as.utexas.edu [Department of Physics (Astrophysics), University of Oxford, Keble Road, Oxford OX1 3RH (United Kingdom)

2013-08-01T23:59:59.000Z

264

OzDES multi-fibre spectroscopy for the Dark Energy Survey: first-year operation and results  

E-Print Network [OSTI]

OzDES is a five-year, 100-night, spectroscopic survey on the Anglo-Australian Telescope, whose primary aim is to measure redshifts of approximately 2,500 Type Ia supernovae host galaxies over the redshift range 0.1 < z < 1.2, and derive reverberation-mapped black hole masses for approximately 500 active galactic nuclei and quasars over 0.3 < z < 4.5. This treasure trove of data forms a major part of the spectroscopic follow-up for the Dark Energy Survey for which we are also targeting cluster galaxies, radio galaxies, strong lenses, and unidentified transients, as well as measuring luminous red galaxies and emission line galaxies to help calibrate photometric redshifts. Here we present an overview of the OzDES program and our first-year results. Between Dec 2012 and Dec 2013, we observed over 10,000 objects and measured more than 6,000 redshifts. Our strategy of retargeting faint objects across many observing runs has allowed us to measure redshifts for galaxies as faint as m_r=25 mag. We outline ...

Yuan, Fang; Davis, T M; Childress, M; Abdalla, F B; Banerji, M; Buckley-Geer, E; Rosell, A Carnero; Carollo, D; Castander, F J; D'Andrea, C B; Diehl, H T; Cunha, C E; Foley, R J; Frieman, J; Glazebrook, K; Gschwend, J; Hinton, S; Jouvel, S; Kessler, R; Kim, A G; King, A L; Kuehn, K; Kuhlmann, S; Lewis, G F; Lin, H; Martini, P; McMahon, R G; Mould, J; Nichol, R C; Norris, R P; O'Neill, C R; Ostrovski, F; Papadopoulos, A; Parkinson, D; Reed, S; Romer, A K; Rooney, P J; Rozo, E; Rykoff, E S; Sako, M; Scalzo, R; Schmidt, B P; Scolnic, D; Seymour, N; Sharp, R; Sobreira, F; Sullivan, M; Thomas, R C; Tucker, D; Uddin, S A; Wechsler, R H; Wester, W; Wilcox, H; Zhang, B; Abbott, T; Allam, S; Bauer, A H; Benoit-Levy, A; Bertin, E; Brooks, D; Burke, D L; Kind, M Carrasco; Covarrubias, R; Crocce, M; da Costa, L N; DePoy, D L; Desai, S; Doel, P; Eifler, T F; Evrard, A E; Neto, A Fausti; Flaugher, B; Fosalba, P; Gaztanaga, E; Gerdes, D; Gruen, D; Gruendl, R A; Honscheid, K; James, D; Kuropatkin, N; Lahav, O; Li, T S; Maia, M A G; Makler, M; Marshall, J; Miller, C J; Miquel, R; Ogando, R; Plazas, A A; Roodman, A; Sanchez, E; Scarpine, V; Schubnell, M; Sevilla-Noarbe, I; Smith, R C; Soares-Santos, M; Suchyta, E; Swanson, M E C; Tarle, G; Thaler, J; Walker, A R

2015-01-01T23:59:59.000Z

265

Chapitres Choisis de Theorie des Probabilites  

E-Print Network [OSTI]

;2 #12;Table des mati`eres Table des mati`eres 3 1 Le th´eor`eme limite local 5 1.1 La probl´ematique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 ´Enonc´e du th´eor`eme limite local . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 Preuve du th´eor`eme limite local . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.4 Br

Velenik, Yvan

266

Grosplansurl'anne desMathspourlaTerre  

E-Print Network [OSTI]

on le souhai tera ;c'estlatechniqueCAES(compressed air energy storage). « Pour le stockage à grande leur nombre, pour des raisons géographiques. Suivant la même logique, l'eau peut être remplacée par l'air primerl'air,quipourraêtredétenduulté rieurement dans des turbines afin de restituer l'électricité quand

Dambrine, Marc

267

Utilizing the Updated Gamma-Ray Bursts and Type Ia Supernovae to Constrain the Cardassian Expansion Model and Dark Energy  

E-Print Network [OSTI]

We update gamma-ray burst (GRB) luminosity relations among certain spectral and light-curve features with 139 GRBs. The distance modulus of 82 GRBs at $z>1.4$ can be calibrated with the sample at $z\\leq1.4$ by using the cubic spline interpolation method from the Union2.1 Type Ia supernovae (SNe Ia) set. We investigate the joint constraints on the Cardassian expansion model and dark energy with 580 Union2.1 SNe Ia sample ($z<1.4$) and 82 calibrated GRBs data ($1.4Ia significantly improves the constrain on $\\Omega_{m}-\\Omega_{\\Lambda}$ plane. In the Cardassian expansion model, the best fit is $\\Omega_{m}= 0.24_{-0.15}^{+0.15}$ and $n=0.16_{-0.52}^{+0.30}$ $(1\\sigma)$, which is consistent with the $\\Lambda$CDM cosmology $(n=0)$ in the $1\\sigma$ confidence region. We also discuss two dark energy models in which the equation of state $w(z)$ is parametrized as $w(z)=w_{0}$ and $w(z)=w_{0}+w_{1}z/(1+z)$, respectively. Based on o...

Wei, Jun-Jie; Wu, Xue-Feng

2015-01-01T23:59:59.000Z

268

Experto Universitario Java Enterprise Validacin e internacionalizacin 2012-2013 Depto. Ciencia de la Computacin e IA Spring  

E-Print Network [OSTI]

Experto Universitario Java Enterprise Validación e internacionalización © 2012-2013 Depto. Ciencia #12;Experto Universitario Java Enterprise Validación e internacionalización © 2012-2013 Depto. Ciencia Java Enterprise Validación e internacionalización © 2012-2013 Depto. Ciencia de la Computación e IA

Escolano, Francisco

269

RESULTS OF THE LICK OBSERVATORY SUPERNOVA SEARCH FOLLOW-UP PHOTOMETRY PROGRAM: BVRI LIGHT CURVES OF 165 TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

We present BVRI light curves of 165 Type Ia supernovae (SNe Ia) from the Lick Observatory Supernova Search follow-up photometry program from 1998 through 2008. Our light curves are typically well sampled (cadence of 3-4 days) with an average of 21 photometry epochs. We describe our monitoring campaign and the photometry reduction pipeline that we have developed. Comparing our data set to that of Hicken et al., with which we have 69 overlapping supernovae (SNe), we find that as an ensemble the photometry is consistent, with only small overall systematic differences, although individual SNe may differ by as much as 0.1 mag, and occasionally even more. Such disagreement in specific cases can have significant implications for combining future large data sets. We present an analysis of our light curves which includes template fits of light-curve shape parameters useful for calibrating SNe Ia as distance indicators. Assuming the B - V color of SNe Ia at 35 days past maximum light can be presented as the convolution of an intrinsic Gaussian component and a decaying exponential attributed to host-galaxy reddening, we derive an intrinsic scatter of {sigma} = 0.076 {+-} 0.019 mag, consistent with the Lira-Phillips law. This is the first of two papers, the second of which will present a cosmological analysis of the data presented herein.

Ganeshalingam, Mohan; Li Weidong; Filippenko, Alexei V.; Anderson, Carmen; Foster, Griffin; Griffith, Christopher V.; Joubert, Niels; Leja, Joel; Macomber, Brent; Pritchard, Tyler; Thrasher, Patrick; Winslow, Dustin [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Gates, Elinor L.; Grigsby, Bryant J.; Lowe, Thomas B. [Lick Observatory, P.O. Box 85, Mount Hamilton, CA 95140 (United States)

2010-10-15T23:59:59.000Z

270

CS3600 Lab Manual CyberCIEGE is an information assurance (IA) training tool that illustrates computer and  

E-Print Network [OSTI]

CS3600 Lab Manual Lab SSL CyberCIEGE is an information assurance (IA) training tool. The CyberCIEGE SSL scenario illustrates the use of SSL to authenticate the identity of web servers. This scenario explores the following concepts: SSL is a means of authenticating a server (e.g., a web server

271

ANALYSIS OF LIMIT CYCLE STABILITY IN A TAP-CHANGING TRANSFORMER V. Donde I.A. Hiskens  

E-Print Network [OSTI]

ANALYSIS OF LIMIT CYCLE STABILITY IN A TAP-CHANGING TRANSFORMER V. Donde I.A. Hiskens Department of transformer tap changing and load dynamics. Lin- earization of a Poincar´e map is used to prove local of the region of attraction can then be obtained. 1. INTRODUCTION Interactions between tap-changing transformers

Hiskens, Ian A.

272

Type Ia Supernova Intrinsic Magnitude Dispersion and the Fitting of Cosmological Parameters  

SciTech Connect (OSTI)

I present an analysis for fitting cosmological parameters from a Hubble Diagram of a standard candle with unknown intrinsic magnitude dispersion. The dispersion is determined from the data themselves, simultaneously with the cosmological parameters. This contrasts with the strategies used to date. The advantages of the presented analysis are that it is done in a single fit (it is not iterative), it provides a statistically founded and unbiased estimate of the intrinsic dispersion, and its cosmological-parameter uncertainties account for the intrinsic dispersion uncertainty. Applied to Type Ia supernovae, my strategy provides a statistical measure to test for sub-types and assess the significance of any magnitude corrections applied to the calibrated candle. Parameter bias and differences between likelihood distributions produced by the presented and currently-used fitters are negligibly small for existing and projected supernova data sets.

Kim, Alex G

2010-12-10T23:59:59.000Z

273

A Precision Photometric Comparison between SDSS-II and CSP Type Ia Supernova Data  

E-Print Network [OSTI]

Consistency between Carnegie Supernova Project (CSP) and SDSS-II supernova (SN) survey ugri measurements has been evaluated by comparing SDSS and CSP photometry for nine spectroscopically confirmed Type Ia supernova observed contemporaneously by both programs. The CSP data were transformed into the SDSS photometric system. Sources of systematic uncertainty have been identified, quantified, and shown to be at or below the 0.023 magnitude level in all bands. When all photometry for a given band is combined, we find average magnitude differences of equal to or less than 0.011 magnitudes in ugri, with rms scatter ranging from 0.043 to 0.077 magnitudes. The u band agreement is promising, with the caveat that only four of the nine supernovae are well-observed in u and these four exhibit an 0.038 magnitude supernova-to-supernova scatter in this filter.

Mosher, J; Corlies, L; Folatelli, G; Frieman, J; Holtzman, J; Jha, S W; Kessler, R; Marriner, J; Phillips, M M; Stritzinger, M; Morrell, N; Schneider, D P

2012-01-01T23:59:59.000Z

274

Small-scale Interaction of Turbulence with Thermonuclear Flames in Type Ia Supernovae  

E-Print Network [OSTI]

Microscopic turbulence-flame interactions of thermonuclear fusion flames occuring in Type Ia Supernovae were studied by means of incompressible direct numerical simulations with a highly simplified flame description. The flame is treated as a single diffusive scalar field with a nonlinear source term. It is characterized by its Prandtl number, Pr << 1, and laminar flame speed, S_L. We find that if S_L ~ u', where u' is the rms amplitude of turbulent velocity fluctuations, the local flame propagation speed does not significantly deviate from S_L even in the presence of velocity fluctuations on scales below the laminar flame thickness. This result is interpreted in the context of subgrid-scale modeling of supernova explosions and the mechanism for deflagration-detonation-transitions.

J. C. Niemeyer; W. K. Bushe; G. R. Ruetsch

1999-05-07T23:59:59.000Z

275

Measurements of the Rate of Type Ia Supernovae at Redshift z < ~0.3 from the SDSS-II Supernova Survey  

SciTech Connect (OSTI)

We present a measurement of the volumetric Type Ia supernova (SN Ia) rate based on data from the Sloan Digital Sky Survey II (SDSS-II) Supernova Survey. The adopted sample of supernovae (SNe) includes 516 SNe Ia at redshift z {approx}< 0.3, of which 270 (52%) are spectroscopically identified as SNe Ia. The remaining 246 SNe Ia were identified through their light curves; 113 of these objects have spectroscopic redshifts from spectra of their host galaxy, and 133 have photometric redshifts estimated from the SN light curves. Based on consideration of 87 spectroscopically confirmed non-Ia SNe discovered by the SDSS-II SN Survey, we estimate that 2.04{sub -0.95}{sup +1.61}% of the photometric SNe Ia may be misidentified. The sample of SNe Ia used in this measurement represents an order of magnitude increase in the statistics for SN Ia rate measurements in the redshift range covered by the SDSS-II Supernova Survey. If we assume a SN Ia rate that is constant at low redshift (z < 0.15), then the SN observations can be used to infer a value of the SN rate of r{sub V} = (2.69{sub -0.30-0.01}{sup +0.34+0.21}) x 10{sup -5} SNe yr{sup -1} Mpc{sup -3} (H{sub 0}/(70 km s{sup -1} Mpc{sup -1})){sup 3} at a mean redshift of {approx} 0.12, based on 79 SNe Ia of which 72 are spectroscopically confirmed. However, the large sample of SNe Ia included in this study allows us to place constraints on the redshift dependence of the SN Ia rate based on the SDSS-II Supernova Survey data alone. Fitting a power-law model of the SN rate evolution, r{sub V} (z) = A{sub p} x ((1+z)/(1+z{sub 0})){sup {nu}}, over the redshift range 0.0 < z < 0.3 with z{sub 0} = 0.21, results in A{sub p} = (3.43{sub -0.15}{sup +0.15}) x 10{sup -5} SNe yr{sup -1} Mpc{sup -3} (H{sub 0}/(70 km s{sup -1} Mpc{sup -1})){sup 3} and {nu} = 2.04{sub -0.89}{sup +0.90}.

Dilday, Benjamin; /Rutgers U., Piscataway /Chicago U. /KICP, Chicago; Smith, Mathew; /Cape Town U., Dept. Math. /Portsmouth U.; Bassett, Bruce; /Cape Town U., Dept. Math. /South African Astron. Observ.; Becker, Andrew; /Washington U., Seattle, Astron. Dept.; Bender, Ralf; /Munich, Tech. U. /Munich U. Observ.; Castander, Francisco; /Barcelona, IEEC; Cinabro, David; /Wayne State U.; Filippenko, Alexei V.; /UC, Berkeley; Frieman, Joshua A.; /Chicago U. /Fermilab; Galbany, Lluis; /Barcelona, IFAE; Garnavich, Peter M.; /Notre Dame U. /Stockholm U., OKC /Stockholm U.

2010-01-01T23:59:59.000Z

276

Sensitivity study of explosive nucleosynthesis in Type Ia supernovae: I. Modification of individual thermonuclear reaction rates  

E-Print Network [OSTI]

We explore the sensitivity of the nucleosynthesis due to type Ia supernovae with respect to uncertainties in nuclear reaction rates. We have adopted a standard one-dimensional delayed detonation model of the explosion of a Chandrasekhar-mass white dwarf, and have post-processed the thermodynamic trajectories of every mass-shell with a nucleosynthetic code, with increases (decreases) by a factor of ten on the rates of 1196 nuclear reactions. We have computed as well hydrodynamic models for different rates of the fusion reactions of 12C and of 16O. For selected reactions, we have recomputed the nucleosynthesis with alternative prescriptions for their rates taken from the JINA REACLIB database, and have analyzed the temperature ranges where modifications of their rates have the strongest effect on nucleosynthesis. The nucleosynthesis resulting from the Type Ia supernova models is quite robust with respect to variations of nuclear reaction rates, with the exception of the reaction of fusion of 12C nuclei. The energy of the explosion changes by less than \\sim4%. The changes in the nucleosynthesis due to the modification of the rates of fusion reactions are as well quite modest, for instance no species with a mass fraction larger than 0.02 experiences a variation of its yield larger than a factor of two. We provide the sensitivity of the yields of the most abundant species with respect to the rates of the most intense reactions with protons, neutrons, and alphas. In general, the yields of Fe-group nuclei are more robust than the yields of intermediate-mass elements. Among the charged particle reactions, the most influential on supernova nucleosynthesis are 30Si + p \\rightleftarrows 31P + {\\gamma}, 20Ne + {\\alpha} \\rightleftarrows 24Mg + {\\gamma}, and 24Mg + {\\alpha} \\rightleftarrows 27Al + p. The temperatures at which a modification of their rate has a larger impact are in the range 2 < T < 4 GK. (abridged)

Eduardo Bravo; Gabriel Martnez-Pinedo

2012-04-09T23:59:59.000Z

277

Incompatibility of a comoving Ly-alpha forest with supernova-Ia luminosity distances  

E-Print Network [OSTI]

Recently Perlmutter et al. suggested a positive value of Einstein's cosmological constant Lambda on the basis of luminosity distances from type-Ia supernovae. However, Lambda world models had earlier been proposed by Hoell & Priester and Liebscher et al. on the basis of quasar absorption-line data. Employing more general repulsive fluids ("dark energy") encompassing the Lambda component we quantitatively compare both approaches with each other. Fitting the SN-data by a minimum-component model consisting of dark energy + dust yields a closed universe with a large amount of dust exceeding the baryonic content constrained by big-bang nucleosynthesis. The nature of the dark energy is hardly constrained. Only when enforcing a flat universe there is a clear tendency to a dark-energy Lambda fluid and the `canonical' value Omega_M = 0.3 for dust. Conversely, fitting the quasar-data by a minimum-component model yields a sharply defined, slightly closed model with a low dust density ruling out significant pressureless dark matter. The dark-energy component obtains an equation-of-state P = -0.96 epsilon close to that of a Lambda-fluid. Omega_M = 0.3 or a precisely flat spatial geometry are inconsistent with minimum-component models. It is found that quasar and supernova data sets cannot be reconciled with each other via (repulsive ideal fluid+dust+radiation)-world models. Compatibility could be reached by drastic expansion of the parameter space with at least two exotic fluids added to dust and radiation as world constituents. If considering such solutions as far-fetched one has to conclude that the quasar absorption line and the SN-Ia constraints are incompatible.

Jens Thomas; Hartmut Schulz

2001-03-18T23:59:59.000Z

278

DUST IN A TYPE Ia SUPERNOVA PROGENITOR: SPITZER SPECTROSCOPY OF KEPLER'S SUPERNOVA REMNANT  

SciTech Connect (OSTI)

Characterization of the relatively poorly understood progenitor systems of Type Ia supernovae is of great importance in astrophysics, particularly given the important cosmological role that these supernovae play. Kepler's supernova remnant, the result of a Type Ia supernova, shows evidence for an interaction with a dense circumstellar medium (CSM), suggesting a single-degenerate progenitor system. We present 7.5-38 {mu}m infrared (IR) spectra of the remnant, obtained with the Spitzer Space Telescope, dominated by emission from warm dust. Broad spectral features at 10 and 18 {mu}m, consistent with various silicate particles, are seen throughout. These silicates were likely formed in the stellar outflow from the progenitor system during the asymptotic giant branch stage of evolution, and imply an oxygen-rich chemistry. In addition to silicate dust, a second component, possibly carbonaceous dust, is necessary to account for the short-wavelength Infrared Spectrograph and Infrared Array Camera data. This could imply a mixed chemistry in the atmosphere of the progenitor system. However, non-spherical metallic iron inclusions within silicate grains provide an alternative solution. Models of collisionally heated dust emission from fast shocks (>1000 km s{sup -1}) propagating into the CSM can reproduce the majority of the emission associated with non-radiative filaments, where dust temperatures are {approx}80-100 K, but fail to account for the highest temperatures detected, in excess of 150 K. We find that slower shocks (a few hundred km s{sup -1}) into moderate density material (n{sub 0} {approx} 50-250 cm{sup -3}) are the only viable source of heating for this hottest dust. We confirm the finding of an overall density gradient, with densities in the north being an order of magnitude greater than those in the south.

Williams, Brian J.; Borkowski, Kazimierz J.; Reynolds, Stephen P. [Physics Department, North Carolina State University, Raleigh, NC 27695-8202 (United States); Ghavamian, Parviz [Department of Physics, Astronomy, and Geosciences, Towson University, Towson, MD 21252 (United States); Blair, William P. [Department of Physics and Astronomy, Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218-2686 (United States); Long, Knox S. [STScI, 3700 San Martin Dr., Baltimore, MD 21218 (United States); Sankrit, Ravi, E-mail: brian.j.williams@nasa.gov [SOFIA/USRA, NASA Ames Research Center, M/S N211-3, Moffett Field, CA 94035 (United States)

2012-08-10T23:59:59.000Z

279

INFO-F-309 Administration des Systmes TP1: Installation de Linux et gestion des packages  

E-Print Network [OSTI]

INFO-F-309 Administration des Systmes TP1: Installation de Linux et gestion des packagesBox. Ensuite nous verrons comment fonctionne la gestion de packages, la mise jour du systme et l la gestion de packages. 2 Installation de Linux 2.1 Prparation Surtout lorsqu'il s'agit d'un serveur

Collette. Sbastien

280

Actes du colloque, fvrier 2003, Montpellier, France N Organisation spatiale et gestion des ressources et des  

E-Print Network [OSTI]

Actes du colloque, fvrier 2003, Montpellier, France N Organisation spatiale et gestion des l'origine d'une extrme diversit des scnarios d'volution : Le cas de la zone tampon de la rserve cas de la zone tampon de la rserve de U Minh Thong (delta du Mkong, Vietnam). L'objectif de ce

Boyer, Edmond

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Bilan de la digestion des matires azotes du lait et des bactries cultives sur mthanol  

E-Print Network [OSTI]

Bilan de la digestion des matires azotes du lait et des bactries cultives sur mthanol la fin digestion at the end of the small intestine and the digestive tract of the preruminant calf. Two milk and synthetic amino acids (bacteria diet). Nine Friesian bull calves were used : digestibility was measured

Paris-Sud XI, Universit de

282

Contribution du gros intestin la digestion des glucides et des matires azotes chez le monogastrique omnivore  

E-Print Network [OSTI]

Contribution du gros intestin la digestion des glucides et des matires azotes chez le-en-Josas (France). Summary. Contribution of the large intestine to the digestion of carbohydrates and proteins in omnivorous simple-stomached animals. Owing to its special situation in relation to the rest of the digestive

Paris-Sud XI, Universit de

283

EVOLUTION OF POST-IMPACT REMNANT HELIUM STARS IN TYPE Ia SUPERNOVA REMNANTS WITHIN THE SINGLE-DEGENERATE SCENARIO  

SciTech Connect (OSTI)

The progenitor systems of Type Ia supernovae (SNe Ia) are still under debate. Based on recent hydrodynamics simulations, non-degenerate companions in the single-degenerate scenario (SDS) should survive the supernova (SN) impact. One way to distinguish between the SDS and the double-degenerate scenario is to search for the post-impact remnant stars (PIRSs) in SN Ia remnants. Using a technique that combines multi-dimensional hydrodynamics simulations with one-dimensional stellar evolution simulations, we have examined the post-impact evolution of helium-rich binary companions in the SDS. It is found that these helium-rich PIRSs (He PIRSs) dramatically expand and evolve to a luminous phase (L {approx} 10{sup 4} L{sub Sun }) about 10 yr after an SN explosion. Subsequently, they contract and evolve to become hot blue-subdwarf-like (sdO-like) stars by releasing gravitational energy, persisting as sdO-like stars for several million years before evolving to the helium red-giant phase. We therefore predict that a luminous OB-like star should be detectable within {approx}30 yr after the SN explosion. Thereafter, it will shrink and become an sdO-like star in the central regions of SN Ia remnants within star-forming regions for SN Ia progenitors evolved via the helium-star channel in the SDS. These He PIRSs are predicted to be rapidly rotating (v{sub rot} {approx}> 50 km s{sup -1}) and to have high spatial velocities (v{sub linear} {approx}> 500 km s{sup -1}). Furthermore, if SN remnants have diffused away and are not recognizable at a later stage, He PIRSs could be an additional source of single sdO stars and/or hypervelocity stars.

Pan, Kuo-Chuan; Ricker, Paul M. [Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 West Green Street, Urbana, IL 61801 (United States); Taam, Ronald E., E-mail: kpan2@illinois.edu, E-mail: pmricker@illinois.edu, E-mail: r-taam@northwestern.edu [Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (United States)

2013-08-10T23:59:59.000Z

284

HELIUM-IGNITED VIOLENT MERGERS AS A UNIFIED MODEL FOR NORMAL AND RAPIDLY DECLINING TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

The progenitors of Type Ia supernovae (SNe Ia) are still unknown, despite significant progress during the past several years in theory and observations. Violent mergers of two carbon-oxygen (CO) white dwarfs (WDs) are a candidate scenario suggested to be responsible for at least a significant fraction of normal SNe Ia. Here, we simulate the merger of two CO WDs using a moving-mesh code that allows for the inclusion of thin helium (He) shells (0.01 M{sub Sun }) on top of the WDs at an unprecedented numerical resolution. The accretion of He onto the primary WD leads to the formation of a detonation in its He shell. This detonation propagates around the CO WD and sends a converging shock wave into its core, known to robustly trigger a second detonation, as in the well-known double-detonation scenario for He-accreting CO WDs. However, in contrast to that scenario where a massive He shell is required to form a detonation through thermal instability, here the He detonation is ignited dynamically. Accordingly the required He-shell mass is significantly smaller, and hence its burning products are unlikely to affect the optical display of the explosion. We show that this scenario, which works for CO primary WDs with CO- as well as He-WD companions, has the potential to explain the different brightness distributions, delay times, and relative rates of normal and fast declining SNe Ia. Finally, we discuss extensions to our unified merger model needed to obtain a comprehensive picture of the full observed diversity of SNe Ia.

Pakmor, R.; Springel, V. [Heidelberger Institut fuer Theoretische Studien, Schloss-Wolfsbrunnenweg 35, D-69118 Heidelberg (Germany); Kromer, M. [Kavli Institute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8583 (Japan); Taubenberger, S. [Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching (Germany)

2013-06-10T23:59:59.000Z

285

ISDA 2010, Montpellier 28-30 Juin 2010 1 CONTRIBUTIONS DES PARTENARIATS POUR  

E-Print Network [OSTI]

CONNAISSANCES AGRONOMIQUES SUR LA GESTION DE L'HERBE ET DEVELOPPER DES OUTILS ACTIONNABLES PAR DES CONSEILLERS'quipe Orphe (Outils modles et Rfrences Pour la gestion des systmes HErbagErs) produire des connaissancesISDA 2010, Montpellier 28-30 Juin 2010 1 CONTRIBUTIONS DES PARTENARIATS POUR CONCEVOIR DES

Boyer, Edmond

286

adsorption dans des: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

de Px par exemple ; Py s Paris-Sud XI, Universit de 48 Commande des liaisons HVDC dans un contexte reseau Physics Websites Summary: Commande des liaisons HVDC dans un...

287

CONTRIBUTION A L'TUDE DES COMPORTEMENTS DYSFONCTIONNELS  

E-Print Network [OSTI]

[1] CONTRIBUTION A L'TUDE DES COMPORTEMENTS DYSFONCTIONNELS DES AUDITEURS SENIORS : UNE APPROCHE MANAGRIALE (LE CAS FRANAIS) Ins GADDOUR, doctorante, Universit Paris-Dauphine, ines avoir un impact significatif sur tels comportements. Ensuite, nous tenterons d'identifier d

Paris-Sud XI, Universit de

288

absorption des wasserstoffs: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

. . . . . . . . 41 3.2.2 Kristallines Eis im Volumen Wolf, Martin 5 ABSORPTION PHOTOLECTRIQUE DES RAYONS 03B3 DANS LA COUCHE L DES ATOMES Par Mme NADINE MARTY....

289

Gocarrefour, n 84/4, 2009, pp. 229-239 Gohistoire/go-histoire : quelles mthodes pour quel rcit ?  

E-Print Network [OSTI]

-Marc Antoine*, Bertrand Desailly*, Anne Peltier* Introduction Les sources historiques, du moins dans les pays crue torrentielle, n'est plus dmontrer. Elle rejoint celle des repres de crues sur les faades des

Paris-Sud XI, Universit de

290

LETTRES A LA RDACTION DIFFUSION LASTIQUE DES PHOTONS  

E-Print Network [OSTI]

spectrometrie par scintillation 6choue, 6 cause des empilements de photons diffus6s de basse nergie. FIG. 1

Paris-Sud XI, Universit de

291

UNE BR`EVE HISTOIRE DES NOMBRES PHILIPPE LANGEVIN  

E-Print Network [OSTI]

'eologiques montrent que l'histoire ( occidentale ) des nombres prend source chez les 'egyp* *tiens et les babyloniens

Faccanoni, Gloria

292

Espace Populations Socits, numro spcial les temporalits des populations  

E-Print Network [OSTI]

-3 (2007) 305-316" #12;(Boulin et Mückenberger 2002). Des initiatives politiques, la mise en place de

Paris-Sud XI, Université de

293

EVALUATING SYSTEMATIC DEPENDENCIES OF TYPE Ia SUPERNOVAE: THE INFLUENCE OF PROGENITOR {sup 22}Ne CONTENT ON DYNAMICS  

SciTech Connect (OSTI)

We present a theoretical framework for formal study of systematic effects in supernovae Type Ia (SNe Ia) that utilizes two-dimensional simulations to implement a form of the deflagration-detonation transition (DDT) explosion scenario. The framework is developed from a randomized initial condition that leads to a sample of simulated SNe Ia whose {sup 56}Ni masses have a similar average and range to those observed, and have many other modestly realistic features such as the velocity extent of intermediate-mass elements. The intended purpose is to enable statistically well defined studies of both physical and theoretical parameters of the SNe Ia explosion simulation. We present here a thorough description of the outcome of the SNe Ia explosions produced by our current simulations. A first application of this framework is utilized to study the dependence of the SNe Ia on the {sup 22}Ne content, which is known to be directly influenced by the progenitor stellar population's metallicity. Our study is very specifically tailored to measure how the {sup 22}Ne content influences the competition between the rise of plumes of burned material and the expansion of the star before these plumes reach DDT conditions. This influence arises from the dependence of the energy release, progenitor structure, and laminar flame speed on {sup 22}Ne content. For this study, we explore these three effects for a fixed carbon content and DDT density. By setting the density at which nucleosynthesis takes place during the detonation phase of the explosion, the competition between plume rise and stellar expansion controls the amount of material in nuclear statistical equilibrium (NSE) and therefore {sup 56}Ni produced. Of particular interest is how this influence of {sup 22}Ne content compares to the direct modification of the {sup 56}Ni mass via the inherent neutron excess as discussed by Timmes et al. Although the outcome following from any particular ignition condition can change dramatically with {sup 22}Ne content, with a sample of 20 ignition conditions we find that the systematic change in the expansion of the star prior to detonation is not large enough to compete with the dependence discussed by Timmes et al. In fact, our results show no statistically significant dependence of the predetonation expansion on {sup 22}Ne content, pointing to the morphology of the ignition condition as being the dominant dynamical driver of the {sup 56}Ni yield of the explosion. However, variations in the DDT density, which were specifically excluded here, are also expected to be important and to depend systematically on {sup 22}Ne content.

Townsley, Dean M. [Department of Astronomy/Steward Observatory, University of Arizona, Tucson, AZ (United States); Jackson, Aaron P.; Calder, Alan C. [Department of Physics and Astronomy, State University of New York - Stony Brook, Stony Brook, NY (United States); Chamulak, David A.; Brown, Edward F. [Department of Physics and Astronomy, Michigan State University, East Lansing, MI (United States); Timmes, F. X. [Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824 (United States)], E-mail: townsley@as.arizona.edu

2009-08-20T23:59:59.000Z

294

Digestion des glucides chez le monogastrique Martine CHAMP  

E-Print Network [OSTI]

Digestion des glucides chez le monogastrique Martine CHAMP Laboratoire de Techno%gie des Aliments des Animaux, /. N. R.A., Rue de la Graudire, 44072 Nantes Cedex. Summary. Carbohydrate digestion digested in the small intestine of monogastric animals by enzymes of the salivary glands, pancreas

Paris-Sud XI, Universit de

295

PLC IMPLEMENTATION OF A DES SUPERVISOR FOR A MANUFACTURING  

E-Print Network [OSTI]

PLC IMPLEMENTATION OF A DES SUPERVISOR FOR A MANUFACTURING TESTBED: AN IMPLEMENTATION PERSPECTIVE Copyright by Ryan James Leduc 1996 #12;Title: PLC Implementation of A DES Supervisor for a Manufacturing, and issues involved in implementing DES supervisors on programmable logic controllers (PLC). A PLC based

Leduc, Ryan

296

soleil, parce que les pinceaux lumineux qui forment les images sont moins dlis et les foyers moins prcis.  

E-Print Network [OSTI]

AU PHNOMNE DE PELTIER; PAR M. BOUTY. 1. On sait que, quand on dcompose par la pile un sel dissous les phnomnes observs soit l'action chimique principale, soit une cause analogue celle qui part la pro- duction du courant que celle-l seule se distrib

Boyer, Edmond

297

Modlisation des meta-donnes bibliographiques : une contribution ins-trumente destine amliorer la circulation des usagers dans les  

E-Print Network [OSTI]

Modlisation des meta-donnes bibliographiques : une contribution ins- trumente destine .fr fabrice.papy@univ-paris8.fr Rsum La gestion des connaissances au sein des biblio- thques sociologue Francis Pav [Pav 89] a montr partir de cas concrets que ces prsupposs relevaient d'un forme

Boyer, Edmond

298

Phenomene couple thermo-hydro-mecanique des roches fracturees: Recents developpements des methodes de modelisation et tests de validation  

E-Print Network [OSTI]

95-54 Phenomene couple thermo-hydro-mecanique des roches fracturees: Recents developpements des methodes de modelisation et tests de validation Coupled thermo-hydro-mechanical phenomena in fractured fracture.La deuxiemequestion concemela modelisation des phenomenes couples thenno-hydro-mecaniques. L

Paris-Sud XI, Université de

299

CP Tech Center I Iowa State University I 2711 S. Loop Dr. Suite 4700,Ames, IA 50010-8664 I 515-294-5798 FOR MORE INFORMATION  

E-Print Network [OSTI]

CP Tech Center I Iowa State University I 2711 S. Loop Dr. Suite 4700,Ames, IA 50010-8664 I 515 calcium sulfate in the form of hemihydrate (plaster) in the cement (false set) or the uncontrolled early

300

Is the central binary system of the planetary nebula Henize 2-428 a Type Ia supernova progenitor?  

E-Print Network [OSTI]

We account for recent observations of the binary system at the center of the bipolar planetary nebula Henize 2-428 by the presence of one degenerate core with a low-mass main sequence companion, rather than by two degenerate objects. We argue that the variability of the He II 5412A spectral line can be accounted for by a time-varying broad absorption line from the central star on top of which there is a time-varying narrow emission line from the compact nebula. The two (almost) symmetric broad minima in the light curve are attributed to tidal distortion caused by a companion. We find problems in the recently proposed and competing explanation of two equal-mass degenerate objects that supposedly will eventually merge, possibly leading to a SN Ia. We conclude that Henize 2-428 cannot be claimed yet to support the double-degenerate scenario for Type Ia supernovae.

Garcia-Berro, Enrique; Althaus, Leandro G

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Amtsblatt des Thringer Kultusministeriums und des Thringer Ministeriums fr Wissenschaft, Forschung und Kunst N r. 9/2002 Friedrich-Schiller-Universitt Jena  

E-Print Network [OSTI]

tritt am ersten Tage des auf ihre Veröffentlichung im Gemeinsamen Amtsblatt des Thüringer, Festkörperphysik, Kern- und Elementarteilchenphysik) an." 3. Diese ?nderung tritt am ersten Tage des auf ihre

Knüpfer, Christian

302

THE IMPACT OF TYPE Ia SUPERNOVA EXPLOSIONS ON HELIUM COMPANIONS IN THE CHANDRASEKHAR-MASS EXPLOSION SCENARIO  

SciTech Connect (OSTI)

In the version of the single-degenerate scenario of Type Ia supernovae (SNe Ia) studied here, a carbon-oxygen white dwarf explodes close to the Chandrasekhar limit after accreting material from a non-degenerate helium (He) companion star. In the present study, we employ the STELLAR GADGET code to perform three-dimensional hydrodynamical simulations of the interaction of the SN Ia ejecta with the He companion star taking into account its orbital motion and spin. It is found that only 2%-5% of the initial companion mass is stripped off from the outer layers of He companion stars due to the supernova (SN) impact. The dependence of the unbound mass (or the kick velocity) on the orbital separation can be fitted to a good approximation by a power law for a given companion model. After the SN impact, the outer layers of a He donor star are significantly enriched with heavy elements from the low-expansion-velocity tail of SN Ia ejecta. The total mass of accumulated SN-ejecta material on the companion surface reaches about {approx}> 10{sup -3} M{sub Sun} for different companion models. This enrichment with heavy elements provides a potential way to observationally identify the surviving companion star in SN remnants. Finally, by artificially adjusting the explosion energy of the W7 explosion model, we find that the total accumulation of SN ejecta on the companion surface is also dependent on the explosion energy with a power-law relation to a good approximation.

Liu Zhengwei; Wang, B.; Han, Z. W. [Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011 (China); Pakmor, R. [Heidelberger Institut fuer Theoretische Studien, Schloss-Wolfsbrunnenweg 35, D-69118 Heidelberg (Germany); Seitenzahl, I. R.; Hillebrandt, W.; Kromer, M.; Edelmann, P.; Taubenberger, S. [Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Str. 1, D-85741 Garching (Germany); Roepke, F. K. [Institut fuer Theoretische Physik und Astrophysik, Universitaet Wuerzburg, Am Hubland, D-97074 Wuerzburg (Germany); Maeda, K., E-mail: zwliu@ynao.ac.cn [Kavli Institute for the Physics and Mathematics of the Universe (Kavli-IPMU), Todai Institutes for Advanced Study (TODIAS), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan)

2013-09-01T23:59:59.000Z

303

SPECTROSCOPIC OBSERVATIONS OF SN 2012fr: A LUMINOUS, NORMAL TYPE Ia SUPERNOVA WITH EARLY HIGH-VELOCITY FEATURES AND A LATE VELOCITY PLATEAU  

SciTech Connect (OSTI)

We present 65 optical spectra of the Type Ia SN 2012fr, 33 of which were obtained before maximum light. At early times, SN 2012fr shows clear evidence of a high-velocity feature (HVF) in the Si II {lambda}6355 line that can be cleanly decoupled from the lower velocity ''photospheric'' component. This Si II {lambda}6355 HVF fades by phase -5; subsequently, the photospheric component exhibits a very narrow velocity width and remains at a nearly constant velocity of {approx}12,000 km s{sup -1} until at least five weeks after maximum brightness. The Ca II infrared triplet exhibits similar evidence for both a photospheric component at v Almost-Equal-To 12,000 km s{sup -1} with narrow line width and long velocity plateau, as well as an HVF beginning at v Almost-Equal-To 31,000 km s{sup -1} two weeks before maximum. SN 2012fr resides on the border between the ''shallow silicon'' and ''core-normal'' subclasses in the Branch et al. classification scheme, and on the border between normal and high-velocity Type Ia supernovae (SNe Ia) in the Wang et al. system. Though it is a clear member of the ''low velocity gradient'' group of SNe Ia and exhibits a very slow light-curve decline, it shows key dissimilarities with the overluminous SN 1991T or SN 1999aa subclasses of SNe Ia. SN 2012fr represents a well-observed SN Ia at the luminous end of the normal SN Ia distribution and a key transitional event between nominal spectroscopic subclasses of SNe Ia.

Childress, M. J.; Scalzo, R. A.; Sim, S. A.; Tucker, B. E.; Yuan, F.; Schmidt, B. P. [Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611 (Australia); Cenko, S. B.; Filippenko, A. V. [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Silverman, J. M. [Department of Astronomy, University of Texas, Austin, TX 78712-0259 (United States); Contreras, C.; Hsiao, E. Y.; Phillips, M.; Morrell, N. [Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena (Chile); Jha, S. W.; McCully, C. [Department of Physics and Astronomy, Rutgers, State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Anderson, J. P.; De Jaeger, T.; Forster, F. [Departamento de Astronomia, Universidad de Chile, Casilla 36-D, Santiago (Chile); Benetti, S. [INAF Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova (Italy); Bufano, F., E-mail: mjc@mso.anu.edu.au [Departamento de Ciencias Fisicas, Universidad Andres Bello, Avda. Republica 252, Santiago (Chile); and others

2013-06-10T23:59:59.000Z

304

The Joint Efficient Dark-energy Investigation (JEDI): Measuring the cosmic expansion history from type Ia supernovae  

E-Print Network [OSTI]

JEDI (Joint Efficient Dark-energy Investigation) is a candidate implementation of the NASA-DOE Joint Dark Energy Mission (JDEM). JEDI will probe dark energy in three independent methods: (1) type Ia supernovae, (2) baryon acoustic oscillations, and (3) weak gravitational lensing. In an accompanying paper, an overall summary of the JEDI mission is given. In this paper, we present further details of the supernova component of JEDI. To derive model-independent constraints on dark energy, it is important to precisely measure the cosmic expansion history, H(z), in continuous redshift bins from z \\~ 0-2 (the redshift range in which dark energy is important). SNe Ia at z > 1 are not readily accessible from the ground because the bulk of their light has shifted into the near-infrared where the sky background is overwhelming; hence a space mission is required to probe dark energy using SNe. Because of its unique near-infrared wavelength coverage (0.8-4.2 microns), JEDI has the advantage of observing SNe Ia in the rest frame J band for the entire redshift range of 0 energy are discussed, with special emphasis on the improved precision afforded by the rest frame near-infrared data.

M. M. Phillips; Peter Garnavich; Yun Wang; David Branch; Edward Baron; Arlin Crotts; J. Craig Wheeler; Edward Cheng; Mario Hamuy; for the JEDI Team

2006-06-28T23:59:59.000Z

305

Chameleon-like cosmology in light of SNeIa, CMB, BAO and OHD observational data sets  

E-Print Network [OSTI]

During this work an interacting chameleon-like scalar field scenario, by considering SNeIa, CMB, BAO and OHD data sets is investigated. Some cosmological parameters includes of Hubble, deceleration and coincidence parameters in such mechanism are analysed. It is realized for estimation the free parameters of a theoretical model, it is better all mentioned observational data sets be considered. In fact if one considers SNeIa, CMB and BAO but ignores OHD it maybe leads to an incorrect result. Also it will find out, when we margin the free parameters, the $\\chi _{\\rm{T}}^2$ function should be re-weighted, this fact arises from the abundance of SNeIa and OHD sources in comparison to CMB and BAO data sets. We margin the likelihood $\\mathcal{L} (\\Omega_{\\rm{m0}} ,\\omega_1 , \\beta)$ with respect to $\\omega_1$, $\\beta$ and $\\Omega_{\\rm{m0}}$ respectively and by means of two dimensional confidence levels $68.3\\%$, $90\\%$ and $95.4\\%$, the relative probability functions are plotted. Also the quantities which maximize t...

Rabiei, Sayed Wrya; Saaidi, Khaled; Aghamohammadi, Ali

2015-01-01T23:59:59.000Z

306

Explosion Models for Type Ia Supernovae: A Comparison with Observed Light Curves, distances, H_o and q_o  

E-Print Network [OSTI]

Theoretical monochromatic light curves and photospheric expansion velocities are compared with observations of 27 Type Ia supernovae (SNe Ia). A set of 37 models has been considered which encompasses all currently discussed explosion scenarios for Type Ia supernovae including deflagrations, detonations, delayed detonations, pulsating delayed detonations and tamped detonations of Chandra- mass, and Helium detonations of low mass white dwarfs. The explosions are calculated using one-dimensional Lagrangian hydro and radiation-hydro codes with incorporated nuclear networks. Subsequently, light curves are constructed using our LC scheme which includes an implicit radiation transport, expansion opacities, a Monte-Carlo $\\gamma $-ray transport, and molecular and dust formation. For some supernovae, results of detailed non-LTE calculations have been considered. Observational properties of our series of models are discussed, the relation between the absolute brightness, post-maximum decline rates, the colors at several moments of time, etc. All models with a Ni production larger than 0.4 solar masses produce light curves of similar brightness. The influence of the cosmological red shift on the light curves and on the correction for interstellar reddening is discussed. Based on data rectification of the standard deviation, a quantitative procedure to fit the observations has been used to the determine the free parameters, i.e. the correct model, the distance, the reddening, and the time of the explosion. The results are discussed in detail and applied to determine Ho and qo.

P. Hoeflich; A. Khokkhlov

1996-02-06T23:59:59.000Z

307

Direct numerical simulations of type Ia supernovae flames I: The landau-darrieus instability  

SciTech Connect (OSTI)

Planar flames are intrinsically unstable in open domains due to the thermal expansion across the burning front--the Landau-Darrieus instability. This instability leads to wrinkling and growth of the flame surface, and corresponding acceleration of the flame, until it is stabilized by cusp formation. We look at the Landau-Darrieus in stability for C/O thermonuclear flames at conditions relevant to the late stages of a Type Ia supernova explosion. Two-dimensional direct numerical simulations of both single-mode and multi-mode perturbations using a low Mach number hydrodynamics code are presented. We show the effect of the instability on the flame speed as a function of both the density and domain size, demonstrate the existence of the small scale cutoff to the growth of the instability, and look for the proposed breakdown of the non-linear stabilization at low densities. The effects of curvature on the flame as quantified through measurements of the growth rate and computation of the corresponding Markstein number. While accelerations of a few percent are observed, they are too small to have any direct outcome on the supernova explosion.

Bell, J.B.; Day, M.S.; Rendleman, C.A.; Woosley, S.E.; Zingale, M.

2003-11-24T23:59:59.000Z

308

Comparison of the Legacy and Gold SnIa Dataset Constraints on Dark Energy Models  

E-Print Network [OSTI]

We have performed a comparative analysis of three recent and reliable SnIa datasets available in the literature: the Full Gold (FG) dataset (157 data points $0dataset (140 data points $0dataset (115 data points $0datasets are consistent with each other at the 95% confidence level, the latest (SNLS) dataset shows distinct trends which are not shared by the Gold datasets. We find that the best fit dynamical $w(z)$ obtained from the SNLS dataset does not cross the PDL $w=-1$ and remains above and close to the $w=-1$ line for the whole redshift range $0datasets (FG and TG) clearly crosses the PDL and departs significantly from the PDL $w=-1$ line while the LCDM parameter values are about $2\\sigma$ away from the best fit $w(z)$. In addition, the $(\\Omega_{0m},\\Omega_\\Lambda)$ parameters in a LCDM parametrization without a flat prior, fit by the SNLS dataset, favor the minimal flat LCDM concordance model. The corresponding fit with the Gold datasets mildly favors a closed universe and the flat LCDM parameter values are $1\\sigma - 2\\sigma$ away from the best fit $(\\Omega_{0m},\\Omega_\\Lambda)$.

S. Nesseris; L. Perivolaropoulos

2005-12-02T23:59:59.000Z

309

Phenomenology for Supernova Ia Data Based on a New Cosmic Time  

E-Print Network [OSTI]

A new phenomenological theory for the expansion of our universe is presented. Because fundamental supporting theory is still in development, its discussion is not presented in this paper. The theory is based on a new algebraic expression for cosmic time G Rho t^2=3/32Pi, which correctly predicts the WMAP measured cosmological constants and the fundamental Hubble parameter H(t) for the expansion of the universe. A replacement for dark matter, called here "dark mass", is proposed which scales as with the expansion and incorporated. It does not react with ordinary matter, except gravitationally, and produces flat rotational curves for spiral galaxies. Also a new expression for the approaching velocity of radiation in a closed 3-sphere expanding universe is given that accounts for the early degrading negative approach of radiation for z > 1.7. The expression is v = Hr-c. Combining these three elements produces a luminosity distance dL that successfully predicts the apparent magnitude of exploding supernova Ia stars and even the new gamma ray bursts with no need for dark energy or acceleration of the expansion of the universe.

Charles B. Leffert

2007-07-26T23:59:59.000Z

310

Magnitude-Redshift Relation for SNe Ia, Time Dilation, and Plasma Redshift  

E-Print Network [OSTI]

We have previously shown that the type Ia supernovae data by Riess et al. match the prediction of the magnitude-redshift relation in the plasma-redshift cosmology. In this article, we also show that the recent SNLS data, which have a slightly narrower distribution as reported by Astier et al. in 2005, match the predictions of the plasma-redshift cosmology. The standard deviation of the SNLS-magnitude from the predicted curve is only about 0.14. The data indicate that there is no cosmic time dilation. The big-bang cosmology therefore appears false. The plasma redshift, which follows from exact evaluation of photons interaction with hot sparse electron plasma, leads to a quasi-static, infinite, and everlasting universe. It does not need big bang, dark energy, or dark matter for describing the observations. It predicts intrinsic redshifts of galaxies consistent with what is observed. The Hubble constant that best fits the SNLS data is about 63 km per sec per Mpc. This corresponds to an average electron density of about 0.0002 per cubic centimeter in intergalactic space. This density together with the plasma redshift heating to an average plasma temperature in intergalactic space of about 3 million K explains the observed isotropic cosmic microwave background (CMB) and the cosmic X-ray background.

Ari Brynjolfsson

2006-02-22T23:59:59.000Z

311

A Test of Tully-Fisher Distance Estimates Using Cepheids and Type Ia Supernovae  

E-Print Network [OSTI]

We update and extend the results of Shanks (1997, MNRAS, 290, L77) by making a direct test of Tully-Fisher distance estimates to thirteen spiral galaxies with HST Cepheid distances and to ten spiral galaxies with Type Ia supernova (SNIa) distances. The results show that the Tully-Fisher distance moduli are too short with respect to the Cepheid distances by 0.46+-0.11mag and too short with respect to the SNIa distances by 0.49+-0.18mag. Combining the HST Cepheid and the best SNIa data suggests that, overall, previous Tully-Fisher distances at v~1000 kms-1 were too short by 0.43+-0.09mag, a result which is significant at the 4.6 sigma level. These data therefore indicate that previous Tully-Fisher distances should be revised upwards by 22+-5% implying, for example, a Virgo distance of 19.0+-1.8Mpc. The value of Ho from Tully-Fisher estimates is correspondingly revised downwards from Ho=84+-10kms-1Mpc-1 to Ho=69+-8kms-1Mpc-1. There is evidence that the Tully-Fisher relation at large distances is affected by Malmquist bias. In this case, we argue that Ho<50kms-1Mpc-1 cannot be ruled out by Tully-Fisher considerations.

T. Shanks

1999-01-24T23:59:59.000Z

312

FIRST EVIDENCE OF GLOBULAR CLUSTER FORMATION FROM THE EJECTA OF PROMPT TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

Recent spectroscopic observations of globular clusters (GCs) in the Large Magellanic Cloud (LMC) have discovered that one of the intermediate-age GCs, NGC 1718, with [Fe/H] = -0.7 has an extremely low [Mg/Fe] ratio of {approx}-0.9. We propose that NGC 1718 was formed from the ejecta of Type Ia supernovae mixed with very metal-poor ([Fe/H] <-1.3) gas about {approx}2 Gyr ago. The proposed scenario is shown to be consistent with the observed abundances of Fe-group elements such as Cr, Mn, and Ni. In addition, compelling evidence for asymptotic giant branch stars playing a role in chemical enrichment during this GC formation is found. We suggest that the origin of the metal-poor gas is closely associated with efficient gas transfer from the outer gas disk of the Small Magellanic Cloud to the LMC disk. We anticipate that the outer part of the LMC disk contains field stars exhibiting significantly low [Mg/Fe] ratios, formed through the same process as NGC 1718.

Tsujimoto, Takuji [National Astronomical Observatory of Japan, Mitaka-shi, Tokyo 181-8588 (Japan); Bekki, Kenji, E-mail: taku.tsujimoto@nao.ac.jp [ICRAR, M468, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 (Australia)

2012-06-01T23:59:59.000Z

313

Centrales au gaz et Energies renouvelables: comparer des pommes avec des pommes  

E-Print Network [OSTI]

tes dans les Annual Energy Outlook contrat en contrat etde 10 dans son Annual Energy Outlook de % par rapport aules prix son Annual Energy Outlook de 2003. terme pour des

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

314

Plan d'action rgional pour la conservation des chimpanzs et des gorilles en Afrique Centrale Plan d'action rgional pour la conservation des chimpanzs  

E-Print Network [OSTI]

les lacunes en connaissances qu'il faut combler, à travers l'amélioration des méthodes de recensement par les chercheurs suggérant qu'ils avaient eu peu de contacts avec des humains auparavant. ©Nick gorilles de plaine d'Afrique Centrale. ©NickNichols,NGS #12;Plan d'action régional pour la conservation des

315

The Rise and Fall of Type Ia Supernova Light Curves in the SDSS-II Supernova Survey  

SciTech Connect (OSTI)

We analyze the rise and fall times of Type Ia supernova (SN Ia) light curves discovered by the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey. From a set of 391 light curves k-corrected to the rest-frame B and V bands, we find a smaller dispersion in the rising portion of the light curve compared to the decline. This is in qualitative agreement with computer models which predict that variations in radioactive nickel yield have less impact on the rise than on the spread of the decline rates. The differences we find in the rise and fall properties suggest that a single 'stretch' correction to the light curve phase does not properly model the range of SN Ia light curve shapes. We select a subset of 105 light curves well observed in both rise and fall portions of the light curves and develop a '2-stretch' fit algorithm which estimates the rise and fall times independently. We find the average time from explosion to B-band peak brightness is 17.38 {+-} 0.17 days, but with a spread of rise times which range from 13 days to 23 days. Our average rise time is shorter than the 19.5 days found in previous studies; this reflects both the different light curve template used and the application of the 2-stretch algorithm. The SDSS-II supernova set and the local SNe Ia with well-observed early light curves show no significant differences in their average rise-time properties. We find that slow-declining events tend to have fast rise times, but that the distribution of rise minus fall time is broad and single peaked. This distribution is in contrast to the bimodality in this parameter that was first suggested by Strovink (2007) from an analysis of a small set of local SNe Ia. We divide the SDSS-II sample in half based on the rise minus fall value, t{sub r} - t{sub f} {approx}< 2 days and t{sub r} - t{sub f} > 2 days, to search for differences in their host galaxy properties and Hubble residuals; we find no difference in host galaxy properties or Hubble residuals in our sample.

Hayden, Brian T.; /Notre Dame U.; Garnavich, Peter M.; /Notre Dame U.; Kessler, Richard; /KICP, Chicago /Chicago U., EFI; Frieman, Joshua A.; /KICP, Chicago /Chicago U. /Fermilab; Jha, Saurabh W.; /Stanford U., Phys. Dept. /Rutgers U., Piscataway; Bassett, Bruce; /Cape Town U., Dept. Math. /South African Astron. Observ.; Cinabro, David; /Wayne State U.; Dilday, Benjamin; /Rutgers U., Piscataway; Kasen, Daniel; /UC, Santa Cruz; Marriner, John; /Fermilab; Nichol, Robert C.; /Portsmouth U., ICG /Baltimore, Space Telescope Sci. /Johns Hopkins U.

2010-01-01T23:59:59.000Z

316

Studienordnung des Masterstudiengangs ,,Health Care Management"  

E-Print Network [OSTI]

1 Studienordnung des Masterstudiengangs ,,Health Care Management" an der Ernst-Moritz-Arndt-Universitt Greifswald die folgende Studienordnung fr den Masterstudiengang ,,Health Care Management" als Satzung Master- studiengang (M.Sc.) ,,Health Care Management" an der Ernst-Moritz-Arndt-Universitt Greifswald

Greifswald, Ernst-Moritz-Arndt-Universitt

317

Studienordnung des Masterstudiengangs ,,Health Care Management"  

E-Print Network [OSTI]

Studienordnung des Masterstudiengangs ,,Health Care Management" an der Ernst-Moritz-Arndt-Universitt Greifswald die fol- gende Studienordnung fr den Masterstudiengang ,,Health Care Manage- ment" als Satzung Masterstudiengang (M.Sc.) ,,Health Care Management" an der Ernst-Moritz- Arndt-Universitt Greifswald vom 15. Mrz

Greifswald, Ernst-Moritz-Arndt-Universitt

318

Service des finances Le saviez-vous ?  

E-Print Network [OSTI]

. La certification ISO 9001 atteste qu'une organisation a développé des pratiques de gestion qui responsable Penser autrement, acheter mieux ! L' Organisation internationale de normalisation (ISO) a publié durable dans une organisation : ISO 26 000 Responsabilité sociétale. Une organisation engagée envers le

319

Direction des bibliothques Bibliothque de chimie  

E-Print Network [OSTI]

lien suivant : https://origin-scifinder.cas.org/registration #12;6 N.B : II est obligatoire de s.ca. #12;7 Pour débuter: Cliquer sur le lien suivant et suivre les étapes : https « Search ». #12;10 La zone, ci-dessous contient des champs pour limiter ou affiner votre recherche. Les

Leclercq, Remi

320

INRA Laboratoire Croissance et Mtabolisme des Herbivores  

E-Print Network [OSTI]

'origine du mouvement, capable de transformer ' l'énergie des nutriments en force motrice. Enfin, c'est le sque- lette, et constituent le relais de la force motrice développée par le muscle. Ces différents

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

INSTABILITS DYNAMIQUES ET HYSTRSIS DES TRANSITIONS RSISTIVES  

E-Print Network [OSTI]

TYPE II A L'TAT MIXTE (*) F. P. PELTIER et J. BAIXERAS Laboratoire de Gnie Electrique des Universits monte du courant. (*) Ce travail fait partie de la Thse de Troisime Cycle soutenue par F. P. Peltier #12;68 toujours infrieure celle correspondant l'tat normal de l'chantillon et dans ce dernier

Paris-Sud XI, Universit de

322

Revue internationale des technologies en pdagogie universitaire  

E-Print Network [OSTI]

complexes ds que l'on s'affranchit de l'hypothse trs limitative des gaz parfaits. Il en rsulte que les simplement une turbine, un compresseur,une pompe,un changeur de chaleur,etc.,sans crire une seule quation

Paris-Sud XI, Universit de

323

Division de la gestion de documents et des archives Marie-Victorin au Qubec  

E-Print Network [OSTI]

Communiqu Division de la gestion de documents et des archives Marie-Victorin au Qubec Le 10 septembre 2011 -- La Division de la gestion de documents et des archives et la Direction des bibliothques s y verrez des paysages de la Gaspsie ou des photographies d'autochtones de la Cte-Nord ou de

Montral, Universit de

324

THE HUBBLE SPACE TELESCOPE CLUSTER SUPERNOVA SURVEY. III. CORRELATED PROPERTIES OF TYPE Ia SUPERNOVAE AND THEIR HOSTS AT 0.9 < z < 1.46  

SciTech Connect (OSTI)

Using the sample of Type Ia supernovae (SNe Ia) discovered by the Hubble Space Telescope (HST) Cluster Supernova Survey and augmented with HST-observed SNe Ia in the Great Observatories Origins Deep Survey (GOODS) fields, we search for correlations between the properties of SNe and their host galaxies at high redshift. We use galaxy color and quantitative morphology to determine the red sequence in 25 clusters and develop a model to distinguish passively evolving early-type galaxies from star-forming galaxies in both clusters and the field. With this approach, we identify 6 SN Ia hosts that are early-type cluster members and 11 SN Ia hosts that are early-type field galaxies. We confirm for the first time at z > 0.9 that SNe Ia hosted by early-type galaxies brighten and fade more quickly than SNe Ia hosted by late-type galaxies. We also show that the two samples of hosts produce SNe Ia with similar color distributions. The relatively simple spectral energy distributions expected for passive galaxies enable us to measure stellar masses of early-type SN hosts. In combination with stellar mass estimates of late-type GOODS SN hosts from Thomson and Chary, we investigate the correlation of host mass with Hubble residual observed at lower redshifts. Although the sample is small and the uncertainties are large, a hint of this relation is found at z > 0.9. By simultaneously fitting the average cluster galaxy formation history and dust content to the red-sequence scatters, we show that the reddening of early-type cluster SN hosts is likely E(B - V) {approx}< 0.06. The similarity of the field and cluster early-type host samples suggests that field early-type galaxies that lie on the red sequence may also be minimally affected by dust. Hence, the early-type-hosted SNe Ia studied here occupy a more favorable environment to use as well-characterized high-redshift standard candles than other SNe Ia.

Meyers, J.; Barbary, K.; Fakhouri, H. K.; Goldhaber, G. [Department of Physics, University of California Berkeley, Berkeley, CA 94720 (United States); Aldering, G.; Faccioli, L.; Hsiao, E. [E.O. Lawrence Berkeley National Lab, 1 Cyclotron Rd., Berkeley, CA 94720 (United States); Barrientos, L. F. [Departmento de Astronomia, Pontificia Universidad Catolica de Chile, Santiago (Chile); Brodwin, M. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Dawson, K. S. [Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112 (United States); Deustua, S.; Fruchter, A. S. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Doi, M.; Ihara, Y. [Institute of Astronomy, Graduate School of Science, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 (Japan); Eisenhardt, P. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Gilbank, D. G. [Department of Physics and Astronomy, University Of Waterloo, Waterloo, Ontario, N2L 3G1 (Canada); Gladders, M. D. [Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637 (United States); Gonzalez, A. H. [Department of Astronomy, University of Florida, Gainesville, FL 32611 (United States); Hattori, T. [Subaru Telescope, National Astronomical Observatory of Japan, 650 North Aohaku Place, Hilo, HI 96720 (United States); Kashikawa, N., E-mail: jmeyers314@berkeley.edu [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Collaboration: Supernova Cosmology Project; and others

2012-05-01T23:59:59.000Z

325

Evaluating systematic dependencies of type Ia supernovae : the influence of deflagration to detonation density.  

SciTech Connect (OSTI)

We explore the effects of the deflagration to detonation transition (DDT) density on the production of {sup 56}Ni in thermonuclear supernova (SN) explosions (Type Ia supernovae). Within the DDT paradigm, the transition density sets the amount of expansion during the deflagration phase of the explosion and therefore the amount of nuclear statistical equilibrium (NSE) material produced. We employ a theoretical framework for a well-controlled statistical study of two-dimensional simulations of thermonuclear SNe with randomized initial conditions that can, with a particular choice of transition density, produce a similar average and range of {sup 56}Ni masses to those inferred from observations. Within this framework, we utilize a more realistic 'simmered' white dwarf progenitor model with a flame model and energetics scheme to calculate the amount of {sup 56}Ni and NSE material synthesized for a suite of simulated explosions in which the transition density is varied in the range (1-3) x 10{sup 7} g cm{sup -3}. We find a quadratic dependence of the NSE yield on the log of the transition density, which is determined by the competition between plume rise and stellar expansion. By considering the effect of metallicity on the transition density, we find the NSE yield decreases by 0.055 {+-} 0.004 M {circle_dot} for a 1 Z {circle_dot} increase in metallicity evaluated about solar metallicity. For the same change in metallicity, this result translates to a 0.067 {+-} 0.004 M {circle_dot} decrease in the {sup 56}Ni yield, slightly stronger than that due to the variation in electron fraction from the initial composition. Observations testing the dependence of the yield on metallicity remain somewhat ambiguous, but the dependence we find is comparable to that inferred from some studies.

Jackson, A. P.; Calder, A. C.; Townsley, D. M.; Chamulak, D. A.; Brown, E. F.; Timmes, F. X. (Physics); (State Univ. of New York); (Univ. of Alabama); (Michigan State Univ.); (Arizona State Univ.); (Joint Inst. for Nuclear Astrophysics)

2010-09-01T23:59:59.000Z

326

EVALUATING SYSTEMATIC DEPENDENCIES OF TYPE Ia SUPERNOVAE: THE INFLUENCE OF DEFLAGRATION TO DETONATION DENSITY  

SciTech Connect (OSTI)

We explore the effects of the deflagration to detonation transition (DDT) density on the production of {sup 56}Ni in thermonuclear supernova (SN) explosions (Type Ia supernovae). Within the DDT paradigm, the transition density sets the amount of expansion during the deflagration phase of the explosion and therefore the amount of nuclear statistical equilibrium (NSE) material produced. We employ a theoretical framework for a well-controlled statistical study of two-dimensional simulations of thermonuclear SNe with randomized initial conditions that can, with a particular choice of transition density, produce a similar average and range of {sup 56}Ni masses to those inferred from observations. Within this framework, we utilize a more realistic 'simmered' white dwarf progenitor model with a flame model and energetics scheme to calculate the amount of {sup 56}Ni and NSE material synthesized for a suite of simulated explosions in which the transition density is varied in the range (1-3) x10{sup 7} g cm{sup -3}. We find a quadratic dependence of the NSE yield on the log of the transition density, which is determined by the competition between plume rise and stellar expansion. By considering the effect of metallicity on the transition density, we find the NSE yield decreases by 0.055 {+-} 0.004 M {sub sun} for a 1 Z{sub sun} increase in metallicity evaluated about solar metallicity. For the same change in metallicity, this result translates to a 0.067 {+-} 0.004 M{sub sun} decrease in the {sup 56}Ni yield, slightly stronger than that due to the variation in electron fraction from the initial composition. Observations testing the dependence of the yield on metallicity remain somewhat ambiguous, but the dependence we find is comparable to that inferred from some studies.

Jackson, Aaron P.; Calder, Alan C. [Department of Physics and Astronomy, State University of New York-Stony Brook, Stony Brook, NY (United States); Townsley, Dean M. [Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL (United States); Chamulak, David A. [Argonne National Laboratory, Argonne, IL (United States); Brown, Edward F.; Timmes, F. X. [Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824 (United States)

2010-09-01T23:59:59.000Z

327

Exploring Cosmological Expansion Parametrizations with the Gold SnIa Dataset  

E-Print Network [OSTI]

We use the SnIa Gold dataset to compare LCDM with 10 representative parametrizations of the recent Hubble expansion history $H(z)$. For the comparison we use two statistical tests; the usual $\\chi_{min}^2$ which is insensitive to the parametrization number of parameters, and a statistic we call the p-test which depends on both the value of $\\chi_{min}^2$ and the number $n$ of the parametrization parameters. The p-test measures the confidence level to which the parameter values corresponding to LCDM are excluded from the viewpoint of the parametrization tested. For example, for a linear equation of state parametrization $w(z)=w_0 + w_1 z$ the LCDM parameter values ($w_0=-1$, $w_1=0$) are excluded at 75% confidence level. We use a flat prior and $\\Omega_{0m}=0.3$. All parametrizations tested are consistent with the Gold dataset at their best fit. According to both statistical tests, the worst fits among the 10 parametrizations, correspond to the Chaplygin gas, the brane world and the Cardassian parametrizations. The best fit is achieved by oscillating parametrizations which can exclude the parameter values corresponding to LCDM at 85% confidence level. Even though this level of significance does not provide a statistically significant exclusion of LCDM (it is less than $2\\sigma$) and does not by itself constitute conclusive evidence for oscillations in the cosmological expansion, when combined with similar independent recent evidence for oscillations coming from the CMB and matter power spectra it becomes an issue worth of further investigation.

R. Lazkoz; S. Nesseris; L. Perivolaropoulos

2005-11-10T23:59:59.000Z

328

tude de la morbidit maternelle des populations rurales du Haut Atlas occidental marocain  

E-Print Network [OSTI]

dans le monde (UNICEF, 2008, p. 6). Au Maroc, le taux de mortalité maternelle demeure élevé et stable vulnérabilité au Maroc, Abdelmounaim ABOUSSAD, Mohamed CHERKAOUI et Patrice VIMARD (Ed.) (2010) 135-154" #12;M élevés dans les familles et les communautés les moins riches et les plus marginalisées. Au Maroc, malgré

Boyer, Edmond

329

Table 2 -Lime use and practices on Corn, major producing states, 2001 CO GA IL IN IA KS KY MI MN MO NE NY NC ND OH PA SD TX WI Area  

E-Print Network [OSTI]

Table 2 - Lime use and practices on Corn, major producing states, 2001 CO GA IL IN IA KS KY MI MN.7 Table 2 - Lime use and practices on Corn, major producing states, 2000 CO IL IN IA KS KY MI MN MO NE NY use and practices on Corn, major producing states, 1999 CO IL IN IA KS KY MI MN MO NE NC OH SD TX WI

Kammen, Daniel M.

330

E-Print Network 3.0 - au calcul des Sample Search Results  

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calcul des Search Powered by Explorit Topic List Advanced Search Sample search results for: au calcul des Page: << < 1 2 3 4 5 > >> 1 Les parties colores correspondent des actions...

331

E-Print Network 3.0 - avec des agents Sample Search Results  

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agents Search Powered by Explorit Topic List Advanced Search Sample search results for: avec des agents Page: << < 1 2 3 4 5 > >> 1 Direction des Ressources Humaines Service des...

332

E-Print Network 3.0 - au cours des Sample Search Results  

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des Search Powered by Explorit Topic List Advanced Search Sample search results for: au cours des Page: << < 1 2 3 4 5 > >> 1 HORAIRE DES COURS DU CERTIFICAT EN HORTICULTURE ET...

333

UNIVERSITE IBN TOFAIL FACULTE DES SCIENCES THESE DE DOCTORAT  

E-Print Network [OSTI]

Professeur à la Faculté des Sciences de Rabat - Maroc Président Mr . A. GAUDRY Ingénieur de recherche au de Meknès - Maroc Rapporteur Mr . A. CHOUKRI Professeur à la Faculté des Sciences de Kénitra - Maroc Examinateur Mr. S. CHAKIRI Professeur à la Faculté des Sciences de Kénitra - Maroc Examinateur Mr . M

Paris-Sud XI, Université de

334

Section des Units de recherche Rapport de l'AERES  

E-Print Network [OSTI]

Section des Unités de recherche Rapport de l'AERES sur l'unité : ELLIADD (?dition, Langages : Université de Franche-Comté Janvier 2011 #12;Section des Unités de recherche Rapport de l'AERES sur l Délégué scientifique représentant de l'AERES : M. Franck NEVEU Représentant(s) des établissements et

Jeanjean, Louis

335

PRINCIPALES CARACTERISTIQUES PHYSIONOMIQUES FLORISTIQUES DES FORMATIONS FORESTIERES  

E-Print Network [OSTI]

(MOYENNE COTE D'IVOIRE) par J.L. DEVINEAU SOMMAIRE RESUME/SUMMARY 275 INTRODUCTION 275 Les lambeaux scleroxylon. Dans la plupart des cas plusieurs strates peuvent y être distinguées. Les profils présentés ici°13' de latitude Nord, place la région de Lamto sous l'influence d'un climat équatorial de transition

Paris-Sud XI, Université de

336

The DES-Model and Its Applications  

E-Print Network [OSTI]

.3. Demand forecast models G 1.4. The European DESS-Model 8 2. ESSENTIALS OF THE DES-MODEL 10 2.1. Energy systems 58 6. PRIMARY ENERGY DEMAND AND ENERGY SYSTEM COSTS 59 6. 1. Energy demand forecasts 59 6.2. Fuel-pects of the technical and economic behaviour of existing and future energy systems, e.g. forecasting of energy demand

337

SECRETARIAT GENERAL Direction des ressources humaines  

E-Print Network [OSTI]

affaires générales, délégation Ile-de-France Ouest et Nord, - Séverine Rollet, responsable ressources des travaux de réhabilitation a débuté durant l'été - IDF Ouest et Nord : réorganisation entre restaurant de Meudon et celui de Verrières, plus d'autonomie du gérant de Verrières - Nord Est : lancement

Canet, Léonie

338

au seisme des: Topics by E-print Network  

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XI, Universit de 69 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

339

au developpement des: Topics by E-print Network  

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XI, Universit de 96 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

340

au traitement des: Topics by E-print Network  

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XI, Universit de 165 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

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341

au christianisme des: Topics by E-print Network  

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XI, Universit de 73 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

342

au stockage des: Topics by E-print Network  

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XI, Universit de 82 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

343

au respect des: Topics by E-print Network  

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XI, Universit de 71 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

344

au suivi des: Topics by E-print Network  

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MYCOPLASMA BOVIS : SUIVI PIDMIOLOGIQUE ET CLINIQUE DANS DES LEVAGES BOVINS LAITIERS AU MAROC Physics Websites Summary: INFECTION ? MYCOPLASMA BOVIS : SUIVI ?PID?MIOLOGIQUE...

345

au point des: Topics by E-print Network  

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XI, Universit de 99 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

346

au niveau des: Topics by E-print Network  

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XI, Universit de 170 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

347

au moyen des: Topics by E-print Network  

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XI, Universit de 183 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

348

au sein des: Topics by E-print Network  

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XI, Universit de 163 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

349

au diagnostic des: Topics by E-print Network  

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XI, Universit de 72 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

350

au titre des: Topics by E-print Network  

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XI, Universit de 142 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

351

au service des: Topics by E-print Network  

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XI, Universit de 116 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

352

au voisinage des: Topics by E-print Network  

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XI, Universit de 103 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

353

au conditionnement des: Topics by E-print Network  

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XI, Universit de 74 L'intgration des Supply chains Internationales impliques au Maroc : Le rle du contexte culturel. Physics Websites Summary: -organisationnelle occupe une...

354

application des methodes: Topics by E-print Network  

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et entreprises connaissent un fort dveloppement des normes socio-techniques : norme ISO 9001, norme ISO 14000 etc ...Ces normes sont issues de travaux de rflexion...

355

applications des radioelements: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

occurs along the epitaxial direction. The comparison Silicium Sur Isolant (SSI, ou SOS : Silicon On Sapphire), matriau privilgi des circuits suhmi-...

356

application des isotopes: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

occurs along the epitaxial direction. The comparison Silicium Sur Isolant (SSI, ou SOS : Silicon On Sapphire), matriau privilgi des circuits suhmi-...

357

application diagnostic des: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

occurs along the epitaxial direction. The comparison Silicium Sur Isolant (SSI, ou SOS : Silicon On Sapphire), matriau privilgi des circuits suhmi-...

358

applications des procedes: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

occurs along the epitaxial direction. The comparison Silicium Sur Isolant (SSI, ou SOS : Silicon On Sapphire), matriau privilgi des circuits suhmi-...

359

application clinique des: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

occurs along the epitaxial direction. The comparison Silicium Sur Isolant (SSI, ou SOS : Silicon On Sapphire), matriau privilgi des circuits suhmi-...

360

application des fantomes: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

occurs along the epitaxial direction. The comparison Silicium Sur Isolant (SSI, ou SOS : Silicon On Sapphire), matriau privilgi des circuits suhmi-...

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


361

application des chargeurs: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

occurs along the epitaxial direction. The comparison Silicium Sur Isolant (SSI, ou SOS : Silicon On Sapphire), matriau privilgi des circuits suhmi-...

362

Jasper Johns in der Nachfolge des Ready-mades.  

E-Print Network [OSTI]

??Die Arbeit untersucht, wie die Einfhrung des Ready-mades in die Kunstwelt die Arbeitsweise von Knstlern sowie die Produktion und Wahrnehmung von Kunstwerken beeinflusst hat. Dies (more)

Mayer, Lynette Mildred

2013-01-01T23:59:59.000Z

363

aupres des piles: Topics by E-print Network  

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taient placs les dtecteurs. ?talonnage des canaux exprimentaux de la pile peuventtre . obturs compltement l'aide de blocs de graphite (dimen...

364

A L'INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE ROUEN  

E-Print Network [OSTI]

PREMELANGE PAUVRE A HAUTE PRESSION APPLIQUEES AUX TURBINES A GAZ tel-00009334,version1-30May2005 #12;tel................................................................................................................... 15 I. 4 - DIMENSIONNEMENT DES TURBINES A GAZ

Paris-Sud XI, Universit de

365

Evaluierung geoelektrischer Tiefensondierungen im Neogen und Pleistozn des nrdlichen Burgenlandes.  

E-Print Network [OSTI]

??Im Rahmen der Diplomarbeit wurden nach einer Modellierung geoelektrischer Widerstandsmodelle mit dem Programm RES2DMOD vier geologisch unterschiedliche Bereiche des nrdlichen Burgenlandes mit der Methode der (more)

Kardeis, Gerald Ludwig

2009-01-01T23:59:59.000Z

366

ENTRE LIBRE INSCRIPTION OBLIGATOIRE 8 alle des platanes, 64100 Bayonne  

E-Print Network [OSTI]

EUROP?ENNES #12;MERCREDI 23 SEPTEMBRE 16H ACCUEIL DES PARTICIPANTS Jean-Louis GOUT, Président de l

Dambrine, Marc

367

!"#$%&'()&"*'+,"('+(-.'(/'(01$2,'+,%$+( !"#$%&!'#!'#()*+'"%#!'#,-cole des Mines de Nantes  

E-Print Network [OSTI]

-Marc Menaud, HdR, cole des Mines de Nantes M. Jean-Pierre Gudon, Professeur, cole Polytechnique de Nantes M

Paris-Sud XI, Université de

368

E-Print Network 3.0 - auftrag des bundesministeriums Sample Search...  

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und Arbeit... gefrdert sowie weiters mit Mitteln des Bundesministeriums fr Verkehr, Innovation und Technologie, des... - Live-Prsentation vor der ... Source: Breu, Ruth -...

369

E-Print Network 3.0 - association des physiologistes Sample Search...  

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des physiologistes Search Powered by Explorit Topic List Advanced Search Sample search results for: association des physiologistes Page: << < 1 2 3 4 5 > >> 1 Physiological systems...

370

E-Print Network 3.0 - arithmtiques des suites Sample Search Results  

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arithmtiques des suites Search Powered by Explorit Topic List Advanced Search Sample search results for: arithmtiques des suites Page: << < 1 2 3 4 5 > >> 1 TORSEURS ARITHMTIQUES...

371

E-Print Network 3.0 - analyse multidimensionnelle des Sample...  

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multidimensionnelle des Search Powered by Explorit Topic List Advanced Search Sample search results for: analyse multidimensionnelle des Page: << < 1 2 3 4 5 > >> 1 Seance 1:...

372

E-Print Network 3.0 - amelioration des performances Sample Search...  

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des performances Search Powered by Explorit Topic List Advanced Search Sample search results for: amelioration des performances Page: << < 1 2 3 4 5 > >> 1 Motivation Amelioration...

373

E-Print Network 3.0 - au comite des Sample Search Results  

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Collection: Computer Technologies and Information Sciences 2 Le 16 juin 2011 Curriculum Vitae Summary: des professeurs des universites) a l'Universite de Toulouse III du...

374

E-Print Network 3.0 - analyse des conceptions Sample Search Results  

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Centre de mathmatiques Collection: Mathematics 2 Ecole du dveloppement durable module 4 efficacit nergtique des btiments Efficacit et matrise nergtique des btiments...

375

E-Print Network 3.0 - adduits des produits Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

de cyclisations radicalaires ...99 IV.2.1. Cyclisations radicalaires sur des adduits de Ugi ...100... 'addition-cyclisation base de thiophnol sur des adduits de Ugi contenant...

376

E-Print Network 3.0 - angulaire des particules Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

de fission... distributions de masse et de la distribution angulaire des fragments de fis- sion des noyaux lourds a t... - eurs expriences de la distribution ... Source:...

377

E-Print Network 3.0 - agricole geothermie des Sample Search Results  

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agricole geothermie des Search Powered by Explorit Topic List Advanced Search Sample search results for: agricole geothermie des Page: << < 1 2 3 4 5 > >> 1 CCOOLLEE...

378

Unit de recherche Intelsig (Exploitation des signaux et des images) Dpartement d'Electricit, Electronique et Informatique  

E-Print Network [OSTI]

'installation des parcs éoliens marins, l'enfoncement des pylônes dans le fond marin génère des niveaux sonores très source. Tester et valider le code en propagation 2D et 3D en eaux profondes et peu profondes. Tester et valider le code par rapport à un ensemble de mesures in-situ qui seront mises à la disposition de l

Embrechts, Jean-Jacques

379

Sonie directionnelle en basse frquence Effet sur des sons purs latraliss uniquement par des diffrences de temps  

E-Print Network [OSTI]

Sonie directionnelle en basse fréquence Effet sur des sons purs latéralisés uniquement par des varie elle aussi en fonction de l'azimut. Ce phénomène est connu en tant que sonie directionnelle et variation de sonie observée pour différents azimuts était supérieure à ce qui pouvait être attendu des

Paris-Sud XI, Université de

380

ABSORPTION PHOTOLECTRIQUE DES RAYONS 03B3 DANS LA COUCHE L DES ATOMES Par Mme NADINE MARTY.  

E-Print Network [OSTI]

401. ABSORPTION PHOTO?LECTRIQUE DES RAYONS 03B3 DANS LA COUCHE L DES ATOMES Par Mme NADINE MARTY la suite, comme la section efficace totale d'absorption photoélectrique par atome. Les résultats de. Laboratoire dé Chimie nucléaire, Collège de France. Sommaire. - On rappelle la valeur des sections efficaces d'absorption

Boyer, Edmond

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

LA CAVITATION A L'ORIGINE DES BRUITS DU COEUR ET DES ACCIDENTS DE DCOMPRESSION EN PLONGE.  

E-Print Network [OSTI]

1 LA CAVITATION A L'ORIGINE DES BRUITS DU COEUR ET DES ACCIDENTS DE D?COMPRESSION EN PLONG?E. R'un phénomène de cavitation à l'origine des bruits de Korotkoff. Encouragés par l'aphorisme de MacDonald comme quoi le phénomène de cavitation est plus fréquent qu'on peut le penser dans le système cardio

382

La gestion des ports par une entit publique: aspects europens et environnementaux La gestion des ports par une entit publique  

E-Print Network [OSTI]

La gestion des ports par une entité publique: aspects européens et environnementaux « La gestion des ports par une entité publique: aspects européens et environnementaux » Thèse pour le Doctorat en,version1-25Apr2014 #12;La gestion des ports par une entité publique: aspects européens et environnementaux

Paris-Sud XI, Université de

383

Diversity in extinction laws of Type Ia supernovae measured between $0.2$ and $2\\,\\mu\\mathrm{m}$  

E-Print Network [OSTI]

We present ultraviolet (UV) observations of six nearby Type~Ia supernovae (SNe~Ia) obtained with the Hubble Space Telescope, three of which were also observed in the near-IR (NIR) with Wide-Field Camera~3. UV observations with the Swift satellite, as well as ground-based optical and near-infrared data provide complementary information. The combined data-set covers the wavelength range $0.2$--$2~\\mu$m. By also including archival data of SN 2014J, we analyse a sample spanning observed colour excesses up to $E(B-V)=1.4~$mag. We study the wavelength dependent extinction of each individual SN and find a diversity of reddening laws when characterised by the total-to-selective extinction $R_V$. In particular, we note that for the two SNe with $E(B-V)\\gtrsim1~$mag, for which the colour excess is dominated by dust extinction, we find $R_V=1.4\\pm0.1$ and $R_V=2.8\\pm0.1$. Adding UV photometry reduces the uncertainty of fitted $R_V$ by $\\sim50\\,$% allowing us to also measure $R_V$ of individual low-extinction objects whi...

Amanullah, R; Goobar, A; Ferretti, R; Papadogiannakis, S; Petrushevska, T; Brown, P J; Cao, Y; Contreras, C; Dahle, H; Elias-Rosa, N; Fynbo, J P U; Gorosabel, J; Guaita, L; Hangard, L; Howell, D A; Hsiao, E Y; Kankare, E; Kasliwal, M; Leloudas, G; Lundqvist, P; Mattila, S; Nugent, P; Phillips, M M; Sandberg, A; Stanishev, V; Sullivan, M; Taddia, F; stlin, G; Asadi, S; Herrero-Illana, R; Jensen, J J; Karhunen, K; Lazarevi, S; Varenius, E; Santos, P; Sridhar, S Seethapuram; Wallstrm, S H J; Wiegert, J

2015-01-01T23:59:59.000Z

384

He H`ike no ka Ho`opihapiha `ia o ka Pepa Noi Komo no ka Papahana Ho`omkaukau Kumu `iwi `o Kahuawaiola  

E-Print Network [OSTI]

45 a `oi ma ka pae 300 a ma luna a`e paha a e k ana n koina `lelo a mo`omeheu Hawai`i e helu `ia nei`omeheu Hawai`i. 7. ka puka `ana ma ho`okahi o n papa penei: HWST 205, 471, 472, 473, 474; a i `ole ka `ae a ka `ekolu kau kona l`ihi i kkulu `ia no ka ho`omkaukau `ana i n kumu Mauli Ola Hawai`i no ka ho`ona`auao ma

Wiegner, Tracy N.

385

Mot du directeur Des ingnieurs humanistes, a existe!  

E-Print Network [OSTI]

des bacs de recyclage enfin réglé, l'adoption du Code de conduite des usagers de la Bibliothèque, et'aime plus particulièrement parce qu'il s'éloigne du strict bulletin de nouvelles. Les sujets que nous

Skorobogatiy, Maksim

386

Profils des entreprises en matire de RSE et innovation technologique  

E-Print Network [OSTI]

la nature de la relation entre la Responsabilité Sociale des Entreprises (RSE) et l'innovation : Innovation, PME, Responsabilité Sociale des Entreprises (RSE) Rachel BOCQUET - Caroline MOTHE hal-00950166 : Corporate Social Responsibility (CSR), Innovation, SME's hal-00950166,version1-25Feb2014 #12;3 Introduction

Boyer, Edmond

387

UNIVERSITE HASSAN I Settat Maroc FACULTE DES SCIENCES ET TECHNIQUES  

E-Print Network [OSTI]

UNIVERSITE HASSAN I ­ Settat ­ Maroc FACULTE DES SCIENCES ET TECHNIQUES ECOLE DOCTORALE DES Hassan I, Settat, Maroc Président du jury et Rapporteur M'hammed Said EL KEBBAJ Université Hassan II, Ben M'Sick, Casablanca, Maroc Examinateur Abdelaziz SOUKRI Université Hassan II, Ain Chock, Casablanca

Paris-Sud XI, Université de

388

presentee a L'ECOLE DES MINES DE PARIS  

E-Print Network [OSTI]

cette etude soit mis en valeur en m'initiant aux problemes speci ques de thermique des chercheurs du Centre d'Energetique de l'Ecole des Mines. Je les remercie de participer a ce jury. Parce qu'il a dechi

Paris-Sud XI, Université de

389

Explorer : des cls pour mieux comprendre la matire  

ScienceCinema (OSTI)

Le LHC va-t-il bouleverser les thories de l'infiniment petit ? Les physiciens aimeraient que l'acclrateur fasse trembler le modle standard. Cette thorie des particules lmentaires et des forces laisse de nombreuses zones d'ombre. Le LHC et ses expriences ont t conus pour les clairer.

None

2011-10-06T23:59:59.000Z

390

LIMITE SEMI-CLASSIQUE DES EQUATIONS DE SCHRODINGERPOISSON  

E-Print Network [OSTI]

. Introduction On s'int´eresse, pour ]0, 1] et x Rn , `a l'analyse BKW des ´equations : itu + 2 2 u = Vext(t, x´eveloppement BKW des ´equations de Schr¨odinger non-lin´eaires d´elicate. 1 #12;N´eanmoins, on dispose de nombreux

Alazard, Thomas

391

LES OUTILS DE CONTROLE DE GESTION DANS LE CONTEXTE DES  

E-Print Network [OSTI]

LES OUTILS DE CONTROLE DE GESTION DANS LE CONTEXTE DES PME : CAS DES PMI AU LIBAN Numro d diffrents outils de contrle de gestion utiliss dans les PMI libanaises et plus prcisment, d gestion outil de contrle calcul de cot Key words: SME - management control - cost control

Boyer, Edmond

392

Utilisation des Protocoles HARQ pour la Radio Cognitive  

E-Print Network [OSTI]

Utilisation des Protocoles HARQ pour la Radio Cognitive Romain Tajan encadré/01/2012 #12;Plan 1 Introduction 2 La Radio Cognitive Techniques de la Radio Cognitive Méthodes d'accès 3 performances du protocole IR-HARQ 4 Utilisation des protocoles HARQ pour la Radio Cognitive Utilisation de l

Dobigeon, Nicolas

393

PREVENTION DES EXPLOSIONS DE POUSSIERES ET PROTECTION CONTRE LEURS EFFETS  

E-Print Network [OSTI]

of prevention and protection of explosible atmospheres, including dust air mixtures. On the framework95-27 PREVENTION DES EXPLOSIONS DE POUSSIERES ET PROTECTION CONTRE LEURS EFFETS DIRECTIVES aujourd'hui des problemes de prevention et de protection en ce qui concerne les explosions d

Paris-Sud XI, Université de

394

Cours d't de franais 2013 PARC DES BASTIONS  

E-Print Network [OSTI]

RIVE JONCTION L'Arve M B D S PARC DES BASTIONS VIEILLE VILLE CIMETI?RE PLAINE DE PLAINPALAIS PONT HANS des périodes scolaires habituelles. Il s'agis- sait également du premier exemple de formation continue

Citi, Sandra

395

Valorisation des MIOM3 en technique routiere : suivi environnemen-  

E-Print Network [OSTI]

de MIOM de la gamme Scormat®. 1. INTRODUCTION Le Mächefer d'Incineration d'Ordures Menageres est l'incineration des ordures menageres, represente 25 ä 30 % en masse des dechets menagers incineres an (caicule sur la masse totale de dechets incineres - source ADEME 1999). ·3 MIOM : Mächefer d'Incineration d

Paris-Sud XI, Université de

396

INSTITUT DES SCIENCES ET TECHNOLOGIES cole doctorale nO  

E-Print Network [OSTI]

) Les performances des moteurs combustion interne sont limites par la quantit de gaz que leur tudes de cas : un turbocompresseur gomtrie fixe sur un moteur essence, une turbine gomtrie variable sur un moteur Diesel avec deux circuits de recirculation des gaz brls, et un turbocompresseur

Paris-Sud XI, Universit de

397

APPLICATION DES PALIERS A GAZ AUX GYROSCOPES Par G. GOBERT,  

E-Print Network [OSTI]

43 APPLICATION DES PALIERS A GAZ AUX GYROSCOPES Par G. GOBERT, Centre d'tudes Nuclaires de Saclay. Rsum. 2014 L'tude des frottements dans les paliers lubrification par gaz permet de cons- truire un avec, au centre, une turbine raction. Ces rotors sont placs entre deux butes coniques mtalliques

Paris-Sud XI, Universit de

398

Direktion des Innern Amt fr Wald und Wild  

E-Print Network [OSTI]

Direktion des Innern Amt für Wald und Wild Veranstaltungsreihe Forum Wild "Projet Lac Zugersee" Im Zug Aabachstrasse 5, Zug Veranstaltungsreihe Forum Wild "Projet Lac Zugersee" Im August 2013 hat ein, Zug Direktion des Innern Amt für Wald und Wild #12;

Wehrli, Bernhard

399

Ouverture des portes : Plonge dans le Grand Bleu... Activits libres  

E-Print Network [OSTI]

Ouverture des portes : Plongée dans le Grand Bleu... Activités libres : · Présentations de nos ... Fermeture des portes 10h En Continu 17h 10h - 12h 14h - 15h 17h 15h - 17h Samedi 10 mai 2014 Portes ouvertes

400

Dgradabilit compare dans le rumen des diffrentes fractions azotes des feuilles  

E-Print Network [OSTI]

bout de 1, 3, 6, 9, 15, 24 et 48 h. Après lavage et séchage à 60 °C, on a dosé dans le résidu l dégradation des fractions NDF et AFD du foin sont prati- quement identiques. Les cinétiques de dégradation de

Boyer, Edmond

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Traitement Automatique des Langues Naturelles, Marseille, 2014 RENAM: Systme de Reconnaissance des Entits Nommes Amazighes  

E-Print Network [OSTI]

1 (1) LRIT, Unité Associée au CNRST (URAC 29), Faculté des Sciences, Mohammed V-Agdal, Rabat, Maroc (2) IRCAM, Avenue Allal El Fassi, Madinat Al Irfane, Rabat-Instituts, Maroc meriem 1989) qu'on soit au Maroc ou ailleurs. La langue Amazighe est maintenant une langue qui possède tous

402

LA REGULATION DU STATIONNEMENT ET DES CIRCULATIONS AUTOMOBILES EN VILLE : DES POLITIQUES SOUTERRAINES D'ATTRACTIVIT AU COTS  

E-Print Network [OSTI]

LA REGULATION DU STATIONNEMENT ET DES CIRCULATIONS AUTOMOBILES EN VILLE : DES POLITIQUES circulations automobiles en ville et sur les ambitions partagées de ces politiques urbaines. Alors qu de l'automobile, nous souhaitons aborder la manière dont ces politiques urbaines prennent en compte

Paris-Sud XI, Université de

403

Proposition de sujet de Thse de Doctorat Caractrisation multi chelle des proprits hydro-go-physiques des  

E-Print Network [OSTI]

Proposition de sujet de Thèse de Doctorat Caractérisation multi échelle des propriétés hydro structurales et ainsi développer des méthodologies d'acquisition hydro-géo-physique en ce milieu complexe

Naud Frédéric

404

Reseaux des groupes de Lie (Version preliminaire)  

E-Print Network [OSTI]

Cartan. - Exemples de r´eseaux. - M´elange. Th´eor`eme de Howe-Moore. - Comptage de points dans les r´eseaux. Th´eor`eme d'Eskin-McMullen. - Vari´et´e drapeau. Th´eor`eme de Furstenberg. - Repr´esentation des r´eseaux. Th´eor`eme de superrigidit´e de Margulis. - Corps locaux. Th´eor`eme d'arithm´eticit´e de Margulis

Wienhard, Anna

405

Utilisations thrapeutiques des interfaces cerveau-ordinateur  

E-Print Network [OSTI]

motrice (contrôle par la pensée d'une orthèse, d'une prothèse ou d'un robot). Il apparaît aujourd'hui que'aide à la rééducation motrice par un patient atteint d'une hémiplégie du coté droit. Index Terms supplémentaire vers l'extérieur, par le biais de l'activité cérébrale, pour : restaurer des fonctions motrices

Paris-Sud XI, Université de

406

Un modle formel pour la gestion des connaissances J.-L. Ermine  

E-Print Network [OSTI]

- 1 - Un modle formel pour la gestion des connaissances J.-L. Ermine Management et ingnierie des connaissances, modles et mthodes Trait IC2, Srie Management et Gestion des STIC Hermes-Lavoisier, 2008 hal'alignement stratgique de la gestion des connaissances 1. Introduction Pendant de nombreuses annes, la recherche en

Boyer, Edmond

407

La gestion du manque d'eau structurel et des scheresses en France  

E-Print Network [OSTI]

La gestion du manque d'eau structurel et des scheresses en France La France est rgulirement et demande en eau se sont crs. Des politiques et dispositifs de gestion des scheresses et du politiques. Il propose des adaptations qui incluent une meilleure gestion de crise, l'introduction de droits

Boyer, Edmond

408

TRAITEMENT COMPTABLE DES DEPENSES DE R&D ET MOTIVATIONS DE GESTION  

E-Print Network [OSTI]

1 TRAITEMENT COMPTABLE DES DEPENSES DE R&D ET MOTIVATIONS DE GESTION DES RESULTATS : UNE ETUDE EMPIRIQUE SUR DES ENTREPRISES FRAN?AISES COTEES Sana TRIKI DAMAK, Doctorante en comptabilité, UR : COFFIT développement (R&D) est un sujet controversé qui pourrait être, dans certains cas, motivé par des incitations à

Paris-Sud XI, Université de

409

Institut de Chimie et des Matriaux Paris-Est UMR 7182  

E-Print Network [OSTI]

prparation des chantillons ; Patrick Ochin, Christian Jolivet Michel Parise et Jean-Louis Bonnentien pour l

410

Quelle est l'attitude actuelle des PMI franaises l'gard  

E-Print Network [OSTI]

Quelle est l'attitude actuelle des PMI franaises l'gard des pratiques de planification? Cette cadre d'analyse pertinent susceptible de faciliter l'observation des pratiques dans les PMI. partir d'article dbouche sur un essai de classification typologique des PMI en fonction de leurs attitudes et de leurs

Boyer, Edmond

411

Variations des stratgies d'anticipation visuelle en fonction de la rgle dans un jeu vido  

E-Print Network [OSTI]

partagées avec l'ensemble des environnements virtuels (Stanney, Mollaghasemi, Reeves, Breaux, & Graeber

Paris-Sud XI, Université de

412

GROUPES DE SYMETRIE EN PHYSIQUE (des hautes energies). Approfondissement PHY 575  

E-Print Network [OSTI]

´ematique et une partie physique. 1 #12;Plan des cours: ´EL´EMENTS DE TH´EORIE DES GROUPES POUR PHYSICIENSGROUPES DE SYM´ETRIE EN PHYSIQUE (des hautes ´energies). Approfondissement PHY 575 Denis Bernard et David Renard Le but de cet enseignement est de reprendre certains th`emes du cours de physique des

Renard, David

413

Impacts historiques de la colonisation  

E-Print Network [OSTI]

of Europeans. #12; Holocene extinction of 19 species of birds. PNAS (1987) 84: 2350-2354 #12;Colonisation majorit des espces n'appartiennent aucun des groupes actuels ou ancestraux connus ! #12;Extinction L'extinction de nouvelles espces #12;Au moins 5 extinctions Extinction des dinosaures Extinction de 76-96% des

Blouin-Demers, Gabriel

414

Peltier A., 2008, La cartographie rglementaire des risques naturels en Suisse, en Italie et en France , La mise en carte des risques naturels, Diversit des approches, Montpellier : Presses Universitaires de la Mditerrane,  

E-Print Network [OSTI]

Peltier A., 2008, La cartographie rglementaire des risques naturels en Suisse, en Italie et en (2008) 61-67" #12;Peltier A., 2008, La cartographie rglementaire des risques naturels en Suisse, en

Paris-Sud XI, Universit de

415

STRUCTURE OF PRESSURE PULSES IN LIQUIDS WITH GAS BUBBLES N.V. Malykh, I.A. 0G0R0DNIK0V  

E-Print Network [OSTI]

are predominant. This leads to the sound speed dispersion and determines either the short pulse structure oriSTRUCTURE OF PRESSURE PULSES IN LIQUIDS WITH GAS BUBBLES N.V. Malykh, I.A. 0G0R0DNIK0V Institute. I.-INTRODUCTION - The main specific feature of a liquide with gas bubbles is the great difference

Paris-Sud XI, Université de

416

EXCELLENTIA CoLumbIA ENgINEErINg26 en million Americans suffer from osteoporosis, a gradual weakening of the  

E-Print Network [OSTI]

HEALTH EXCELLENTIA CoLumbIA ENgINEErINg26 T en million Americans suffer from osteoporosis Laboratory, is try- ing to figure out how to prevent and treat osteoporosis from both engineering analysis of osteoporosis. Guo and his team also plan to use their knowledge to better understand osteoporosis and bone loss

Hone, James

417

EXCELLENTIA CoLumbIA ENgINEErINg22 eople suffering from brain diseases and conditions ranging from traumatic brain  

E-Print Network [OSTI]

HEALTH EXCELLENTIA CoLumbIA ENgINEErINg22 P eople suffering from brain diseases and conditions ranging from traumatic brain injury to brain cancer to progressive brain disorders could be helped if therapeu- tic drugs could be easily delivered to the affected areas. The blood-brain barrier (BBB

Hone, James

418

Cavitation in elastomeric solids: I--A defect-growth theory Oscar Lopez-Pamies a,, Martin I. Idiart b,c  

E-Print Network [OSTI]

Cavitation in elastomeric solids: I--A defect-growth theory Oscar Lopez-Pamies a,?, Marti´n I. The occurrence of such instabilities, commonly referred to as cavitation, can be attributed to the growth of pre-existing defects into finite sizes. This paper introduces a new theory to study the phenomenon of cavitation

Nakamura, Toshio

419

I.A. Karimi and Rajagopalan Srinivasan (Editors), Proceedings of the 11th International Symposium on Process Systems Engineering, 15-19 July 2012, Singapore.  

E-Print Network [OSTI]

I.A. Karimi and Rajagopalan Srinivasan (Editors), Proceedings of the 11th International Symposium for a hydrodesulfurization HDS plant of a petroleum refinery with regards to hydrogen consumption optimization. The resulting be looked for. Potential application to global refinery H2 network is also discussed. Keywords: self

Skogestad, Sigurd

420

RINNERVATION D'UN MUSCLE STRI PAR DES FIBRES PRGANGLIONNAIRES PARASYMPATHIQUES.  

E-Print Network [OSTI]

du lieu d'émer- gence du nerf récurrent, le diaphragme a été réinnervé par des fibres motrices des plaques motrices sur ce muscle ;J 3) ces plaques motrices sont fonctionnelles ; 4) l'activité des sur des fibres musculaires striées. L'activité électrique des unités motrices réinnervées peut être

Boyer, Edmond

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Les marchands orientaux et les langues occidentales au XVIIe sicle : l'exemple des Choffelins de Marseille  

E-Print Network [OSTI]

1 Les marchands orientaux et les langues occidentales au XVIIe siècle : l'exemple des « Choffelins » de Marseille La question des marchands et des langues à l'époque moderne est loin d'être un domaine la question des marchands et des langues dans le commerce de moyenne et longue distances. Le but de

Paris-Sud XI, Université de

422

Conservatoire national des Arts et Mtiers Prsente au Conservatoire national des Arts et Mtiers  

E-Print Network [OSTI]

cellulaire et l'apoptose (cytométrie de flux) dans les lignées cellulaires de cancer du sein MCF-7 (RE+, RE cellules (transactivation) et dans des cellules négatives pour les REs nucléaires SKBr3 (GPR30+) (études de les cellules MCF-7 et MDA-MB-231 associés à une inhibition de la prolifération et un arrêt du cycle

Paris-Sud XI, Université de

423

Linarisation des amplificateurs de puissance par pr-distorsion avec prise en compte des effets mmoire  

E-Print Network [OSTI]

mémoire Geneviève BAUDOIN1, Pascale JARDIN1, Roman MARSALEK1,2 1ESYCOM - ESIEE - Laboratoire des Signaux effets de mémoire. Abstract ­ We present a baseband adaptive pre-distorion technique to linearize power-distortion system that is applied as a pre-distortion. The form of the pre-distorter is a polynomial with memory

Baudoin, Geneviève

424

Dtermination du rgime des bovins exploitant des parcours agropastoraux soudano-sahliens (Sngal)  

E-Print Network [OSTI]

the proportion of plant epiderms in the faeces. The proportions plants epiderms in faeces of cattle were found «traces» avec une contribution spécifique présence (CSP : proportion en pourcentage du nombre total de'une plante donnée varie avec la méthode de préparation des lames (fig 1): les monocotylédones appa- raissent

Boyer, Edmond

425

Mathmatiques et interactions des mathmatiques Participation des lus C aux valutations de l'AERES  

E-Print Network [OSTI]

évalutations de l'AERES La section 41 du comité national, lors de sa première réunion du nouveau mandat, demande par cette motion aux présidents de comités d'AERES d'intégrer systématiquement dans les comités de, directeur de la section des unités à l'AERES. #12;

Pouyanne, Nicolas

426

HYPOTHSES SUR L'ORIGINE DES BRUITS DU COEUR ET DES ACCIDENTS DE DCOMPRESSION EN PLONGE : LA CAVITATION.  

E-Print Network [OSTI]

CAVITATION. HYPOTH?SE SUR L'ORIGINE DE LA FERMETURE DES VALVES CARDIAQUES : LE RETARD ? LA FERMETURE DES un travail antérieur, l'hypothèse d'un phénomène de cavitation à l'origine des bruits de Korotkoff. Encouragés par l'aphorisme de MacDonald comme quoi le phénomène de cavitation est plus fréquent qu'on peut le

Paris-Sud XI, Université de

427

Etude des interactions entre services des cosystmes Rives, F.; Antona, M.; Aubert, S.;Carrire, S.;Ichaou, A.; Montagne, P; Peltier R.; Sibelet, N.  

E-Print Network [OSTI]

.;Ichaou, A.; Montagne, P; Peltier R.; Sibelet, N. ISDA 2010, Montpellier, June 28-30, 2010 1 ETUDE DES , Aboubacar ICHAOU5 , Pierre MONTAGNE6 , Rgis PELTIER7 , Nicole SIBELET8 1 Unit de recherche Gestion des services des cosystmes Rives, F.; Antona, M.; Aubert, S.;Carrire, S.;Ichaou, A.; Montagne, P; Peltier R

Paris-Sud XI, Universit de

428

Votre t petit prix !!! Depuis 60 ans au service des vacances familles et enfants, Vacances Pour Tous propose une autre ide des vacances !  

E-Print Network [OSTI]

4 Mai 2012 Votre été à petit prix !!! Depuis 60 ans au service des vacances familles et enfants, Vacances Pour Tous propose une autre idée des vacances ! Nos équipes vous proposent des vacances en villages vacances, locations, campings en France et à l'étranger mais aussi le plus grand choix de

Arleo, Angelo

429

IMPORTANCE DE LA PARAMETRISATION HYDRODYNAMIQUE DES PREMIERS CENTIMETRES DU SOL  

E-Print Network [OSTI]

'une saison sèche et d'une saison des pluies. Au cours de la saison sèche, le vent dominant est l'Harmattan

430

eefnparticipants Academie Royale des Sciences de Su`ede  

E-Print Network [OSTI]

.grazzini@inria.fr Ph.D. student: image processing, meteorological and pollution models. AIR Project, INRIA Rocquencourt`ere. Jean Serra, ´Ecole des Mines. serra@cmm.ensmp.fr Professor, Member of the Organizing Committee, Invited

Kiselman, Christer

431

Amlioration des plantes Une contribution la slection simultane  

E-Print Network [OSTI]

Amlioration des plantes Une contribution la slection simultane sur plusieurs caractres : l programmation linaire, outil mathmatique souvent utilis en recherche oprationnelle, permet de complter l Summary A contribution to multitrait selection: the use of linear programming. Linear programming

Boyer, Edmond

432

Contribution phytocologique et dynamique l'tude des cosystmes forestiers.  

E-Print Network [OSTI]

Contribution phytocologique et dynamique l'tude des cosystmes forestiers. Applications aux forts du Nord-Est de la France J.-C. RAMEAU Phytocologie forestire l'E.N.GProfesseur de

Boyer, Edmond

433

au test des: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

au test des First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 INSTITUTNATIONALDESSCIENCESAPPLIQUESDELYON...

434

"Sauver la nuit" : empreinte lumineuse, urbanisme et gouvernance des territoires.  

E-Print Network [OSTI]

??Notre socit entretient une relation complexe avec la nuit, espace-temps souvent hors des cadences diurnes qui favorise la rflexion, limaginaire, la cration, lcoute et le (more)

Challat, Samuel

2010-01-01T23:59:59.000Z

435

Teilnehmer des deutsch-ukrainisch-polnischen Seminars in Tscherniwzi 2012  

E-Print Network [OSTI]

Teilnehmer des deutsch-ukrainisch-polnischen Seminars in Tscherniwzi 2012 BAYHOST & die Ukraine. Gefördert durch den DAAD veranstaltete BAYHOST zwei Deutsch - Ukrainische Seminare, die sich dem Thema

Schubart, Christoph

436

Nr. 142 / 2011 // 28. Juli 2011 Gewinner des Malwettbewerbs der  

E-Print Network [OSTI]

Bayreuth, Dr. Markus Zanner, Angela Danner, der persönlichen Referentin des Präsidenten, Professor Anno. Markus Zanner und Angela Danner) 737 Zeichen 15 Zeilen ca. 60 Anschläge/Zeile Abdruck honorarfrei #12;

Ullmann, G. Matthias

437

Valley wins High School Science Bowl | The Ames Laboratory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Valley wins High School Science Bowl West Des Moines Valley defeated Bettendorf 72-32 in the championship match to win the 25th Ames LaboratoryIowa State University Regional High...

438

Labsolu rugissement dbraill dune absence insense de la mtaphore Poetry, photography, eroticism  

E-Print Network [OSTI]

capacit sexuelle)). Des reprsentations porno doivent donc maner quelques stimuli qui nous touchent en sorte quon soit comme aspirs (au moins momentanment) vers une vrit matrielle, phnomnale et qui transcende la reprsentation, sort delle et...

Khalfa, Jean

2014-01-01T23:59:59.000Z

439

E-Print Network 3.0 - apollo landing sites Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2004 12;20 CHAPITRE 1. LES MISSIONS D'EXPLORATION DE LA LUNE Fig. 1.4 - Carte des sites Luna, Apollo... dans la region du cratere Fra Mauro, a moins de 200 km du site ......

440

Ecole Polytechnique de Bruxelles -Facult des Sciences SOLVAY AWARDS 2013  

E-Print Network [OSTI]

Ecole Polytechnique de Bruxelles - Faculté des Sciences SOLVAY AWARDS 2013 Informations sur le dossier à transmettre et la procédure à suivre Objectif Le Groupe Solvay décerne annuellement un Prix, dénommé « SOLVAY AWARDS » à des diplômés scientifiques clôturant un deuxième cycle universitaire (Master

Cerf, Nicolas

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Des frontires du corps aux frontires de l'identit  

E-Print Network [OSTI]

incapacités motrices majeures Thèse soutenue le 21 octobre 2013 devant le jury composé de : David LE BRETON'une vie au quotidien avec des incapacités motrices majeures - 2013 tel-00904373,version1-14Nov2013 #12'EXPERIENCE D'UNE VIE AU QUOTIDIEN AVEC DES INCAPACITES MOTRICES MAJEURES Thèse de Doctorat Discipline

Paris-Sud XI, Université de

442

Cryptanalysis of S-DES Dr. K. S. Ooi  

E-Print Network [OSTI]

recovery. Other forms of security threat do exist, for example: identity theft, cyber stalking and cyber-DES Results 8.8 Difference Pair Table of S0 8.9 Difference Pair Table of S1 8.10 Difference Distribution Table of S0 8.11 Difference Distribution Table of S1 8.12 Differential Characteristic of S-DES 8.13 I/0 Table

Babinkostova, Liljana

443

Tables des principaux minerais d'uranium et de thorium  

E-Print Network [OSTI]

233 Tables des principaux minerais d'uranium et de thorium Par B. SZILARD [Faculté des Sciences de minerais d'uranium et de thorium avec leurs données les plus importantes, telles que la com- position, la teneur en uranium et en thorium, la provenance et quelques indications générales. La liste ne prétend pas

Paris-Sud XI, Université de

444

Commande des liaisons HVDC dans un contexte reseau  

E-Print Network [OSTI]

Commande des liaisons HVDC dans un contexte r´eseau Leyla Arioua , Bogdan Marinescu , Eric´esum´e : Maintes solutions ont ´et´e propos´ees afin de contr^oler les liaisons `a courant continu (HVDC Matlab ainsi qu'Eurostag pour des syst`emes de grande dimension. Mots-cl´es: HVDC, stabilit´e transitoire

Paris-Sud XI, Université de

445

Inventaire des documents F.1 Documents d'archives  

E-Print Network [OSTI]

´epartements (1834­1839). F7 3842 - rapports g´en´eraux de surveillance de la police (an IV - 1827). F18 I - 146 - enregistrement des journaux non caution- n´es (no 4 et no 285). F18 1 `a 119 - d´eclarations de divers imprimeurs, entre 1817 et 1834, sur le tirage des journaux. F18 355­383 - d´eclarations de divers ´editeurs de jour

Kleinert, Hagen Michael

446

THE TIP OF THE RED GIANT BRANCH DISTANCES TO TYPE Ia SUPERNOVA HOST GALAXIES. II. M66 AND M96 IN THE LEO I GROUP  

SciTech Connect (OSTI)

M66 and M96 in the Leo I Group are nearby spiral galaxies hosting Type Ia supernovae (SNe Ia). We estimate the distances to these galaxies from the luminosity of the tip of the red giant branch (TRGB). We obtain VI photometry of resolved stars in these galaxies from F555W and F814W images in the Hubble Space Telescope archive. From the luminosity function of these red giants, we find the TRGB I-band magnitude to be I{sub TRGB} = 26.20 {+-} 0.03 for M66 and 26.21 {+-} 0.03 for M96. These values yield distance modulus (m - M){sub 0} = 30.12 {+-} 0.03(random) {+-} 0.12(systematic) for M66 and (m - M){sub 0} = 30.15 {+-} 0.03(random) {+-} 0.12(systematic) for M96. These results show that they are indeed the members of the same group. With these results we derive absolute maximum magnitudes of two SNe (SN 1989B in M66 and SN 1998bu in M96). V-band magnitudes of these SNe Ia are {approx}0.2 mag fainter than SN 2011fe in M101, one of the nearest recent SNe Ia. We also derive near-infrared magnitudes for SN 1998bu. Optical magnitudes of three SNe Ia (SN 1989B, SN 1998bu, and SN 2011fe) based on TRGB analysis yield a Hubble constant, H{sub 0} = 68.4 {+-} 2.6(random) {+-} 3.7(systematic) km s{sup -1} Mpc{sup -1}. This value is similar to the values derived from recent WMAP9 results, H{sub 0} = 69.32 {+-} 0.80 km s{sup -1} Mpc{sup -1}, and from Planck results, H{sub 0} = 67.3 {+-} 1.2 km s{sup -1} Mpc{sup -1}, but smaller than other recent determinations based on Cepheid calibration for SNe Ia luminosity, H{sub 0} = 74 {+-} 3 km s{sup -1} Mpc{sup -1}.

Lee, Myung Gyoon; Jang, In Sung, E-mail: mglee@astro.snu.ac.kr, E-mail: isjang@astro.snu.ac.kr [Astronomy Program, Department of Physics and Astronomy, Seoul National University, Gwanak-gu, Seoul 151-742 (Korea, Republic of)

2013-08-10T23:59:59.000Z

447

Les incidents lis la protection juridique des investissements trangers en Chine : effectivit des voies de recours.  

E-Print Network [OSTI]

??Ce travail de recherche a pour objectif d'apporter un clairage et une comprhension sur l'volution du droit des affaires en Chine et plus particulirement sur (more)

Davant, Jrme

2010-01-01T23:59:59.000Z

448

PROPAGATION DES ONDES LASTIQUES DE SURFACE Atlas des configurations calcules pour le quartz, le tantalate de lithium,  

E-Print Network [OSTI]

, le tantalate de lithium, le niobate de lithium et le vanado-sulfure de thallium en ce qui concerne'ensemble des configurations possibles des matériaux classiques (quartz, niobate de lithium et tantalate de lithium) ainsi que d'un matériau récemment signalé le vanado-sulfure de thallium (Tl3VS4). La propagation

Paris-Sud XI, Université de

449

Comptes Rendus des JNC 17 -Poitiers 2011 Simulation par lments finis des procds par infusion de rsine  

E-Print Network [OSTI]

Comptes Rendus des JNC 17 - Poitiers 2011 Simulation par éléments finis des procédés par infusion de résine Finite Simulation of the liquid infusion processes G. Pacquaut, J. Bruchon, N. Moulin, S permettant de simuler par éléments finis les procé- dés par infusion de résine au travers de renforts fibreux

Paris-Sud XI, Université de

450

Hommes et milieux : volution, interactions Participation des elus C aux comits de visite des units par l'AERES  

E-Print Network [OSTI]

de visite des unités par l'AERES La section 31 du comité national, lors de la session d'automne 2012, demande par cette motion à la direction de l'AERES d'intégrer systématiquement dans les comités de visite que leur opinion puisse s'exprimer et être prise en compte au cours de l'évaluation des unités par l'AERES

van Tiggelen, Bart

451

HYPOTHSES SUR L'ORIGINE DES BRUITS DU COEUR ET DES ACCIDENTS DE DCOMPRESSION EN PLONGE : LA CAVITATION.  

E-Print Network [OSTI]

CAVITATION. HYPOTH?SE SUR L'ORIGINE DE LA FERMETURE DES VALVES CARDIAQUES : LE PH?NOM?NE DE VENTOUSE. Dr. R'un phénomène de cavitation à l'origine des bruits de Korotkoff. Encouragés par l'aphorisme de MacDonald comme quoi le phénomène de cavitation est plus fréquent qu'on peut le penser dans le système cardio

452

Identification of the feature that causes the I-band secondary maximum of a type Ia supernova  

E-Print Network [OSTI]

We obtained a time series of spectra covering the secondary maximum in the I-band of the bright Type Ia supernova 2014J in M82 with the TIGRE telescope. Comparing the observations with theoretical models calculated with the time dependent extension of the PHOENIX code, we identify the feature that causes the secondary maximum in the I-band light curve. Fe II 3d6(3D)4s-3d6(5D)4p and similar high excitation transitions produce a blended feature at 7500 {\\AA}, which causes the rise of the light curve towards the secondary maximum. The series of observed spectra of SN 2014J and archival data of SN 2011fe confirm this conclusion. We further studied the plateau phase of the Rband light curve of SN 2014J and searched for features which contribute to the flux. The theoretical models do not clearly indicate a new feature that may cause the Rband plateau phase. However, Co II features in the range of 6500 - 7000 {\\AA} and the Fe II feature of the I-band are clearly seen in the theoretical spectra, but do not appear to ...

Jack, D; Hauschildt, P H

2015-01-01T23:59:59.000Z

453

ROLE OF EJECTA CLUMPING AND BACK-REACTION OF ACCELERATED COSMIC RAYS IN THE EVOLUTION OF TYPE Ia SUPERNOVA REMNANTS  

SciTech Connect (OSTI)

We investigate the role played by initial clumping of ejecta and by efficient acceleration of cosmic rays (CRs) in determining the density structure of the post-shock region of a Type Ia supernova remnant (SNR) through detailed three-dimensional MHD modeling. Our model describes the expansion of an SNR through a magnetized interstellar medium, including the initial clumping of ejecta and the effects on shock dynamics due to back-reaction of accelerated CRs. The model predictions are compared to the observations of SN 1006. We found that the back-reaction of accelerated CRs alone cannot reproduce the observed separation between the forward shock and the contact discontinuity unless the energy losses through CR acceleration and escape are very large and independent of the obliquity angle. On the contrary, the clumping of ejecta can naturally reproduce the observed small separation and the occurrence of protrusions observed in SN 1006, even without the need of accelerated CRs. We conclude that forward shock-contact discontinuity separation is a probe of the ejecta structure at the time of explosion rather than a probe of the efficiency of CR acceleration in young SNRs.

Orlando, S.; Bocchino, F.; Miceli, M. [INAF-Osservatorio Astronomico di Palermo 'G. S. Vaiana', Piazza del Parlamento 1, 90134 Palermo (Italy); Petruk, O. [Institute for Applied Problems in Mechanics and Mathematics, Naukova Street, 3-b Lviv 79060 (Ukraine); Pumo, M. L., E-mail: orlando@astropa.inaf.it [INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova (Italy)

2012-04-20T23:59:59.000Z

454

Testing Models of Intrinsic Brightness Variations in Type Ia Supernovae, and their Impact on Measuring Cosmological Parameters  

E-Print Network [OSTI]

For spectroscopically confirmed type Ia supernovae we evaluate models of intrinsic brightness variations with detailed data/Monte-Carlo comparisons of the dispersion in the following quantities: Hubble-diagram scatter, color difference (B-V-c) between the true B-V color and the fitted color (c) from the SALT-II light curve model, and photometric redshift residual. The data sample includes 251 ugriz light curves from the 3-season Sloan Digital Sky Survey-II, and 191 griz light curves from the Supernova Legacy Survey 3-year data release. We find that the simplest model of a wavelength independent (coherent) scatter is not adequate, and that to describe the data the intrinsic scatter model must have wavelength-dependent variations. We use Monte Carlo simulations to examine the standard approach of adding a coherent scatter term in quadrature to the distance-modulus uncertainty in order to bring the reduced chi2 to unity when fitting a Hubble diagram. If the light curve fits include model uncertainties with the c...

Kessler, Richard; Marriner, John; Betoule, Marc; Brinkmann, Jon; Cinabro, David; El-Hage, Patrick; Frieman, Joshua; Jha, Saurabh; Mosher, Jennifer; Schneider, Donald P

2012-01-01T23:59:59.000Z

455

E-Print Network 3.0 - analyse quantitative des Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

de Lyon 1A -Approfondissement Summary: Dellandra - 2008-2009 TD 1 - Introduction Matlab et codage des donnes en vue de leur analyse L... raliser un codage des donnes,...

456

E-Print Network 3.0 - aspects des complications Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

des complications Search Powered by Explorit Topic List Advanced Search Sample search results for: aspects des complications Page: << < 1 2 3 4 5 > >> 1 L.-E. JEWELL. 2014 The...

457

E-Print Network 3.0 - au temps des Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

temps des Search Powered by Explorit Topic List Advanced Search Sample search results for: au temps des Page: << < 1 2 3 4 5 > >> 1 Bases de Donnes -TD6 Licence Informatique...

458

E-Print Network 3.0 - appauvri chez des Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

appauvri chez des Search Powered by Explorit Topic List Advanced Search Sample search results for: appauvri chez des Page: << < 1 2 3 4 5 > >> 1 Perception, plasticit et vie...

459

E-Print Network 3.0 - appliques des lyon Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

des lyon Search Powered by Explorit Topic List Advanced Search Sample search results for: appliques des lyon Page: << < 1 2 3 4 5 > >> 1 Center for Turbulence Research Proceedings...

460

E-Print Network 3.0 - au secteur des Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

secteur des Search Powered by Explorit Topic List Advanced Search Sample search results for: au secteur des Page: << < 1 2 3 4 5 > >> 1 Mathmatiques l'industrie et le Summary:...

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Accelerated Publications Three-Dimensional Structure of DesVI from Streptomyces Venezuelae: A Sugar  

E-Print Network [OSTI]

Accelerated Publications Three-Dimensional Structure of DesVI from Streptomyces Venezuelae: A Sugar for the biosynthesis of dTDP-desosamine in Streptomyces Venezuelae, with the last step catalyzed by DesVI, an N

Holden, Hazel

462

Molecular architecture of DesV from Streptomyces venezuelae: A PLP-dependent transaminase involved in  

E-Print Network [OSTI]

Molecular architecture of DesV from Streptomyces venezuelae: A PLP-dependent transaminase involved are required for its biosynthesis in Streptomyces venezuelae. The focus of this article is DesV, which

Holden, Hazel

463

MICRO-CAPTEURS POUR LA GESTION DURABLE DE LA QUALITE DES EAUX Namour Philippe1 *  

E-Print Network [OSTI]

1 MICRO-CAPTEURS POUR LA GESTION DURABLE DE LA QUALITE DES EAUX Namour Philippe1 * , Khadro Basma 2 besoins tant réglementaires (DCE, LEMA) que cognitifs, (exploration du fonctionnement des hydro

Boyer, Edmond

464

Les Bons Ingredients pour un Haut Niveau de Performance des Installations Climatiques  

E-Print Network [OSTI]

DE POST-RECEPTION DES SERVICES ADAPTES AUX BESOINS, CONTRACTUELS DES SERVICES ADAPTES AUX BESOINS, CONTRACTUELS 1 an RECEPTION RECEPTION ICEBO ? C ommiss 7 Le dossier technique Le dossier technique usage, maintenance, exploitation, usage, maintenance..., exploitation, selon le contratselon le contrat DOSSIER DOEFichesNotices d?usageMAP Ajustements des r?glages, fonctions DIUO de la GTB, nettoyages sanitaires? P.V.COPREC RECEPTION DOSSIER DOEFichesNotices d?usageMAPAjustements des r?glages, DIUO Fonctions de...

Rougnon, J.

2004-01-01T23:59:59.000Z

465

E-Print Network 3.0 - analysis untersuchung des Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

mithilfe der o.g. Zuverlssigkeitsanalyse... -orientierten Modellierungssprache Modelica vorgesehen. Als Beispiel ist in der Abbildung die Nicksteuerung des ... Source:...

466

Comptes rendus l'Acadmie des Sciences Special issue on nanosciences/nanotechnologies  

E-Print Network [OSTI]

Comptes rendus à l'Académie des Sciences Special issue on nanosciences/nanotechnologies March 1st manuscript, published in "Comptes rendus à l'Académie des Sciences (2011) Special issue on nanosciences/ nanotechnologies" #12;Comptes rendus à l'Académie des Sciences Special issue on nanosciences/nanotechnologies March

Paris-Sud XI, Université de

467

L'ACCUEIL DES NAVIRES DE PLAISANCE EN BRETAGNE DANS LA PERSPECTIVE D'UNE GESTION  

E-Print Network [OSTI]

L'ACCUEIL DES NAVIRES DE PLAISANCE EN BRETAGNE DANS LA PERSPECTIVE D'UNE GESTION INTGRE DES ZONES prconisations de l'Union Europenne en faveur d'une gestion intgre des zones ctires (GIZC), dclinaison du, au cas par cas, d'estimer au mieux les retombes et la pertinence de chaque projet. Ceux-ci doivent

Boyer, Edmond

468

Licence Professionnelle, CISI 2009-2010 Cours 9 : Gestion des exceptions  

E-Print Network [OSTI]

cas o une exception a t leve http://www710.univ-lyon1.fr/~ecoquery #12;6 Gestion des exceptions1 Java Licence Professionnelle, CISI 2009-2010 Cours 9 : Gestion des exceptions Entree/Sortie #12;2 Gestion des exceptions Introduction : qu'est-ce qu'une exception ? - De nombreux langages de

Belad, Abdel

469

Gestion stratgique des comptences en PME : les enseignements d'une recherche-action  

E-Print Network [OSTI]

1 Gestion stratgique des comptences en PME : les enseignements d'une recherche-action Jean, France Introduction Si pendant longtemps, le besoin des entreprises n'allait pas au-del d'une gestion proccupation croissante autour de la gestion des comptences (Dfelix, 2003 ; Le Boterf, 2000), de sorte que

Boyer, Edmond

470

LeTemps.ch I Des robots pour mieux comprendre l,volution 08011217:49  

E-Print Network [OSTI]

LeTemps.ch I Des robots pour mieux comprendre l,volution LE TEMPs 08011217:49 biologie Vendredi6 janvier 2012 Des robots pour mieux comprendre l'6volution Par L'aldatoire entrerait en jeu Le d6'y parvenir en employant comme cobayes... des robots. Etude qu,ils publient cette semaine dans une

Alvarez, Nadir

471

Certification des structures d'hospitalisation domicile VS certification ISO 9000  

E-Print Network [OSTI]

Certification des structures d'hospitalisation domicile VS certification ISO 9000 RYM BEN comparative entre la certification ISO 9000 (International Organisation for Standardization) et la certification des HAD. Il s'agit de comparer la certification ISO 9000 celle des tablissements de sant et

Paris-Sud XI, Universit de

472

A frequent tyrosinase gene mutation associated with type I-A (tyroinase-negative) oculocutaneous albinism in Puerto Rico  

SciTech Connect (OSTI)

The authors have determined the mutations in the tyrosinase gene from 12 unrelated Puerto Rican individuals who have type I-A (tyrosinase-negative) oculocutaneous albinism (OCA). All but one individual are of Hispanic descent. Nine individuals were homozygous for a missense mutation (G47D) in exon I at codon 47. Two individuals were heterozygous for the G47D mutation, with one having a missense mutation at codon 373 (T373K) in the homologous allele and the other having an undetermined mutation in the homologous allele. One individual with negroid features was homozygous for a nonsense mutation (W236X). The population migration between Puerto Rico and the Canary Islands is well recognized. Analysis of three individuals with OCA from the Canary Islands showed that one was a compound heterozygote for the G47D mutation and for a novel missense mutation (L216M), one was homozygous for a missense mutation (P81L), and one was heterozygous for the missense mutation P81L. The G47D and P81L missense mutations have been previously described in extended families in the United States. Haplotypes were determined using four polymorphisms linked to the tyrosinase locus. Haplotype analysis showed that the G47D mutation occurred on a single haplotype, consistent with a common founder for all individuals having this mutation. Two different haplotypes were found associated with the P81L mutation, suggesting that this may be either a recurring mutation for the tyrosinase gene or a recombination between haplotypes. 28 refs., 1 fig., 3 tabs.

Oetting, W.S.; Witkop, C.J. Jr.; Brown, S.A.; Fryer, J.P.; Bloom, K.E.; King, R.A. (Univ. of Minnesota, Minneapolis (United States)); Colomer, R. (Servicio Medico de Empressa de la ONCE, Canary Islands (Spain))

1993-01-01T23:59:59.000Z

473

Des Plaines, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump to:52c8ff988c1Dering Harbor, New York: Energy Resources JumpDes PlainesDes

474

Aussi avons-nous ensuite 6tudi6 des cristaux fabriqu6s au laboratoire (creusets de platine) [4],  

E-Print Network [OSTI]

- lement les deux pics P1 et P2. Apr6s avoir dope des cristaux de fluorure de lithium avec des ions Mn, irradiation et corrosion par des gaz). Puis on traite des phnomnes qui se produisent pendant et aprs

Paris-Sud XI, Universit de

475

TUDE DES CIBLES MINCES CHARGES DE TRITIUM UTILISES DANS LES ACCLRATEURS PRODUISANT DES NEUTRONS RAPIDES PAR LA RACTION D-T  

E-Print Network [OSTI]

61 ?TUDE DES CIBLES MINCES CHARG?ES DE TRITIUM UTILIS?ES DANS LES ACC?L?RATEURS PRODUISANT DES [titane-tritium]préparées par le Département des Radioéléments de Saclay. Dix sept cibles ont été ainsi rendement. Abstract. 2014 This study permits the determination of the efficiency of titan-tritium targets

Paris-Sud XI, Université de

476

Salon International des Energies (SIDE), International Energy Exhibition & Conference Oil, Gas, Mining, RnE, October 2 -5, 2012 Palais des Congrs -Marrakech, Maroc.  

E-Print Network [OSTI]

, Mining, RnE, October 2 - 5, 2012 Palais des Congrès - Marrakech, Maroc. Potential source rocks of Late

Olsen, Paul E.

477

PERTES CARACTRISTIQUES DES LECTRONS DANS TlCl, TlBr, Tl I ET CALCUL DES FONCTIONS OPTIQUES ENTRE 3 ET 25 eV  

E-Print Network [OSTI]

diffèrent des halogé- nures alcalins notamment par leur grande constante diélectrique optique et par un

Paris-Sud XI, Université de

478

L'expertise en conduite automobile peut-elle moduler le phnomne d'extension des limites ?  

E-Print Network [OSTI]

L'expertise en conduite automobile peut-elle moduler le phénomène d'extension des limites'observateur vis-à-vis de la scène perçue, est sensible aux connaissances expertes. Des conducteurs automobiles automobile peut-elle moduler le phénomène d'extension des limites ? L'un des aspects les plus intrigants des

Jeanjean, Louis

479

Direction des immeubles Prparation du courrier prioritaire pour le Canada  

E-Print Network [OSTI]

Direction des immeubles Préparation du courrier prioritaire pour le Canada Comment faire? 1 requis ainsi que le code postal Pour expédier du courrier par Postes Canada · Vous pouvez utiliser une adresse civique et/ou une case postale. · Pour recevoir du courrier par Postes Canada, vous devez utiliser

Charette, André

480

VOLUTION DES FERRITES DOUX POUR TLCOMMUNICATIONS ET TLVISION  

E-Print Network [OSTI]

837 ?VOLUTION DES FERRITES DOUX POUR T?L?COMMUNICATIONS ET T?L?VISION R. SIBILLE Directeur Technique de L. C. C. Division Ferrites (COFELEC) Thomson C. S. F., 74 Route de Savigny, 21204 Beaune deuxième guerre mondiale), les ferrites doux sont encore en pleine évolution et nombreux sont ceux qui leur

Boyer, Edmond

Note: This page contains sample records for the topic "ia des moines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

LES DETERMINANTS DES DISCOURS MANAGERIAUX : APPLICATION AUX CAS  

E-Print Network [OSTI]

-techniques : norme ISO 9001, norme ISO 14000 etc ...Ces normes sont issues de travaux de réflexion réalisés certaines, entre autres la norme ISO 9001, des responsables qualité ayant une autre formation d'origine. Ceci s'explique par le fait que la norme ISO 9001 organise la circulation documentaire au sein de l

Paris-Sud XI, Université de

482

Facult des Lettres INSTITUT D' ETlil{OLOGIE  

E-Print Network [OSTI]

'OIBE D' EII HHO-BOTANIQUE ET DI ETHNO-ZOOLOGIE PARIS LE COMPORTEMENT ALI~OENTAlRE DES A1~IV~UX SAUVAGES Eusum IJational d 'Histoire--Naturelle LABOiLAC[tOIJ_-U:~; D' ET'HHO-B01\\AFfIQE ET DI ETHNO

Paris-Sud XI, Universit de

483

LES DETERMINANTS DES COMPETENCES DE LA FONCTION GESTION-FINANCE  

E-Print Network [OSTI]

LES DETERMINANTS DES COMPETENCES DE LA FONCTION GESTION-FINANCE Pierre-Laurent, Bescos Professeur'enjeu est de donner alors aux étudiants et professionnels de la fonction gestion-finance une formation de, les aptitudes et les grades au sein de la fonction gestion-finance. Mots clés : compétences, enquête

Paris-Sud XI, Université de

484

Bestimmung des ep{Wirkungsquerschnittes von Beauty-Quarks  

E-Print Network [OSTI]

Bestimmung des ep{Wirkungsquerschnittes von Beauty-Quarks durch ihren semileptonischen Zerfall in Myonen mit dem H1-Detektor bei HERA Determination of the ep Cross Section for Beauty Quarks via werden die sichtbaren ep-Wirkungsquerschnitte fur schwere Quarks in dem kinematischen Bereich Q2

485

Bernard CALMETTES Contribution l'tude des curriculums.  

E-Print Network [OSTI]

1 Bernard CALMETTES Contribution l'tude des curriculums. Le cas de l'enseignement de l le dveloppement d'une "culture" : Au niveau d'excution, mme fort lev dans la hirarchie-00278552,version1-13May2008 #12;4 dans l'enseignement une culture scientifique gnrale, apparemment

Boyer, Edmond

486

prsente L'cole Nationale Suprieure des Mines de Paris  

E-Print Network [OSTI]

la thèse: ESTIMATION ET CONTR?LE D'UN MOTEUR DIESEL HCCI. ESTIMATION DES SYST?MES P?RIODIQUES Examinateur #12;#12;Jonathan CHAUVIN ESTIMATION AND CONTROL OF A DIESEL HCCI ENGINE. ESTIMATION FOR TIME.chauvin@ifp.fr Url : www.cas.ensmp.fr/chauvin Key words and phrases. -- Engine control, HCCI, air path control

Paris-Sud XI, Université de

487

Consommer des produits alimentaires locaux : comment et pourquoi ?1  

E-Print Network [OSTI]

redécouverte des saveurs, la volonté de consommer responsable et la recherche de lien social. L'analyse s, produit local, circuits courts, marketing agroalimentaire, lien producteur-consommateur. Local food: how for sustainable consumption and the search for social relationships. The analysis is based on a qualitative study

Paris-Sud XI, Université de

488

TUDE DES PHOTODSINTGRATIONS. , II. QUELQUES RSULTATS EXPRIMENTAUX SUR LES PHOTODSINTGRATIONS  

E-Print Network [OSTI]

était inférieur à ceux observés, en général, par Hirzel et Wâffler. Toms, Halpern et Stephens [5], [6 les iso- topes du magnésium, dont certaines conduisent à des nuclides stables. Byerly et Stephens [7

Paris-Sud XI, Université de

489

ATLAS-Experiment Abbildung 50: Aufbau des ATLAS Detektors.  

E-Print Network [OSTI]

ATLAS-Experiment Abbildung 50: Aufbau des ATLAS Detektors. 98 #12;ATLAS-Experiment ATLAS, LHC, zu unterst¨utzen. Die DESY Gruppe wurde formal im Juli 2006 in die ATLAS Kollaboration aufgenom Beteiligung an ATLAS erfolgt in enger Koope- ration mit einer Gruppe der Humboldt Universit¨at zu Berlin und

490

Arbeitspapiere des SFB 340 Bericht Nr. 132, September 1999  

E-Print Network [OSTI]

Arbeitspapiere des SFB 340 Bericht Nr. 132, September 1999 AN RSRL FORMALIZATION OF SERBO-CROATIAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 2. Clitic Placement in Serbo-Croatian . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178. Such is the case in Serbo-Croatian where prosodic constituency plays a role on a par with syntactic constituency

Toronto, University of

491

Stphane Couturier EVALUATION DES ERREURS DE CARTES DE  

E-Print Network [OSTI]

guide de Chan Laguna près de Calakmul, Campeche, Pedro Zamora et ses étudiants biologistes de l'Université Autonome de Campeche. Merci à l'ensemble des membres de l'équipe DART, qui m'ont infailliblement soutenu en

Paris-Sud XI, Université de

492

Diplomanden-und Doktorandenseminar des Instituts fr Informatik  

E-Print Network [OSTI]

Diplomanden- und Doktorandenseminar des Instituts für Informatik Six Sigma im Im üblichen Sinne wird Six Sigma insbesondere in Fertigungsindustrien wie zum Beispiel in der ist Six Sigma nicht nur eine Managementstrategie, die sich ausschlie?lich auf die Fertigungsindustrie

Zachmann, Gabriel

493

LE JOURNAL DE PHYSIQUE L'COULEMENT DES MTAUX (1)  

E-Print Network [OSTI]

exemple, les pales d'une turbine vapeur tournant grande vitesse; si ces pales s'allongent de quelques millimes elles risqueront de toucher le corps de l'appareil, avec un danger vident. Dans les turbines gaz employes danse les avions les plus rcents, le danger est de beaucoup augment cause des

Paris-Sud XI, Universit de

494

Simulations of the OzDES AGN Reverberation Mapping Project  

E-Print Network [OSTI]

As part of the OzDES spectroscopic survey we are carrying out a large scale reverberation mapping study of $\\sim$500 quasars over five years in the 30 deg$^2$ area of the Dark Energy Survey (DES) supernova fields. These quasars have redshifts ranging up to 4 and have apparent AB magnitudes between $16.8DES reverberation mapping campaign and its possible extensions. We expect to recover lags for $\\sim$35-45\\% of the quasars. AGN with shorter lags and greater variability are more likely to yield a lag, and objects with lags $\\lesssim$6 month or $\\sim$1 year are expected be recovered the most accurately. The baseline OzDES reverberation mapping campaign is predicted to produce an ...

King, Anthea L; Davis, Tamara M; Denney, K D; Kochanek, C S; Peterson, Bradley M; Skielboe, Andreas; Vestergaard, Marianne; Huff, Eric; Watson, Darach; Banerji, Manda; McMahon, Richard; Sharp, Rob; Lidman, C

2015-01-01T23:59:59.000Z

495

Dossier d'Habilitation Diriger des Recherches Jacques Dverchre  

E-Print Network [OSTI]

: Géométrie et modes d'évolution des rifts dans le temps et l'espace B. DEMARCHE: de la "sismo-géologie" à l la « sismo-géologie » dans un ensemble d'observations géophysiques et géologiques 3. Les propriétés

Déverchère, Jacques

496

Centre Europen de Recherche et d'Enseignement des  

E-Print Network [OSTI]

informations diffusées par l'Isotope Geology Laboratory de Boise (Idaho, USA) et par le Lamont-Doherty Earth informations sur des éléments couramment analysés avec la technique TIMS : strontium, néodyme, plomb, uranium

Paris-Sud XI, Université de

497

La ville comme lieu d'mergence de nouvelles formes d'urbanit. Cas des quartiers rsidentiels de la ville de Constantine  

E-Print Network [OSTI]

La ville comme lieu d'émergence de nouvelles formes d'urbanité. Cas des quartiers résidentiels de supprime le monopole des communes sur le patrimoine foncier et autorise la création des lotissements par l;Mais, si l'Etat ne dispose plus des droits absolus sur la gestion des sols, il restera toujours l

Boyer, Edmond

498

THE EFFECT OF THE PRE-DETONATION STELLAR INTERNAL VELOCITY PROFILE ON THE NUCLEOSYNTHETIC YIELDS IN TYPE Ia SUPERNOVA  

SciTech Connect (OSTI)

A common model of the explosion mechanism of Type Ia supernovae is based on a delayed detonation of a white dwarf. A variety of models differ primarily in the method by which the deflagration leads to a detonation. A common feature of the models, however, is that all of them involve the propagation of the detonation through a white dwarf that is either expanding or contracting, where the stellar internal velocity profile depends on both time and space. In this work, we investigate the effects of the pre-detonation stellar internal velocity profile and the post-detonation velocity of expansion on the production of {alpha}-particle nuclei, including {sup 56}Ni, which are the primary nuclei produced by the detonation wave. We perform one-dimensional hydrodynamic simulations of the explosion phase of the white dwarf for center and off-center detonations with five different stellar velocity profiles at the onset of the detonation. In order to follow the complex flows and to calculate the nucleosynthetic yields, approximately 10,000 tracer particles were added to every simulation. We observe two distinct post-detonation expansion phases: rarefaction and bulk expansion. Almost all the burning to {sup 56}Ni occurs only in the rarefaction phase, and its expansion timescale is influenced by pre-existing flow structure in the star, in particular by the pre-detonation stellar velocity profile. We find that the mass fractions of the {alpha}-particle nuclei, including {sup 56}Ni, are tight functions of the empirical physical parameter {rho}{sub up}/v{sub down}, where {rho}{sub up} is the mass density immediately upstream of the detonation wave front and v{sub down} is the velocity of the flow immediately downstream of the detonation wave front. We also find that v{sub down} depends on the pre-detonation flow velocity. We conclude that the properties of the pre-existing flow, in particular the internal stellar velocity profile, influence the final isotopic composition of burned matter produced by the detonation.

Kim, Yeunjin; Jordan, G. C. IV; Graziani, Carlo; Lamb, D. Q.; Truran, J. W. [Astronomy Department, University of Chicago, Chicago, IL 60637 (United States); Meyer, B. S. [Physics and Astronomy Department, Clemson University, Clemson, SC 29634 (United States)

2013-07-01T23:59:59.000Z

499

Neutron Diffraction Residual Strain Tensor Measurements Within The Phase IA Weld Mock-up Plate P-5  

SciTech Connect (OSTI)

Oak Ridge National Laboratory (ORNL) has worked with NRC and EPRI to apply neutron and X-ray diffraction methods to characterize the residual stresses in a number of dissimilar metal weld mockups and samples. The design of the Phase IA specimens aimed to enable stress measurements by several methods and computational modeling of the weld residual stresses. The partial groove in the 304L stainless steel plate was filled with weld beads of Alloy 82. A summary of the weld conditions for each plate is provided in Table 1. The plates were constrained along the long edges during and after welding by bolts with spring-loaded washers attached to the 1-inch thick Al backing plate. The purpose was to avoid stress relief due to bending of the welded stainless steel plate. The neutron diffraction method was one of the methods selected by EPRI for non-destructive through thickness strain and stress measurement. Four different plates (P-3 to P-6) were studied by neutron diffraction strain mapping, representing four different welding conditions. Through thickness neutron diffraction strain mappings at NRSF2 for the four plates and associated strain-free d-zero specimens involved measurement along seven lines across the weld and at six to seven depths. The mountings of each plate for neutron diffraction measurements were such that the diffraction vector was parallel to each of the three primary orthogonal directions of the plate: two in-plane directions, longitudinal and transverse, and the direction normal to the plate (shown in left figure within Table 1). From the three orthogonal strains for each location, the residual stresses along the three plate directions were calculated. The principal axes of the strain and stress tensors, however, need not necessarily align with the plate coordinate system. To explore this, plate P-5 was selected for examination of the possibility that the principal axes of strain are not along the sample coordinate system axes. If adequate data could be collected the goal would be to determine the strain tensor's orientation and magnitude of strain along each principle axis direction.

Hubbard, Camden R [ORNL

2011-09-01T23:59:59.000Z

500

TESTING MODELS OF INTRINSIC BRIGHTNESS VARIATIONS IN TYPE Ia SUPERNOVAE AND THEIR IMPACT ON MEASURING COSMOLOGICAL PARAMETERS  

SciTech Connect (OSTI)

For spectroscopically confirmed Type Ia supernovae we evaluate models of intrinsic brightness variations with detailed data/Monte Carlo comparisons of the dispersion in the following quantities: Hubble-diagram scatter, color difference (B - V - c) between the true B - V color and the fitted color (c) from the SALT-II light curve model, and photometric redshift residual. The data sample includes 251 ugriz light curves from the three-season Sloan Digital Sky Survey-II and 191 griz light curves from the Supernova Legacy Survey 3 year data release. We find that the simplest model of a wavelength-independent (coherent) scatter is not adequate, and that to describe the data the intrinsic-scatter model must have wavelength-dependent variations resulting in a {approx}0.02 mag scatter in B - V - c. Relatively weak constraints are obtained on the nature of intrinsic scatter because a variety of different models can reasonably describe this photometric data sample. We use Monte Carlo simulations to examine the standard approach of adding a coherent-scatter term in quadrature to the distance-modulus uncertainty in order to bring the reduced {chi}{sup 2} to unity when fitting a Hubble diagram. If the light curve fits include model uncertainties with the correct wavelength dependence of the scatter, we find that this approach is valid and that the bias on the dark energy equation-of-state parameter w is much smaller ({approx}0.001) than current systematic uncertainties. However, incorrect model uncertainties can lead to a significant bias on the distance moduli, with up to {approx}0.05 mag redshift-dependent variation. This bias is roughly reduced in half after applying a Malmquist bias correction. For the recent SNLS3 cosmology results, we estimate that this effect introduces an additional systematic uncertainty on w of {approx}0.02, well below the total uncertainty. This uncertainty depends on the choice of viable scatter models and the choice of supernova (SN) samples, and thus this small w-uncertainty is not guaranteed in future cosmology results. For example, the w-uncertainty for SDSS+SNLS (dropping the nearby SNe) increases to {approx}0.04.

Kessler, Richard; Frieman, Joshua A. [Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States)] [Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); Guy, Julien; Betoule, Marc; El-Hage, Patrick [Laboratoire de Physique Nucleaire et des Hautes Energies, UPMC Univ. Paris 6, UPD Univ. Paris 7, CNRS IN2P3, 4 place Jussieu, F-75005 Paris (France)] [Laboratoire de Physique Nucleaire et des Hautes Energies, UPMC Univ. Paris 6, UPD Univ. Paris 7, CNRS IN2P3, 4 place Jussieu, F-75005 Paris (France); Marriner, John [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States)] [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States); Brinkmann, Jon [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349 (United States)] [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349 (United States); Cinabro, David [Department of Physics, Wayne State University, Detroit, MI 48202 (United States)] [Department of Physics, Wayne State University, Detroit, MI 48202 (United States); Jha, Saurabh [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States)] [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Mosher, Jennifer [Department of Physics and Astronomy, University of Pennsylvania, 203 South 33rd Street, Philadelphia, PA 19104 (United States)] [Department of Physics and Astronomy, University of Pennsylvania, 203 South 33rd Street, Philadelphia, PA 19104 (United States); Schneider, Donald P., E-mail: kessler@kicp.uchicago.edu [Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States)

2013-02-10T23:59:59.000Z