Sample records for wf notes agn

  1. WF-NOTE-238

    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 MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500IIVasudhaSurface.Laboratory in Golden, Colorado6 March 21,

  2. Scour around an offshore wind turbine W.F. Louwersheimer

    E-Print Network [OSTI]

    Langendoen, Koen

    Scour around an offshore wind turbine MSc Thesis W.F. Louwersheimer January, 2007 Delft University of Technology Ballast Nedam Faculty of Civil Engineering Egmond Offshore Energy Section of Hydraulic Engineering #12;Scour around an offshore wind turbine Delft University of Technology Ballast Nedam - Egmond

  3. Infrared Surveys for AGN

    E-Print Network [OSTI]

    Harding E. Smith

    2002-03-06T23:59:59.000Z

    From the earliest extragalactic infrared studies AGN have shown themselves to be strong infrared sources and IR surveys have revealed new populations of AGN. I briefly review current motivations for AGN surveys in the infrared and results from previous IR surveys. The Luminous Infrared Galaxies, which in some cases house dust-enshrouded AGN, submillimeter surveys, and recent studies of the cosmic x-ray and infrared backgrounds suggest that there is a population of highly-obscured AGN at high redshift. ISO Surveys have begun to resolve the infrared background and may have detected this obscured AGN population. New infrared surveys, particularly the SIRTF Wide-area Infrared Extragalactic Legacy Survey (SWIRE), will detect this population and provide a platform for understanding the evolution of AGN, Starbursts and passively evolving galaxies in the context of large-scale structure and environment.

  4. Intrinsic AGN Absorption Lines

    E-Print Network [OSTI]

    Fred Hamann

    2000-06-12T23:59:59.000Z

    Strong absorption lines are common in rest-frame UV spectra of AGNs due to a variety of resonant transitions, for example the HI Lyman series lines (most notably Ly-alpha 1216) and high-ionization doublets like CIV 1549,1551. The lines are called ``intrinsic'' if the absorbing gas is physically related to the AGN, e.g. if the absorber resides broadly within the radius of the AGN's surrounding ``host'' galaxy. Intrinsic absorption lines are thus valuable probes of the kinematics, physical conditions and elemental abundances in the gas near AGNs. Studies of intrinsic absorbers have historically emphasized the broad absorption lines (BALs) in quasars. Today we recognize a wider variety of intrinsic lines in a wider range of objects. For example, we now know that Seyfert 1 galaxies (the less luminous cousins of quasars) have intrinsic absorption. We also realize that intrinsic lines can form in a range of AGN environments --- from the dynamic inner regions like the BALs, to the more quiescent outer host galaxies >10 kpc away. This article provides a brief introduction to current observational and theoretical work on intrinsic AGN absorbers.

  5. Gas phase reaction products during tungsten atomic layer deposition using WF6 and Si2H6

    E-Print Network [OSTI]

    George, Steven M.

    Gas phase reaction products during tungsten atomic layer deposition using WF6 and Si2H6 R. K; published 23 July 2004 The gas phase reaction products during tungsten W atomic layer deposition ALD using WF6 and Si2H6 were studied using quadrupole mass spectrometry. The gas phase reactions products were

  6. PRECIPITATION HARDENING IN ALUMINUM ALLOY 6022 W.F. Miao and D.E. Laughlin

    E-Print Network [OSTI]

    Laughlin, David E.

    ) (Accepted in revised form January 21, 1999) Introduction The use of aluminum alloys for automotive bodyPRECIPITATION HARDENING IN ALUMINUM ALLOY 6022 W.F. Miao and D.E. Laughlin Department of Materials behavior in aluminum alloy 6022. Experimental Procedure The composition of the 6022 alloy used

  7. 340 Nature Vol. 264 November 25 1976 IS W.-F ----I

    E-Print Network [OSTI]

    Shlyakhter, Ilya

    340 Nature Vol. 264 November 25 1976 IS W.-F ----I letters to nature Direct test of the constancy higher than Table 1 Comparison of upper bounds of the variation of nuclear constants Dyson, Davies discovered traces of ancient (1.8 x IO9 yr old) natural nuclear reactors in the uranium deposits of Oklo

  8. Extinction curves in AGN

    E-Print Network [OSTI]

    B. Czerny

    2006-12-16T23:59:59.000Z

    The presence of the dust in the circumnuclear region strongly affects our view of the nucleus itself. The effect is strong in type 2 objects but weaker effect is likely to be present in type 1 objects as well. In these objects a correction to the observed optical/UV spectrum must be done in order to recover the intrinsic spectrum of a nucleus. The approach based on the extinction curve is convenient for that purpose so significant effort has been recently done in order to determine the extinction curve for the circumnuclear material. It seems clear that the circumnuclear dust is different from the average properties of the dust in the Interstellar Medium in our galaxy: the well known 2175 A feature is weak or absent in AGN nuclear dust, and the extinction curve at shorter wavelength does not seem to be rising as steeply. The circumnuclear dust is therefore more similar to SMC dust, or more likely, to the dust in very dense molecular clouds in our Galaxy. However, the exact shape of the extinction curve in the far UV is still a matter of debate, and various effects are difficult to disentangle.

  9. Google:[Leonid Zakharov] http://w3.pppl.gov/~zakharov LiWF & Spherical Tokamaks

    E-Print Network [OSTI]

    Zakharov, Leonid E.

    , ASIPP July 09, 2008, Hefei, Ahnui, China 1 This work is supported by US DoE contract No. DE­AC020­76­CHO, was introduced. In the LiWF regime the temperature pedestal is equal to core temperature. At the same time 11111111 1111 1111 1111 11111111 Plasma core Confinement zone Free flow zone ion ion core-edge electron

  10. Chemical composition and RT[sub NDT] determinations for Midland weld WF-70

    SciTech Connect (OSTI)

    Nanstad, R.K.; McCabe, D.E.; Swain, R.L.; Miller, M.K. (Oak Ridge National Lab., TN (United States))

    1992-12-01T23:59:59.000Z

    The Heavy-Section Steal Irradiation Program Tenth Irradiation Series has the objective to investigate the affects of radiation on the fracture toughness of the low-upper-shelf submerged-arc welds (B W designation WF-70) in the reactor pressure vessel of the canceled Midland Unit 1 nuclear plant. This report discusses determination of variations in chemical composition And reference temperature (RT[sub NDT]) throughout the welds. Specimens were machined from different sections and through thickness locations in both the beltline and nozzle course welds. The nil-ductility transition temperatures ranged from [minus]40 to [minus]60[degrees]C ([minus]40 and [minus]76[degrees]F) while the RT[sub NDT]S, controlled by the Charpy behavior, varied from [minus]20 to 37[degrees]C ([minus]4 to 99[degrees]F). The upper-shelf energies varied from 77 to 108 J (57 to 80 ft-lb). The combined data revealed a mean 41-J (30-ft-lb) temperature of [minus]8[degrees]C (17[degrees]F) with a mean upper-shelf energy of 88 J (65 ft-lb). The copper contents range from 0.21 to 0.34 wt % in the beltline weld and from 0.37 to 0.46 wt % in the nozzle course weld. Atom probe field ion microscope analyses indicated substantial depletion of copper in the matrix but no evidence of copper clustering. Statistical analyses of the Charpy and chemical composition results as well as interpretation of the ASME procedures for RT[sub NDT] determination are discussed.

  11. AGN Heating through Cavities and Shocks

    E-Print Network [OSTI]

    P. E. J. Nulsen; C. Jones; W. R. Forman; L. P. David; B. R. McNamara; D. A. Rafferty; L. Birzan; M. W. Wise

    2006-11-04T23:59:59.000Z

    Three comments are made on AGN heating of cooling flows. A simple physical argument is used to show that the enthalpy of a buoyant radio lobe is converted to heat in its wake. Thus, a significant part of ``cavity'' enthalpy is likely to end up as heat. Second, the properties of the repeated weak shocks in M87 are used to argue that they can plausibly prevent gas close to the AGN from cooling. As the most significant heating mechanism at work closest to the AGN, shock heating probably plays a critical role in the feedback mechanism. Third, results are presented from a survey of AGN heating rates in nearby giant elliptical galaxies. With inactive systems included, the overall AGN heating rate is reasonably well matched to the total cooling rate for the sample. Thus, intermittent AGN outbursts are energetically capable of preventing the hot atmospheres of these galaxies from cooling and forming stars.

  12. The 60-month all-sky BAT Survey of AGN and the Anisotropy of Nearby AGN

    SciTech Connect (OSTI)

    Ajello, M.; /KIPAC, Menlo Park; Alexander, D.M.; /Durham U.; Greiner, J.; /Garching, Max Planck Inst., MPE; Madejski, G.M.; /KIPAC, Menlo Park; Gehrels, N.; /NASA, Goddard; Burlon, D.; /Garching, Max Planck Inst., MPE

    2012-04-02T23:59:59.000Z

    Surveys above 10 keV represent one of the the best resources to provide an unbiased census of the population of Active Galactic Nuclei (AGN). We present the results of 60 months of observation of the hard X-ray sky with Swift/BAT. In this timeframe, BAT detected (in the 15-55 keV band) 720 sources in an all-sky survey of which 428 are associated with AGN, most of which are nearby. Our sample has negligible incompleteness and statistics a factor of {approx}2 larger over similarly complete sets of AGN. Our sample contains (at least) 15 bona-fide Compton-thick AGN and 3 likely candidates. Compton-thick AGN represent a {approx}5% of AGN samples detected above 15 keV. We use the BAT dataset to refine the determination of the LogN-LogS of AGN which is extremely important, now that NuSTAR prepares for launch, towards assessing the AGN contribution to the cosmic X-ray background. We show that the LogN-LogS of AGN selected above 10 keV is now established to a {approx}10% precision. We derive the luminosity function of Compton-thick AGN and measure a space density of 7.9{sub -2.9}{sup +4.1} x 10{sup -5} Mpc{sup -3} for objects with a de-absorbed luminosity larger than 2 x 10{sup 42} erg s{sup -1}. As the BAT AGN are all mostly local, they allow us to investigate the spatial distribution of AGN in the nearby Universe regardless of absorption. We find concentrations of AGN that coincide spatially with the largest congregations of matter in the local ({le} 85 Mpc) Universe. There is some evidence that the fraction of Seyfert 2 objects is larger than average in the direction of these dense regions.

  13. Feedback in AGN heating of galaxy clusters

    E-Print Network [OSTI]

    M. Hoeft; M. Brueggen

    2004-05-21T23:59:59.000Z

    One of the challenges that models of AGN heating of the intracluster medium (ICM) face, is the question how the mechanical luminosity of the AGN is tuned to the radiative losses of the ICM. Here we implement a simple 1D model of a feedback mechanism that links the luminosity of the AGN to the accretion rate. We demonstrate how this simple feedback mechanism leads to a quasi-steady state for a broad range of parameters. Moreover, within this feedback model, we investigate the effect of thermal conduction and find that its relative importance depends strongly on the cluster mass.

  14. AGN Activity in Giant LSB Galaxies

    E-Print Network [OSTI]

    James Schombert

    1998-06-30T23:59:59.000Z

    A search of large, HI-rich disk galaxies finds a significantly higher fraction of low luminosity AGN signatures compared to other late-type galaxies. Approximately half of the galaxies selected in this sample have AGN-like behavior in their cores, the rest have HII nuclei resulting from simple star formation. Since AGN behavior is not evident in all the sample galaxies, which where selected by high gas mass, we speculate that it is the fuel flow rate that is the common feature between late-type LSB disks and other active nuclear galaxies.

  15. Some Comments related to AGN Radio Loudness

    E-Print Network [OSTI]

    Ari Laor

    2003-12-24T23:59:59.000Z

    The bimodality of the AGN radio loudness distribution, and the relation of radio loudness and black hole mass were recently disputed. A closer look at the existing data suggests possible resolutions of these disputes, as further described below.

  16. Gamma-ray emitting AGN and GLAST

    E-Print Network [OSTI]

    P. Padovani

    2007-04-02T23:59:59.000Z

    I describe the different classes of Active Galactic Nuclei (AGN) and the basic tenets of unified schemes. I then review the properties of the extragalactic sources detected in the GeV and TeV bands, showing that the vast majority of them belong to the very rare blazar class. I further discuss the kind of AGN GLAST is likely to detect, making some predictions going from the obvious to the likely, all the way to the less probable.

  17. Peer Reviewed Publications 7 October 2011 41 Chilson, PB, WF Frick, JF Kelly, KW Howard, RP Larkin, RH Diehl, JK Westbrook, TA

    E-Print Network [OSTI]

    Kelly, Jeff

    Peer Reviewed Publications 7 October 2011 41 Chilson, PB, WF Frick, JF Kelly, KW Howard, RP Larkin, RH Diehl, JK Westbrook, TA Kelly, TH Kunz. In Press. Partly cloudy with a chance of migration, MS Bowlin, PB Chilson, RH Diehl, RW Fléron, P Hartl, R Kays, JF Kelly, WD Robinson, M Wikelski. 2011

  18. agn iii spectra: Topics by E-print Network

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

    luminous AGN within the redshift interval 1.7 < z < 1.9. This result implies that mid-infrared source counts at high redshift are dominated by AGN for f(24micron) > 1.0 mJy. D....

  19. The lifecycle of powerful AGN outflows

    E-Print Network [OSTI]

    Christian R. Kaiser; Philip N. Best

    2006-11-07T23:59:59.000Z

    During the course of this conference, much evidence was presented that points to an intimate connection between the energetic outflows driven by AGN and the energy budget and quite possibly also the evolution of their gaseous environments. However, it is still not clear if and how the AGN activity is triggered by the cooling gas, how long the activity lasts for and how these effects give rise to the observed distribution of morphologies of the outflows. In this contribution we concentrate on the high radio luminosity end of the AGN population. While most of the heating of the environmental gas may be due to less luminous and energetic outflows, these more powerful objects have a very profound influence on their surroundings. We will describe a simple model for powerful radio galaxies and radio-loud quasars that explains the dichotomy of their large-scale radio morphologies as well as their radio luminosity function.

  20. The lifecycle of powerful AGN outflows

    E-Print Network [OSTI]

    Kaiser, C R; Kaiser, Christian R.; Best, Philip N.

    2006-01-01T23:59:59.000Z

    During the course of this conference, much evidence was presented that points to an intimate connection between the energetic outflows driven by AGN and the energy budget and quite possibly also the evolution of their gaseous environments. However, it is still not clear if and how the AGN activity is triggered by the cooling gas, how long the activity lasts for and how these effects give rise to the observed distribution of morphologies of the outflows. In this contribution we concentrate on the high radio luminosity end of the AGN population. While most of the heating of the environmental gas may be due to less luminous and energetic outflows, these more powerful objects have a very profound influence on their surroundings. We will describe a simple model for powerful radio galaxies and radio-loud quasars that explains the dichotomy of their large-scale radio morphologies as well as their radio luminosity function.

  1. Properties of chemical vapor deposited tungsten silicide films using reaction of WF/sub 6/ and Si/sub 2/H/sub 6/

    SciTech Connect (OSTI)

    Shioya, Y.; Ikegami, K.; Kobayashi, I.; Maeda, M.

    1987-05-01T23:59:59.000Z

    Tungsten silicide films were formed by the chemical vapor deposition method using the reaction WF/sub 6/ and Si/sub 2/H/sub 6/. The deposition rate, resistivity, composition, stress, crystal structure, and content of impurities were studied and compared with tungsten silicide films deposited by reaction of WF/sub 6/ and SiH/sub 4/. The tungsten silicide films made using Si/sub 2/H/sub 6/ have a higher deposition rate and higher Si concentration than those made by using SiH/sub 4/ at the same substrate temperature. For these reasons, the tungsten silicide films made by using Si/sub 2/H/sub 6/ were found to have a resistivity that is a little higher and, after annealing, a stress that is smaller than that made by SiH/sub 4/.

  2. The Blast Wave Model for AGN Feedback: Effects on AGN Obscuration

    E-Print Network [OSTI]

    N. Menci; F. Fiore; S. Puccetti; A. Cavaliere

    2008-07-01T23:59:59.000Z

    We compute the effect of the galactic absorption on AGN emission in a cosmological context by including a physical model for AGN feeding and feedback in a semi-analytic model of galaxy formation. This is based on galaxy interactions as triggers for AGN accretion, and on expanding blast waves as a mechanism to propagate outwards the AGN energy injected into the interstellar medium at the center of galaxies. We first test our model against the observed number density of AGNs with different intrinsic luminosity as a function of redshift. The model yields a ''downsizing'' behavior in close agreement with the observed one for z2 and L_X 10^{22} cm^{-2} decreases with luminosity for z<1; in addition, the total (integrated over luminosity) absorbed fraction increases with redshift up to z around 2, and saturates to the value around 0.8 at higher redshifts. Finally, we predict the luminosity dependence of the absorbed fraction of AGNs with L_X< 3 10^{44} erg/s to weaken with increasing redshift. We compare our results with recent observations, and discuss their implications in the context of cosmological models of galaxy formation.

  3. Investigating a model of optimised AGN feedback

    E-Print Network [OSTI]

    Edward C. D. Pope

    2011-03-02T23:59:59.000Z

    Feedback heating from AGN in massive galaxies and galaxy clusters can be thought of as a naturally occurring control system which plays a significant role in regulating both star formation rates and the X-ray luminosity of the surrounding hot gas. In the simplest case, negative feedback can be viewed as a system response that is `optimised' to minimise deviations from equilibrium, such that the system rapidly evolves towards a steady state. However, a general solution of this form appears to be incompatible with radio observations which indicate intermittent AGN outbursts. Here, we explore an energetically favourable scenario in which feedback is required to both balance X-ray gas cooling, and minimise the sum of the energy radiated by the gas and the energy injected by the AGN. This specification is equivalent to ensuring that AGN heating balances the X-ray gas cooling with minimum black hole growth. It is shown that minimum energy heating occurs in discrete events, and not at a continuous, constant level. Furthermore, systems with stronger feedback experience proportionally more powerful heating events, but correspondingly smaller duty cycles. Interpreting observations from this perspective would imply that stronger feedback occurs in less massive objects - elliptical galaxies, rather than galaxy clusters. One direct consequence of this effect would be that AGN heating events are sufficiently powerful to expel hot gas from the gravitational potential of a galaxy, but not a galaxy cluster, which is consistent with theoretical explanations for the steepening of the L_X-T relation at temperatures below 1-2 keV.

  4. Gas-phase transport of WF6 through annular nanopipes in TiN during chemical vapor deposition of W on TiN/Ti/SiO2 structures for integrated

    E-Print Network [OSTI]

    Allen, Leslie H.

    Gas-phase transport of WF6 through annular nanopipes in TiN during chemical vapor deposition of W through the 106-nm-thick TiN film. W piles up at the TiN/Ti interface, while F rapidly saturates the TiN-sectional and scanning transmission electron microscopy analyses demonstrate that WF6 penetrates into the TiN layer

  5. Blue Note

    ScienceCinema (OSTI)

    Murray Gibson

    2010-01-08T23:59:59.000Z

    Argonne's Murray Gibson is a physicist whose life's work includes finding patterns among atoms. The love of distinguishing patterns also drives Gibson as a musician and Blues enthusiast."Blue" notes are very harmonic notes that are missing from the equal temperament scale.The techniques of piano blues and jazz represent the melding of African and Western music into something totally new and exciting.

  6. Blue Note

    SciTech Connect (OSTI)

    Murray Gibson

    2007-04-27T23:59:59.000Z

    Argonne's Murray Gibson is a physicist whose life's work includes finding patterns among atoms. The love of distinguishing patterns also drives Gibson as a musician and Blues enthusiast."Blue" notes are very harmonic notes that are missing from the equal temperament scale.The techniques of piano blues and jazz represent the melding of African and Western music into something totally new and exciting.

  7. On The Nature of Low Luminosity Narrow Line AGN

    E-Print Network [OSTI]

    Ari Laor

    2003-02-26T23:59:59.000Z

    There is clear observational evidence that some narrow line (type 2) AGN have a hidden broad line region (BLR), and are thus intrinsically broad line (type 1) AGN. Does this AGN unification applies for all type 2 AGN? Indirect arguments suggest that some "true" type 2 AGN, i.e. AGN having no obscured BLR do exist, but it is not clear why the BLR is missing in these AGN. Here we point out a possible natural explanation. The observed radius-luminosity relation for the BLR implies an increasing line width with decreasing luminosity for a given black hole mass (Mbh). In addition, there appears to be an upper limit to the observed width of broad emission lines in AGN of Delta v_max~25,000 km/s, which may reflect a physical limit above which the BLR may not be able to survive. Thus, at a low enough luminosity the BLR radius shrinks below the Delta v_max radius, leaving no region where the BLR can exist, although the AGN may remain otherwise `normal'. The implied minimum bolometric luminosity required to sustain a BLR with Delta v<25,000 km/s is L_min~10^{41.8}(Mbh}/10^8M_sun)^2. All AGN with LAGN, i.e. narrow line AGN without a hidden BLR. Predictions for the true nature of low luminosity AGN in two samples of nearby galaxies are provided. These can be used to test the above L_min conjecture, and the predictions of other models for the size and origin of the BLR.

  8. wf01.xls

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    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) " ,"ClickPipelines AboutDecemberSteam Coal Import CostsLiquids Reserve Class3a.86,77,1996 N| Short-Term9-00

  9. AGES: THE AGN AND GALAXY EVOLUTION SURVEY

    SciTech Connect (OSTI)

    Kochanek, C. S. [Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States); Eisenstein, D. J.; Caldwell, N.; Jones, C.; Murray, S. S.; Forman, W. R.; Green, P. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Cool, R. J. [Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544 (United States); Assef, R. J.; Eisenhardt, P.; Stern, D. [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States); Jannuzi, B. T.; Dey, A. [NOAO, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Brown, M. J. I. [School of Physics, Monash University, Clayton, Victoria 3800 (Australia); Gonzalez, A. H. [Department of Astronomy, Bryant Space Science Center, University of Florida, Gainesville, FL 32611 (United States)

    2012-05-01T23:59:59.000Z

    The AGN and Galaxy Evolution Survey (AGES) is a redshift survey covering, in its standard fields, 7.7 deg{sup 2} of the Booetes field of the NOAO Deep Wide-Field Survey. The final sample consists of 23,745 redshifts. There are well-defined galaxy samples in 10 bands (the B{sub W} , R, I, J, K, IRAC 3.6, 4.5, 5.8, and 8.0 {mu}m, and MIPS 24 {mu}m bands) to a limiting magnitude of I < 20 mag for spectroscopy. For these galaxies, we obtained 18,163 redshifts from a sample of 35,200 galaxies, where random sparse sampling was used to define statistically complete sub-samples in all 10 photometric bands. The median galaxy redshift is 0.31, and 90% of the redshifts are in the range 0.085 < z < 0.66. Active galactic nuclei (AGNs) were selected as radio, X-ray, IRAC mid-IR, and MIPS 24 {mu}m sources to fainter limiting magnitudes (I < 22.5 mag for point sources). Redshifts were obtained for 4764 quasars and galaxies with AGN signatures, with 2926, 1718, 605, 119, and 13 above redshifts of 0.5, 1, 2, 3, and 4, respectively. We detail all the AGES selection procedures and present the complete spectroscopic redshift catalogs and spectral energy distribution decompositions. Photometric redshift estimates are provided for all sources in the AGES samples.

  10. The X-ray background and the evolution of AGN

    E-Print Network [OSTI]

    Fulvio Pompilio; Fabio La Franca; Giorgio Matt

    1999-09-23T23:59:59.000Z

    We discuss the constraints on the AGN evolution from the cosmic X-ray background and source counts. A synthesis model to fit the X-ray background is presented. In the model, the spectrum of type 2 AGN has been modeled including Compton down--scattering within the absorbing material. Besides, we introduced a dependence on redshift of the relative number of obscured sources and found a decrease of the fraction of type 2 AGN at redshifts larger than 2.

  11. Ultra-fast outflows (aka UFOs) from AGNs and QSOs

    E-Print Network [OSTI]

    Cappi, M; Giustini, M

    2013-01-01T23:59:59.000Z

    During the last decade, strong observational evidence has been accumulated for the existence of massive, high velocity winds/outflows (aka Ultra Fast Outflows, UFOs) in nearby AGNs and in more distant quasars. Here we briefly review some of the most recent developments in this field and discuss the relevance of UFOs for both understanding the physics of accretion disk winds in AGNs, and for quantifying the global amount of AGN feedback on the surrounding medium.

  12. E-Print Network 3.0 - agn anisotropic properties Sample Search...

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

    Modes and Feedback Processes in Summary: ;Contents Brief review of AGN physics & phenomenology Nuclear X-ray emission in radio-loud AGN... : accretion flow or jet? The...

  13. UHECRs from the Radio Lobes of AGNs

    E-Print Network [OSTI]

    F. Fraschetti; F. Melia

    2008-10-07T23:59:59.000Z

    We report a stochastic mechanism of particle acceleration from first principles in an environment having properties like those of Radio Lobes in AGNs. We show that energies $\\sim 10^{20}$ eV are reached in $\\sim 10^6$ years for protons. Our results reopen the question regarding the nature of the high-energy cutoff in the observed spectrum: whether it is due solely to propagation effects, or whether it is also affected by the maximum energy permitted by the acceleration process itself.

  14. The Spatial Clustering of ROSAT All-Sky Survey AGNs III. Expanded Sample and Comparison with Optical AGNs

    E-Print Network [OSTI]

    Krumpe, Mirko; Coil, Alison L; Aceves, Hector

    2011-01-01T23:59:59.000Z

    This is the third paper in a series that reports on our investigation of the clustering properties of AGNs identified in the ROSAT All-Sky Survey (RASS) and Sloan Digital Sky Survey (SDSS). In this paper, we extend the redshift range to 0.07AGNs with and without radio detections as well as for X-ray selected narrow-line RASS/SDSS AGNs. We measure the clustering amplitude through cross-correlation functions (CCFs) with SDSS galaxies and derive the bias by applying a halo occupation distribution (HOD) model directly to the CCFs. We find no statistically convincing difference in the clustering of X-ray and optically-selected broad-line AGNs, as well as with samples in which radio-detected AGNs are excluded. This is in contrast to low redshift optically-selected narrow-line AGNs, where radio-loud AGNs are found in more massive halos than optical AGNs without a radio-detection. The typical dark matter halo mass...

  15. EDITORS NOTE:

    Energy Savers [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 Inspector General Office of Audit ServicesMirantPartners, Inc. | DepartmentEA-98-G- JuneEDITORS NOTE: This

  16. Spectral decomposition of broad-line agns and host galaxies

    SciTech Connect (OSTI)

    Vanden Berk, Daniel E.; Shen, Jiajian; /Penn State U., Astron. Astrophys.; Yip, Ching-Wa; /Pittsburgh U.; Schneider, Donald P.; /Penn State U., Astron. Astrophys.; Connolly,; /Pittsburgh U.; Burton, Ross E.; /Pittsburgh U. /Case Western Reserve U.; Jester, Sebastian; /Fermilab; Hall, Patrick B.; /York U., Canada; Szalay, Alex S.; /Johns Hopkins; Brinkmann, John; /Apache Point Observ.

    2005-09-01T23:59:59.000Z

    Using an eigenspectrum decomposition technique, we separate the host galaxy from the broad line active galactic nucleus (AGN) in a set of 4666 spectra from the Sloan Digital Sky Survey (SDSS), from redshifts near zero up to about 0.75. The decomposition technique uses separate sets of galaxy and quasar eigenspectra to efficiently and reliably separate the AGN and host spectroscopic components. The technique accurately reproduces the host galaxy spectrum, its contributing fraction, and its classification. We show how the accuracy of the decomposition depends upon S/N, host galaxy fraction, and the galaxy class. Based on the eigencoefficients, the sample of SDSS broad-line AGN host galaxies spans a wide range of spectral types, but the distribution differs significantly from inactive galaxies. In particular, post-starburst activity appears to be much more common among AGN host galaxies. The luminosities of the hosts are much higher than expected for normal early-type galaxies, and their colors become increasingly bluer than early-type galaxies with increasing host luminosity. Most of the AGNs with detected hosts are emitting at between 1% and 10% of their estimated Eddington luminosities, but the sensitivity of the technique usually does not extend to the Eddington limit. There are mild correlations among the AGN and host galaxy eigencoefficients, possibly indicating a link between recent star formation and the onset of AGN activity. The catalog of spectral reconstruction parameters is available as an electronic table.

  17. Measuring AGN Feedback with the Sunyaev-Zel'dovich Effect

    E-Print Network [OSTI]

    Scannapieco, Evan; Couchman, H M P

    2007-01-01T23:59:59.000Z

    One of the most important and poorly-understood issues in structure formation is the role of outflows driven by active galactic nuclei (AGN). Using large-scale cosmological simulations, we compute the impact of such outflows on the small-scale distribution of the cosmic microwave background (CMB). Like gravitationally-heated structures, AGN outflows induce CMB distortions both through thermal motions and peculiar velocities, by processes known as the thermal and kinetic Sunyaev-Zel'dovich (SZ) effects, respectively. For AGN outflows the thermal SZ effect is dominant, doubling the angular power spectrum on arcminute scales. But the most distinct imprint of AGN feedback is a substantial increase in the thermal SZ distortions around elliptical galaxies, post-starburst ellipticals, and quasars, which is linearly proportional to the outflow energy. While point source subtraction is difficult for quasars, we show that by appropriately stacking microwave measurements around early-type galaxies, the new generation of...

  18. agn snapshot survey: Topics by E-print Network

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

    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 Infrared Surveys for AGN CERN Preprints Summary: From the earliest extragalactic infrared...

  19. agn feedback observations: Topics by E-print Network

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

    Christopher S; Heinz, Sebastian 2008-01-01 18 Feeding Versus Feedback in AGNs from Near-Infrared IFU Observations: The Case of Mrk79 CERN Preprints Summary: We have mapped the...

  20. agn feedback vlt: Topics by E-print Network

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

    Field South using X-ray and radio data for sample selection. Combined with archival far infrared data as a reliable tracer of star formation activity in the AGN host galaxies, we...

  1. agn monitoring project: Topics by E-print Network

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

    Yuzuru Yoshii 2008-10-16 6 The Lick AGN Monitoring Project: Velocity-Delay Maps from the Maximum-Entropy Method for Arp 151 CERN Preprints Summary: We present velocity-delay maps...

  2. A toroidal black hole for the AGN phenomenon

    E-Print Network [OSTI]

    Fulvio Pompilio; S. M. Harun-or-Rashid; Matts Roos

    2000-08-30T23:59:59.000Z

    A new approach to the study of the AGN phenomenon is proposed, in which the nucleus activity is related to the metric of the inner massive black hole. The possibility of a Toroidal Black Hole (TBH), in contrast to the usual Spherical Black Hole (SBH), is discussed as a powerful tool in understanding AGN related phenomena, such as the energetics, the production of jets and the acceleration of particles, the shape of the magnetic field and the lifetime of nucleus activity.

  3. Clustering Measurements of broad-line AGNs: Review and Future

    E-Print Network [OSTI]

    Krumpe, Mirko; Coil, Alison L

    2013-01-01T23:59:59.000Z

    Despite substantial effort, the precise physical processes that lead to the growth of super-massive black holes in the centers of galaxies are still not well understood. These phases of black hole growth are thought to be of key importance in understanding galaxy evolution. Forthcoming missions such as eROSITA, HETDEX, eBOSS, BigBOSS, LSST, and Pan-STARRS will compile by far the largest ever Active Galactic Nuclei (AGNs) catalogs which will allow us to measure the spatial distribution of AGNs in the universe with unprecedented accuracy. For the first time, AGN clustering measurements will reach a level of precision that will not only allow for an alternative approach to answering open questions in AGN/galaxy co-evolution but will open a new frontier, allowing us to precisely determine cosmological parameters. This paper reviews the large-scale clustering measurements of broad line AGNs. We summarize how clustering is measured and which constraints can be derived from AGN clustering measurements, we discuss re...

  4. SUPERNOVAE AND AGN DRIVEN GALACTIC OUTFLOWS

    SciTech Connect (OSTI)

    Sharma, Mahavir; Nath, Biman B., E-mail: mahavir@rri.res.in, E-mail: biman@rri.res.in [Raman Research Institute, Sadashiva Nagar, Bangalore 560080 (India)

    2013-01-20T23:59:59.000Z

    We present analytical solutions for winds from galaxies with a Navarro-Frank-White (NFW) dark matter halo. We consider winds driven by energy and mass injection from multiple supernovae (SNe), as well as momentum injection due to radiation from a central black hole. We find that the wind dynamics depends on three velocity scales: (1) v{sub *}{approx}( E-dot / 2 M-dot ){sup 1/2} describes the effect of starburst activity, with E-dot and M-dot as energy and mass injection rate in a central region of radius R; (2) v {sub .} {approx} (GM {sub .}/2R){sup 1/2} for the effect of a central black hole of mass M {sub .} on gas at distance R; and (3) v{sub s}=(GM{sub h} / 2Cr{sub s}){sup 1/2}, which is closely related to the circular speed (v{sub c} ) for an NFW halo, where r{sub s} is the halo scale radius and C is a function of the halo concentration parameter. Our generalized formalism, in which we treat both energy and momentum injection from starbursts and radiation from the central active galactic nucleus (AGN), allows us to estimate the wind terminal speed to be (4v {sup 2} {sub *} + 6({Gamma} - 1)v {sub .} {sup 2} - 4v {sup 2} {sub s}){sup 1/2}, where {Gamma} is the ratio of force due to radiation pressure to gravity of the central black hole. Our dynamical model also predicts the following: (1) winds from quiescent star-forming galaxies cannot escape from 10{sup 11.5} M {sub Sun} {<=} M{sub h} {<=} 10{sup 12.5} M {sub Sun} galaxies; (2) circumgalactic gas at large distances from galaxies should be present for galaxies in this mass range; (3) for an escaping wind, the wind speed in low- to intermediate-mass galaxies is {approx}400-1000 km s{sup -1}, consistent with observed X-ray temperatures; and (4) winds from massive galaxies with AGNs at Eddington limit have speeds {approx}> 1000 km s{sup -1}. We also find that the ratio [2v {sup 2} {sub *} - (1 - {Gamma})v {sub .} {sup 2}]/v {sup 2} {sub c} dictates the amount of gas lost through winds. Used in conjunction with an appropriate relation between M {sub .} and M{sub h} and an appropriate opacity of dust grains in infrared (K band), this ratio has the attractive property of being minimum at a certain halo mass scale (M{sub h} {approx} 10{sup 12}-10{sup 12.5} M {sub Sun }) that signifies the crossover of AGN domination in outflow properties from starburst activity at lower masses. We find that stellar mass for massive galaxies scales as M {sub *}{proportional_to}M {sup 0.26} {sub h}, and for low-mass galaxies, M {sub *}{proportional_to}M {sup 5/3} {sub h}.

  5. Measuring AGN Feedback with the Sunyaev-Zel'dovich Effect

    E-Print Network [OSTI]

    Evan Scannapieco; Robert J. Thacker; H. M. P. Couchman

    2007-09-06T23:59:59.000Z

    One of the most important and poorly-understood issues in structure formation is the role of outflows driven by active galactic nuclei (AGN). Using large-scale cosmological simulations, we compute the impact of such outflows on the small-scale distribution of the cosmic microwave background (CMB). Like gravitationally-heated structures, AGN outflows induce CMB distortions both through thermal motions and peculiar velocities, by processes known as the thermal and kinetic Sunyaev-Zel'dovich (SZ) effects, respectively. For AGN outflows the thermal SZ effect is dominant, doubling the angular power spectrum on arcminute scales. But the most distinct imprint of AGN feedback is a substantial increase in the thermal SZ distortions around elliptical galaxies, post-starburst ellipticals, and quasars, which is linearly proportional to the outflow energy. While point source subtraction is difficult for quasars, we show that by appropriately stacking microwave measurements around early-type galaxies, the new generation of small-scale microwave telescopes will be able to directly measure AGN feedback at the level important for current theoretical models.

  6. Diagnostics of Plasma Properties in Broad Line Region of AGNs

    E-Print Network [OSTI]

    Luka C. Popovic

    2003-09-23T23:59:59.000Z

    The Boltzmann-plot (BPT) method for laboratory plasma diagnostic was used for a quick estimate of physical conditions in the Broad Line Region (BLR) of 14 Active Galactic Nuclei (AGNs). For the BLR of nine AGNs, where PLTE exist, the estimated electron temperature are in the range T $\\sim$ 130000K - 37000K are in good agreement with previous estimates. The estimated electron densities depend on the opacity of the emitting plasma in the BLR, and they are in range from $10^9\\rm cm^{-3}$ (for optically thick plasma) to $10^{14}\\rm cm^{-3}$ (for optically thin plasma). Although an alternative of PLTE in some AGNs may be very high intrinsic reddening effect, this method may be used for fast insight into physical processes in the BLR prior to applying more sophisticated physical models.

  7. The role of an accretion disk in AGN variability

    E-Print Network [OSTI]

    B. Czerny

    2004-09-10T23:59:59.000Z

    Optically thick accretion disks are considered to be important ingredients of luminous AGN. The claim of their existence is well supported by observations and recent years brought some progress in understanding of their dynamics. However, the role of accretion disks in optical/UV/X-ray variability of AGN is not quite clear. Most probably, in short timescales the disk reprocesses the variable X-ray flux but at longer timescales the variations of the disk structure lead directly to optical/UV variations as well as affect, or even create, the X-ray variability pattern. We urgently need a considerable progress in time-dependent disk models to close the gap between the theory and the stream of data coming from the AGN monitoring.

  8. Radio-AGN Feedback: When the Little Ones were Monsters

    E-Print Network [OSTI]

    Williams, W L

    2015-01-01T23:59:59.000Z

    We present a study of the evolution of the fraction of radio-loud active galactic nuclei (AGN) as a function of their host stellar mass. We make use of two samples of radio galaxies: one in the local universe, $0.01 10^{24}$ W/Hz at z ~ 1-2 while the radio-loud fraction for higher mass galaxies ($M_* > 10^{11.25}$ M$_{\\odot}$) remains the same. We argue that this increase is driven largely by the increase in cold or radiative mode accretion with increasing cold gas supply at earlier epochs. The increasing population of low mass Radio-Loud AGN can thus explain the upturn in the Radio Luminosity Function (RLF) at high redshift which is important for understanding the impact of AGN feedback in galaxy evolution.

  9. High energy cosmic rays, gamma rays and neutrinos from AGN

    E-Print Network [OSTI]

    Yukio Tomozawa

    2008-02-03T23:59:59.000Z

    The author reviews a model for the emission of high energy cosmic rays, gamma-rays and neutrinos from AGN (Active Galactic Nuclei) that he has proposed since 1985. Further discussion of the knee energy phenomenon of the cosmic ray energy spectrum requires the existence of a heavy particle with mass in the knee energy range. A possible method of detecting such a particle in the Pierre Auger Project is suggested. Also presented is a relation between the spectra of neutrinos and gamma-rays emitted from AGN. This relation can be tested by high energy neutrino detectors such as ICECUBE, the Mediterranean Sea Detector and possibly by the Pierre Auger Project.

  10. Average Fe K-alpha emission from distant AGN

    E-Print Network [OSTI]

    Corral, A; Carrera, F J; Barcons, X; Mateos, S; Ebrero, J; Krumpe, M; Schwope, A; Tedds, J A; Watson, M G

    2008-01-01T23:59:59.000Z

    One of the most important parameters in the XRB (X-ray background) synthesis models is the average efficiency of accretion onto SMBH (super-massive black holes). This can be inferred from the shape of broad relativistic Fe lines seen in X-ray spectra of AGN (active galactic nuclei). Several studies have tried to measure the mean Fe emission properties of AGN at different depths with very different results. We compute the mean Fe emission from a large and representative sample of AGN X-ray spectra up to redshift ~ 3.5. We developed a method of computing the rest-frame X-ray average spectrum and applied it to a large sample (more than 600 objects) of type 1 AGN from two complementary medium sensitivity surveys based on XMM-Newton data, the AXIS and XWAS samples. This method makes use of medium-to-low quality spectra without needing to fit complex models to the individual spectra but with computing a mean spectrum for the whole sample. Extensive quality tests were performed by comparing real to simulated data, a...

  11. Conservation notes BIRD BANDING

    E-Print Network [OSTI]

    --,?1 (' Conservation notes BIRD BANDING The Hows and Whys Three Pintail ducks from North America Stewart L,. Udall, Sectetaty FISH AND WILDLIFE SERVICE #12;#12;'"'^^ ''^ "^ CONSERVATION NOTES BIRD

  12. Quickies : intelligent sticky notes

    E-Print Network [OSTI]

    Mistry, Pranav (Pranav K.)

    2008-01-01T23:59:59.000Z

    This thesis introduces 'Quickies', an attempt to bring one of the most useful inventions of the 20th century into the digital age: the ubiquitous sticky notes. Sticky notes help us manage our to-do lists, tag our objects ...

  13. Average Fe K-alpha emission from distant AGN

    E-Print Network [OSTI]

    A. Corral; M. J. Page; F. J. Carrera; X. Barcons; S. Mateos; J. Ebrero; M. Krumpe; A. Schwope; J. A. Tedds; M. G. Watson

    2008-10-02T23:59:59.000Z

    One of the most important parameters in the XRB (X-ray background) synthesis models is the average efficiency of accretion onto SMBH (super-massive black holes). This can be inferred from the shape of broad relativistic Fe lines seen in X-ray spectra of AGN (active galactic nuclei). Several studies have tried to measure the mean Fe emission properties of AGN at different depths with very different results. We compute the mean Fe emission from a large and representative sample of AGN X-ray spectra up to redshift ~ 3.5. We developed a method of computing the rest-frame X-ray average spectrum and applied it to a large sample (more than 600 objects) of type 1 AGN from two complementary medium sensitivity surveys based on XMM-Newton data, the AXIS and XWAS samples. This method makes use of medium-to-low quality spectra without needing to fit complex models to the individual spectra but with computing a mean spectrum for the whole sample. Extensive quality tests were performed by comparing real to simulated data, and a significance for the detection of any feature over an underlying continuum was derived. We detect with a 99.9% significance an unresolved Fe K-alpha emission line around 6.4 keV with an EW ~ 90 eV, but we find no compelling evidence of any significant broad relativistic emission line in the final average spectrum. Deviations from a power law around the narrow line are best represented by a reflection component arising from cold or low-ionization material. We estimate an upper limit for the EW of any relativistic line of 400 eV at a 3 sigma confidence level. We also marginally detect the so-called Iwasawa-Taniguchi effect on the EW for the unresolved emission line, which appears weaker for higher luminosity AGN.

  14. Constraining the properties of AGN host galaxies with Spectral Energy Distribution modeling

    E-Print Network [OSTI]

    Ciesla, L; Georgakakis, A; Bernhard, E; Mitchell, P D; Buat, V; Elbaz, D; Floc'h, E Le; Lacey, C G; Magdis, G E; Xilouris, M

    2015-01-01T23:59:59.000Z

    [abridged] We use the latest release of CIGALE, a galaxy SED fitting model relying on energy balance, to study the influence of an AGN in estimating both the SFR and stellar mass in galaxies, as well as the contribution of the AGN to the power output of the host. Using the galaxy formation SAM GALFORM, we create mock galaxy SEDs using realistic star formation histories (SFH) and add an AGN of Type 1, Type 2, or intermediate type whose contribution to the bolometric luminosity can be variable. We perform an SED fitting of these catalogues with CIGALE assuming three different SFHs: a single- and double-exponentially-decreasing, and a delayed SFH. Constraining thecontribution of an AGN to the LIR (fracAGN) is very challenging for fracAGN<20%, with uncertainties of ~5-30% for higher fractions depending on the AGN type, while FIR and sub-mm are essential. The AGN power has an impact on the estimation of $M_*$ in Type 1 and intermediate type AGNs but has no effect for galaxies hosting Type 2 AGNs. We find that i...

  15. On Black Hole Masses and Radio Loudness in AGN

    E-Print Network [OSTI]

    Ari Laor

    2000-09-13T23:59:59.000Z

    The distribution of radio to optical fluxes in AGN is bimodal. The physical origin for this bimodality is not understood. In this Letter I describe observational evidence, based on the Boroson & Green PG quasar sample, that the radio loudness bimodality is strongly related to the black hole mass (M_BH). Nearly all PG quasars with M_BH>10^9M_sun are radio loud, while quasars with M_BH<3x10^8M_sun are practically all radio quiet. This result is consistent with the dependence of quasar host galaxy morphology on radio loudness. There is no simple physical explanation for this result, but it may provide a clue on how jets are formed near massive black holes. The radio loudness--black hole mass relationship suggests that the properties of various types of AGN may be largely set by three basic parameters, M_BH, L/L_Eddington, and inclination angle.

  16. Near Infrared observations of Soft X-ray selected AGN

    E-Print Network [OSTI]

    D. Grupe; H. -C Thomas

    2002-02-21T23:59:59.000Z

    We report the results of near infrared observations of 19 soft X-ray selected AGN. The goal of the observations was to search for strong, narrow Paschen-alpha or Brackett-gamma emission lines, as a sign of nuclear starbursts. We found Pa-alpha emission in the spectra of 11 sources and Br-gamma in at least five. Strong NIR emission has been found in two sources, CBS 126 and Mkn 766, both objects with strong [OIII]5007 emission, weak FeII emission and wavelength dependent degree of polarization in the optical. Classical Narrow Line Seyfert 1 galaxies do not show exceptionally strong NIR emission lines. We present the results of our study and discuss how our findings fit into an evolutionary scheme of AGN.

  17. [On the jet contribution to the AGN cosmic energy budget

    E-Print Network [OSTI]

    A. Cattaneo; P. N. Best

    2008-12-08T23:59:59.000Z

    Black holes release energy via the production of photons in their accretion discs but also via the acceleration of jets. We investigate the relative importance of these two paths over cosmic time by determining the mechanical luminosity function (LF) of radio sources and by comparing it to a previous determination of the bolometric LF of active galactic nuclei (AGN) from X-ray, optical and infrared observations. The mechanical LF of radio sources is computed in two steps: the determination of the mechanical luminosity as a function of the radio luminosity and its convolution with the radio LF of radio sources. Even with the large uncertainty deriving from the former, we can conclude that the contribution of jets is unlikely to be much larger than 10% of the AGN energy budget at any cosmic epoch.

  18. XMM-Newton Observations of AGN Iron Line Profiles

    E-Print Network [OSTI]

    James Reeves

    2002-11-18T23:59:59.000Z

    XMM-Newton observations of type I AGN are presented. The properties of the iron K emission line are reviewed, the majority of AGN observed by XMM-Newton show narrow, unresolved (by XMM) iron lines at 6.4 keV from cold matter that must originate far from the inner accretion disc, perhaps in the putative torus or outer broad line region. The strength of this narrow line appears to decrease with luminosity, implying a reduction in the covering fraction of this material in the more luminous quasars. Few examples of the broad, relativistic iron line profile have been found by XMM-Newton, although in MCG -6-30-15, the extreme breadth of the broad line component may imply a Kerr metric for the central black hole. Generally, relativistic Fe K line profiles are not required in a number of other Seyfert 1 X-ray spectra.

  19. The AGN Hubble Diagram and Its Implications for Cosmology

    E-Print Network [OSTI]

    Fulvio Melia

    2014-09-27T23:59:59.000Z

    We use a recently proposed luminosity distance measure for relatively nearby active galactic nuclei (AGNs) to test the predicted expansion of the Universe in the R_h=ct and LCDM cosmologies. This comparative study is particularly relevant to the question of whether or not the Universe underwent a transition from decelerated to accelerated expansion, which is believed to have occurred---on the basis of Type Ia SN studies---within the redshift range (0 < z < 1.3) that will eventually be sampled by these objects. We find that the AGN Hubble Diagram constructed from currently available sources does not support the existence of such a transition. While the scatter in the AGN data is still too large for any firm conclusions to be drawn, the results reported here nonetheless confirm and strengthen similar results of comparative analyses using other types of source, such as cosmic chronometers and gamma ray bursts. We show that the Akaike, Kullback, and Bayes Information Criteria all consistently yield a likelihood of ~74-93% that R_h=ct is closer to the "true" cosmology than LCDM is.

  20. The AGN Hubble Diagram and Its Implications for Cosmology

    E-Print Network [OSTI]

    Melia, Fulvio

    2014-01-01T23:59:59.000Z

    We use a recently proposed luminosity distance measure for relatively nearby active galactic nuclei (AGNs) to test the predicted expansion of the Universe in the R_h=ct and LCDM cosmologies. This comparative study is particularly relevant to the question of whether or not the Universe underwent a transition from decelerated to accelerated expansion, which is believed to have occurred---on the basis of Type Ia SN studies---within the redshift range (0 < z < 1.3) that will eventually be sampled by these objects. We find that the AGN Hubble Diagram constructed from currently available sources does not support the existence of such a transition. While the scatter in the AGN data is still too large for any firm conclusions to be drawn, the results reported here nonetheless confirm and strengthen similar results of comparative analyses using other types of source, such as cosmic chronometers and gamma ray bursts. We show that the Akaike, Kullback, and Bayes Information Criteria all consistently yield a likeli...

  1. Parsec-Scale Jet-Environment Interactions in AGN

    E-Print Network [OSTI]

    Matthew L. Lister

    2007-07-12T23:59:59.000Z

    Observations made with the VLBA have led to fundamental advances in our understanding of how radio jets in AGN evolve from parsec-scales out to distances exceeding several hundred kiloparsecs. In this review I discuss current models of young radio source evolution, as well as the observational evidence for a rapid change in jet properties on scales of ~1 kpc. A central topic of current debate is the relative importance of intermittent jet fueling versus jet-environment interactions in causing a drop-off in powerful radio sources at this critical evolutionary stage. Recent 3-D hydrodynamical jet simulations suggest that dense environments and cloud collisions can temporarily stifle, but not completely halt powerful relativistic jets. Several VLBA studies of jet-ISM interactions in both blazars and weak Seyfert jets have indicated that collimated outflows are indeed possible in dense environments. At present, the bulk of the evidence favors intermittent AGN accretion as the dominant factor in determining the evolutionary path of large numbers of AGN jets.

  2. AGN-stimulated Cooling of Hot Gas in Elliptical Galaxies

    E-Print Network [OSTI]

    Valentini, Milena

    2015-01-01T23:59:59.000Z

    We study the impact of relatively weak AGN feedback on the interstellar medium of intermediate and massive elliptical galaxies. We find that the AGN activity, while globally heating the ISM, naturally stimulates some degree of hot gas cooling on scales of several kpc. This process generates the persistent presence of a cold ISM phase, with mass ranging between 10$^4$ and $\\gtrsim$ 5 $\\times$ 10$^7$ M$_\\odot$, where the latter value is appropriate for group centered, massive galaxies. Widespread cooling occurs where the ratio of cooling to free-fall time before the activation of the AGN feedback satisfies $t_{cool}/t_{ff} \\lesssim 70$, that is we find a less restrictive threshold than commonly quoted in the literature. This process helps explaining the body of observations of cold gas (both ionized and neutral/molecular) in Ellipticals and, perhaps, the residual star formation detected in many early-type galaxies. The amount and distribution of the off-center cold gas vary irregularly with time. The cold ISM v...

  3. Suzaku observations of AGN and synergy with GLAST

    SciTech Connect (OSTI)

    Kataoka, Jun [Department of Physics, Tokyo Institute of Technology, Tokyo, 152-8551 (Japan); Takahashi, Tad [Institute of Space and Astronautical Science, JAXA, Kanagawa, 229-8510 (Japan); Madejski, Greg [Kavli Institute for Particle Astrophysics and Cosmology, Stanford University (United States)

    2007-07-12T23:59:59.000Z

    In next five years, dramatic progress is anticipated for the AGN studies, as we have two important missions to observe celestial sources in the high energy regime: GLAST and Suzaku. Suzaku is the 5th Japanese X-ray astronomy satellite which was successfully launched in July 2005. It carries four X-ray sensitive imaging CCD cameras (0.2-12 keV) located in the focal planes of X-ray telescope, and a non-imaging, collimated hard X-ray detector, which extends the bandpass of the observatory to include the 10-600 keV range. Simultaneous monitoring observations by the two instruments (GLAST and Suzaku) will be particularly valuable for variable radio-loud AGN, allowing the cross-correlations of time series as well as detailed modeling of the spectral evolution between the X-ray and gamma-ray energy bands. In this paper, we show early highlights from Suzaku observations of radio-loud AGNs, and discuss what we can do with GLAST in forthcoming years.

  4. Suzaku Observations of AGN and Synergy with GLAST

    SciTech Connect (OSTI)

    Kataoka, Jun; /Tokyo Inst. Tech.; Takahashi, Tad; /JAXA, Sagamihara; Madejski, Greg; /KIPAC, Menlo Park

    2007-10-29T23:59:59.000Z

    In next five years, dramatic progress is anticipated for the AGN studies, as we have two important missions to observe celestial sources in the high energy regime: GLAST and Suzaku. Suzaku is the 5th Japanese X-ray astronomy satellite which was successfully launched in July 2005. It carries four X-ray sensitive imaging CCD cameras (0.2-12 keV) located in the focal planes of X-ray telescope, and a non-imaging, collimated hard X-ray detector, which extends the bandpass of the observatory to include the 10-600 keV range. Simultaneous monitoring observations by the two instruments (GLAST and Suzaku) will be particularly valuable for variable radio-loud AGN, allowing the cross-correlations of time series as well as detailed modeling of the spectral evolution between the X-ray and gamma-ray energy bands. In this paper, we show early highlights from Suzaku observations of radio-loud AGNs, and discuss what we can do with GLAST in forthcoming years.

  5. E-Print Network 3.0 - agn broad line Sample Search Results

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

    Quasars Blazars All likely... spectroscopy of quasars (a class of AGN) shows emission lines that are not close to the laboratory position... luminosity versions Type 1:...

  6. E-Print Network 3.0 - agn reactor series Sample Search Results

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

    rsum of Boelo Schuur Summary: Epoxidation, Hydroxylation, and Alkokylation of Jatropha oil Louis Daniel; Agnes A. Ardiyanti; Boelo Schuur... . Green Chemicals from Jatropha...

  7. E-Print Network 3.0 - agn luminosity function Sample Search Results

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

    ratio (1 < RIRX < 30). This ... Source: Reynolds, Christopher S. - Department of Astronomy, University of Maryland at College Park Collection: Physics 2 AGN Science at Far-IR...

  8. Three years of Swift/BAT Survey of AGN: Reconciling Theory and Observations?

    SciTech Connect (OSTI)

    Burlon, D.; /Garching, Max Planck Inst., MPE; Ajello, M.; /SLAC /KIPAC, Menlo Park; Greiner, J.; /Garching, Max Planck Inst., MPE; Comastri, A.; /Muenchen, Tech. U. Universe; Merloni, A.; /Garching, Max Planck Inst., MPE /Muenchen, Tech. U. Universe; Gehrels, N.; /NASA, Goddard

    2011-02-07T23:59:59.000Z

    It is well accepted that unabsorbed as well as absorbed AGN are needed to explain the nature and the shape of the Cosmic X-ray background, even if the fraction of highly absorbed objects (dubbed Compton-thick sources) substantially still escapes detection. We derive and analyze the absorption distribution using a complete sample of AGN detected by Swift-BAT in the first three years of the survey. The fraction of Compton-thick AGN represents only 4.6% of the total AGN population detected by Swift-BAT. However, we show that once corrected for the bias against the detection of very absorbed sources the real intrinsic fraction of Compton-thick AGN is 20{sub -6}{sup +9}%. We proved for the first time (also in the BAT band) that the anti-correlation of the fraction of absorbed AGN and luminosity it tightly connected to the different behavior of the luminosity functions (XLFs) of absorbed and unabsorbed AGN. This points towards a difference between the two subsamples of objects with absorbed AGN being, on average, intrinsically less luminous than unobscured ones. Moreover the XLFs show that the fraction of obscured AGN might also decrease at very low luminosity. This can be successfully interpreted in the framework of a disk cloud outflow scenario as the disappearance of the obscuring region below a critical luminosity. Our results are discussed in the framework of population synthesis models and the origin of the Cosmic X-ray Background.

  9. E-Print Network 3.0 - agn dusty tori Sample Search Results

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

    Galaxies Summary: Croston (U. Herts) 12;Contents Brief review of AGN physics & phenomenology Nuclear X-ray emission... -Riley dichotomy? 12;The Central Engine Accretion...

  10. E-Print Network 3.0 - agn activity self-regulation Sample Search...

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

    with low-luminosity AGN. No ... Source: Thomas, Daniel - Institute of Cosmology and Gravitation, University of Portsmouth Collection: Physics 52 X-shooter Science...

  11. Some Holomorphic Semi-Groups* In this note we state some basic spectral properties of a class of operator*

    E-Print Network [OSTI]

    Langlands, Robert

    generalize theorems of Nelson5 and Nelson and Stinespring* *.1 1Nelson, E., and W.F. Stinespring, Amer

  12. A rich bounty of AGN in the 9 square degree Bootes survey: high-z obscured AGN and large-scale structure

    E-Print Network [OSTI]

    R. C. Hickox; C. Jones; W. R. Forman; S. S. Murray; A. Kenter; M. Brodwin; the Chandra XBootes; NOAO Deep Wide-Field Survey; Spitzer IRAC Shallow Survey; AGES Teams

    2006-11-21T23:59:59.000Z

    We use observations from the 9 square degree multiwavelength survey in Bootes to identify hundreds of obscured active galactic nuclei (AGN) with high redshifts (z > 0.7), luminosities (L_bol > 10^45 ergs/s), and moderate obscuring columns (N_H > 10^22 cm^-2), and to measure the clustering properties of X-ray AGN at z > 1. In the Bootes region, shallow (5 ks) Chandra X-ray observations have detected ~4,000 X-ray sources, and the same region has been mapped with deep optical imaging and by Spitzer IRAC, which detects ~300,000 point sources, of which ~30,000 have detections in all four IRAC bands, for which we can select AGN on the basis of their mid-IR colors. With the MMT/Hectospec we have obtained modest resolution optical spectra for about half the X-ray sources (out to z > 3) and ~20,000 galaxies (out to z = 0.7). With this multiwavelength data we select >400 AGN per square degree (compared to 12 per square degree from SDSS). Among a sample of IRAC-selected AGN we identify 641 candidate obscured objects based on their R band and IRAC luminosities. We use X-ray stacking techniques to verify that they are obscured AGN and measure their absorbing column densities. We also measure the three-dimensional two-point correlation function for X-ray selected AGN.

  13. Blazars and the emerging AGN/black hole X-ray binary paradigm

    E-Print Network [OSTI]

    P. Uttley

    2005-08-02T23:59:59.000Z

    We briefly review the emerging paradigm which links the radio-quiet and radio-loud classes of AGN to the different accretion states observed in stellar mass black hole X-ray binary systems (BHXRBs), and discuss the relevance of the AGN/BHXRB connection to blazar variability.

  14. Discovery of an ultrasoft transient ROSAT AGN: WPVS007

    E-Print Network [OSTI]

    D. Grupe; K. Beuermann; K. Mannheim; H. -C. Thomas; D. deMartino; H. H. Fink

    1995-06-14T23:59:59.000Z

    We have identified the ROSAT source RX J0039.2-5117 with the previously almost unknown `narrow line' Seyfert 1 galaxy WPVS007 (z=0.028). The X-ray source displays quite unusual properties for an AGN. It was bright and ultrasoft in the ROSAT All-Sky Survey (RASS) and found at a level lower by a factor of ~ 400 in PSPC count rate in 1993. The implied 0.1-2.4 keV luminosity during the RASS was ~ 10^{37} W. We discuss possible explanations for the extremely soft X-ray spectrum and the observed variability.

  15. CONSERVATION NOTES WILD CHICKENS

    E-Print Network [OSTI]

    ^-^ CONSERVATION NOTES AMERICA'S WILD CHICKENS Most natural environments in the United States once and Wildlife Service Bureau of Sport Fisheries and Wildlife, Daniel H. Janzen, Director #12;#12;CONSERVATION

  16. Matt Johnson Lecture Notes

    E-Print Network [OSTI]

    Johnson, Matthew

    1 Matt Johnson Lecture Notes WILDLIFE ECOLOGY AND MANAGEMENT (Humboldt State Univ. WLDF 300 are. My name is Dr. Matt Johnson, and I'll be teaching both the lecture and discussion sections

  17. AGN Environments in the Sloan Digital Sky Survey I: Dependence on Type, Redshift, and Luminosity

    E-Print Network [OSTI]

    Natalie E. Strand; Robert J. Brunner; Adam D. Myers

    2008-07-24T23:59:59.000Z

    We explore how the local environment is related to the redshift, type, and luminosity of active galactic nuclei (AGN). Recent simulations and observations are converging on the view that the extreme luminosity of quasars is fueled in major mergers of gas-rich galaxies. In such a picture, quasars are expected to be located in regions with a higher density of galaxies on small scales where mergers are more likely to take place. However, in this picture, the activity observed in low-luminosity AGN is due to secular processes that are less dependent on the local galaxy density. To test this hypothesis, we compare the local photometric galaxy density on kiloparsec scales around spectroscopic Type I and Type II quasars to the local density around lower luminosity spectroscopic Type I and Type II AGN. To minimize projection effects and evolution in the photometric galaxy sample we use to characterize AGN environments, we place our random control sample at the same redshift as our AGN and impose a narrow redshift window around both the AGN and control targets. We find that higher luminosity AGN have more overdense environments compared to lower luminosity AGN on all scales out to our $2\\Mpchseventy$ limit. Additionally, in the range $0.3\\leqslant z\\leqslant 0.6$, Type II quasars have similarly overdense environments to those of bright Type I quasars on all scales out to our $2\\Mpchseventy$ limit, while the environment of dimmer Type I quasars appears to be less overdense than the environment of Type II quasars. We see increased overdensity for Type II AGN compared to Type I AGN on scales out to our limit of $2\\Mpchseventy$ in overlapping redshift ranges. We also detect marginal evidence for evolution in the number of galaxies within $2\\Mpchseventy$ of a quasar with redshift.

  18. Dielectric recombination and stability of warm gas in AGN

    SciTech Connect (OSTI)

    Chakravorty, Susmita; Kembhavi, Ajit K.; Elvis, Martin; Ferland, Gary; Badnell, N. R. [Harvard College Observatory, Cambridge, MA 02138 (United States); IUCAA, Post Bag 4, Ganeshkhind, Pune 411 007 (India); Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 (United States); Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom)

    2012-05-25T23:59:59.000Z

    High resolution ultraviolet and X-ray spectra show that material outflow occur from the close neighbourhoods of super-massive black holes in active galactic nuclei (AGN). The absorption features seen in the high resolution soft X-ray spectra is attributed to gas which is conventionally termed as the warm absorber (WA) and often the thermal equilibrium (stability) curve is used as a theoretical tool to offer insights into the nature of the WA. The shape of the stability curve is determined by factors like the spectral energy distribution of the ionizing flux and the chemical composition of the absorbing gas. We found that the stability curves obtained under the same set of assumptions for the prevalent physical conditions in the AGN environment, but using recently derived dielectronic recombination rates, give significantly different results from what is predicted with older atomic data. The variations in phase space region of the stability curves corresponding to WAs, lead to different physical predictions. The results obtained with the current dielectronic recombination rate coefficients are more reliable because the WA models along the stability curve have computed, updated coefficient values.

  19. Simulations of the OzDES AGN Reverberation Mapping Project

    E-Print Network [OSTI]

    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

    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 $16.8AGN and constrain the radius-luminosity ($R-L$) relationship. Here we investigate the expected efficiency of the OzDES 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 ...

  20. Cooling, AGN Feedback and Star Formation in Simulated Cool-Core Galaxy Clusters

    E-Print Network [OSTI]

    Li, Yuan; Ruszkowski, Mateusz; Voit, G Mark; O'Shea, Brian W; Donahue, Megan

    2015-01-01T23:59:59.000Z

    Numerical simulations of active galactic nuclei (AGN) feedback in cool-core galaxy clusters have successfully avoided classical cooling flows, but often produce too much cold gas. We perform adaptive mesh simulations that include momentum-driven AGN feedback, self-gravity, star formation and stellar feedback, focusing on the interplay between cooling, AGN heating and star formation in an isolated cool-core cluster. Cold clumps triggered by AGN jets and turbulence form filamentary structures tens of kpc long. This cold gas feeds both star formation and the supermassive black hole (SMBH), triggering an AGN outburst that increases the entropy of the ICM and reduces its cooling rate. Within 1-2 Gyr, star formation completely consumes the cold gas, leading to a brief shutoff of the AGN. The ICM quickly cools and redevelops multiphase gas, followed by another cycle of star formation/AGN outburst. Within 6.5 Gyr, we observe three such cycles. There is good agreement between our simulated cluster and the observations...

  1. AGN Clustering in the Local Universe: An Unbiased Picture from Swift-BAT

    SciTech Connect (OSTI)

    Cappelluti, N.; /Garching, Max Planck Inst., MPE; Ajello, M.; /SLAC /KIPAC, Menlo Park; Burlon, D.; /Garching, Max Planck Inst., MPE; Krumpe, M.; /San Diego, CASS; Miyaji, T.; /Observ. Astron. Natl., Ensenada; Bonoli, S.; /Garching, Max Planck Inst.; Greiner, J.; /Garching, Max Planck Inst., MPE

    2011-08-11T23:59:59.000Z

    We present the clustering measurement of hard X-ray selected AGN in the local Universe. We used a sample of 199 sources spectroscopically confirmed detected by Swift-BAT in its 15-55 keV all-sky survey. We measured the real space projected auto-correlation function and detected a signal significant on projected scales lower than 200 Mpc/h. We measured a correlation length of r{sub 0} = 5.56{sup +0.49}{sub -0.43} Mpc/h and a slope {gamma} = 1.64{sup -0.08}{sub -0.07}. We also measured the auto-correlation function of Tyep I and Type II AGN and found higher correlation length for Type I AGN. We have a marginal evidence of luminosity dependent clustering of AGN, as we detected a larger correlation length of luminous AGN than that of low luminosity sources. The corresponding typical host DM halo masses of Swift-BAT are {approx} log(M{sub DMH) {approx} 12-14 h{sup -1}M/M{sub {circle_dot}} which is the typical mass of a galaxy group. We estimated that the local AGN population has a typical lifetime {tau}{sub AGN} {approx}0.7 Gyr, it is powered by SMBH with mass M{sub BH} {approx}1-10x10{sup 8} M{sub {circle_dot}} and accreting with very low efficiency, log({epsilon}){approx}-2.0>. We also conclude that local AGN galaxies are typically red-massive galaxies with stellar mass of the order 2-80x10{sup 10} h{sup -1}M{sub {circle_dot}}. We compared our results with clustering predictions of merger-driven AGN triggering models and found a good agreement.

  2. Does Dissipation in AGN Disks Couple to the Total Pressure?

    E-Print Network [OSTI]

    E. T. Vishniac

    1993-08-12T23:59:59.000Z

    Recent work on the transport of angular momentum in accretion disks suggests that the Velikhov-Chandrasekhar instability, in which a large scale magnetic field generates small scale eddys in a shearing environment, may be ultimately responsible for this process. Although there is considerable controversy about the origin and maintenance of this field in accretion disks, it turns out that it is possible to argue, quite generally, using scaling arguments, that this process is sensitive to the total pressure in an AGN disk, rather than the pressure contributed by gas alone. We conclude that the resolution of the conceptual difficulties implied by the presence of strong thermal and viscous instabilities in radiation pressure and electron scattering dominated does not lie in models that couple the total dissipation rate to the gas pressure alone, or to some weighted mean of the gas and radiation pressures.

  3. Optical and X-ray Variability of AGNs

    E-Print Network [OSTI]

    C. Martin Gaskell

    2006-12-30T23:59:59.000Z

    I present new comparisons of AGN optical, UV, and X-ray variations. These reveal complex relationships between the different passbands that can change with time in a given object. While there is evidence from several objects that X-ray and optical activity levels are correlated on long timescales, variations on shorter timescales can occur independently. It is proposed that the combination of correlated and uncorrelated short-timescale variability is a consequence of anisotropic high-energy emission. It is also argued that the correlation between X-ray and optical variability on long timescales must be due to a common underlying factor and not to reprocessing of X-ray radiation.

  4. IC5063: AGN driven outflow of warm and cold gas

    E-Print Network [OSTI]

    R. Morganti; J. Holt; L. Saripalli; T. A. Oosterloo; C. N. Tadhunter

    2007-10-05T23:59:59.000Z

    We present new ATCA 17- and 24-GHz radio images and ESO-NTT optical spectra of the radio-loud Seyfert galaxy IC5063, the first galaxy in which a fast (~ 600 km/s) outflow of neutral hydrogen was discovered. The new radio data confirm the triple radio structure with a central core and two resolved radio lobes. This implies that the previously detected fast outflow of neutral gas is occurring off-nucleus, near a radio lobe about 0.5 kpc from the core. The ionised gas shows complex kinematics in the region co-spatial with the radio emission. Broad and blueshifted (~ 500 km/s) emission is observed in the region of the radio lobe, at the same location as the blueshifted HI absorption. The velocity of the ionised outflow is similar to the one found in HI. The first order correspondence between the radio and optical properties suggests that the outflow is driven by the interaction between the radio jet and the ISM. Despite the high outflow velocities, no evidence is found for the ionisation of the gas being due to fast shocks in the region of the outflow, indicating that photoionisation from the AGN is likely to be the dominant ionisation mechanism. The outflow rate of the warm (ionised) gas is small compared to that of the cold gas. The mass outflow rate associated with the HI is in the same range as for ``mild'' starburst-driven superwinds in ULIRGs. However, in IC5063, the AGN-driven outflow appears to be limited to the inner kpc region of the galaxy. The kinetic power associated with the HI outflow is a small fraction (a few x 10^-4) of the Eddington luminosity of the galaxy but is a significant fraction (~ 0.1) of the nuclear bolometric luminosity. In IC5063, the outflows may have sufficient kinetic power to have a significant impact on the evolution of the ISM in the host galaxy.

  5. What Can We Learn from the Smallest AGN?

    E-Print Network [OSTI]

    Ari Laor

    2007-02-21T23:59:59.000Z

    Quite a few things. In particular, reverberation mapping of NGC 4395, the lowest luminosity type 1 Active Galactic Nucleus (AGN, L_bol~10^40 erg/s) revealed a size of only ~1 light hour for the C IV broad line region (BLR), which is by far the smallest BLR. This, together with a similar determination of a size of ~200 light days in a luminous quasar (Kaspi et al. 2007), suggests that the R_BLR\\propto L^1/2 relation holds over a range of 10^7 in L. This relation was suggested to result from dust sublimation, which sets R_BLR. This suggestion was beautifully confirmed recently by the dust reverberation results of Suganuma et al. (2006). The R_BLR\\propto L^1/2 relation implies that the broad lines width increases with decreasing luminosity according to v\\propto L^-1/4. But, there is an observational cutoff at v~25,000 km/s, and thus below a certain threshold L the BLR would not be detectable. Such objects constitute the so-called "true type 2" AGN (e.g. most FR I radio galaxies). The physical origin of the BLR gas is not established yet, but high quality Keck spectra of the Halpha profile in NGC 4395 rule out a clumped distribution, and indicate that the gas resides in a smooth flow, most likely in a thick rotationally supported configuration. The Halpha line also reveals extended exponential wings, which are well modeled by electron scattering within the BLR emitting gas. Such wings can be used as a direct probe of the BLR temperature and optical depth.

  6. What controls the [O III] 5007 line strength in AGN?

    E-Print Network [OSTI]

    Alexei Baskin; Ari Laor

    2005-02-22T23:59:59.000Z

    AGN display an extreme range in the narrow emission line equivalent widths. Specifically, in the PG quasar sample the equivalent width of the narrow [O III] 5007 line has a range of >300, while the broad Hb line, for example, has a range of 10 only. The strength of [O III] 5007 is modulated by the covering factor, CF, of the narrow line region (NLR) gas, its density n_e, and ionization parameter U. To explore which of these factors produces the observed large range in [O III] 5007 strength, we measure the strength of the matching narrow Hb and [O III] 4363 lines, detected in 40 out of the 87 z<0.5 PG quasars in the Boroson & Green sample. The photoionization code CLOUDY is then used to infer CF, n_e, and U in each object, assuming a single uniform emitting zone. We find that the range of CF (~0.02-0.2) contributes about twice as much as the range in both n_e and U towards modulating the strength of the [O III] 5007 line. The CF is inversely correlated with luminosity, but it is not correlated with L_Edd as previously speculated. The single zone [O III] 5007 emitting region is rather compact, having R=40L_44^0.45 pc. These emission lines can also be fit with an extreme two zone model, where [O III] 4363 is mostly emitted by a dense (n_e=10^7) inner zone at R=L_44^0.5 pc, and [O III] 5007 by a low density (n_e=10^3) extended outer zone at R=750L_44^0.34 pc. Such an extended [O III] 5007 emission should be well resolved by HST imaging of luminous AGN. Further constraints on the radial gas distribution in the NLR can be obtained from the spectral shape of the IR continuum emitted by the associated dust.

  7. Class Notes FOUNDATION SYSTEMS

    E-Print Network [OSTI]

    Jacobs, Laurence J.

    CEE 6443 Class Notes FOUNDATION SYSTEMS Applied Geotechnical Analysis and Evaluation by Paul W: 404-894-6226; Fax-2281 January 2004 #12;CEE 6443 FOUNDATION SYSTEMS Paul W. Mayne, PhD, P.E. Professor) ! Shallow Foundations ` Spread Footings ` Structural Mats/Rafts ` Deformations (deflections, displacements

  8. Forest Service Research Note

    E-Print Network [OSTI]

    Standiford, Richard B.

    Hills fire of October 30-November 1, 1967 showing observation sites, Cleveland National Forest, southernU.S.O.A. Forest Service Research Note PSW-183 ABSTRACT: Two fires burned in the same area was rruch more disastrous than the Pine Hills fire of 1967. The earlier fire claimed 11 lives, and covered

  9. Computer Engineering Curriculum Notes

    E-Print Network [OSTI]

    Mather, Patrick T.

    1 Computer Engineering Curriculum Notes 2013-2014 Technical Electives Students fulfill 15 credits be assigned to either group A or group B as determined by Computer Engineering program committee. Every year the computer engineering program committee will review the list and may make change(s). Group A (at least 6

  10. ELECTRICAL ENGINEERING Curriculum Notes

    E-Print Network [OSTI]

    Mather, Patrick T.

    choices. Replace MAT 521 (Probability and Statistics 3 credits) with CIS 321 (Intro. to Probability Engineering and Computer Science there are four tracks in electrical engineering. Communications Track: ELEELECTRICAL ENGINEERING Curriculum Notes 2013-2014 1. Electrical Engineering (EE) students must

  11. all-sky survey agn: Topics by E-print Network

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

    sky coverage each orbit, and full sky coverage each 50 days, hard x-ray studies of gamma-ray bursts, AGN, galactic transients, x-ray binaries and accretion-powered pulsars can be...

  12. Discovery of 10 micron silicate emission in quasars. Evidence of the AGN unification scheme

    E-Print Network [OSTI]

    R. Siebenmorgen; M. Haas; E. Kr"ugel; B. Schulz

    2005-04-12T23:59:59.000Z

    According to the unified scheme, AGN are surrounded by a dust-torus, and the observed diversity of AGN properties results from the different orientations relative to our line of sight. The strong resonance of silicate dust at 10 micron is therefore, as expected, seen in absorption towards many type-2 AGN. In type-1 AGN, it should be seen in emission because the hot inner surface of the dust torus becomes visible. However, this has not been observed so far, thus challenging the unification scheme or leading to exotic modifications of the dust-torus model. Here we report the discovery of the 10 micron silicate feature in emission in two luminous quasars with the Infrared Spectrograph of the Spitzer Space Telescope.

  13. Finding AGN in Deep X-ray Flux States with Swift

    E-Print Network [OSTI]

    Grupe, Dirk; Bush, Mason; Pruett, Chelsea; Ernst, Sonny; Barber, Taylor; Carter, Jen; Schartel, Norbert; Rodriguez, Pedro; Santos-Lle, Maria

    2015-01-01T23:59:59.000Z

    We report on our ongoing project of finding Active Galactic Nuclei (AGN) that go into deep X-ray flux states detected by Swift. Swift is performing an extensive study on the flux and spectral variability of AGN using Guest Investigator and team fill-in programs followed by triggering XMM_Newton for deeper follow-up observations. So far this program has been very successful and has led to a number of XMM-Newton follow up observations, including Mkn 335, PG 0844+349, and RX J2340.8-5329. Recent analysis of new Swift AGN observations reveal several AGN went into a very low X-ray flux state, particularly Narrow-Line Seyfert 1 galaxies. One of these is RX J2317-4422, which dropped by a factor of about 60 when compared to the ROSAT All-Sky Survey.

  14. Constraints on black hole fuelling modes from the clustering of X-ray AGN

    E-Print Network [OSTI]

    Fanidakis, N; Mountrichas, G; Krumpe, M; Baugh, C M; Lacey, C G; Frenk, C S; Miyaji, T; Benson, A J

    2013-01-01T23:59:59.000Z

    We present a clustering analysis of X-ray selected AGN by compiling X-ray samples from the literature and re-estimating the dark matter (DM) halo masses of AGN in a uniform manner. We find that moderate luminosity AGN (Lx(2-10 keV)=10^42-10^44 erg/sec) in the z=0-1.3 Universe are typically found in DM haloes with masses of ~10^13 Msun. We then compare our findings to the theoretical predictions of the coupled galaxy and black hole formation model GALFORM. We find good agreement when our calculation includes the hot-halo mode of accretion onto the central black hole. This type of accretion, which is additional to the common cold accretion during disk instabilities and galaxy mergers, is tightly coupled to the AGN feedback in the model. The hot-halo mode becomes prominent in DM haloes with masses greater than ~10^12.5 Msun, where AGN feedback typically operates, giving rise to a distinct class of moderate luminosity AGN that inhabit rich clusters and superclusters. Cold gas fuelling of the black hole cannot pro...

  15. AGN clustering in the local Universe: an unbiased picture from Swift-BAT

    E-Print Network [OSTI]

    Cappelluti, N; Burlon, D; Krumpe, M; Miyaji, T; Bonoli, S; Greiner, J

    2010-01-01T23:59:59.000Z

    We present the clustering measurement of hard X-ray selected AGN in the local Universe. We used a sample of 199 sources spectroscopically confirmed detected by Swift-BAT in its 15-55 keV all-sky survey. We measured the real space projected auto-correlation function and detected a signal significant on projected scales lower than 200 Mpc/h. We measured a correlation length of r0=5.56+0.49-0.43 Mpc/h and a slope {\\gamma}=1.64-0.08 -0.07. We also measured the auto-correlation function of Type I and Type II AGN and found higher correlation length for Type I AGN. We have a marginal evidence of luminosity dependent clustering of AGN, as we detected a larger correlation length of luminous AGN than that of low luminosity sources. The corresponding typical host DM halo masses of Swift-BAT are log(MDMH) 12-14 h^-1 M/M_sun, depending on the subsample. For the whole sample we measured log(MDMH)\\sim 13.15 h-1 M/M_sun which is the typical mass of a galaxy group. We estimated that the local AGN population has a typical life...

  16. A Statistical Study of H I Gas in Nearby Narrow-Line AGN-Hosting Galaxies

    E-Print Network [OSTI]

    Zhu, Yi-Nan

    2015-01-01T23:59:59.000Z

    As a quenching mechanism, AGN feedback could suppress on-going star formation in their host galaxies. On the basis of a sample of galaxies selected from ALFALFA HI survey, the dependence of their HI mass M[HI], stellar mass M[*] & HI-to-stellar mass ratio M[HI]/M[*] on various tracers of AGN activity are presented and analyzed in this paper. Almost all the AGN-hostings in this sample are gas-rich galaxies, and there is no any evidence to be shown to indicate that the AGN activity could increase/decrease either M[HI] or M[HI]/M[*]. The cold neutral gas can not be fixed positions accurately just based on available HI data due to the large beam size of ALFALFA survey. In addition, even though AGN-hostings are more easily detected by HI survey compared with absorption line galaxies, these two types of galaxies show similar star formation history. If an AGN-hosting would ultimately evolve into an old red galaxy with few cold gas, then when and how the gas has been exhausted have to be solved by future hypothes...

  17. On the Anomalous Silicate Emission Features of AGNs: A Possible Interpretation Based on Porous Dust

    E-Print Network [OSTI]

    M. P. Li; Q. J. Shi; Aigen Li

    2008-08-29T23:59:59.000Z

    The recent Spitzer detections of the 9.7 micron Si--O silicate emission in type 1 AGNs provide support for the AGN unification scheme. The properties of the silicate dust are of key importance to understanding the physical, chemical and evolutionary properties of the obscuring dusty torus around AGNs. Compared to that of the Galactic interstellar medium (ISM), the 10 micron silicate emission profile of type 1 AGNs is broadened and has a clear shift of peak position to longer wavelengths. In literature this is generally interpreted as an indication of the deviations of the silicate composition, size, and degree of crystallization of AGNs from that of the Galactic ISM. In this Letter we show that the observed peak shift and profile broadening of the 9.7 micron silicate emission feature can be explained in terms of porous composite dust consisting of ordinary interstellar amorphous silicate, amorphous carbon and vacuum. Porous dust is naturally expected in the dense circumnuclear region around AGNs, as a consequence of grain coagulation.

  18. OPERATOR'S MANUAL IMPORTANT NOTES

    E-Print Network [OSTI]

    Kleinfeld, David

    -3 B) LOAD CONNECTION (I) and PAR. 3-3 C) LOAD CONNECTION (II) add the following: Load connectionsMODEL OPERATOR'S MANUAL IMPORTANT NOTES: 1) This manual is valid for the following Model: BOP 20-20, BOP 36-12, BOP 50-8, BOP 72-6, BOP 100-4 BOP 100W, 200W, 400W POWER SUPPLY #12;#12;1 LOAD

  19. Notes and Definitions

    Weekly Natural Gas Storage Report (EIA)

    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) " ,"ClickPipelinesProvedDecember 2005 (Thousand Barrels, Except Where Noted)December 2005dNovember

  20. HOST GALAXIES, CLUSTERING, EDDINGTON RATIOS, AND EVOLUTION OF RADIO, X-RAY, AND INFRARED-SELECTED AGNs

    SciTech Connect (OSTI)

    Hickox, Ryan C.; Jones, Christine; Forman, William R.; Murray, Stephen S.; Brodwin, Mark; Narayan, Ramesh; Kenter, Almus; Caldwell, Nelson; Anderson, Michael E. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Kochanek, Christopher S. [Department of Astronomy and Center for Cosmology and Astroparticle Physics, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210-1173 (United States); Eisenstein, Daniel [Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Jannuzi, Buell T.; Dey, Arjun [National Optical Astronomy Observatory, Tucson, AZ 85726-6732 (United States); Brown, Michael J. I. [School of Physics, Monash University, Clayton 3800, Victoria (Australia); Stern, Daniel; Eisenhardt, Peter R.; Gorjian, Varoujan [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Cool, Richard J. [Princeton University Observatory, Peyton Hall, Princeton, NJ 08544-1001 (United States)], E-mail: rhickox@cfa.harvard.edu

    2009-05-01T23:59:59.000Z

    We explore the connection between different classes of active galactic nuclei (AGNs) and the evolution of their host galaxies, by deriving host galaxy properties, clustering, and Eddington ratios of AGNs selected in the radio, X-ray, and infrared (IR) wavebands. We study a sample of 585 AGNs at 0.25 < z < 0.8 using redshifts from the AGN and Galaxy Evolution Survey (AGES). We select AGNs with observations in the radio at 1.4 GHz from the Westerbork Synthesis Radio Telescope, X-rays from the Chandra XBooetes Survey, and mid-IR from the Spitzer IRAC Shallow Survey. The radio, X-ray, and IR AGN samples show only modest overlap, indicating that to the flux limits of the survey, they represent largely distinct classes of AGNs. We derive host galaxy colors and luminosities, as well as Eddington ratios, for obscured or optically faint AGNs. We also measure the two-point cross-correlation between AGNs and galaxies on scales of 0.3-10 h {sup -1} Mpc, and derive typical dark matter halo masses. We find that: (1) radio AGNs are mainly found in luminous red sequence galaxies, are strongly clustered (with M {sub halo} {approx} 3 x 10{sup 13} h {sup -1} M {sub sun}), and have very low Eddington ratios {lambda} {approx}< 10{sup -3}; (2) X-ray-selected AGNs are preferentially found in galaxies that lie in the 'green valley' of color-magnitude space and are clustered similar to the typical AGES galaxies (M {sub halo} {approx} 10{sup 13} h {sup -1} M {sub sun}), with 10{sup -3} {approx}< {lambda} {approx}< 1; (3) IR AGNs reside in slightly bluer, slightly less luminous galaxies than X-ray AGNs, are weakly clustered (M {sub halo} {approx}< 10{sup 12} h {sup -1} M {sub sun}), and have {lambda}>10{sup -2}. We interpret these results in terms of a simple model of AGN and galaxy evolution, whereby a 'quasar' phase and the growth of the stellar bulge occurs when a galaxy's dark matter halo reaches a critical mass between {approx}10{sup 12} and 10{sup 13} M {sub sun}. After this event, star formation ceases and AGN accretion shifts from radiatively efficient (optical- and IR-bright) to radiatively inefficient (optically faint, radio-bright) modes.

  1. ALFALFA HI Data Stacking II. HI content of the host galaxies of AGN

    E-Print Network [OSTI]

    Fabello, S; Catinella, B; Giovanelli, R; Haynes, M P; Heckman, T M; Schiminovich, D

    2011-01-01T23:59:59.000Z

    We use a stacking technique to measure the average HI content of a volume-limited sample of 1871 AGN host galaxies from a parent sample of galaxies selected from the SDSS and GALEX imaging surveys with stellar masses greater than 10^10 M_sun and redshifts in the range 0.025ALFALFA) survey. In previous work, we found that the HI gas fraction in galaxies correlates most strongly with the combination of optical/UV colour and stellar surface mass density. We therefore build a control sample of non-AGN matched to the AGN hosts in these two properties. We study trends in HI gas mass fraction (M(HI)/M_*), where M_* is the stellar mass) as a function of black hole accretion rate indicator L[OIII]/M(BH). We find no significant difference in HI content between AGN and control samples at all values of black hole accretion rate probed by the galaxies in our sample. This indicates that AGN do not influence the large-scale gaseous properties of galaxie...

  2. Optical, UV, and X-ray Clues to the Nature of Narrow Line AGNs

    E-Print Network [OSTI]

    Ari Laor

    2000-05-08T23:59:59.000Z

    AGNs with narrow Balmer lines show various extreme properties. In particular, rapid X-ray variability, steep X-ray spectra, peculiar optical and UV line ratios, and possibly peculiar line profiles. Since all these phenomena occur together they are likely to be related to one specific underlying physical parameter. I review recent evidence, based on HST imaging of low z quasars, which suggests that the H-beta line width and continuum luminosity of quasars provide a reasonably accurate estimate of the black hole mass. This implies that narrow-line AGN have relatively low black hole masses, and thus high L/L_Edd, as independently suggested based on their steep X-ray spectra. I present additional evidence suggesting that the X-ray variability and the radio loudness are primarily driven by the black hole mass. The high mass inflow rate into the core of narrow-line AGNs may produce a denser and more enriched BLR, a high column radiation pressure driven outflow, and a smaller illumination angle for the NLR, as suggested by the observed emission line properties. Narrow-line AGNs may thus provide important clues for understanding the rich overall phenomenology of AGNs.

  3. Looking below the floor: constraints on the AGN radio luminosity functions at low power

    E-Print Network [OSTI]

    Capetti, Alessandro

    2015-01-01T23:59:59.000Z

    We constrain the behavior of the radio luminosity function (RLF) of two classes of active galactic nuclei (AGN) namely AGN of low radio power (LRP) and BL Lac objects. The extrapolation of the observed steep RLFs to low power predicts a space density of such objects that exceeds that of the sources that can harbor them and this requires a break to a shallower slope. For LRP AGN we obtain P_br,LRP > 10^20.5 W/Hz at 1.4 GHz to limit their density to be smaller than that of elliptical galaxies with black hole masses M_BH > 10^7.5 solar masses. By combining this value with the limit derived by the observations the break must occur at P_br,LRP~10^20.5-10^21.5 W/Hz. For BL Lacs we find P_br,BLLAC > 10^23.3 W/Hz otherwise they would outnumber the density of weak-lined and compact radio sources, while the observations indicate P_br,BLLAC < 10^24.5 W/Hz. In the framework of the AGN unified model a low luminosity break in the RLF of LRP AGN must correspond to a break in the RLF of BL Lacs. The ratio between P_br,LRP...

  4. The ISO-2MASS AGN survey: On the type-1 sources

    E-Print Network [OSTI]

    C. Leipski; M. Haas; H. Meusinger; R. Siebenmorgen; R. Chini; C. M. Scheyda; M. Albrecht; B. J. Wilkes; J. P. Huchra; S. Ott; C. Cesarsky; R. Cutri

    2005-07-13T23:59:59.000Z

    We combined the ISOCAM Parallel Mode Survey at 6.7 micron (LW2 filter) with the Two Micron All Sky Survey in order to obtain a powerful tool to search for AGN independent of dust extinction. Using moderate colour criteria H-K>0.5 and K-LW2>2.7 we have selected a sample of 77 AGN candidates in an effective area of about 10 square degrees. By means of optical spectroscopy we find 24 (30%) type-1 QSOs at redshifts 0.10.8. About one third of the ISO-2MASS QSOs show so red optical colours, that they are missed in optical and UV AGN surveys like SDSS, 2DF, or HES. With a surface density of about 2 deg^(-2) down to RISO-2MASS QSOs outnumber the 1.35 deg^(-2) of the SDSS quasar survey by 50%; we find a combined optical-IR QSO surface density of 2.7 deg^(-2). Since only two of the ISO-2MASS QSOs have also J-K>2, the inclusion of the ISO mid-infrared photometry significantly extends the capabilities of the pure 2MASS red AGN survey. We suggest that the newly found red AGN resemble young members of the quasar population, and that quasars spend much of their lifetime in a dust enshrouded phase.

  5. Submillimetre observations of WISE/radio-selected AGN and their environments

    E-Print Network [OSTI]

    Jones, Suzy F; Lonsdale, Carol; Condon, James; Farrah, Duncan; Stern, Daniel; Tsai, Chao-Wei; Assef, Roberto J; Bridge, Carrie; Kimball, Amy; Lacy, Mark; Eisenhardt, Peter; Wu, Jingwen; Jarrett, Tom

    2015-01-01T23:59:59.000Z

    We present JCMT SCUBA-2 850microns submillimetre (submm) observations of 30 mid-infrared (mid-IR) luminous AGN, detected jointly by the WISE all-sky IR survey and the NVSS/FIRST radio survey. These rare sources are selected by their extremely red mid-infrared spectral energy distributions (SEDs) and compact radio counterparts. Further investigations show that they are highly obscured, have abundant warm AGN-heated dust and are thought to be experiencing intense AGN feedback. These galaxies appear to be consistent with an AGN-dominated galaxy, and could be a transient phase of merging galaxies. When comparing the number of submm galaxies (SMGs) detected serendipitously in the surrounding 1.5-arcmin to those in blank-field submm surveys, there is a very significant overdensity, of order 5, but no sign of radial clustering centred at our primary objects. The WISE/radio-selected AGN thus reside in 10-Mpc-scale overdense environments, that could be forming in pre-viralised clusters of galaxies. WISE/radio-selected...

  6. 9.7 um Silicate Features in AGNs: New Insights into Unification Models

    E-Print Network [OSTI]

    Y. Shi; G. H. Rieke; D. C. Hines; V. Gorjian; M. W. Werner; K. Cleary; F. J. Low; P. S. Smith; J. Bouwman

    2006-12-15T23:59:59.000Z

    We describe observations of 9.7 um silicate features in 97 AGNs, exhibiting a wide range of AGN types and of X-ray extinction toward the central nuclei. We find that the strength of the silicate feature correlates with the HI column density estimated from fitting the X-ray data, such that low HI columns correspond to silicate emission while high columns correspond to silicate absorption. The behavior is generally consistent with unification models where the large diversity in AGN properties is caused by viewing-angle-dependent obscuration of the nucleus. Radio-loud AGNs and radio-quiet quasars follow roughly the correlation between HI columns and the strength of the silicate feature defined by Seyfert galaxies. The agreement among AGN types suggests a high-level unification with similar characteristics for the structure of the obscuring material. We demonstrate the implications for unification models qualitatively with a conceptual disk model. The model includes an inner accretion disk (< 0.1 pc in radius), a middle disk (0.1-10 pc in radius) with a dense diffuse component and with embedded denser clouds, and an outer clumpy disk (10-300 pc in radius).

  7. Heavily Obscured AGN in Star-Forming Galaxies at z~2

    E-Print Network [OSTI]

    Treister, E; Schawinski, K; Urry, C M; Gawiser, E; Virani, S; Lira, P; Kartaltepe, J; Damen, M; Taylor, E N; Le Floc'h, E; Justham, Stephen; Koekemoer, A

    2009-01-01T23:59:59.000Z

    We study the properties of a sample of 211 heavily-obscured Active Galactic Nucleus (AGN) candidates in the Extended Chandra Deep Field-South selecting objects with f_24/f_R>1000 and R-K>4.5. Of these, 18 were detected in X-rays and found to be obscured AGN with neutral hydrogen column densities of ~10^23 cm^-2. In the X-ray undetected sample, the following evidence suggests a large fraction of heavily-obscured (Compton Thick) AGN: (i) The stacked X-ray signal of the sample is strong, with an observed ratio of soft to hard X-ray counts consistent with a population of ~90% heavily obscured AGN combined with 10% star-forming galaxies. (ii) The X-ray to mid-IR ratios for these sources are significantly larger than that of star-forming galaxies and ~2 orders of magnitude smaller than for the general AGN population, suggesting column densities of N_H>5x10^24 cm^-2. (iii) The Spitzer near- and mid-IR colors of these sources are consistent with those of the X-ray-detected sample if the effects of dust self-absorptio...

  8. The StarburstAGN Connection ASP Conference Series, Vol. 408, c 2009

    E-Print Network [OSTI]

    Norris, Ray

    for studying the evolution and inter-relationship of star-forming and active galaxies. Al- though the project deep sur- vey projects such as VISTA/VIDEO (Jarvis 2008), Spitzer/SERVS (Lacy et al. 2008) and Herschel of an AGN, but the SED of a star-forming galaxy. project, which aims to survey 75% of the sky to a depth 40

  9. The ULIRG NGC 6240: Luminous extended Xray emission and evidence for an AGN

    E-Print Network [OSTI]

    Greiner, Jochen

    spectrum can be well fit by emission from two components in roughly equal proportions: a thermal optically for the formation of this AGN. However, the lu­ minosity in the remaining extended thermal component is still et al. 1997). Within this core most of the ulti­ mate enigmatic power source of the FIR radiation

  10. Radiation pressure, absorption and AGN feedback in the Chandra Deep Fields

    E-Print Network [OSTI]

    Raimundo, S I; Bauer, F E; Alexander, D M; Brandt, W N; Luo, B; Vasudevan, R V; Xue, Y Q

    2010-01-01T23:59:59.000Z

    The presence of absorbing gas around the central engine of Active Galactic Nuclei (AGN) is a common feature of these objects. Recent work has looked at the effect of the dust component of the gas, and how it enhances radiation pressure such that dusty gas can have a lower effective Eddington limit than ionised gas. In this work, we use multi-wavelength data and X-ray spectra from the 2 Ms exposures of the Chandra Deep Field North and Chandra Deep Field South surveys, to characterise the AGN in terms of their Eddington ratio and hydrogen column density. Their distributions are then compared with what is predicted when considering the coupling between dust and gas. Our final sample consists of 234 objects from both fields, the largest and deepest sample of AGN for which this comparison has been made up to date. We find that most of the AGN in our sample tend to be found at low Eddington ratios (typically between 1e-4 and 1e-1) and high column density (>1e22 cm^-2), with black hole masses between ~1e8 and 1e9 so...

  11. The StarburstAGN Connection ASP Conference Series, Vol. 408, c 2009

    E-Print Network [OSTI]

    Norris, Ray

    , Zhijian Luo, and Zhu Chen, eds. Distinguishing between AGN and Star-Forming Galaxies in ATLAS Kate E Facility, PO Box 76, Epping, NSW, 1710, Australia 3 Anglo-Australian Observatory, PO Box 296, Epping, NSW, 7001, Australia Abstract. The Australia Telescope Large Area Survey (ATLAS) is the widest deep radio

  12. 5.2. MONEY, BANKING AND DYNAMICS : HAYEK VS. SCHUMPETER Agns Festr

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    5.2. MONEY, BANKING AND DYNAMICS : HAYEK VS. SCHUMPETER Agnès Festré Introduction It is a fairly commonly held view these days that Schumpeter's work on money and banking is by no means easy to access, as it does, thorough investigations of numerous contributions to the debate on money and credit by authors

  13. wf01 - Energy_Expenditures.xlsx

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    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) " ,"ClickPipelines AboutDecemberSteam Coal Import CostsLiquids Reserve Class3a.86,77,1996 N| Short-Term

  14. MSW Application Checklist IMPORTANT NOTES

    E-Print Network [OSTI]

    Northern British Columbia, University of

    MSW Application Checklist IMPORTANT NOTES 1. Please submit all Application Materials and Fees SUBMIT Application for Admission to Graduate Studies Statement of Academic Interests (1-2 pages) MSW

  15. HEAVILY OBSCURED AGN IN STAR-FORMING GALAXIES AT z approx = 2

    SciTech Connect (OSTI)

    Treister, E.; Kartaltepe, Jeyhan; Le Floc'h, Emeric [Institute for Astronomy, 2680 Woodlawn Drive, University of Hawaii, Honolulu, HI 96822 (United States); Cardamone, Carolin N.; Schawinski, Kevin; Urry, C. Megan; Virani, Shanil [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520 (United States); Gawiser, Eric [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854-8019 (United States); Lira, Paulina [Departamento de AstronomIa, Universidad de Chile, Casilla 36-D, Santiago (Chile); Damen, Maaike; Taylor, Edward N. [Sterrewacht Leiden, Leiden University, NL-2300 RA Leiden (Netherlands); Justham, Stephen [Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing (China); Koekemoer, Anton M., E-mail: treister@ifa.hawaii.ed [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)

    2009-11-20T23:59:59.000Z

    We study the properties of a sample of 211 heavily obscured active galactic nucleus (AGN) candidates in the extended Chandra Deep Field-South selecting objects with f {sub 24m}u{sub m}/f{sub R} > 1000 and R - K>4.5. Of these, 18 were detected in X-rays and found to be obscured AGNs with neutral hydrogen column densities of approx10{sup 23} cm{sup -2}. In the X-ray-undetected sample, the following evidence suggests a large fraction of heavily obscured (Compton-thick) AGN: (1) The stacked X-ray signal of the sample is strong, with an observed ratio of soft to hard X-ray counts consistent with a population of approx90% heavily obscured AGNs combined with 10% star-forming galaxies. (2) The X-ray-to-mid-IR ratios for these sources are significantly larger than that of star-forming galaxies and approx2 orders of magnitude smaller than for the general AGN population, suggesting column densities of N {sub H} approx> 5 x 10{sup 24} cm{sup -2}. (3) The Spitzer near- and mid-IR colors of these sources are consistent with those of the X-ray-detected samples if the effects of dust self-absorption are considered. Spectral fitting to the rest-frame UV/optical light (dominated by the host galaxy) returns stellar masses of approx10{sup 11} M{sub sun} and (E(B - V)) = 0.5, and reveals evidence for a significant young stellar population, indicating that these sources are experiencing considerable star formation. This sample of heavily obscured AGN candidates implies a space density at z approx 2 of approx10{sup -5} Mpc{sup -3}, finding a strong evolution in the number of L{sub X} >10{sup 44} erg s{sup -1} sources from z = 1.5 to 2.5, possibly consistent with a short-lived heavily obscured phase before an unobscured quasar is visible.

  16. Some Holomorphic Semi-Groups* In this note we state some basic spectral properties of a class of operators associated with a

    E-Print Network [OSTI]

    Langlands, Robert

    of Nelson5 and Nelson and Stinespring.1 1 Nelson, E., and W.F. Stinespring, Amer.J.Math., 81, 547-560 (1959

  17. Some Holomorphic SemiGroups* In this note we state some basic spectral properties of a class of operators associated with a

    E-Print Network [OSTI]

    Langlands, Robert

    and Nelson and Stinespring. 1 1 Nelson, E., and W.F. Stinespring, Amer.J.Math., 81, 547­560 (1959). 2

  18. The Spatial Clustering of ROSAT All-Sky Survey AGNs II. Halo Occupation Distribution Modeling of the Cross Correlation Function

    E-Print Network [OSTI]

    Miyaji, Takamitsu; Coil, Alison L; Aceves, Hector

    2010-01-01T23:59:59.000Z

    This is the second paper of a series that reports on our investigation of the clustering properties of AGNs in the ROSAT All-Sky Survey (RASS) through cross-correlation functions (CCFs) with Sloan Digital Sky Survey (SDSS) galaxies. In this paper, we apply the Halo Occupation Distribution (HOD) model to the CCFs between the RASS Broad-line AGNs with SDSS Luminous Red Galaxies (LRGs) in the redshift range 0.16AGNs by a model fit to the CCF. For the first time, we are able to go beyond quoting merely a `typical' AGN host halo mass, M_h, and model the full distribution function of AGN host dark matter halos. In addition, we are able to determine the large-scale bias and the mean M_h more accurately. We explore the behavior of three simple HOD models. Our first model (Model A) is a truncated power-law HOD model in which all AGNs are satellites. With this model, we find an upper lim...

  19. Revisiting the relationship between 6 {\\mu}m and 2-10 keV continuum luminosities of AGN

    E-Print Network [OSTI]

    Mateos, S; Alonso-Herrero, A; Rovilos, E; Hernn-Caballero, A; Barcons, X; Blain, A; Caccianiga, A; Della Ceca, R; Severgnini, P

    2015-01-01T23:59:59.000Z

    We have determined the relation between the AGN luminosities at rest-frame 6 {\\mu}m associated to the dusty torus emission and at 2-10 keV energies using a complete, X-ray flux limited sample of 232 AGN drawn from the Bright Ultra-hard XMM-Newton Survey. The objects have X-ray luminosities corrected for intrinsic absorption between 10^42 and 10^46 erg/s and redshifts from 0.05 to 2.8. The rest-frame 6 {\\mu}m luminosities were computed using data from the Wide-Field Infrared Survey Explorer and are based on a spectral energy distribution decomposition into AGN and galaxy emission. The best-fit relationship for the full sample is consistent with being linear, L_6 {\\mu}m $\\propto$ L_2-10 keV^0.99$\\pm$0.032, but has significant intrinsic scatter, ~0.35 dex in log L_6 {\\mu}m. Assuming a constant X-ray bolometric correction, the fraction of AGN bolometric luminosity reprocessed in the mid-IR decreases weakly, if at all, with the AGN luminosity, a finding at odds with simple receding torus models. Type 2 AGN have re...

  20. Study of microwave/gamma-ray properties for Fermi-LAT bright AGNs

    E-Print Network [OSTI]

    Gasparrini, D; Giommi, P; Pittori, C; Colafrancesco, S

    2009-01-01T23:59:59.000Z

    Blazars are a small fraction of all extragalactic sources but, unlike other objects, they are strong emitters across the entire electromagnetic spectrum. Recent data in the microwave region of the electromagnetic spectrum have become available to allow for systematic studies of blazars over large cosmological volumes. This frequency band is indeed particularly suited for the selection of blazars since at these frequencies the contamination from radio extended components with steep spectra is no longer present and the emission from the accretion process is negligible. During the first 3 months of scientific operations Fermi-LAT detected 106 bright, high-galactic latitude (| b |> 10 deg) AGNs with high significance. In this study we investigate the possible relations between the microwave and the gamma-ray emissions for Fermi-LAT detected AGNs belonging to WMAP 5th year bright source catalog.

  1. EXPANDED IRON UTA SPECTRA-PROBING THE THERMAL STABILITY LIMITS IN AGN CLOUDS

    SciTech Connect (OSTI)

    Ferland, G. J.; Lykins, M. L. [Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 (United States); Kisielius, R.; Jonauskas, V. [Institute of Theoretical Physics and Astronomy, Vilnius University, A. Gostauto 12, LT-01108 (Lithuania); Keenan, F. P. [Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN (United Kingdom); Van Hoof, P. A. M. [Royal Observatory of Belgium, Ringlaan 3, B-1180 Brussel (Belgium); Porter, R. L. [Department of Physics, University of Georgia, Athens, GA 30602 (United States); Williams, R. J. R., E-mail: gary@pa.uky.edu [AWE plc, Aldermaston, Reading RG7 4PR (United Kingdom)

    2013-04-20T23:59:59.000Z

    The Fe unresolved transition arrays (UTAs) produce prominent features in the {approx}15-17 A wavelength range in the spectra of active galactic nuclei (AGNs). Here, we present new calculations of the energies and oscillator strengths of inner-shell lines from Fe XIV, Fe XV, and Fe XVI. These are crucial ions since they are dominant at inflection points in the gas thermal stability curve, and UTA excitation followed by autoionization is an important ionization mechanism for these species. We incorporate these, and data reported in previous papers, into the plasma simulation code Cloudy. This updated physics is subsequently employed to reconsider the thermally stable phases in absorbing media in AGNs. We show how the absorption profile of the Fe XIV UTA depends on density, due to the changing populations of levels within the ground configuration.

  2. Test de conformit : une approche algbrique Agns Arnould* --Pascale Le Gall**

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    RECHERCHE Test de conformité : une approche algébrique Agnès Arnould* -- Pascale Le Gall** * IRCOM@lami.univ-evry.fr R?SUM?. Nous proposons dans cet article une formalisation du test de conformité contre des spécifications concrétisons les tests abstraits issus des spécifications en tests concrets dans les langages de programmation

  3. The heating mechanism for the warm/cool dust in powerful, radio-loud AGN

    E-Print Network [OSTI]

    C. Tadhunter; D. Dicken; J. Holt; K. Inskip; R. Morganti; D. Axon; C. Buchanan; R. Gonzlez Delgado; P. Barthel; I. van Bemmel

    2007-03-30T23:59:59.000Z

    The uncertainty surrounding the nature of the heating mechanism for the dust that emits at mid- to far-IR (MFIR) wavelengths in active galaxies limits our understanding of the links between active galactic nuclei (AGN) and galaxy evolution, as well as our ability to interpret the prodigious infrared and sub-mm emission of some of the most distant galaxies in the Universe. Here we report deep Spitzer observations of a complete sample of powerful, intermediate redshift (0.05 power, as traced by [OIII]5007 emission, is strongly correlated with both the mid-IR (24 micron) and the far-IR (70 micron) luminosities, however, with increased scatter in the 70 micron correlation. A major cause of this increased scatter is a group of objects that falls above the main correlation and displays evidence for prodigious recent star formation activity at optical wavelengths, along with relatively cool MFIR colours. These results provide evidence that illumination by the AGN is the primary heating mechanism for the dust emitting at both 24 and 70 microns, with starbursts dominating the heating of the cool dust in only 20 -- 30% of objects. This implies that powerful AGN are not always accompanied by the type of luminous starbursts that are characteristic of the peak of activity in major gas-rich mergers.

  4. Unravelling lifecycles & physics of radio-loud AGN in the SKA era

    E-Print Network [OSTI]

    Kapi?ska, Anna D; Jackson, Carole A; An, Tao; Baan, Willem A; Jarvis, Matt J

    2014-01-01T23:59:59.000Z

    Radio-loud AGN (>10^{22} W/Hz at 1.4 GHz) will be the dominant bright source population detected with the SKA. The high resolution that the SKA will provide even in wide-area surveys will mean that, for the first time sensitive, multi-frequency total intensity and polarisation imaging of large samples of radio-loud active galactic nuclei (AGN) will become available. The unprecedented sensitivity of the SKA coupled with its wide field of view capabilities will allow identification of objects of the same morphological type (i.e. the entire FR I, low- and high-luminosity FR II, disturbed morphology as well as weak radio-emitting AGN populations) up to high redshifts (z~4 and beyond), and at the same stage of their lives, from the youngest CSS/GPS sources to giant and fading (dying) sources, through to those with restarted activity radio galaxies and quasars. Critically, the wide frequency coverage of the SKA will permit analysis of same-epoch rest-frame radio properties, and the sensitivity and resolution will a...

  5. The distribution of silicate strength in Spitzer spectra of AGNs and ULIRGs

    E-Print Network [OSTI]

    Lei Hao; D. W. Weedman; H. W. W. Spoon; J. A. Marshall; N. A. Levenson; M. Elitzur; J. R. Houck

    2006-12-18T23:59:59.000Z

    A sample of 196 AGNs and ULIRGs observed by the Infrared Spectrograph (IRS) on Spitzer is analyzed to study the distribution of the strength of the 9.7 micron silicate feature. Average spectra are derived for quasars, Seyfert 1 and Seyfert 2 AGNs, and ULIRGs. We find that quasars are characterized by silicate features in emission and Seyfert 1s equally by emission or weak absorption. Seyfert 2s are dominated by weak silicate absorption, and ULIRGs are characterized by strong silicate absorption (mean apparent optical depth about 1.5). Luminosity distributions show that luminosities at rest frame 5.5 micron are similar for the most luminous quasars and ULIRGs and are almost 10^5 times more luminous than the least luminous AGN in the sample. The distributions of spectral characteristics and luminosities are compared to those of optically faint infrared sources at z~2 being discovered by the IRS, which are also characterized by strong silicate absorption. It is found that local ULIRGs are a similar population, although they have lower luminosities and somewhat stronger absorption compared to the high redshift sources.

  6. The distribution of absorption in AGN detected in the XMM-Newton observations of the CDFS

    E-Print Network [OSTI]

    T. Dwelly; M. J. Page

    2006-08-23T23:59:59.000Z

    We have used very deep XMM-Newton observations of the Chandra Deep Field-South to examine the spectral properties of the faint active galactic nucleus (AGN) population. Crucially, redshift measurements are available for 84% (259/309) of the XMM-Newton sample. We have calculated the absorption and intrinsic luminosities of the sample using an extensive Monte Carlo technique incorporating the specifics of the XMM-Newton observations. Twenty-three sources are found to have substantial absorption and intrinsic X-ray luminosities greater than 10^44 erg/s, putting them in the "type-2" QSO regime. We compare the redshift, luminosity and absorption distributions of our sample to the predictions of a range of AGN population models. In contrast to recent findings from ultra-deep Chandra surveys, we find that there is little evidence that the absorption distribution is dependent on either redshift or intrinsic X-ray luminosity. The pattern of absorption in our sample is best reproduced by models in which ~75% of the AGN population is heavily absorbed at all luminosities and redshifts.

  7. A note on axial symmetries

    E-Print Network [OSTI]

    Christopher Beetle; Shawn Wilder

    2013-12-31T23:59:59.000Z

    This note describes a local scheme to characterize and normalize an axial Killing field on a general Riemannian geometry. No global assumptions are necessary, such as that the orbits of the Killing field all have period $2 \\pi$. Rather, any Killing field that vanishes at at least one point necessarily has the expected global properties.

  8. Lecture notes Introductory fluid mechanics

    E-Print Network [OSTI]

    Malham, Simon J.A.

    Lecture notes Introductory fluid mechanics Simon J.A. Malham Simon J.A. Malham (22nd February 2013 of fluid mechanics and along the way see lots of interesting applications. 2 Fluid flow 2.1 Flow A material essential to all modern car braking mechanisms. Fluids can be further subcatergorized. There are ideal

  9. Lecture notes Ideal fluid mechanics

    E-Print Network [OSTI]

    Malham, Simon J.A.

    Lecture notes Ideal fluid mechanics Simon J.A. Malham Simon J.A. Malham (6th Feb 2010) Maxwell and in the process learn about the subtleties of fluid mechanics and along the way see lots of interesting are generally incompressible--a feature essential to all modern car braking mechanisms. Fluids can be further

  10. Lecture notes Introductory fluid mechanics

    E-Print Network [OSTI]

    Malham, Simon J.A.

    Lecture notes Introductory fluid mechanics Simon J.A. Malham Simon J.A. Malham (17th March 2014 of fluid mechanics and along the way see lots of interesting applications. 2 Fluid flow, the Continuum are generally incompressible--a feature essential to all modern car braking mechanisms. Fluids can be further

  11. Technical Note Engineering Soils Maps

    E-Print Network [OSTI]

    Technical Note Engineering Soils Maps PAUL M. SANTI Department of Geology and Geological database. In this technique, rose-pie charts provide an overall assessment of soils hazards structures such as pipelines, power lines, and roads; and regional evaluations of sources of ag- gregate

  12. Technical Note 499 December1990

    E-Print Network [OSTI]

    Technical Note 499 · December1990 Interpretation as Abduction Jerry R. Hobbs, Mark Stickel;Interpretation as Abduction Jerry R. Hobbs, Mark Stickel, Douglas Appelt, and Paul Martin Artificial Intelligence Center SRI International Abstract Abduction is inference to the best explanation. In the TACITUS project

  13. THOMSON SCIENTIFIC EndNote Web

    E-Print Network [OSTI]

    texto. · Armazenar até 10.000 referências em sua base de dados pessoal (EndNote Web Library), pro resultados das pesquisas diretamente em sua base de dados pessoal do EndNote Web clicando no botão "Save to EndNote Web". As referências sal- vas em sua base de dados pessoal do EndNote Web serão exibidas com

  14. NOTE: OPTIMAL NON-HOMOGENEOUS COMPOSITES FOR ...

    E-Print Network [OSTI]

    R. Tavakoli

    2012-10-02T23:59:59.000Z

    NOTE: OPTIMAL NON-HOMOGENEOUS COMPOSITES FOR. DYNAMIC LOADING REVISITED. R. TAVAKOLI. 1. Problem formulation. Consider ? ? Rd (

  15. OFFSHORE WIND FARMS Guidance note for Environmental

    E-Print Network [OSTI]

    OFFSHORE WIND FARMS Guidance note for Environmental Impact Assessment In respect of FEPA and CPA requirements Version 2 - June 2004 #12;Offshore Wind Farms: Guidance Note for Environmental Impact Assessment 2004 #12;Offshore Wind Farms: Guidance Note for Environmental Impact Assessment in Respect of FEPA

  16. NOTES ON PRODUCT SYSTEMS WILLIAM ARVESON

    E-Print Network [OSTI]

    Arveson, William

    NOTES ON PRODUCT SYSTEMS WILLIAM ARVESON Abstract. We summarize the basic properties of continuous tensor product systems of Hilbert spaces and their role in non-commutative dynamics. These are lecture notes, not intended for publication. 1. Concrete Product Systems In these notes we assume the reader

  17. The impact of accretion disk winds on the X-ray spectrum of AGN: Part 2 - XSCORT + Hydrodynamic Simulations

    E-Print Network [OSTI]

    N. J. Schurch; C. Done; D. Proga

    2008-10-06T23:59:59.000Z

    abridged: We use XSCORT, together with the hydrodynamic accretion disc wind simulation from Proga & Kallman (2004), to calculate the impact that the accretion disk wind has on the X-ray spectrum from a 1E8 solar mass black hole Active Galactic Nuclei (AGN) accreting at 0.5 L/L_Edd. The properties of the resulting spectra depend on viewing angle and clearly reflect the distinct regions apparent in the original hydrodynamic simulation. Very equatorial lines-of-sight (l.o.s) are dominated by Compton scattering and nearly-neutral absorption. Polar l.o.s result in largely featureless spectra. Finally, l.o.s that intersect the transition region between these extremes have a wide range of absorption features imprinted on the spectrum. Both polar and transition region l.o.s produce spectra that show highly-ionized, blue-shifted, Fe absorption features that are qualitatively similar to features observed in the X-ray spectra of a growing number of AGN. The spectra presented here clearly demonstrate that current simulations of line driven AGN accretion disk winds cannot reproduce the smooth soft X-ray excess. Furthermore, they predict that high accretion rate (L/L_Edd) AGN are likely to be strongly affected by obscuration, in sharp contrast to the clean picture that is generally assumed, based on the observed relation between the opening angle of the molecular torus and AGN luminosity.

  18. Mass without radiation: heavily obscured AGN, the X-ray Background and the Black Hole Mass Density

    E-Print Network [OSTI]

    Comastri, A; Marconi, A; Risaliti, G; Salvati, M

    2015-01-01T23:59:59.000Z

    A recent revision of black hole scaling relations (Kormendy & Ho 2013), indicates that the local mass density in black holes should be increased by up to a factor of five with respect to previously determined values. The local black hole mass density is connected to the mean radiative efficiency of accretion through the time integral of the AGN volume density and a significant increase of the local black holes mass density would have interesting consequences on AGN accretion properties and demography. One possibility to explain a large black hole mass density is that most of the Black Hole growth is via radiatively inefficient channels such as super Eddington accretion, however, given the intrinsic degeneracies in the Soltan argument, this solution is not unique. Here we show how it is possible to accommodate a larger fraction of heavily buried, Compton thick AGN, without violating the limit imposed by the hard X-ray and mid-infrared backgrounds spectral energy density.

  19. magnitude larger than in star-forming galaxies. This all suggests a heating source other than stars and the AGN is the obvious

    E-Print Network [OSTI]

    Blake, Geoffrey

    magnitude larger than in star-forming galaxies. This all suggests a heating source other than stars and the AGN is the obvious alternative. Differential magni®cation of AGN-heated gas therefore seems-switching schemeÐare the cause of the extended CO emission, but we consider it to be remote. This is borne out

  20. Radio Observations of the AGN and Gas in Low Surface Brightness Galaxies

    E-Print Network [OSTI]

    F. Combes; J. Palous; M. Das; N. Kantharia; S. N. Vogel; S. S. Mcgaugh

    2006-01-01T23:59:59.000Z

    Abstract. LSB galaxies have low metallicities, diffuse stellar disks, and massive HI disks. We have detected molecular gas in two giant LSB galaxies, UGC 6614 and F568-6. A millimeter continuum source has been detected in UGC 6614 as well. At centimeter wavelengths we have detected and mapped the continuum emission from the giant LSB galaxy 1300+0144. The emission is extended about the nucleus and is most likely originating from the AGN in the galaxy. The HI gas distribution and velocity field in 1300+0144 was also mapped. The HI disk extends well beyond the optical disk and appears lopsided in the intensity maps.

  1. Spectral comparison between AGN at z = 0.1, 0.2 and 0.3

    E-Print Network [OSTI]

    Winkler, Hartmut

    2015-01-01T23:59:59.000Z

    We identified three samples of ROSAT sources with Sloan Digital Sky Survey spectra, one at redshift z = 0.1, a second one at z = 0.2 and a third one at z = 0.3. 812 sources in total were examined. We determined the nature and spectral sub-types of the sources by visual inspection. The fraction of each sub-type at each of the three redshifts are then calculated. We consider selection biases caused by the luminosity cut-off threshold to determine whether any systematic trends in AGN type are evident with increasing redshift. We hence probe if an evolution effect is detected in our sample.

  2. Lecture notes for criticality safety

    SciTech Connect (OSTI)

    Fullwood, R.

    1992-03-01T23:59:59.000Z

    These lecture notes for criticality safety are prepared for the training of Department of Energy supervisory, project management, and administrative staff. Technical training and basic mathematics are assumed. The notes are designed for a two-day course, taught by two lecturers. Video tapes may be used at the options of the instructors. The notes provide all the materials that are necessary but outside reading will assist in the fullest understanding. The course begins with a nuclear physics overview. The reader is led from the macroscopic world into the microscopic world of atoms and the elementary particles that constitute atoms. The particles, their masses and sizes and properties associated with radioactive decay and fission are introduced along with Einstein's mass-energy equivalence. Radioactive decay, nuclear reactions, radiation penetration, shielding and health-effects are discussed to understand protection in case of a criticality accident. Fission, the fission products, particles and energy released are presented to appreciate the dangers of criticality. Nuclear cross sections are introduced to understand the effectiveness of slow neutrons to produce fission. Chain reactors are presented as an economy; effective use of the neutrons from fission leads to more fission resulting in a power reactor or a criticality excursion. The six-factor formula is presented for managing the neutron budget. This leads to concepts of material and geometric buckling which are used in simple calculations to assure safety from criticality. Experimental measurements and computer code calculations of criticality are discussed. To emphasize the reality, historical criticality accidents are presented in a table with major ones discussed to provide lessons-learned. Finally, standards, NRC guides and regulations, and DOE orders relating to criticality protection are presented.

  3. Company Level Imports Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    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) " ,"Click worksheet9,1,50022,3,,,,6,1,,781Title: Telephone:shortOilCompany Level Imports Explanatory Notes

  4. The Nature of Blue Cores in Spheroids: a Possible Connection with AGN and Star Formation

    E-Print Network [OSTI]

    Felipe Menanteau; Andre R. Martel; Paolo Tozzi; Brenda Frye; Holland C. Ford; Leopoldo Infante; Narciso Benitez; Gaspar Galaz; Daniel Coe; Garth D. Illingworth; George F. Hartig; Marc Clampin

    2004-11-04T23:59:59.000Z

    We investigate the physical nature of blue cores in early-type galaxies through the first multi-wavelength analysis of a serendipitously discovered field blue-nucleated spheroid in the background of the deep ACS/WFC griz multicolor observations of the cluster Abell 1689. The resolved g-r, r-i and i-z color maps reveal a prominent blue core identifying this galaxy as a ``typical'' case study, exhibiting variations of 0.5-1.0 mag in color between the center and the outer regions, opposite to the expectations of reddened metallicity induced gradients in passively evolved ellipticals. From a Magellan-Clay spectrum we secure the galaxy redshift at $z=0.624$. We find a strong X-ray source coincident with the spheroid galaxy. Spectral features and a high X-ray luminosity indicate the presence of an AGN in the galaxy. However, a comparison of the X-ray luminosity to a sample derived from the Chandra Deep Field South displays Lx to be comparable to Type I/QSO galaxies while the optical flux is consistent with a normal star-forming galaxy. We conclude that the galaxy's non-thermal component dominates at high-energy wavelengths while we associate the spheroid blue light with the stellar spectrum of normal star-forming galaxies. We argue about a probable association between the presence of blue cores in spheroids and AGN activity.

  5. Combining semi-analytic models with simulations of galaxy clusters: the need for AGN heating

    E-Print Network [OSTI]

    Short, C J

    2008-01-01T23:59:59.000Z

    [Abridged] We investigate the effect of energy feedback from galaxies on the intracluster medium (ICM) using a novel approach that couples a non-radiative cosmological hydrodynamical N-body simulation to a semi-analytic model (SAM) of galaxy formation. The SAM we employ is the Munich L-Galaxies model presented by De Lucia & Blaizot (2007). For each model galaxy, we calculate the energy returned to the ICM by Type II supernovae (SNe) and active galactic nuclei (AGN) and inject it into the gas component of the simulation at the appropriate location and time. To assess the impact of this feedback on the ICM, we focus on two key observables of galaxy groups and clusters: the X-ray luminosity-temperature (L-T) relation and the halo gas fraction. Using a suite of test simulations, we demonstrate that the level of stellar and AGN feedback predicted by L-Galaxies is insufficient to explain the observational data. This is because the energy liberated by quiescent 'radio' mode accretion onto the central black hole ...

  6. Cool core cycles: Cold gas and AGN jet feedback in cluster cores

    E-Print Network [OSTI]

    Prasad, Deovrat; Babul, Arif

    2015-01-01T23:59:59.000Z

    Using high-resolution 3-D and 2-D (axisymmetric) hydrodynamic simulations in spherical geometry, we study the evolution of cool cluster cores heated by feedback-driven bipolar active galactic nuclei (AGN) jets. Condensation of cold gas, and the consequent enhanced accretion, is required for AGN feedback to balance radiative cooling with reasonable efficiencies, and to match the observed cool core properties. A feedback efficiency (mechanical luminosity $\\approx \\epsilon \\dot{M}_{\\rm acc} c^2$; where $\\dot{M}_{\\rm acc}$ is the mass accretion rate at 1 kpc) as small as $5 \\times 10^{-5}$ is sufficient to reduce the cooling/accretion rate by $\\sim 10$ compared to a pure cooling flow. This value is smaller compared to the ones considered earlier, and is consistent with the jet efficiency and the fact that only a small fraction of gas at 1 kpc is accreted on to the supermassive black hole (SMBH). We find hysteresis cycles in all our simulations with cold mode feedback: {\\em condensation} of cold gas when the ratio...

  7. Ad Hoc Assessment Committee Meeting Notes

    E-Print Network [OSTI]

    O'Laughlin, Jay

    Ad Hoc Assessment Committee Meeting Notes January 17, 2008 Present: Diane Armpriest bag session (thresholds for data). The agenda item for the next ad hoc assessment committee

  8. Landing of size-selected Agn clusters on single crystal TiO2 ,,110...-,,11...

    E-Print Network [OSTI]

    Buratto, Steve

    -selected Agn + n=1,2,3 clusters with impact energy less than 2 eV per atom were deposited from the gas phase supports catalyze many reactions, including the oxidation of CO and small olefins1­4 has stimulated great interest in un- derstanding the nature of the catalytic activity, including the dependence on cluster size

  9. PIC Application Notes TechTools PIC Application Notes Page 23

    E-Print Network [OSTI]

    Peters, Dennis

    forrotaryencodersisthemouse,whichcontainstwoencodersthattrack the x- and y-axis movements of a ball in the device's underside Application Notes Page 24 · PIC Application Notes · TechTools consisting of a slotted wheel, two LEDs, and two

  10. TESLA-LNF TECHNICAL NOTE Divisione Acceleratori

    E-Print Network [OSTI]

    TESLA-LNF TECHNICAL NOTE _____________ Divisione Acceleratori Frascati, November 20, 2003 Note: TESLA Report 2003-26 TESLA DAMPING RING: INJECTION/EXTRACTION SCHEMES WITH RF DEFLECTORS D. Alesini, S/extraction schemes in the Damping Ring of TESLA using RF deflectors. We illustrate different possible solutions using

  11. Research Note Impacts of climate change on

    E-Print Network [OSTI]

    Research Note Impacts of climate change on forestry in Scotland ­ a synopsis of spatial modelling research Duncan Ray January 2008 Climate change is now one of the greatest global challenges, and research by climate change. This Research Note provides an initial synopsis of the likely impacts, with preliminary

  12. Variable VHE gamma-ray emission from non-blazar AGNs

    E-Print Network [OSTI]

    F. M. Rieger; F. A. Aharonian

    2008-05-27T23:59:59.000Z

    The observation of rapidly variable very high energy (VHE) gamma-rays from non-aligned active galactic nuclei (AGNs), as reported from M87, proves challenging for conventional theoretical acceleration and emission models. We re-examine the centrifugal acceleration of particles by rotating jet magnetospheres in the vicinity of accreting supermassive black hole systems and analyze the energy constraints imposed for highly underluminous systems. Applications are presented for conditions expected to be present in the radio galaxy M87, assuming accretion onto the central black hole to occur in an advection-dominated (ADAF) mode. We show that for a highly underluminous source like M87, centrifugally accelerated electrons may reach Lorentz factors up to $\\gamma \\sim (10^7-10^8)$, allowing inverse Compton (Thomson) upscattering of sub-mm disk photons to the TeV regime. Upscattering of Comptonized disk photons results in a flat TeV spectrum $L_{\

  13. Temperature Profiles and the Effect of AGN on Submillimeter Emission from BLAST Observations of Resolved Galaxies

    E-Print Network [OSTI]

    Wiebe, Donald V; Bock, James J; Chapin, Edward L; Devlin, Mark J; Dicker, Simon; Griffin, Matthew; Gundersen, Joshua O; Halpern, Mark; Hargrave, Peter C; Hughes, David H; Klein, Jeff; Marsden, Gaelen; Martin, Peter G; Mauskopf, Philip; Netterfield, Calvin B; Olmi, Luca; Pascale, Enzo; Patanchon, Guillaume; Rex, Marie; Scott, Douglas; Semisch, Christopher; Thomas, Nicholas; Truch, Matthew D P; Tucker, Carole; Tucker, Gregory S; Viero, Marco P

    2009-01-01T23:59:59.000Z

    Over the course of two flights, the Balloon-borne Large Aperture Submillimeter Telescope (BLAST) made resolved maps of seven nearby (BLAST05), BLAST observed a single nearby galaxy, NGC 4565. During the December 2006 flight from Antarctica (BLAST06), BLAST observed the nearby galaxies NGC 1097, NGC 1291, NGC 1365, NGC 1512, NGC 1566, and NGC 1808. We fit physical dust models to a combination of BLAST observations and other available data for the the galaxies with Spitzer data. We fit a modified blackbody to the remaining galaxies to obtain total dust mass and mean dust temperature. For the four galaxies with Spitzer data, we also produce maps and radial profiles of dust column density and temperature. We measure the fraction of BLAST detected flux originating from the central cores of these galaxies and use this to calculate a "core fraction", an upper limit on the "AGN fraction" of submillimeter detected galaxies. Fin...

  14. High redshift AGNs and HI reionisation: limits from the unresolved X-ray background

    E-Print Network [OSTI]

    Haardt, Francesco

    2015-01-01T23:59:59.000Z

    The rapidly declining population of bright quasars at z~3 appears to make an increasingly small contribution to the ionising background at the HI Lyman limit. It is then generally though that massive stars in (pre-)galactic systems may provide the additional ionising flux needed to complete HI reionisation by z>6. A galaxy dominated background, however, may require that the escape fraction of Lyman continuum radiation from high redshift galaxies is as high as 10%, a value somewhat at odds with (admittedly scarce) observational constraints. High escape fractions from dwarf galaxies have been advocated, or, alternatively, a so-far undetected (or barely detected) population of unobscured, high-redshift faint AGNs. Here we question the latter hypothesis, and show that such sources, to be consistent with the measured level of the unresolved X-ray background at z=0, can provide a fraction of the HII filling factor not larger than 13% by z=6. The fraction rises to 10%.

  15. Workshop Notes from ""Compressed Natural Gas and Hydrogen Fuels...

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

    Workshop Notes from ""Compressed Natural Gas and Hydrogen Fuels: Lessons Learned for the Safe Deployment of Vehicles"" Workshop, December 10-11, 2009 Workshop Notes from...

  16. X-ray and infrared properties of galaxies and AGNs in the 9 square degree Bootes field

    E-Print Network [OSTI]

    R. C. Hickox; C. Jones; W. R. Forman; S. S. Murray; M. Brodwin; the Chandra XBootes; Spitzer IRAC Shallow Survey; AGES; NOAO DWFS Teams

    2006-03-24T23:59:59.000Z

    We examine the X-ray and infrared properties of galaxies and AGNs in the 9 square degree Bootes field, using data from the Chandra XBootes and Spitzer IRAC Shallow Surveys, as well as optical spectroscopy from the AGES survey. A sample of ~30,000 objects are detected in all four IRAC bands, of which ~2,000 are associated with X-ray sources. We also study X-ray fainter sources using stacking techniques, and find that X-ray fluxes are highest for objects with IRAC colors that are known to be characteristic of AGNs. Because these are shallow, wide-field surveys, they probe the bright end of the AGNluminosity function out to spectroscopic redshifts as high as z=3-4. We can use this multiwavelength dataset to explore the properties and redshift evolution of a large sample of luminous active galaxies.

  17. X-ray plasma diagnostics for totally and partially photoionized plasmas such as Warm Absorber in AGN

    E-Print Network [OSTI]

    Delphine Porquet; Jacques Dubau

    1999-12-03T23:59:59.000Z

    Thanks to the new generation of X-ray satellites such as Chandra and XMM, high resolution and high sensitivity spectra are available. In particular, for the first time, the three most intense lines (resonance, intercombination and forbidden) of low charged (low Z) He-like ions are splitted for non solar plasmas. We present density, ionizing process and temperature diagnostics, for totally and partially photoionized plasmas, based on ratios of these three lines. These powerful plasma diagnostics could be used for hot astrophysical plasmas such as AGN, starburst galaxies, X-ray binaries, etc. In particular, they could be applied to Warm Absorber often seen in Active Galactic Nuclei (Porquet & Dubau 2000), which is an important key tool to understand central region of different types of AGN (Seyfert 1 and 2, high and low redshift quasars).

  18. CIP Activities Notes from the Office

    E-Print Network [OSTI]

    Pilyugin, Sergei S.

    Highlights Paintball CIP Activities Notes from the Office Birthdays Manners Grammar The's Weekly. CIP Activities The CIP Office has organized a lot of activities for this week! Emeritus Mardi

  19. Lecture Notes on Langmuir Probe Diagnostics

    E-Print Network [OSTI]

    Chen, Francis F.

    University of California, Los Angeles Mini-Course on Plasma Diagnostics, IEEE-ICOPS meeting, Jeju, KoreaLecture Notes on Langmuir Probe Diagnostics Francis F. Chen Electrical Engineering Department...................................................................25 1. Fully ionized plasmas

  20. Notes on Slovene and Slavic Etymology

    E-Print Network [OSTI]

    Hamp, Eric P.

    1997-01-01T23:59:59.000Z

    The notes present critiques of F. Bezlaj's Etymological Dictionary of the Slovene Language and new proposals for the etymology of the words krma 'animal feed', Krma (toponym), kaelj 'cough', ogenj 'flame, fire', and oglje 'charcoal'....

  1. Ad Hoc Assessment Committee Meeting Notes

    E-Print Network [OSTI]

    O'Laughlin, Jay

    Ad Hoc Assessment Committee Meeting Notes March 6, 2008 Present: Diane Armpriest, Jane to the ad hoc assessment committee list, the associate dean list, and the department chair list

  2. Ad Hoc Assessment Committee Meeting Notes

    E-Print Network [OSTI]

    O'Laughlin, Jay

    Ad Hoc Assessment Committee Meeting Notes September 26, 2008 Present: Diane Armpriest, Alton why we assess ­ develop meaning for work Share success stories #12;The future of the Ad Hoc

  3. Ad Hoc Assessment Committee Meeting Notes

    E-Print Network [OSTI]

    O'Laughlin, Jay

    Ad Hoc Assessment Committee Meeting Notes November 8, 2007 Present: Rula Awwad Rafferty timeline had been modified after input from the ad hoc assessment committee at its previous meeting

  4. Briefing Note 2010 14 18 August 2010

    E-Print Network [OSTI]

    Pedersen, Tom

    Briefing Note 2010 ­ 14 18 August 2010 Oxygen Minimum Zones near the BC Coast Christina Schallenberg, MSc Oceanography, Dalhousie University. Current PhD student at the University of Victoria, School

  5. DIAGNOSTICS OF AGN-DRIVEN MOLECULAR OUTFLOWS IN ULIRGs FROM HERSCHEL-PACS OBSERVATIONS OF OH AT 119 ?m

    SciTech Connect (OSTI)

    Spoon, H. W. W.; Lebouteiller, V. [Cornell University, CRSR, Space Sciences Building, Ithaca, NY 14853 (United States); Farrah, D. [Department of Physics, Virginia Tech, Blacksburg, VA 24061 (United States); Gonzlez-Alfonso, E. [Departamento de Fsica y Matemticas, Universidad de Alcal, Campus Universitario, E-28871 Alcal de Henares, Madrid (Spain); Bernard-Salas, J. [Department of Physical Sciences, Milton Keynes MK7 6AA (United Kingdom); Urrutia, T. [Leibniz Institut fr Astrophysik, Potsdam, An der Sternwarte 16, D-14482 Potsdam (Germany); Rigopoulou, D.; Verma, A. [Department of Physics, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH (United Kingdom); Westmoquette, M. S. [European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching bei Mnchen (Germany); Smith, H. A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Afonso, J. [Centro de Astronomia e Astrofsica da Universidade de Lisboa, Observatrio Astronmico de Lisboa, Tapada da Ajuda, 1349-018 Lisbon (Portugal); Pearson, C. [RAL Space, Rutherford Appleton Laboratory, Harwell, Oxford OX11 0QX (United Kingdom); Cormier, D. [Institut fr theoretische Astrophysik, Zentrum fr Astronomie der Universitt Heidelberg, Albert-Ueberle Str. 2, D-69120 Heidelberg (Germany); Efstathiou, A. [School of Sciences, European University Cyprus, Diogenes Street, Engomi, 1516 Nicosia (Cyprus); Borys, C. [Infrared Processing and Analysis Center, California Institute of Technology, MS 100-22, Pasadena, CA 91125 (United States); Etxaluze, M. [Departamento de Astrofsica. Centro de Astrobiologa. CSIC-INTA. Torrejn de Ardoz, E-28850 Madrid (Spain); Clements, D. L., E-mail: spoon@isc.astro.cornell.edu [Physics Department, Imperial College London, Prince Consort Road, London SW7 2AZ (United Kingdom)

    2013-10-01T23:59:59.000Z

    We report on our observations of the 79 and 119 ?m doublet transitions of OH for 24 local (z < 0.262) ULIRGs observed with Herschel-PACS as part of the Herschel ULIRG Survey (HERUS). Some OH 119 ?m profiles display a clear P-Cygni shape and therefore imply outflowing OH gas, while other profiles are predominantly in absorption or are completely in emission. We find that the relative strength of the OH emission component decreases as the silicate absorption increases. This result locates the OH outflows inside the obscured nuclei. The maximum outflow velocities for our sources range from less than 100 to ?2000 km s{sup 1}, with 15/24 (10/24) sources showing OH absorption at velocities exceeding 700 km s{sup 1} (1000 km s{sup 1}). Three sources show maximum OH outflow velocities exceeding that of Mrk231. Since outflow velocities above 500-700 km s{sup 1} are thought to require an active galactic nucleus (AGN) to drive them, about two-thirds of our ULIRG sample may host AGN-driven molecular outflows. This finding is supported by the correlation we find between the maximum OH outflow velocity and the IR-derived bolometric AGN luminosity. No such correlation is found with the IR-derived star formation rate. The highest outflow velocities are found among sources that are still deeply embedded. We speculate that the molecular outflows in these sources may be in an early phase of disrupting the nuclear dust veil before these sources evolve into less-obscured AGNs. Four of our sources show high-velocity wings in their [C II] fine-structure line profiles, implying neutral gas outflow masses of at least (2-4.5) 10{sup 8} M{sub ?}.

  6. The Infrared Medium-Deep Survey II: How to Trigger Radio-AGN? Hints from Their Environments

    E-Print Network [OSTI]

    Karouzos, Marios; Kim, Jae-Woo; Lee, Seong-Kook; Chapman, Scott; Jeon, Yiseul; Choi, Changsu; Hong, Jueun; Hyun, Minhee; Jun, Hyunsung David; Kim, Dohyeong; Kim, Yongjung; Kim, Ji Hoon; Kim, Duho; Pak, Soojong; Park, Won-Kee; Tak, Yoon Chan; Yoon, Yongmin; Edge, Alastair

    2014-01-01T23:59:59.000Z

    Activity at the centers of galaxies, during which the central supermassive black hole is accreting material, is nowadays accepted to be rather ubiquitous and most probably a phase of every galaxy's evolution. It has been suggested that galactic mergers and interactions may be the culprits behind the triggering of nuclear activity. We use near-infrared data from the new Infrared Medium-Deep Survey (IMS) and the Deep eXtragalactic Survey (DXS) of the VIMOS-SA22 field and radio data at 1.4 GHz from the FIRST survey and a deep VLA survey to study the environments of radio-AGN over an area of ~25 sq. degrees and down to a radio flux limit of 0.1 mJy and a J-band magnitude of 23 mag AB. Radio-AGN are predominantly found in environments similar to those of control galaxies at similar redshift, J-band magnitude, and U-R rest-frame absolute color. However, a sub-population of radio-AGN is found in environments up to 100 times denser than their control sources. We thus preclude merging as the dominant triggering mechan...

  7. The physics of the radio emission in the quiet side of the AGN population with the SKA

    E-Print Network [OSTI]

    Orienti, M; Giroletti, M; Giovannini, G; Panessa, F

    2014-01-01T23:59:59.000Z

    Despite targets of many multiwavelength campaigns, the main physical processes at work in AGN are still under debate. In particular the origin of the radio emission and the mechanisms involved are among the open questions in astrophysics. In the radio-loud AGN population the radio emission is linked to the presence of bipolar outflows of relativistic jets. However, the large majority of the AGN population do not form powerful highly-relativistic jets on kpc scales and are characterized by radio luminosity up to 10^23 W/Hz at 1.4 GHz, challenging our knowledge on the physical processes at the basis of the radio emission in radio-quiet objects. The main mechanisms proposed so far are synchrotron radiation from mildly relativistic mini-jets, thermal cyclo-synchrotron emission by low-efficiency accretion flow (like ADAF or ADIOS), or thermal free-free emission from the X-ray heated corona or wind. The difficulty in understanding the main mechanism involved is related to the weakness of these objects, which preclu...

  8. The evolution of the X-ray luminosity functions of unabsorbed and absorbed AGNs out to z~5

    E-Print Network [OSTI]

    Aird, James; Georgakakis, Antonis; Nandra, Kirpal; Barro, Guillermo; Perez-Gonzalez, Pablo G

    2015-01-01T23:59:59.000Z

    We present new measurements of the evolution of the X-ray luminosity functions (XLFs) of unabsorbed and absorbed Active Galactic Nuclei (AGNs) out to z~5. We construct samples containing 2957 sources detected at hard (2-7 keV) X-ray energies and 4351 sources detected at soft (0.5-2 keV) energies from a compilation of Chandra surveys supplemented by wide-area surveys from ASCA and ROSAT. We consider the hard and soft X-ray samples separately and find that the XLF based on either (initially neglecting absorption effects) is best described by a new flexible model parametrization where the break luminosity, normalization and faint-end slope all evolve with redshift. We then incorporate absorption effects, separately modeling the evolution of the XLFs of unabsorbed ($20<\\log N_H<22$) and absorbed ($22<\\log N_H<24$) AGNs, seeking a model that can reconcile both the hard- and soft-band samples. We find that the absorbed AGN XLF generally has a lower break luminosity, a higher normalization, and a steeper...

  9. The puzzle of the soft X-ray excess in AGN: absorption or reflection?

    E-Print Network [OSTI]

    Chevallier, Loc; Dumont, A M; Czerny, B; Mouchet, M; Gonalves, A C; Goosmann, R W

    2006-01-01T23:59:59.000Z

    The 2-10 keV continuum of AGN is generally well represented by a single power law. However, at smaller energies the continuum displays an excess with respect to the extrapolation of this power law, called the ''soft X-ray excess''. Until now this soft X-ray excess was attributed, either to reflection of the hard X-ray source by the accretion disk, or to the presence of an additional comptonizing medium, giving a steep spectrum. An alternative solution proposed by Gierlinski and Done (2004) is that a single power law well represents both the soft and the hard X-ray emission and the impression of the soft X-ray excess is due to absorption of a primary power law by a relativistic wind. We examine the advantages and drawbacks of reflection versus absorption models, and we conclude that the observed spectra can be well modeled, either by absorption (for a strong excess), or by reflection (for a weak excess). However the physical conditions required by the absorption models do not seem very realistic: we would pref...

  10. The puzzle of the soft X-ray excess in AGN: absorption or reflection?

    E-Print Network [OSTI]

    L. Chevallier; S. Collin; A. -M. Dumont; B. Czerny; M. Mouchet; A. C. Goncalves; R. W. Goosmann

    2006-01-19T23:59:59.000Z

    The 2-10 keV continuum of AGN is generally well represented by a single power law. However, at smaller energies the continuum displays an excess with respect to the extrapolation of this power law, called the ''soft X-ray excess''. Until now this soft X-ray excess was attributed, either to reflection of the hard X-ray source by the accretion disk, or to the presence of an additional comptonizing medium, giving a steep spectrum. An alternative solution proposed by Gierlinski and Done (2004) is that a single power law well represents both the soft and the hard X-ray emission and the impression of the soft X-ray excess is due to absorption of a primary power law by a relativistic wind. We examine the advantages and drawbacks of reflection versus absorption models, and we conclude that the observed spectra can be well modeled, either by absorption (for a strong excess), or by reflection (for a weak excess). However the physical conditions required by the absorption models do not seem very realistic: we would prefer an ''hybrid model''.

  11. Chemical Abundances in AGN Environment: X-Ray/UV Campaign on the MRK 279 Outflow

    E-Print Network [OSTI]

    Nahum Arav; Jack R. Gabel; Kirk T. Korista; Jelle S. Kaastra; Gerard A. Kriss; Ehud Behar; Elisa Costantini; C. Martin Gaskell; Ari Laor; Nalaka Kodituwakku; Daniel Proga; Masao Sako; Jennifer E. Scott; Katrien C. Steenbrugge

    2006-11-29T23:59:59.000Z

    We present the first reliable determination of chemical abundances in an AGN outflow. The abundances are extracted from the deep and simultaneous FUSE and HST/STIS observations of Mrk 279. This data set is exceptional for its high signal-to-noise, unblended doublet troughs and little Galactic absorption contamination. These attributes allow us to solve for the velocity-dependent covering fraction, and therefore obtain reliable column densities for many ionic species. For the first time we have enough such column densities to simultaneously determine the ionization equilibrium and abundances in the flow. Our analysis uses the full spectral information embedded in these high-resolution data. Slicing a given trough into many independent outflow elements yields the extra constraints needed for a physically meaningful abundances determination. We find that relative to solar the abundances in the Mrk 279 outflow are (linear scaling): carbon 2.2+/-0.7, nitrogen 3.5+/-1.1 and oxygen 1.6+/-0.8. Our UV-based photoionization and abundances results are in good agreement with the independent analysis of the simultaneous Mrk 279 X-ray spectra. This is the best agreement between the UV and X-ray analyses of the same outflow to date.

  12. On the origin of the C IV Baldwin effect in AGN

    E-Print Network [OSTI]

    Alexei Baskin; Ari Laor

    2004-03-16T23:59:59.000Z

    The origin of the luminosity dependence of the equivalent width (EW) of broad emission lines in AGN (the Baldwin effect) is not firmly established yet. We explore this question for the broad C IV \\lambda 1549 line using the Boroson & Green sample of the 87 z < 0.5 Bright Quasar Survey (BQS) quasars. Useful UV spectra of the C IV region are available for 81 of the objects, which are used to explore the dependence of the C IV EW on various emission properties. We confirm earlier results on the strong correlations of the C IV EW with some of the emission parameters which define the Boroson & Green Eigenvector 1, and with the optical to X-ray slope \\alpha_ox. In addition, we find a strong correlation of the C IV EW with the relative accretion rate, L/L_Edd. Since L/L_Edd drives some of the Eigenvector 1 correlations, it may be the primary physical parameter which drives the Baldwin effect for C IV.

  13. Radiation Pressure Supported AGN Tori with Hard X-Ray and Stellar Heating

    E-Print Network [OSTI]

    Jiming Shi; Julian H. Krolik

    2008-02-13T23:59:59.000Z

    The dynamics and structure of toroidal obscuration around AGN remain uncertain and controversial. In this paper we extend earlier work on the dynamical role of infrared radiation pressure by adding the effects of two kinds of distributed heating: Compton-heating due to hard X-rays from the nucleus and local starlight heating. We find numerical solutions to the axisymmetric hydrostatic equilibrium, energy balance, and photon diffusion equations including these effects. Within the regime of typical parameters, the two different sources of additional heating have very similar effects: the density profile within the torus becomes shallower both radially and vertically, but for plausible heating rates, there is only minor change (relative to the source-free case) in the distribution of column density with solid angle. The most interesting consequence of distributed heating is that it selects out a relatively narrow range of parameters permitting an equilibrium, particularly $(L/L_E)/\\tau_T$. We discuss the implications of both the narrowness of the permitted range and its approximate coincidence with the range inferred from observations.

  14. Relativistic spine jets from Schwarzschild black holes: "Application to AGN radioloud sources"

    E-Print Network [OSTI]

    Meliani, Z; Tsinganos, K; Trussoni, E; Cayatte, V

    2010-01-01T23:59:59.000Z

    The two types of Fanaroff-Riley radio loud galaxies, FRI and FRII, exhibit strong jets but with different properties. These differences may be associated to the central engine and/or the external medium. Aims: The AGN classification FRI and FRII can be linked to the rate of electromagnetic Poynting flux extraction from the inner corona of the central engine by the jet. The collimation results from the distribution of the total electromagnetic energy across the jet, as compared to the corresponding distribution of the thermal and gravitational energies. We use exact solutions of the fully relativistic magnetohydrodynamical (GRMHD) equations obtained by a nonlinear separation of the variables to study outflows from a Schwarzschild black hole corona. A strong correlation is found between the jet features and the energetic distribution of the plasma of the inner corona which may be related to the efficiency of the magnetic rotator. It is shown that observations of FRI and FRII jets may be partially constrained by...

  15. ENERGIES RENOVABLES NOTES FINALS 2006 COGNOMS, NOM ASSISTNCIA TREBALL NOTA

    E-Print Network [OSTI]

    Batiste, Oriol

    ENERGIES RENOVABLES NOTES FINALS 2006 COGNOMS, NOM ASSIST?NCIA TREBALL NOTA ALCOVERRO VIDAL, MARCEL

  16. Scientific note A scientific note on the partial nucleotide sequence of a US strain

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Scientific note A scientific note on the partial nucleotide sequence of a US strain of Kashmir bee bee virus / nucleotide sequence / RT-PCR Kashmir bee virus (KBV) was first isolated from a diseased sequence of the amplified product. The BLASTN search of the Nucleotide Sequence Database at the National

  17. Note and Record A note on polyvinyl chloride (PVC) pipe traps for

    E-Print Network [OSTI]

    Pretoria, University of

    Note and Record A note on polyvinyl chloride (PVC) pipe traps for sampling vegetation of traditional traps, and many are furtive (Myers et al., 2007; Pittman et al., 2008). PVC pipe traps, which and Hyperolius (see Channing, 2001; du Preez & Carruthers, 2009), may be attracted to artificial refugia of PVC

  18. GENOMIC RESOURCES NOTE Genomic Resources Notes accepted 1 February 201331 March

    E-Print Network [OSTI]

    Rieseberg, Loren

    GENOMIC RESOURCES NOTE Genomic Resources Notes accepted 1 February 201331 March 2013 GENOMIC RESOURCES DEVELOPMENT CONSORTIUM,1 MATTHEW G. KING,2 SE BASTIEN RENAUT,3 LOREN H. RIESEBERG2,4 and HEATHER C. ROWE3 1 Molecular Ecology Resources Editorial Office, 6270 University Blvd, Vancouver, BC V6T 1Z4

  19. THE SPATIAL CLUSTERING OF ROSAT ALL-SKY SURVEY AGNs. II. HALO OCCUPATION DISTRIBUTION MODELING OF THE CROSS-CORRELATION FUNCTION

    SciTech Connect (OSTI)

    Miyaji, Takamitsu; Aceves, Hector [Instituto de AstronomIa, Universidad Nacional Autonoma de Mexico, Ensenada, Baja California (Mexico); Krumpe, Mirko; Coil, Alison L., E-mail: miyaji@astrosen.unam.mx [University of California, San Diego, Center for Astrophysics and Space Sciences, 9500 Gilman Drive, La Jolla, CA 92093-0424 (United States)

    2011-01-10T23:59:59.000Z

    This is the second paper of a series that reports on our investigation of the clustering properties of active galactic nuclei (AGNs) in the ROSAT All-Sky Survey (RASS) through cross-correlation functions (CCFs) with Sloan Digital Sky Survey (SDSS) galaxies. In this paper, we apply the Halo Occupation Distribution (HOD) model to the CCFs between the RASS broad-line AGNs with SDSS luminous red galaxies (LRGs) in the redshift range 0.16 < z < 0.36 that was calculated in Paper I. In our HOD modeling approach, we use the known HOD of LRGs and constrain the HOD of the AGNs by a model fit to the CCF. For the first time, we are able to go beyond quoting merely a 'typical' AGN host halo mass, M{sub h}, and model the full distribution function of AGN host dark matter halos. In addition, we are able to determine the large-scale bias and the mean M{sub h} more accurately. We explore the behavior of three simple HOD models. Our first model (Model A) is a truncated power-law HOD model in which all AGNs are satellites. With this model, we find an upper limit to the slope ({alpha}) of the AGN HOD that is far below unity. The other two models have a central component, which has a step function form, where the HOD is constant above a minimum mass, without (Model B) or with (Model C) an upper mass cutoff, in addition to the truncated power-law satellite component, similar to the HOD that is found for galaxies. In these two models we find that the upper limits on {alpha} are still below unity, with {alpha} {approx}< 0.95 and {alpha} {approx}< 0.84 for Models B and C, respectively. Our analysis suggests that the satellite AGN occupation increases slower than, or may even decrease with, M{sub h}, in contrast to the satellite HODs of luminosity-threshold samples of galaxies, which, in contrast, grow approximately as (N{sub s}) {proportional_to} M{sup {alpha}}{sub h} with {alpha} {approx} 1. These results are consistent with observations that the AGN fraction in groups and clusters decreases with richness.

  20. The Spatial Clustering of ROSAT All-Sky Survey AGN: I. The cross-correlation function with SDSS Luminous Red Galaxies

    E-Print Network [OSTI]

    Krumpe, Mirko; Coil, Alison L

    2010-01-01T23:59:59.000Z

    We investigate the clustering properties of ~1550 broad-line AGNs at =0.25 detected in the ROSAT All-Sky Survey (RASS) through their measured cross-correlation function (CCF) with ~46000 Luminous Red Galaxies (LRGs) in the Sloan Digital Sky Survey. By measuring the cross-correlation of our AGN sample with a larger tracer set of LRGs, we both minimize shot noise errors due to the relatively small AGN sample size and avoid systematic errors due to the spatially-varying Galactic absorption that would affect direct measurements of the auto-correlation function (ACF) of the AGN sample. The measured ACF correlation length for the total RASS-AGN sample (=1.5 x 10^(44) erg/s) is r_0=4.3^{+0.4}_{-0.5} h^(-1) Mpc and the slope \\gamma=1.7^{+0.1}_{-0.1}. Splitting the sample into low and high L_X samples at L_(0.5-10 keV)=10^(44) erg/s, we detect an X-ray luminosity-dependence of the clustering amplitude at the ~2.5 \\sigma level. The low L_X sample has r_0=3.3^{+0.6}_{-0.8} h^(-1) Mpc (\\gamma=1.7^{+0.4}_{-0.3}), which is...

  1. A note on the foundations of mechanics

    E-Print Network [OSTI]

    Ricardo J. Alonso-Blanco; Jess Muoz-Daz

    2014-04-04T23:59:59.000Z

    This short note is intended to review the foundations of mechanics, trying to present them with the greatest mathematical and conceptual clarity. It was attempted to remove most of inessential, even parasitic issues, which can hide the true nature of basic principles. The pursuit of that goal results in an improved understanding of some topics such as constrained systems, the nature of time or the relativistic forces. The Sr\\"odinger and Klein-Gordon equations appear as conditions fulfilled by certain types of classical solutions of the field equations although the meaning of quantum equations is not, even remotely, exhausted by these cases. A part of this note comes from previous works.

  2. Xyce parallel electronic simulator release notes.

    SciTech Connect (OSTI)

    Keiter, Eric Richard; Hoekstra, Robert John; Mei, Ting; Russo, Thomas V.; Schiek, Richard Louis; Thornquist, Heidi K.; Rankin, Eric Lamont; Coffey, Todd Stirling; Pawlowski, Roger Patrick; Santarelli, Keith R.

    2010-05-01T23:59:59.000Z

    The Xyce Parallel Electronic Simulator has been written to support, in a rigorous manner, the simulation needs of the Sandia National Laboratories electrical designers. Specific requirements include, among others, the ability to solve extremely large circuit problems by supporting large-scale parallel computing platforms, improved numerical performance and object-oriented code design and implementation. The Xyce release notes describe: Hardware and software requirements New features and enhancements Any defects fixed since the last release Current known defects and defect workarounds For up-to-date information not available at the time these notes were produced, please visit the Xyce web page at http://www.cs.sandia.gov/xyce.

  3. Star Formation and AGN activity in Galaxies classified using the 1.6 {\\mu}m Bump and PAH features at $z = 0.4-2$

    E-Print Network [OSTI]

    Hanami, Hitoshi; Fujishiro, Naofumi; Nakanishi, Kouichiro; Miyaji, Takamitsu; Krumpe, Mirko; Umetsu, Keiichi; Ohyama, Youichi; Shim, Hyun Jin; Im, Myungshin; Lee, Hyoung Mok; Lee, Myung Gyoon; Serjeant, Stephen; White, Glenn J; Willmer, Christopher N; Goto, Tomotsugu; Oyabu, Shinki; Takagi, Toshinobu; Wada, Takehiko; Matsuhara, Hideo

    2011-01-01T23:59:59.000Z

    We have studied the star-formation and AGN activity of massive galaxies in the redshift range $z=0.4-2$, which are detected in a deep survey field using the AKARI InfraRed (IR) astronomical satellite and {\\em Subaru} telescope toward the North Ecliptic Pole (NEP). The AKARI/IRC Mid-InfraRed (MIR) multiband photometry is used to trace their star-forming activities with the Polycyclic-Aromatic Hydrocarbon (PAH) emissions, which is also used to distinguish star-forming populations from AGN dominated ones and to estimate the Star Formation Rate (SFR) derived from their total emitting IR (TIR) luminosities. In combination with analyses of their stellar components, we have studied the MIR SED features of star-forming and AGN-harboring galaxies.

  4. Notes on Effective Bandwidths Frank Kelly

    E-Print Network [OSTI]

    Kelly, Frank

    1 Notes on Effective Bandwidths Frank Kelly University of Cambridge Abstract This paper presents. The paper is published in Stochastic Networks: Theory and Applications (ed. F.P. Kelly, S. Zachary and I://www.statslab.cam.ac.uk/¸frank/ . 1 #12; 2 Frank Kelly yet a generally accepted definition of an effective bandwidth, and since other

  5. Matlab: applications en mecanique Notes de cours

    E-Print Network [OSTI]

    Hoepffner, Jérôme

    Matlab: applications en m´ecanique LA207 Notes de cours Universit´e Pierre et Marie Curie J´er^ome Hoepffner F´evrier 2009 Contents 1 Introduction 2 2 Matlab de base 2 2.1 Graphiques . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.4 Fonctions simples de matlab . . . . . . . . . . . . . . . . . . . 5 2.5 Cr´eer des fonctions

  6. Application Note (A9) Revision: A

    E-Print Network [OSTI]

    Johnsen, Snke

    measurements of light falling onto a flat surface. Such studies vary from solar UV exposure limitsApplication Note (A9) Revision: A AUGUST 1995 OPTRONIC LABORATORIES, INC. 4632 36TH STREET Orlando on the wavelength of light so the bluer wavelengths are scattered more strongly than redder. This leads

  7. Agent Notes Day 4 ~ Health Training

    E-Print Network [OSTI]

    Agent Notes Day 4 ~ Health Training In preparation for the Health Day, you could order the National Institute on Aging, National Institutes of Health. To order these free booklets, go to www in the afternoon, and edit your agenda to reflect your choices. Several HealthHints newsletters are referenced

  8. Briefing Note 2011 31 17 March 2011

    E-Print Network [OSTI]

    Pedersen, Tom

    such as billing and insurance and embodied energy/emissions in new buildings and appliances. Although all non-energyBriefing Note 2011 ­ 31 17 March 2011 Expanding the scope of British Columbia's "carbon neutral, Robyn Meyer Issue British Columbia's "carbon neutral government" mandate currently covers mainly scope 1

  9. Briefing Note 2011 30 17 March 2011

    E-Print Network [OSTI]

    Pedersen, Tom

    emissions per yeariii and help UBC reduce its future carbon tax and offset costs. Otherwise, in the short term, UBC's estimated annual carbon tax (and carbon offsets from 2010) would have increased from $289Briefing Note 2011 ­ 30 17 March 2011 The challenges of British Columbia's "carbon neutral

  10. Panel Session Notes Session II: Energy

    E-Print Network [OSTI]

    Jawitz, James W.

    with resources such as biofuels, wind and solar, however, there are problems on how to integrate these ideas due to make cars more efficient, to make solar panels store more energy to be dispersed throughout the nightPanel Session Notes Session II: Energy Moderator: Dr. Jennifer Curtis Panelists: Dr. Gary Peter

  11. NOTES A. La Rosa Physics Department

    E-Print Network [OSTI]

    NOTES A. La Rosa Physics Department P-N JUNTIONS I. HARNESSING ELECTRICAL CONDUCTIVITY Potential III.2 Application of the Fermi-Dirac distribution to semiconductors III.2.1 Intrinsic case. (Location of the chemical potential) III.2.2 Extrinsic case. (Location of the chemical potential) IV. p

  12. Ad Hoc Assessment Committee Meeting Notes

    E-Print Network [OSTI]

    O'Laughlin, Jay

    Ad Hoc Assessment Committee Meeting Notes April 17, 2008 Present: Diane Armpriest, Rula. The consensus of the group was that the list should include ad hoc committee members, associate deans and on request. The ad hoc committee will not meet again this semester. Jeanne will call a meeting

  13. 129A Lecture Notes Weak Interactions I

    E-Print Network [OSTI]

    Murayama, Hitoshi

    129A Lecture Notes Weak Interactions I 1 Nuclear -decay The nuclear -decay caused a great deal of nuclear fission, studied the spectrum and claimed that it was discrete. They argued that the spectrum may have hit upon a desperate remedy to save the "exchange theorem" of statistics and the law

  14. Nukes (notes on PFFP) Chain reactions

    E-Print Network [OSTI]

    Browder, Tom

    axis #12;Moore's Law data for memory and CPU #12;Back to Nuclear Physics The first selfNukes (notes on PFFP) Chain reactions: Must understand power laws and exponential growth "One grain = 8, 2 x 2 x 2 x 2 =16.....210=1024, ......264~1019 Will discuss and compare some aspects of nuclear

  15. CS229 Lecture notes Generative Learning algorithms

    E-Print Network [OSTI]

    Kosecka, Jana

    analysis (GDA). In this model, we'll assume that p(x|y) is distributed according to a multivariate normal discriminant analysis The first generative learning algorithm that we'll look at is Gaussian discrim- inant. In these notes, we'll talk about a different type of learning algorithm. Consider a classification problem

  16. Research Note Fast 2-flip move evaluations

    E-Print Network [OSTI]

    Hao, Jin-Kao

    problems Fred Glover1 and Jin-Kao Hao2 1 OptTek Systems, Inc. 1919 Seventh Street Boulder, CO 80302, USA glover@opttek.com 2 Laboratoire d'Etude et de Recherche en Informatique (LERIA) Université d'Angers 2. Corresponding author: Fred Glover Biographical notes: Fred Glover holds the title of Distinguished Professor

  17. Computer Note A Prototype Object Database for

    E-Print Network [OSTI]

    Neigel, Joseph E.

    Computer Note A Prototype Object Database for Mitochondrial DNA Variation J. E. NEIGEL AND P preserved. We hope to prevent further loss by establishing a community database for population genetic surveys. We explored the feasibility of a population genetics database by developing a prototype

  18. A. La Rosa Lecture Notes APPLIED OPTICS

    E-Print Network [OSTI]

    variation of the electric field of the incident radiation Since the corresponding Poynting vector is given ox , which will depend on the electric field amplitude of the incident radiation. So, we need to find electrical charge emits radiation; the latter is camouflaged in the parameter . Note 2: Equation (11

  19. Ocean and Sea Ice SAF Technical Note

    E-Print Network [OSTI]

    Stoffelen, Ad

    Ocean and Sea Ice SAF Technical Note SAF/OSI/CDOP/KNMI/TEC/RP/147 Validation of ASCAT 12.5-km winds The Ocean and Sea Ice Satellite Application Facility (OSI SAF) delivers an operational level 2 wind product produces a level 1 product with 12.5-km WVC spacing that has a resolution of approximately 25 km. Since

  20. Ocean and Sea Ice SAF Technical Note

    E-Print Network [OSTI]

    Stoffelen, Ad

    Ocean and Sea Ice SAF Technical Note SAF/OSI/CDOP2/KNMI/TEC/RP/194 Quality Control of Ku. The OSCAT level 2a data are available in near-real time and OWDP is used at KNMI to produce the Ocean and Sea Ice (OSI) SAF wind product which is made available to users. A beta version of OWDP is also

  1. Ocean and Sea Ice SAF Technical Note

    E-Print Network [OSTI]

    Stoffelen, Ad

    Ocean and Sea Ice SAF Technical Note SAF/OSI/CDOP/KNMI/TEC/TN/165 CMOD5.n - the CMOD5 GMF SAF to produce neutral winds rather than real 10m winds. Currently, the CMOD5 Geophysical Model]. KNMI subsequently produced a CMOD5.n Lookup Table and tested the retrieved Maximum Likelihood Estimator

  2. AE: Office Supplies Purchasing Stakeholder Survey Notes

    E-Print Network [OSTI]

    Sheridan, Jennifer

    AE: Office Supplies Purchasing Stakeholder Survey Notes Updated: 2/20/2012 Overview: · Survey Purchasing Factors: · 37% of people make office supplies purchases monthly, 26% weekly, and 15% quarterly used vendors for office supplies · People mostly purchase from vendors other than Staples due

  3. COMPUTER SECURITY revision list Subject Notes

    E-Print Network [OSTI]

    Chothia, Tom

    COMPUTER SECURITY revision list Subject Notes AES DES 3-DES CBC Diffie-Hellman Elgaml RSA KeyCrypt Electronic Signatures PGP Access Control Matrix Access Control Lists #12;COMPUTER SECURITY revision list for Linux Confused Deputy Problem MD5 SHA1 SHA2 / SHA256 / SHA512 SHA3 Collision attacks MAC Password

  4. Technical Note Puncture protection of PVC geomembranes______________________________________________

    E-Print Network [OSTI]

    Technical Note Puncture protection of PVC geomembranes a design procedure for estimating the puncture protection of polyvinyl chloride (PVC) geomembranes. The puncture resistance of 0.5 mm, 0.75 mm, and 1.0 mm thick PVC geomembranes was measured using the truncated

  5. Ocean Engineering 33 (2006) 22092223 Technical Note

    E-Print Network [OSTI]

    Mohseni, Kamran

    Ocean Engineering 33 (2006) 2209­2223 Technical Note Pulsatile vortex generators for low-speed maneuvering of small underwater vehicles Kamran Mohseni? Department of Aerospace Engineering Sciences, science writer). #12;1. Introduction Oceans hold the key to the origin and continuity of life on the Earth

  6. Practice Note Planning for brownfield land

    E-Print Network [OSTI]

    Practice Note Planning for brownfield land regeneration to woodland and wider green infrastructure 1FCPN022 Gail Atkinson and Kieron Doick March 2014 The regeneration of brownfield land to green of brownfield regeneration to woodland in order to inform project planning, raise awareness of lessons learnt

  7. Briefing Note 2010 19 15 September 2010

    E-Print Network [OSTI]

    Pedersen, Tom

    Briefing Note 2010 ­ 19 15 September 2010 Energy Efficiency Retrofits Case Study - Empire State incremental costs for energy efficiency (EE) retrofits than do newer buildings. Throughout New York, 43 million. #12;Three elements of the project represent best practices` for commercial energy improvements

  8. Briefing Note 2010 -17 3 September 2010

    E-Print Network [OSTI]

    Pedersen, Tom

    . BC has implemented regulations to ensure new homes are energy efficient. However, a large proportion hours. However, some programs have not been as successful. Berkeley's FIRST solar energy loan programBriefing Note 2010 - 17 3 September 2010 Evaluating Energy Efficiency Financing Programs Produced

  9. Engineering Notes Ice Shape Characterization Using

    E-Print Network [OSTI]

    Tino, Peter

    Engineering Notes Ice Shape Characterization Using Self-Organizing Maps Stephen T. McClain Baylor. Introduction DURING the validation and verification of ice accretion codes, predicted ice shapes must be compared with experimental measurements of wind-tunnel or atmospheric ice shapes. Current methods for ice

  10. Briefing Note 2011 29 4 February 2011

    E-Print Network [OSTI]

    Pedersen, Tom

    Briefing Note 2011 ­ 29 4 February 2011 Fracking in BC: Integrating climate change issues Produced - otherwise known as fracking. However the current controversy regarding fracking, including in the US options to reduce associated emissions, water, and health impacts. Fracking involves shooting a high

  11. Technical Note Improved Coronary MR Angiography Using

    E-Print Network [OSTI]

    Southern California, University of

    for approximately 450,000 deaths per year in the United States (1). For this reason, imaging of the coronary arTechnical Note Improved Coronary MR Angiography Using Wideband Steady State Free Precession at 3 state free pre- cession (SSFP) sequences use an oscillating steady state to reduce banding artifacts

  12. Fishery Notes EI Nino and Its Impact

    E-Print Network [OSTI]

    Fishery Notes EI Nino and Its Impact on Ecuadorean Fisheries Ecuadorean scientists report that an unusually powerful EI Nino in the eastern Pacific is adversely affecting Ecuador's pelagic fisheries. EI. The impact can be partic- ularly severe on larval and juvenile fish and, as a result, the effects of EI Nino

  13. Tyndall Briefing Note No. 26 Tyndall Briefing Note No. 26 June 2008

    E-Print Network [OSTI]

    Watson, Andrew

    FOR A GLOBAL EMISSIONS TRADING SCHEME (GETS) FOR INTERNATIONAL BUNKERS (AVIATION AND SHIPPING) A Briefing Note the proposal for a global emissions trading scheme (GETS) included in the Open Letter to the IPCC from

  14. CONTINUUM WAVEFUNCTION SOLVER FOR W.F. PERGER

    E-Print Network [OSTI]

    Perger, Warren F.

    and others on which it has been tested: Computers: Sun SPARC Station, IBM 4381, IBM RS6000, VAX 850 the new version has been tested: Sun OS 4.1.1, 4.1.2; IBM CMS VM/SP HOP 5.0; IBM AIX 3.1.5; VAX/VMS V5

  15. L.m, Libby and W.F. Libby

    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 ProposedUsingFunInfraredJeffersonJonathanMultimaterial MultiphysicsKwok Ko SLACB LA72--^^ir ^

  16. RADIOCARBON DATING, MEMORIES AND HOPES W.F, Libby

    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 MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared at 278, 298, and 323 K.Office of Science7a.RACETRACK AT ANLR : .

  17. Independent Study in Idaho ISI Course BSU Course NOTES

    E-Print Network [OSTI]

    Barrash, Warren

    Independent Study in Idaho ISI Course BSU Course NOTES Updated 03/2012 Boise State University Administration #12;Independent Study in Idaho ISI Course BSU Course NOTES Updated 03/2012 Boise State University

  18. OBERWOLFACH MAY 2006 NOTES BY S. PAUL SMITH

    E-Print Network [OSTI]

    Smith, S. Paul

    OBERWOLFACH MAY 2006 NOTES BY S. PAUL SMITH Abstract. These are the notes I typed during the talks SMITH (3) functoriality implies there should be an embedding of "non-commutative moduli", whatever

  19. The XMM-Newton Wide Angle Survey (XWAS): the X-ray spectrum of type-1 AGN

    E-Print Network [OSTI]

    Mateos, S; Page, M J; Watson, M G; Corral, A; Tedds, J A; Ebrero, J; Krumpe, M; Schwope, A; Ceballos, M T

    2009-01-01T23:59:59.000Z

    We discuss the broad band X-ray properties of one of the largest samples of X-ray selected type-1 AGN to date (487 objects in total), drawn from the XMM-Newton Wide Angle Survey. The objects cover 2-10 keV luminosities from ~10^{42}-10^{45} erg s^{-1} and are detected up to redshift ~4. We constrain the overall properties of the broad band continuum, soft excess and X-ray absorption, along with their dependence on the X-ray luminosity and redshift and we discuss the implications for models of AGN emission. We constrained the mean spectral index of the broad band X-ray continuum to =1.96+-0.02 with intrinsic dispersion sigma=0.27_{-0.02}^{+0.01}. The continuum becomes harder at faint fluxes and at higher redshifts and luminosities. The dependence of Gamma with flux is likely due to undetected absorption rather than to spectral variation. We found a strong dependence of the detection efficiency of objects on the spectral shape which can have a strong impact on the measured mean continuum shapes of sources at di...

  20. A Very Deep Chandra Observation of the Galaxy Group NGC 5813: AGN Shocks, Feedback, and Outburst History

    E-Print Network [OSTI]

    Randall, S W; Jones, C; Forman, W R; Bulbul, E; Clarke, T E; Kraft, R; Blanton, E L; David, L; Werner, N; Sun, M; Donahue, M; Giacintucci, S; Simionescu, A

    2015-01-01T23:59:59.000Z

    We present results from a very deep (650 ks) Chandra X-ray observation of the galaxy group NGC~5813, the deepest Chandra observation of a galaxy group to date. Earlier observations showed two pairs of cavities distributed roughly collinearly, with each pair associated with an elliptical shock front. The new observations confirm a third pair of outer cavities, collinear with the other pairs, and reveal an associated outer outburst shock at ~30 kpc. This system is therefore unique in exhibiting three cavity pairs, each associated with an unambiguous AGN outburst shock front. The implied mean kinetic power is roughly the same for each outburst, demonstrating that the average AGN kinetic luminosity can remain stable over long timescales (~50 Myr). The two older outbursts have larger, roughly equal total energies as compared with the youngest outburst, implying that the youngest outburst is ongoing. We find that the radiative cooling rate and the mean shock heating rate of the gas are well balanced at each shock f...

  1. Cosmic Ray-Dominated AGN Jets and the Formation of X-ray Cavities in Galaxy Clusters

    E-Print Network [OSTI]

    Guo, Fulai

    2010-01-01T23:59:59.000Z

    It is widely accepted that feedback from active galactic nuclei (AGN) plays a key role in the evolution of gas in groups and clusters of galaxies. Unequivocal evidence comes from quasi-spherical X-ray cavities observed near cluster centers having sizes ranging from a few to tens of kpc, some containing non-thermal radio emission. Cavities apparently evolve from the interaction of AGN jets with the intracluster medium (ICM). However, in numerical simulations it has been difficult to create such fat cavities from narrow jets. Ultra-hot thermal jets dominated by kinetic energy typically penetrate deep into the ICM, forming radially elongated cavities at large radii unlike those observed. Here, we investigate the evolution of low-density jets dominated by relativistic cosmic rays (CRs) on kpc scales. We find that, when the thermal gas density in a CR-dominated jet is sufficiently low, the jet has a correspondingly low inertia, and thus decelerates quickly in the ICM. Furthermore, CR pressure causes the jet to exp...

  2. ibm.com/redbooks iNotes Web Access

    E-Print Network [OSTI]

    environment secure Plan for capacity Front cover #12;#12;iNotes Web Access Deployment and Administration

  3. The Ultimate Messier Object Log PDF Enter Notes

    E-Print Network [OSTI]

    Oldenburg, Carl von Ossietzky Universität

    (s) Viewing Time Comments Notes Date seen Supernova remnantType Seen? 16Marathon Order # 8.4 Magnitude Crab Comments Notes Date seen Globular ClusterType Seen? 107Marathon Order # 6.5 Magnitude N/AName (if any Chart Page(s) Viewing Time Comments Notes Date seen Globular ClusterType Seen? 48Marathon Order # 6

  4. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology,Tsitika Watershed.Research Section,CoastForest Region,BCMOF, Nanaimo, BC. Extension Note EN-021. EN-021 Hydrology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Extension Note EN-021 March 2006 Forest Research

  5. LLW notes. Vol. 11, No. 1

    SciTech Connect (OSTI)

    NONE

    1996-02-01T23:59:59.000Z

    `LLW Notes` is distributed by Afton Associates, Inc. to Low-Level Radioactive Waste Forum Participants and other state and compact officials identified by those Participants to receive `LLW Notes`. The Low-Level Radioactive Waste Forum (LLW Forum) is an association of state and compact representatives, appointed by governors and compact commissions, established to facilitate state and compact implementation of the Low-Level Radioactive Waste Policy Act of 1980 and the Low-Level Radioactive Waste Policy Amendments Act of 1985 and to promote the objectives of low-level radioactive waste regional compacts. The LLW Forum provides an opportunity for state and compact officials to share information with one another and to exchange views with officials of federal agencies and other interested parties.

  6. LLW notes, Vol. 11, No. 2

    SciTech Connect (OSTI)

    NONE

    1996-03-01T23:59:59.000Z

    `LLW Notes` is distributed by Afton Associates, Inc. to Low-Level Radioactive Waste Forum Participants and other state, and compact officials identified by those Participants to receive LLW Notes. The Low-Level Radioactive Waste Forum (LLW Forum) is an association of state and compact representatives, appointed by governors and compact commissions, established to facilitate state and compact implementation of the Low-Level Radioactive Waste Policy Act of 1980 and the Low-Level Radioactive Waste Policy amendments Act of 1985 and to promote the objectives of low-level radioactive waste regional compacts. The LLW Forum provides an opportunity for state and compact officials to share information with one another and to exchange views with officials of federal agencies and other interested parties.

  7. BiographicalNotes HarryLevitt

    E-Print Network [OSTI]

    Allen, Jont

    BiographicalNotes HarryLevitt I began lifeinthe Queen VictoriaNursing Home, Johannesburg and theregistrar of births and deaths. The l a t t e ri ss t i l lw a i t i n gf o r my second registration.This was particularlydishearteninginthatlaws can be changed f a r more easily t h a n attitudes. In fact,there were many times when I f e l

  8. A Note on Hartle-Hawking Vacua

    E-Print Network [OSTI]

    Ted Jacobson

    1994-07-19T23:59:59.000Z

    The purpose of this note is to establish the basic properties--- regularity at the horizon, time independence, and thermality--- of the generalized Hartle-Hawking vacua defined in static spacetimes with bifurcate Killing horizon admitting a regular Euclidean section. These states, for free or interacting fields, are defined by a path integral on half the Euclidean section. The emphasis is on generality and the arguments are simple but formal.

  9. Notes on Black Hole Fluctuations and Backreaction

    E-Print Network [OSTI]

    B. L. Hu; Alpan Raval; Sukanya Sinha

    1999-01-05T23:59:59.000Z

    In these notes we prepare the ground for a systematic investigation into the issues of black hole fluctuations and backreaction by discussing the formulation of the problem, commenting on possible advantages and shortcomings of existing works, and introducing our own approach via a stochastic semiclassical theory of gravity based on the Einstein-Langevin equation and the fluctuation-dissipation relation for a self-consistent description of metric fluctuations and dissipative dynamics of the black hole with backreaction of its Hawking radiance.

  10. Notes 16. Analysis of tilting pad bearings

    E-Print Network [OSTI]

    San Andres, Luis

    2010-01-01T23:59:59.000Z

    NOTES 16. STATIC AND DYNAMIC FORCED PERFORMANCE OF TILTING PAD BEARINGS: ANALYSIS INCLUDING PIVOT STIFFNESS Dr. Luis San Andr?s Mast-Childs Professor August 2010 SUMMARY Work in progress ? still a lot of be done Introduction.... ANALYSIS OF TILTING PAD BEARINGS ? Luis San Andr?s (2010) 2 ANALYSIS Rocker and spherical pivots in tilting pad allow nearly frictionless pad rotation. An ideal rocker TPB, shown in Fig. 3(a), allows the pad to roll without slipping around a cylindrical...

  11. Property:Notes | 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 Solar Powerstories onFocusOskiPhilipspresentsGeothermalAreaMeanCapacityNotes Jump to:

  12. Molecular Gas, AGN Feedback and the Unusual Case of K. A. Alatalo (UC, Berkeley), T. A. Davis (Oxford University, United King-

    E-Print Network [OSTI]

    Bureau, Martin

    Molecular Gas, AGN Feedback and the Unusual Case of NGC1266 K. A. Alatalo (UC, Berkeley), T. A effort. It remarkably hosts about 109 M of molecular gas and has a spectrum that exhibits extended wings and revealed that the bulk of the gas is concentrated within 100 pc of the nucleus. Combined with the presence

  13. On the nature of the z=0 X-ray absorbers: II. The contrast between local and AGN host galaxy absorption

    E-Print Network [OSTI]

    Rik J. Williams; Smita Mathur; Fabrizio Nicastro

    2007-09-24T23:59:59.000Z

    We search for highly-ionized gas near three AGN host galaxies using the Chandra low-energy transmission grating spectrograph. Strong absorption lines from such gas are seen at z=0, most likely from one or more of the following components: (1) a Galactic corona, (2) the Local Group medium, and (3) an extended warm-hot intergalactic medium (WHIM) filament passing through our local overdensity. Since AGNs reside within host galaxies that are also expected to sit within cosmically overdense regions, similar absorption resulting from these three components should appear at the AGN redshifts as well. However, no such absorption is seen. The lack of strong absorption lines is likely a result of the gas in these host galaxies and surrounding galaxy clusters being much hotter, and hence more highly ionized, than the gas in the Local Group+Galaxy system. We conclude that WHIM filaments produce no measurable absorption lines at the AGN redshifts, and therefore contribute at most a small fraction of the observed z=0 warm-hot gas.

  14. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Extension Note EN-007

  15. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Extension Note

  16. Queer as 3 Three Pound Notes #3

    E-Print Network [OSTI]

    Glasgow, M.F.

    1993-01-01T23:59:59.000Z

    . ?That depends, sir.? ?Aye, I suppose it would.? No-one who knew him trusted Cowley when he was smoothly plummy and so terribly mild. ?And what is it that it depends on?? ?3 STEP WE GAILY ?3 ?3 ?3 13?AS THREE ?3 NOTES by M. FAE GLASGOW Pointedly...?3 S ?AS THREE O T ENby M. FAE GLASGOW Issue Number Three in the BENT COPPERS Series ?3 S ?AS THREE O T ENby M. FAE GLASGOW Issue Number Three in the BENT COPPERS Series A Slash Zine of The Professionals OBLIQUE PUBLICATIONS P.O. BOX...

  17. Hitler's Jewish Soldiers: Notes, Bibliography and Index

    E-Print Network [OSTI]

    Rigg, Bryan Mark

    2004-09-01T23:59:59.000Z

    use among many Israeli and American Jews. 54. Steven E. Aschheim, Brothers and Strangers: The East European Jew in Ger- man and German Jewish Consciousness, 18001923 (Wisconsin, 1982), p. 3; BA-MA, BMRS, File Peter Noa, Bl. 9. 55. Aschheim, pp. 3..., Unteroizier was a higher rank and was given more responsibility than Obergefreiter (acting corporal). notes to pages 2123 [ 285 ] 35. BA-MA, BMRS, File Gerhard Fecht, Fecht an Professor Dr. Lev Kopelev, 31.01.1986 Bl. 3. 36. Gesetz-und Verordnungsblatt...

  18. Note On The Maximal Primes Gaps

    E-Print Network [OSTI]

    N. A. Carella

    2015-02-05T23:59:59.000Z

    This note presents a result on the maximal prime gap of the form p_(n+1) - p_n 0 is a constant, for any arbitrarily small real number e > 0, and all sufficiently large integer n > n_0. Equivalently, the result shows that any short interval [x, x + y], y => C(log x)^(1+e), contains prime numbers for all sufficiently large real numbers x => x_0 unconditionally. An application demonstrates that a prime p => x > 2 can be determined in deterministic polynomial time O(log(x)^8).

  19. ConsumTechNotes2012.vp

    Gasoline and Diesel Fuel Update (EIA)

    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) " ,"Click worksheet9,1,50022,3,,,,6,1,,781Title: Telephone:shortOilCompany Level ImportsConsumptionThisNote:

  20. Property:ExplorationNotes | 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 revisionEnvReviewNonInvasiveExploration Jump to: navigation, searchEstimatedTimeMedianExplorationNotes Jump to:

  1. Manhattan Project: A Note on Sources

    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)morphinanInformation InInformation In closing,-- Energy, science,Links -ResultsLinksat5-22619WikiA NOTE ON

  2. Meeting Summary Notes | Department of Energy

    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 | DepartmentEnergyMagna: Product CapabilitiesMediaStandardsNotes Meeting

  3. Queer as 2 Three Pound Notes #2

    E-Print Network [OSTI]

    Multiple Contributors

    1991-01-01T23:59:59.000Z

    ?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3 TWO ?3 NOTES ?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3 ?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3 Issue Number Two in the BENT COPPERS Series ?3?3?3...?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3 ?AS ?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3 ?3?3?3 ?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?AS TWO ?3 NOTES?3?3?3...

  4. Balmer Line Variations in the Radio-Loud AGN PG 1512+370

    E-Print Network [OSTI]

    P. Romano; P. Marziani; D. Dultzin-Hacyan

    1997-11-30T23:59:59.000Z

    We present spectroscopic observations of the quasar PG~1512+370, covering the Hbeta line spectral range and collected at moderate resolution (2-7 A FWHM) from 1988 to 1996. The observations show that the blue wing of the Hbeta broad profile component has changed significantly in flux and shape between 1988 and 1990 and between 1995 and 1996. A displaced blue peak on the Hbeta profile, visible in 1988, but not in the 1990-1995 spectra, is revealed again in one of the spectra obtained in 1996. The blue peak (in both the 1988 and 1996 spectra) is centered at Delta v_r ~ -3000 +/- 500 km/s from the rest frame defined by the narrow component of Hbeta, and the OIII lambda4959,5007 lines. We discuss several conflicting interpretations of the data. We find that the variability of the Hbeta blue wing is consistent with Balmer line emission from regions whose motion is predominantly radial, if variations of the blue wing are a response to continuum changes. Alternatively, we note that observed Hbeta line profile variations are consistent with a variable line component as in a ``binary black hole'' scenario. More frequent observations of Hbeta are needed to distinguish among these hypotheses.

  5. A note on the Lyapunov Equation Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    A note on the Lyapunov Equation Alessandro Abate a.abate@tudelft.nl Delft Center for Systems and Control, TU Delft October 27, 2011 ­ Ac.Yr. 2011/12, 1e Sem. Q1 ­ Note ­ sc4026 #12;A. Abate Consider/12, 1e Sem. Q1 ­ Note ­ sc4026 1 #12;A. Abate Consider the following operations: AX + XAT = -Q2 AXX-1

  6. TEC/WG Communications Topic Group Conference Meeting Notes April...

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

    Meeting Notes April 19, 2000 Participants: Patricia Armijo, NTP-AL; Matt Baca, ATR; Nancy Bennett, ATR; Debby Cohen, National Safety Council; Martha Crosland, EM-22; Sam Dixion,...

  7. A Note on KKT Points of Homogeneous Programs 1'

    E-Print Network [OSTI]

    2005-07-11T23:59:59.000Z

    A Note on KKT Points of Homogeneous Programs 1'. Y. B. Zhao 2 and D. Li 3. Abstract. Homogeneous programming is an important class of optimization...

  8. A note on complexity of multistage stochastic programs

    E-Print Network [OSTI]

    Marcus de Mendes C. R. Reaiche

    2014-11-20T23:59:59.000Z

    Nov 20, 2014 ... A note on complexity of multistage stochastic programs. Marcus de Mendes C. R. Reaiche(mmcr ***at*** impa.br). Abstract: In Shapiro [2006],...

  9. Optimization Online - Note: Optimal non-homogeneous composites ...

    E-Print Network [OSTI]

    Tavakoli Rouhollah

    2012-08-29T23:59:59.000Z

    Aug 29, 2012 ... Note: Optimal non-homogeneous composites for dynamic loading revisited. Tavakoli Rouhollah (rtavakoli ***at*** sharif.ir). Abstract: The...

  10. Summary Notes from 28 May 2008 Generic Technical Issue Discussion...

    Office of Environmental Management (EM)

    1 of 8 Summary Notes from 28 May 2008 Generic Technical Issue Discussion on Estimating Waste Inventory and Waste Tank Characterization Attendees: Representatives from Department...

  11. NERSC Users Group Meeting November 9, 2004 Notes

    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 May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challengeMultiscaleLogos NERSC Logos NERSC NUG NUG 2006NotesNotesNotes Notes

  12. Herwig++ 2.0 beta release note.

    E-Print Network [OSTI]

    Gieseke, Stefan; Grellscheid, D; Ribon, Alberto; Richardson, P; Seymour, Michael H; Stephens, Phil; Webber, Bryan R

    ar X iv :h ep -p h/ 06 02 06 9v 1 8 F eb 2 00 6 Cavendish-HEP-06/05 CERN-PH-TH/2006-021 IFJPAN-IV-2006-2 IPPP/06/09 KA-TP-02-2006 February 2006 Herwig++ 2.0? Release Note S. Gieseke Institute fur Theoretische Physik, Karlsruhe E-mail: gieseke... @particle.uni-karlsruhe.de D. Grellscheid IPPP, Department of Physics, Durham University E-mail: david.grellscheid@durham.ac.uk A. Ribon PH Department, CERN E-mail: Alberto.Ribon@cern.ch P. Richardson IPPP, Department of Physics, Durham University E-mail: Peter...

  13. The dust sublimation radius as an outer envelope to the bulk of the narrow Fe Kalpha line emission in Type 1 AGN

    E-Print Network [OSTI]

    Gandhi, Poshak; Kishimoto, Makoto

    2015-01-01T23:59:59.000Z

    The Fe Kalpha emission line is the most ubiquitous feature in the X-ray spectra of active galactic nuclei (AGN), but the origin of its narrow core remains uncertain. Here, we investigate the connection between the sizes of the Fe Kalpha core emission regions and the measured sizes of the dusty tori in 13 local Type 1 AGN. The observed Fe Kalpha emission radii (R_fe) are determined from spectrally resolved line widths in X-ray grating spectra, and the dust sublimation radii (R_dust) are measured either from optical/near-infrared reverberation time lags or from resolved near-infrared interferometric data. This direct comparison shows that the dust sublimation radius forms an outer envelope to the bulk of the Fe Kalpha emission. R_fe matches R_dust well in the AGN with the best constrained line widths currently. In a significant fraction of objects without a clear narrow line core, R_fe is similar to, or smaller than the radius of the optical broad line region. These facts place important constraints on the toru...

  14. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 ACIT Meeting Notes Advisory Committee for Information Technology Meeting Notes MEETING DATE: 11. There was less emphasis on technology and more on communication and governance structure. Mary will respond as the biggest issues in next few years. Feedback included: Mobility and mobile computing (already behind curve

  15. APPARATUS AND DEMONSTRATION NOTES Jeffrey S. Dunham, Editor

    E-Print Network [OSTI]

    Afanassiev, Iakov

    . On a smaller scale, the flutter of a flag in the wind or the generation of sound by a wire are all relatedAPPARATUS AND DEMONSTRATION NOTES Jeffrey S. Dunham, Editor Department of Physics, Middlebury demonstrations, laboratory equip- ment, techniques, or materials of interest to teachers of physics. Notes on new

  16. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 ACIT Meeting Notes Advisory Committee for Information Technology Meeting Notes MEETING DATE: 11 compiling a timeline highlighting changes in the world of technology at large, as well as UCSC-specific. The committee reflected on how far technology has come (examples below). Netscape, punch cards, modem, PDP II

  17. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 ACIT Meeting Notes Advisory Committee for Information Technology Meeting Notes MEETING DATE: 12. Larrabee] Tracy Larrabee presented on her use of technology in the classroom. Her experience has been that there is the same face time and interaction as in-class education, and technology only enriches the learning

  18. FERTILISER APPLICATION IN LAND REGENERATION BPG NOTE 7

    E-Print Network [OSTI]

    and are covered in BPG Note 6: Application of sewage sludges and composts. When to apply fertiliser MineralFERTILISER APPLICATION IN LAND REGENERATION BPG NOTE 7 Best Practice Guidance for Land Regeneration to solve any mineral deficiencies that may arise later. The best way to decide whether further applications

  19. LOOSE TIPPING BPG NOTE 4 Best Practice Guidance

    E-Print Network [OSTI]

    . For further details, see BPG Note 6: Application of sewage sludges and composts. I Improved vegetationLOOSE TIPPING BPG NOTE 4 Best Practice Guidance for Land Regeneration Introduction Reinstatement-scraper method (see for example: Bending et al., 1999; Land Research Associates, 1997, 2000; Moffat and Bending

  20. COMPLETE CULTIVATION BPG NOTE 13 Best Practice Guidance

    E-Print Network [OSTI]

    of sewage sludges and composts. Danielle Sinnett Figure 1 An excavator removing soil. #12;BPG NOTE 13 PAGE 2COMPLETE CULTIVATION BPG NOTE 13 Best Practice Guidance for Land Regeneration Introduction land within the UK, where traditional soil placement techniques using dozers followed by industrial

  1. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology Hudson and Axel Anderson KEYWORDS: Water management, Coastal watersheds, hydrological modeling CITATIONPractice. ResearchSection,Coast ForestRegion, BCMOF,Nanaimo, BC. Extension Note EN-022. EN-022 Hydrology March 2006

  2. Lecture Notes: Support Tree Preconditioners for Laplacian Matrices

    E-Print Network [OSTI]

    Guattery, Steve

    Lecture Notes: Support Tree Preconditioners for Laplacian Matrices Stephen Guattery ICASE April 22 material to understand the intuition behind Gremban's support tree preconditioners, and his analysis from Chapters 3 and 4 of Gremban's Ph.D. thesis unless otherwise noted. 1 Goals for Preconditioners We

  3. BRIEFING NOTE SUMMARY OF MATTERS CONSIDERED BY THE MANAGEMENT BOARD

    E-Print Network [OSTI]

    Report. Members briefly discussed the issue of the management of capital works, noting the success projects were that: a. While much of the work of project management could be outsourced, each project1 BRIEFING NOTE SUMMARY OF MATTERS CONSIDERED BY THE MANAGEMENT BOARD ON FRIDAY, 28 APRIL 2006

  4. Hybrid optimal control Notes for CIRA course, Bertinoro 2003.

    E-Print Network [OSTI]

    Piccoli, Benedetto

    Hybrid optimal control Notes for CIRA course, Bertinoro 2003. Benedetto Piccoli # Abstract. These notes are devoted to the use of some analytical tools for hybrid optimal control. After introducing basic notations for a quite general class of hybrid systems, we state both the Hybrid Maximum Principle

  5. Plasma gun notes Here are some notes based on an idea of Paul Bellan's (see his Spheromak

    E-Print Network [OSTI]

    Brown, Michael R.

    Plasma gun notes Here are some notes based on an idea of Paul Bellan's (see his Spheromak book end C. L is an inductance per unit length and L0 is the inductance of the system before the spheromak starts to move. The spheromak is a sliding short of mass m impaled on the center electrode. The potential

  6. Atlas SCT/Pixel Grounding and Shielding Note 1 ATLAS SCT/Pixel Grounding and Shielding Note

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Atlas SCT/Pixel Grounding and Shielding Note 1 ATLAS SCT/Pixel Grounding and Shielding Note for SCT. This proposal mostly connects existing mechanical and electrical conductive #12;Atlas SCT. The barrel outer heat shield (150 µm aluminum) is the main element of the shield. #12;Atlas SCT

  7. Statistical analysis of COMPTEL maximum likelihood-ratio distributions: evidence for a signal from previously undetected AGN

    SciTech Connect (OSTI)

    Williams, O. R.; Bennett, K.; Much, R. [Astrophysics Division, ESTEC, P.O. Box 299, NL-2200 AG Noordwijk (Netherlands); Schoenfelder, V. [Max-Planck Institut fuer Extraterrestrische Physik, P.O. Box 1603, 85740 Garching (Germany); Blom, J. J. [SRON-Utrecht, Sorbonnelaan 2, NL-3584 CA Utrecht (Netherlands); Ryan, J. [Space Science Center, Univ. of New Hampshire, Durham New Hampshire 03824 (United States)

    1997-05-10T23:59:59.000Z

    The maximum likelihood-ratio method is frequently used in COMPTEL analysis to determine the significance of a point source at a given location. In this paper we do not consider whether the likelihood-ratio at a particular location indicates a detection, but rather whether distributions of likelihood-ratios derived from many locations depart from that expected for source free data. We have constructed distributions of likelihood-ratios by reading values from standard COMPTEL maximum-likelihood ratio maps at positions corresponding to the locations of different categories of AGN. Distributions derived from the locations of Seyfert galaxies are indistinguishable, according to a Kolmogorov-Smirnov test, from those obtained from ''random'' locations, but differ slightly from those obtained from the locations of flat spectrum radio loud quasars, OVVs, and BL Lac objects. This difference is not due to known COMPTEL sources, since regions near these sources are excluded from the analysis. We suggest that it might arise from a number of sources with fluxes below the COMPTEL detection threshold.

  8. Polarization from aligned atoms as a diagnostics of circumstellar, AGN and interstellar magnetic fields: II. Atoms with Hyperfine Structure

    E-Print Network [OSTI]

    Huirong Yan; A. Lazarian

    2006-11-09T23:59:59.000Z

    We show that atomic alignment presents a reliable way to study topology of astrophysical magnetic fields. The effect of atomic alignment arises from modulation of the relative population of the sublevels of atomic ground state pumped by anisotropic radiation flux. As such aligned atoms precess in the external magnetic field and this affects the properties of the polarized radiation arising from both scattering and absorption by the atoms. As the result the polarizations of emission and absorption lines depend on the 3D geometry of the magnetic field as well as the direction and anisotropy of incident radiation. We consider a subset of astrophysically important atoms with hyperfine structure. For emission lines we obtain the dependencies of the direction of linear polarization on the directions of magnetic field and the incident pumping radiation. For absorption lines we establish when the polarization is perpendicular and parallel to magnetic field. For both emission and absorption lines we find the dependence on the degree of polarization on the 3D geometry of magnetic field. We claim that atomic alignment provides a unique tool to study magnetic fields in circumstellar regions, AGN, interplanetary and interstellar medium. This tool allows studying of 3D topology of magnetic fields and establish other important astrophysical parameters. We consider polarization arising from both atoms in the steady state and also as they undergo individual scattering of photons. We exemplify the utility of atomic alignment for studies of astrophysical magnetic fields by considering a case of Na alignment in a comet wake.

  9. Are Boltzmann Plots of Hydrogen Balmer lines a tool for identifying a subclass of S1 AGN?

    E-Print Network [OSTI]

    Rafanelli, P; Cracco, V; Di Mille, F; Ili?, D; La Mura, G; Popovi?, L ?

    2013-01-01T23:59:59.000Z

    It is becoming clear that we can define two different types of nearby AGN belonging to the Seyfert 1 class (S1), on the basis of the match of the intensities of their Broad Balmer Lines (BBL) with the Boltzmann Plots (BP). These two types of S1 galaxies, that we call BP-S1 and NoBP-S1, are characterized, in first approximation, by Broad Line Regions (BLR) with different structural and physical properties. In this communication, we show that these features can be well pointed out by a multi-wavelength analysis of the continuum and of the broad recombination Hydrogen lines, that we carry out on a sample of objects detected at optical and X-ray frequencies. The investigation is addressed to verify whether BP-S1 are the ideal candidates for the study of the kinematical and structural properties of the BLR, in order to derive reliable estimates of the mass of their central engine and to constrain the properties of their nuclear continuum spectrum.

  10. An axisymmetric hydrodynamical model for the torus wind in AGN. II: X-ray excited funnel flow

    E-Print Network [OSTI]

    A. Dorodnitsyn; T. Kallman; D. Proga

    2008-06-23T23:59:59.000Z

    We have calculated a series of models of outflows from the obscuring torus in active galactic nuclei (AGN). Our modeling assumes that the inner face of a rotationally supported torus is illuminated and heated by the intense X-rays from the inner accretion disk and black hole. As a result of such heating a strong biconical outflow is observed in our simulations. We calculate 3-dimensional hydrodynamical models, assuming axial symmetry, and including the effects of X-ray heating, ionization, and radiation pressure. We discuss the behavior of a large family of these models, their velocity fields, mass fluxes and temperature, as functions of the torus properties and X-ray flux. Synthetic warm absorber spectra are calculated, assuming pure absorption, for sample models at various inclination angles and observing times. We show that these models have mass fluxes and flow speeds which are comparable to those which have been inferred from observations of Seyfert 1 warm absorbers, and that they can produce rich absorption line spectra.

  11. An axisymmetric hydrodynamical model for the torus wind in AGN. II: X-ray excited funnel flow

    E-Print Network [OSTI]

    Dorodnitsyn, A; Proga, D

    2008-01-01T23:59:59.000Z

    We have calculated a series of models of outflows from the obscuring torus in active galactic nuclei (AGN). Our modeling assumes that the inner face of a rotationally supported torus is illuminated and heated by the intense X-rays from the inner accretion disk and black hole. As a result of such heating a strong biconical outflow is observed in our simulations. We calculate 3-dimensional hydrodynamical models, assuming axial symmetry, and including the effects of X-ray heating, ionization, and radiation pressure. We discuss the behavior of a large family of these models, their velocity fields, mass fluxes and temperature, as functions of the torus properties and X-ray flux. Synthetic warm absorber spectra are calculated, assuming pure absorption, for sample models at various inclination angles and observing times. We show that these models have mass fluxes and flow speeds which are comparable to those which have been inferred from observations of Seyfert 1 warm absorbers, and that they can produce rich absorp...

  12. Are AGN Broad Emission Lines Formed by Discrete Clouds? --- Analysis of Keck High Resolution Spectroscopy of NGC 4151

    E-Print Network [OSTI]

    Nahum Arav; Thomas A. Barlow; Ari Laor; Wallace L. W. Sargent; Roger D. Blandford

    1998-01-04T23:59:59.000Z

    We search for a direct signature of discrete ''clouds'' in the broad line region (BLR) of the Seyfert galaxy NGC 4151. For this purpose we apply cross correlation (CC) analysis to a high resolution KECK spectrum of the galaxy. No such signature is found in the data. In order for cloud models to be compatible with this result, there must be at least $\\sim3\\times10^7$ emitting clouds in the BLR, where the limit is based on simulation of a homogeneous cloud population. More realistic distributions increase the lower limit to above $10^8$. These numbers are an order of magnitude improvement on our previous limit from Mrk 335, where the improvement comes from higher S/N, broader lines, and refined simulations. Combined with the predicted upper limit for the number of emitting clouds in NGC 4151 ($10^6-10^7$), the derived lower limit puts a strong constraint on the cloud scenario in the BLR of this object. Similar constraints can be paled on models where the emission originates in streams and sheets. Thus, this investigation suggests that the BELs in NGC 4151, and by extension in all AGNs, are not made of an ensemble of discrete independent emitters.

  13. The Need For High Resolution In Studies Of The 3-D Magnetic Field Structure Of AGN Jets

    E-Print Network [OSTI]

    Shane P. O'Sullivan; Denise C. Gabuzda

    2008-01-31T23:59:59.000Z

    We are using "broadband" (4.6 to 43 GHz) multi-frequency VLBA polarization observations of compact AGN to investigate the 3-D structure of their jet magnetic (B) fields. Observing at several frequencies, separated by short and long intervals, enables reliable determination of the distribution of Faraday Rotation, and thereby the intrinsic B field structure. Transverse Rotation Measure (RM) gradients were detected in the jets of 0954+658 and 1418+546, providing evidence for the presence of a helical B field surrounding the jet. The RM in the core regions of 2200+420 (BL Lac), 0954+658 and 1418+546 display different signs in different frequency-intervals (on different spatial scales); we suggest an explanation for this in terms of modest bends in a helical B field surrounding their jets. In future, polarization observations with a combination of VSOP-2 at 8, 22 and 43 GHz and ground arrays at frequencies with corresponding resolution will help map out the distributions of Faraday rotation, spectral index and the 3-D B field structure both across the jet and closer to the central engine, providing strong constraints for any jet B field models.

  14. BNL ALARA Center: ALARA Notes, No. 9

    SciTech Connect (OSTI)

    Khan, T.A.; Xie, J.W.; Beckman, M.C. [eds.] [and others

    1994-02-01T23:59:59.000Z

    This issue of the Brookhaven National Laboratory`s Alara Notes includes the agenda for the Third International Workshop on ALARA and specific instructions on the use of the on-line fax-on-demand service provided by BNL. Other topics included in this issue are: (1) A discussion of low-level discharges from Canadian nuclear plants, (2) Safety issues at French nuclear plants, (3) Acoustic emission as a means of leak detection, (4) Replacement of steam generators at Doel-3, Beaznau, and North Anna-1, (5) Remote handling equipment at Bruce, (6) EPRI`s low level waste program, (7) Radiation protection during concrete repairs at Savannah River, (8) Reactor vessel stud removal/repair at Comanche Peak-1, (9) Rework of reactor coolant pump motors, (10) Restoration of service water at North Anna-1 and -2, (11) Steam generator tubing problems at Mihama-1, (12) Full system decontamination at Indian Point-2, (13) Chemical decontamination at Browns Ferry-2, and (14) Inspection methodolody in France and Japan.

  15. NERSC Users Group Meeting Nov. 15, 1999 Notes

    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 May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challengeMultiscaleLogos NERSC Logos NERSC NUG NUG 2006NotesNotes Notes

  16. Clinical experience with a multifunctional, flexible surgery system for endolumenal, single-port, and NOTES procedures

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    closure in human NOTES procedures. SAGES 2008 poster pre-single-port, and NOTES procedures Santiago Horgan Karidifferent therapeutic procedures, all with the use of a

  17. E-Print Network 3.0 - advanced development note Sample Search...

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

    note Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced development note Page: << < 1 2 3 4 5 > >> 1 Academic Support & Information Literacy...

  18. NOTES ON MACDONALD POLYNOMIALS AND THE GEOMETRY OF HILBERT SCHEMES

    E-Print Network [OSTI]

    Haiman, Mark D.

    NOTES ON MACDONALD POLYNOMIALS AND THE GEOMETRY OF HILBERT SCHEMES MARK HAIMAN (mhaiman words: Symmetric functions, Macdonald polynomials, Hilbert schemes 2000 Mathematics Subject combinatorial problems we solve are (1) we prove the positivity conjecture for Macdonald polynomials, and (2) we

  19. NIST Technical Note 1637 Modeling the Effects of Outdoor Gasoline

    E-Print Network [OSTI]

    Bentz, Dale P.

    Carbon Monoxide Exposures Liangzhu (Leon) Wang Steven J Emmerich #12;NIST Technical Note 1637 Modeling Steven J Emmerich Building Environment Division Building and Fire Research Laboratory August 2009 U

  20. analysis working note: Topics by E-print Network

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

    two telescope systems. Lloyd, Seth 2015-01-01 40 Notes 07. Thermal analysis of finite length journal bearings including fluid inertia Texas A&M University - TxSpace Summary: 1...

  1. SOFTWARE LOCALIZATION: NOTES ON TECHNOLOGY AND CULTURE Kenneth Keniston

    E-Print Network [OSTI]

    Keniston, Kenneth

    , Technology, and Society at the Massachusetts Institute of Technology. Copyright 1997, Kenneth Keniston. DRAFT in Science, Technology, and Society Massachusetts Institute of Technology Cambridge, Massachusetts 02139SOFTWARE LOCALIZATION: NOTES ON TECHNOLOGY AND CULTURE Kenneth Keniston Kenneth Keniston is Andrew

  2. Supplementary Notes for Actuarial Mathematics for Life Contingent ...

    E-Print Network [OSTI]

    2011-04-04T23:59:59.000Z

    In this note we aim to provide the additional material required to meet the learning ... 2.3 Deferred Acquisition Expenses and Modified Premium Reserves . . . . . . . . . 13 ...... balance will be deducted from the policyholder's account value. 6

  3. Quantum theory of gravitational collapse (lecture notes on quantum conchology)

    E-Print Network [OSTI]

    Petr Hajicek

    2002-04-15T23:59:59.000Z

    Preliminary version No.~2 of the lecture notes for the talk ``Quantum theory of gravitational collapse'' given at the 271. WE-Heraeus-Seminar ``Aspects of Quantum Gravity'' at Bad Honnef, 25 February--1 March 2002

  4. Supplementary notes for Math 265 on complex eigenvalues ...

    E-Print Network [OSTI]

    1998-11-30T23:59:59.000Z

    is the topic of these notes. 2) A does not have enough eigenvectors (we cannot pick a basis for 2-space consisting of eigenvectors of A). This happens ... Page 2

  5. MC$^2$: Boosted AGN and star-formation activity in CIZA J2242.8+5301, a massive post-merger cluster at z=0.19

    E-Print Network [OSTI]

    Sobral, David; Dawson, William A; Wittman, David; Jee, James; Rttgering, Huub; van Weeren, Reinout J; Brggen, Marcus

    2015-01-01T23:59:59.000Z

    Cluster mergers may play a fundamental role in the formation and evolution of cluster galaxies. Stroe et al. (2014) revealed unexpected over-densities of candidate H$\\alpha$ emitters near the ~1 Mpc-wide shock fronts of the massive (~2x10$^{15}$M$_{\\odot}$) "Sausage" merging cluster, CIZA J2242.8+5301. We used Keck/DEIMOS and WHT/AF2 to confirm 83 H$\\alpha$ emitters in and around the merging cluster. We find that cluster star-forming galaxies in the hottest X-ray gas and/or in the cluster sub-cores (away from the shock fronts) show high [SII]6716/[SII]6761 and high [SII]6716/H$\\alpha$, implying very low electron densities (2.5 Mpc). This suggests that the shock front may have triggered remaining metal-rich gas which galaxies were able to retain into forming stars. Our observations show that the merger of impressively massive (~10$^{15}$M$_\\odot$) clusters can provide the conditions for significant star-formation and AGN activity, but, as we witness strong feedback by star-forming galaxies and AGN (and given h...

  6. First X-ray-Based Statistical Tests for Clumpy-Torus Models: Eclipse Events from 230 Years of Monitoring of Seyfert AGN

    E-Print Network [OSTI]

    Markowitz, Alex; Nikutta, Robert

    2014-01-01T23:59:59.000Z

    We present an analysis of multi-timescale variability in line-of-sight X-ray absorbing gas as a function of optical classification in a large sample of Seyfert AGN to derive the first X-ray statistical constraints for clumpy-torus models. We systematically search for discrete absorption events in the vast archive of RXTE monitoring of dozens of nearby type I and Compton-thin type II AGN. We are sensitive to discrete absorption events due to clouds of full-covering, neutral or mildly ionized gas with columns <~ 10^(22-25) cm^-2 transiting the line of sight. We detect 12 eclipse events in 8 objects, roughly tripling the number previously published from this archive. Peak column densities span ~ 4-26 x 10^22 cm^-2. Event durations span hours to months. The column density profile for an eclipsing cloud in NGC 3783 is doubly spiked, possibly indicating a cloud that is being tidally sheared. We infer the clouds' distances from the black hole to span ~0.3 -140 x 10^4 R_g. In seven objects, the clouds' distances a...

  7. ALMA DETECTION OF THE VIBRATIONALLY EXCITED HCN J = 4-3 EMISSION LINE IN THE AGN-HOSTING LUMINOUS INFRARED GALAXY IRAS 205514250

    SciTech Connect (OSTI)

    Imanishi, Masatoshi [Subaru Telescope, 650 North A'ohoku Place, Hilo, Hawaii, 96720 (United States); Nakanishi, Kouichiro, E-mail: masa.imanishi@nao.ac.jp [Joint ALMA Observatory, Alonso de Crdova 3107, Vitacura 763-0355, Santiago de Chile (Chile)

    2013-10-01T23:59:59.000Z

    We present results from our ALMA Cycle 0 observations, at the frequencies around the HCN, HCO{sup +}, and HNC J = 4-3 transition lines, of the luminous infrared galaxy IRAS 205514250 at z = 0.043, which is known to host an energetically important obscured active galactic nucleus (AGN). In addition to the targeted HCN, HCO{sup +}, and HNC J = 4-3 emission lines, two additional strong emission lines are seen, which we attribute to H{sub 2}S and CH{sub 3}CN(+CCH). The HCN-to-HCO{sup +} J = 4-3 flux ratio (?0.7) is higher than in the other starburst-dominated galaxy (?0.2) observed in our ALMA Cycle 0 program. We tentatively (?5?) detected the vibrationally excited (v {sub 2} = 1) HCN J = 4-3 (l = 1f) emission line, which is important for testing an infrared radiative pumping scenario for HCN. This is the second detection of this molecular transition in external galaxies. The most likely reason for this detection is not only the high flux of this emission line, but also the small molecular line widths observed in this galaxy, suggesting that vibrational excitation of HCN may be relatively common in AGN-hosting galaxies.

  8. Submm-bright X-ray absorbed QSOs at z~2: insights into the co-evolution of AGN and star-formation

    E-Print Network [OSTI]

    Khan-Ali, A; Page, M J; Stevens, J A; Mateos, S; Symeonidis, M; Orjales, J M Cao

    2015-01-01T23:59:59.000Z

    We have assembled a sample of 5 X-ray-absorbed and submm-luminous type 1 QSOs at $z \\sim 2$ which are simultaneously growing their central black holes through accretion and forming stars copiously. We present here the analysis of their rest-frame UV to submm Spectral Energy Distributions (SEDs), including new Herschel data. Both AGN (direct and reprocessed) and Star Formation (SF) emission are needed to model their SEDs. From the SEDs and their UV-optical spectra we have estimated the masses of their black holes $M_{BH}\\sim 10^{9}-10^{10}\\,M_{\\odot}$, their intrinsic AGN bolometric luminosities $L_{BOL}\\sim(0.8 - 20)\\times 10^{13} L_{\\odot}$, Eddington ratios $L_{BOL}/L_{Edd}\\sim 0.1 - 1.1$ and bolometric corrections $L_{BOL}/L_{X,2-10}\\sim 30 - 500$. These values are common among optically and X-ray-selected type 1 QSOs (except for RX~J1249), except for the bolometric corrections, which are higher. These objects show very high far-infrared luminosities $L_{FIR}\\sim$ (2 - 8)$\\times10^{12}\\,M_{\\odot}$ and Star...

  9. NUCLEAR X-RAY PROPERTIES OF THE PECULIAR RADIO-LOUD HIDDEN AGN 4C+29.30

    SciTech Connect (OSTI)

    Sobolewska, M. A.; Siemiginowska, Aneta; Migliori, G.; Evans, D. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Stawarz, L. [Institute of Space and Astronautical Science, JAXA, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510 (Japan); Jamrozy, M. [Astronomical Observatory, Jagiellonian University, ul. Orla 171, 30-244 Krakow (Poland); Cheung, C. C., E-mail: msobolewska@cfa.harvard.edu [National Research Council Research Associate, National Academy of Sciences, Washington, DC 20001 (United States)

    2012-10-20T23:59:59.000Z

    We present results from a study of nuclear emission from a nearby radio galaxy, 4C+29.30, over a broad 0.5-200 keV X-ray band. This study used new XMM-Newton ({approx}17 ks) and Chandra ({approx}300 ks) data, and archival Swift/BAT data from the 58 month catalog. The hard (>2 keV) X-ray spectrum of 4C+29.30 can be decomposed into an intrinsic hard power law ({Gamma} {approx} 1.56) modified by a cold absorber with an intrinsic column density N {sub H,z} {approx} 5 Multiplication-Sign 10{sup 23} cm{sup -2}, and its reflection (|{Omega}/2{pi}| {approx} 0.3) from a neutral matter including a narrow iron K{alpha} emission line at a rest-frame energy {approx}6.4 keV. The reflected component is less absorbed than the intrinsic one with an upper limit on the absorbing column of N {sup refl} {sub H,z} < 2.5 Multiplication-Sign 10{sup 22} cm{sup -2}. The X-ray spectrum varied between the XMM-Newton and Chandra observations. We show that a scenario invoking variations of the normalization of the power law is favored over a model with variable intrinsic column density. X-rays in the 0.5-2 keV band are dominated by diffuse emission modeled with a thermal bremsstrahlung component with temperature {approx}0.7 keV, and contain only a marginal contribution from the scattered power-law component. We hypothesize that 4C+29.30 belongs to a class of 'hidden' active galactic nuclei containing a geometrically thick torus. However, unlike the majority of hidden AGNs, 4C+29.30 is radio-loud. Correlations between the scattering fraction and Eddington luminosity ratio, and between black hole mass and stellar velocity dispersion, imply that 4C+29.30 hosts a black hole with {approx}10{sup 8} M {sub Sun} mass.

  10. LLW Notes, vol. 9, no. 1. February/March 1994

    SciTech Connect (OSTI)

    NONE

    1994-03-01T23:59:59.000Z

    LLW Notes is published ten times each year and is distributed to Low- Level Radioactive Waste Forum Participants and other state and compact officials identified by those Participants to receive LLW Notes. The Low-Level Radioactive Waste Forum is an association of representatives of states and compacts established to facilitate state and compact commission implementation of the Low-Level Radioactive Waste Policy Amendments Act of 1985 and to promote the objectives of low-level radioactive waste regional compacts. The Forum provides an opportunity for states and compacts to share information with one another and to exchange views with officials of federal agencies.

  11. NERSC Users Group Meeting May 29-30, 2003 Notes

    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 May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challengeMultiscaleLogos NERSC Logos NERSC NUG NUG 2006Notes NUGNotes Notes

  12. Agnes von Matuschka Grndungsservice

    E-Print Network [OSTI]

    Wichmann, Felix

    Spielklassiker wie UFO, Jagged Alliance, Incubation und Fallout. In ,,Götterdämmerung: Iron Dawn" kämpfen zwei

  13. AGN and Cooling Flows

    E-Print Network [OSTI]

    James Binney

    2001-03-23T23:59:59.000Z

    For two decades the steady-state cooling-flow model has dominated the literature of cluster and elliptical-galaxy X-ray sources. For ten years this model has been in severe difficulty from a theoretical point of view, and it is now coming under increasing pressure observationally. For two decades the steady-state cooling-flow model has dominated the literature of cluster and elliptical-galaxy X-ray sources. For ten years this model has been in severe difficulty from a theoretical point of view, and it is now coming under increasing pressure observationally. A small number of enthusiasts have argued for a radically different interpretation of the data, but had little impact on prevailing opinion because the unsteady heating picture that they advocate is extremely hard to work out in detail. Here I explain why it is difficult to extract robust observational predictions from the heating picture. Major problems include the variability of the sources, the different ways in which a bi-polar flow can impact on X-ray emission, the weakness of synchrotron emission from sub-relativistic flows, and the sensitivity of synchrotron emission to a magnetic field that is probably highly localized.

  14. Technical Notes Determination of Condensed Tannin Monomers in

    E-Print Network [OSTI]

    Hernes, Peter J.

    Technical Notes Determination of Condensed Tannin Monomers in Environmental Samples by Capillary Gas Chromatography of Acid Depolymerization Extracts Peter J. Hernes*, and John I. Hedges School-level quantification of condensed tannin is described that uses acid depolymerization and carbocation capture

  15. BRIEFING NOTE SUMMARY OF MATTERS CONSIDERED BY THE MANAGEMENT BOARD

    E-Print Network [OSTI]

    provided comparative, sector-wide statistical information. 7. The Management Board agreed that Health a presentation on utility costs from Mr Roalfe and noted that, because of the increases in global energy costs consumption across the College. REQUEST FOR FUNDING FOR IMS PROGRAMME "APPLICATIONS OF MATHEMATICS

  16. Research Note True Metabolizable Energy for Seeds of Common Moist-

    E-Print Network [OSTI]

    Dugger, Bruce

    for fecal and urinary energy of nonfood origin (Sibbald 1976, Miller and Reinecke 1984). In this paper, weResearch Note True Metabolizable Energy for Seeds of Common Moist- Soil Plant Species BRUCE D energy (TME) value of food is important for constructing bioenergetic models. We estimated gross energy

  17. Note on the size of binary Armstrong codes Aart Blokhuis

    E-Print Network [OSTI]

    Brouwer, Andries E.

    Note on the size of binary Armstrong codes Aart Blokhuis , Andries Brouwer, Attila Sali April 19, 2012 Abstract We show for binary Armstrong codes Arm(2, k, n) that asymptotically n/k 1.224, while) for all admissible n. Keywords: coding theory; databases; Armstrong codes AMS subject classification: 94B

  18. Note on the size of binary Armstrong codes Aart Blokhuis

    E-Print Network [OSTI]

    Brouwer, Andries E.

    Note on the size of binary Armstrong codes Aart Blokhuis , Andries Brouwer, Attila Sali February 20, 2012 Abstract We show for binary Armstrong codes Arm(2, k, n) that asymptotically n/k 1.224, while) for all admissible n. Keywords: coding theory; databases; Armstrong codes AMS subject classification: 94B

  19. MATH 1503 Introduction to Linear Algebra Notes on MATLAB

    E-Print Network [OSTI]

    Monson, Barry

    1 MATH 1503 Introduction to Linear Algebra Notes on MATLAB MATLAB (`MATrix LABoratory as a programming language. MATLAB is available to UNB students on the University's Novell network ­ click on the `More Applications' icon, then click on the `MATLAB' icon. More than one release of MATLAB may

  20. Research Note Effects of Coastal Lighting on Foraging Behavior

    E-Print Network [OSTI]

    Branch, Lyn C.

    Research Note Effects of Coastal Lighting on Foraging Behavior of Beach Mice BRITTANY L. BIRD, LYN of artificial light into wildlife habitat represents a rapidly expanding form of human encroachment, particularly in coastal systems. Light pollution alters the behavior of sea turtles during nesting; therefore

  1. A note on independent-disjoint analysis of network reliability

    E-Print Network [OSTI]

    Traldi, Lorenzo

    A note on independent-disjoint analysis of network reliability R. E. Andersen Department include both SDPs and OBDDs, and are well suited for network reliability computations. Keywords. Sum of disjoint products; Binary decision diagram; Net- work reliability; Boolean function 1 #12;Network

  2. 1 ACIT Meeting Notes ACTION ITEMS ASSIGNED TO DELIVER BY

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    -12PM 212 Kerr Hall Advisory Committee for Information Technology Meeting Notes MEETING DATE: 5. OR is currently doing more research development, as well as drawing in Silicon Valley Initiatives. Mobile Apps [P Designs) is to make sure system design and case management tool are configured correctly and that software

  3. RIS-M-2411 A NOTE ON WIND GENERATOR INTERACTION

    E-Print Network [OSTI]

    #12;~ y . RIS?-M-2411 A NOTE ON WIND GENERATOR INTERACTION N.O. Jensen Abstract. A simple model for the wake behind a wind generator is given. The model is compared to some full scale experimen- tal results. The model is then used in an example where the production from a circular cluster of 10 wind generators

  4. SCIENTIFIC NOTE Variations in daily quality assurance dosimetry from device

    E-Print Network [OSTI]

    Yu, K.N.

    SCIENTIFIC NOTE Variations in daily quality assurance dosimetry from device levelling, feet procedures are an essential part of radiotherapy medical physics. Devices such as the Sun Nuclear, DQA3 are effective tools for analysis of daily dosimetry including flatness, symmetry, energy, field size and central

  5. NOTE AND COMMENT Liza S. Comita Gregory R. Goldsmith

    E-Print Network [OSTI]

    Goldsmith, Greg

    NOTE AND COMMENT Liza S. Comita ? Gregory R. Goldsmith Stephen P. Hubbell Intensive research-re- lated disturbance between events, leaving little or no L. S. Comita Department of Plant Biology of Panama L. S. Comita (&) Department of Ecology, Evolution, and Environmental Biology, Columbia University

  6. Note d'information Contribution la matrise des problmes

    E-Print Network [OSTI]

    Boyer, Edmond

    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

  7. NOTES PH-315 A. La Rosa P-N JUNTIONS

    E-Print Network [OSTI]

    La Rosa, Andres H.

    NOTES PH-315 A. La Rosa P-N JUNTIONS I. HARNESSING ELECTRICAL CONDUCTIVITY IN SEMICONDUCTOR of the JUNCTION _____________________________________________________________ I. HARNESSING ELECTRICAL-material III. QUANTUM STATISTICS of ELECTRONS III.1 The Fermi-Dirac Distribution and the Chemical Potential III

  8. Technical Note Theoretical analysis of film condensation heat transfer

    E-Print Network [OSTI]

    Zhao, Tianshou

    transfer coefficient of steam condensing inside an equilateral triangular channel is found. They divided the condensation area on the micro-fin surface into the flooded and the unflooded areasTechnical Note Theoretical analysis of film condensation heat transfer inside vertical mini

  9. Approved Test Procedures Version 1.1 Release Notes

    E-Print Network [OSTI]

    Approved Test Procedures Version 1.1 Release Notes 1 Change Reason for Change 302.a drugdrug, drug allergy In the Informative Test Description section Added clarification to the example. 302.c Problem List In the Informative Test Description section Added the sentence "The test also

  10. Software Verification and Testing Lecture Notes: Testing I

    E-Print Network [OSTI]

    Struth, Georg

    Software Verification and Testing Lecture Notes: Testing I #12;Motivation verification: · powerful · automated techniques rather limited testing: (as "poor man's verification") · can only detect presence mathematical skills 1 #12;Motivation verification vs testing: · verification used often in early stages

  11. A note on geodesic foliations on the torus Pierre Mounoud

    E-Print Network [OSTI]

    Mounoud, Pierre

    A note on geodesic foliations on the torus Pierre Mounoud R´esum´e : Nous ´etudions les propri´et´es de leur feuilletages orthogonaux. Abstract: We look at geodesic foliations on the Lorentzian torus with leaves of different kind. We prove that they do not exist if the torus is geodesically

  12. A CAUTIONARY NOTE REGARDING THE DATA INTEGRITY CAPACITY

    E-Print Network [OSTI]

    Irvine, Cynthia E.

    assurance components, as well as the integrity of data read from high assurance repositories and displayedA CAUTIONARY NOTE REGARDING THE DATA INTEGRITY CAPACITY OF CERTAIN SECURE SYSTEMS Cynthia E. Irvine of architecture. We discuss the general integrity property that systems can only be trusted to manage modi able

  13. National Radio Astronomy Observatory Electronics Division Technical Note No. 219

    E-Print Network [OSTI]

    Groppi, Christopher

    1 National Radio Astronomy Observatory Electronics Division Technical Note No. 219 Measurements of Automotive Radar Emissions received by a Radio Astronomy Observatory Darrel Emerson (National Radio Astronomy (Continental Corporation, A.D.C. Automotive Distance Control Systems GmbH, Germany), Juergen

  14. Electron Cloud at Injection Region BNL/SNS TECHNICAL NOTE

    E-Print Network [OSTI]

    's tangential plane. The stripped electrons from the injection beam cause about 145W thermal damage. They haveElectron Cloud at Injection Region BNL/SNS TECHNICAL NOTE NO. 143 Y.Y. Lee, G. Mahler, W. Meng, D, NEW YORK 11973 #12;1 ELECTRON CLOUD AT INJECTION REGEION Y.Y. Lee, G. Mahler, W. Meng, D. Raparia, L

  15. Notes on non-commutative integration Antoine Flattot

    E-Print Network [OSTI]

    Flattot, Antoine

    [5], who defined the Lp spaces for 1 p and Stinespring [14] and culminated with the article of Nelson [7] who used the convergence in measure introduced by Stinespring to give a nice definition of Lp spaces. It is interesting to note that actually the articles of Kunze and Stinespring were part

  16. NSF ITR Project General Notes on Trypsin Test Procedure

    E-Print Network [OSTI]

    Kaber, David B.

    NSF ITR Project Fall 2004 General Notes on Trypsin Test Procedure: Automated performance procedure the assay still work"?) Calculation of the Z' ­ Factor (quality criteria) Manual performance procedure: (Uses/purpose of procedure: Setup a new assay. Use as basis for comparison with automated version

  17. NOTES ON SICKLE-CELL POLYMORPHISM BYA. C. ALLISON

    E-Print Network [OSTI]

    [ 39 1 NOTES ON SICKLE-CELL POLYMORPHISM BYA. C. ALLISON Clinical Pathology Laboratory OF THE SICKLE-CELL UENE In 1910 Herrick described the occurrence of sickle-shaped erythrocytes in the blood that distortion of susceptible red blood corpusclesinto sickle- cells takes place only when they are deprived

  18. LUCIFERASE ASSAY PROTOCOL FROM TRANSFORMED TISSUE Special Note

    E-Print Network [OSTI]

    Raizada, Manish N.

    LUCIFERASE ASSAY PROTOCOL FROM TRANSFORMED TISSUE Special Note: The Luciferase enzyme is unstable-ground samples. 2. Collect liquid nitrogen from downstairs and place 24 frozen tissue samples inside. 3. Place the power. 14.The luminometer cuvettes can be reused, BUT ONLY if they have been thoroughly soaked

  19. A Note on Hamilton Cycles in Kneser Graphs Ian Shields

    E-Print Network [OSTI]

    Savage, Carla D.

    A Note on Hamilton Cycles in Kneser Graphs Ian Shields IBM P.O. Box 12195 Research Triangle Park) have Hamilton cycles when n #20; 27. A similar result is shown for bipartite Kneser graphs. 1 for Hamilton cycles in Kneser graphs, K(n; k), and bipartite Kneser graphs, H(n; k). With the exception

  20. Branden Fitelson Philosophy 290 Notes 1 Conditionals Seminar: Day 2

    E-Print Network [OSTI]

    Fitelson, Branden

    : ­ Stay tuned to course website for announcements/readings, etc. [e.g., first 4 chapters of Bennett OF BENNETT 09/07/04 Branden Fitelson Philosophy 290 Notes 2 ' & $ % Logical Background: (the horseshoe: p ? q ñ p q. Controversial: p q ñ p ? q. UCB Philosophy CHAPTERS 2 AND 3 OF BENNETT 09

  1. APPLICATION OF SEWAGE SLUDGES AND COMPOSTS BPG NOTE 6

    E-Print Network [OSTI]

    the nutrients without resulting in damage to the tree stand. Soil pH will be affected by the application or increase pH · Most immobilise metal contamination · Act as slow release fertiliser (nitrogen and phosphorus NOTE 6 PAGE 2 Applications of sewage sludges and composts Forestry Tree growth on nutrient

  2. 221B Lecture Notes Quantum Field Theory IV (Radiation Field)

    E-Print Network [OSTI]

    Murayama, Hitoshi

    221B Lecture Notes Quantum Field Theory IV (Radiation Field) 1 Quantization of Radiation Field Early development of quantum mechanics was led by the fact that electro- magnetic radiation (electric current den- sity) j = (, j/c). For a point particle of charge e, the charge density is = e

  3. 221B Lecture Notes Quantum Field Theory III (Radiation Field)

    E-Print Network [OSTI]

    Murayama, Hitoshi

    221B Lecture Notes Quantum Field Theory III (Radiation Field) 1 Quantization of Radiation Field Early development of quantum mechanics was led by the fact that electro- magnetic radiation (electric current den- sity) j = (, j/c). For a point particle of charge e, the charge density is = e

  4. Atmosphere and Ocean: Earth's Heat Engine: GFD Lab notes

    E-Print Network [OSTI]

    Atmosphere and Ocean: Earth's Heat Engine: GFD Lab notes 18 May 2012 UW Hon220c Energy' of water vapor, CO2 and cloud, makes us much warmer than a Marsian (almost no atmosphere. -550C average 2002 clouds, snow, ice, deserts are bright absorbing areas are dark

  5. Notes From the Chair 2 Climate Change Impacts Could 2

    E-Print Network [OSTI]

    Notes From the Chair 2 Climate Change Impacts Could 2 Affect Columbia River Hydropower Generation hydropower dams, irrigates crops, provides habitat for fish and wild- life, and recreation, the implications and wildlife and hydropower. With the goal of protecting both resources, the Council has developed innovative

  6. CDF Note 10796 Search for Standard Model Higgs Boson Production

    E-Print Network [OSTI]

    Fermilab

    CDF Note 10796 Search for Standard Model Higgs Boson Production in Association with a W± Boson present a search for the standard model Higgs boson produced in association with a W± boson. This search that at least one jet be identified to originate from a bottom quark. Discrimination between the Higgs boson

  7. Herpetological Review 44(4), 2013 NATURAL HISTORY NOTES 695

    E-Print Network [OSTI]

    Willson. J.D.

    Herpetological Review 44(4), 2013 NATURAL HISTORY NOTES 695 the second black, with sharply defined. The Snakes. Wind- ward Publ., Miami, Florida. 176 pp.). Here we report several new diet records for N of Energy's Savannah River Site (SRS), Aiken and Barnwell counties, South Carolina, USA, we documented

  8. TESLA 2002-10 CBP Tech Note-268

    E-Print Network [OSTI]

    LCC-0108 TESLA 2002-10 CBP Tech Note-268 Comparison of Emittance Tuning Simulations in the NLC and TESLA Damping Rings A. Wolski LBNL W. Decking DESY November 11th , 2002 Abstract Vertical emittance is a critical issue for future linear collider damping rings. Both NLC and TESLA specify vertical emittance

  9. Oldenburg Lecture Notes in Software Engineering Energy-Efficient Applications

    E-Print Network [OSTI]

    Appelrath, Hans-Jürgen

    Oldenburg Lecture Notes in Software Engineering Energy-Efficient Applications Seminar ­ copyright by authors ­ #12;Introduction Energy-efficiency has become an important issue in information to conserve energy in IT probably is trying to build more efficient hardware. Lots of work has already been

  10. These notes are from 2010 Cap and Trade Working Already

    E-Print Network [OSTI]

    Toohey, Darin W.

    Acid Rain These notes are from 2010 #12;Cap and Trade Working Already December 15, 2009 10:14 AM across the country decreased emissions of SO2, a precursor to acid rain, to 7.6 million tons in 2008. #12;Overview of Acid Rain Phenomenon Most common term for acidification of the environment, which can occur

  11. LABORATORY ANALYSIS OF SOILS AND SPOILS BPG NOTE 2

    E-Print Network [OSTI]

    be very costly to correct later (Bending et al., 1999). Soils on brownfield sites are often considered quantification of important hazards such as contaminants which are very often present on brownfield sites on contaminated land, and the forthcoming Information Note: Greenspace establishment on brownfield land: the site

  12. HMSC Sustainability Committee 11/8/06 Meeting Notes

    E-Print Network [OSTI]

    HMSC Sustainability Committee 11/8/06 Meeting Notes Brandon Trelstad, Coordinator of OSU sustainability group, gave a presentation highlighting sustainability initiatives at OSU, including: · new Kelley survey showing support for increase in student fees to pay for sustainability investments

  13. Advanced Calculus I (Math 309) Fall 2005 Lecture Notes

    E-Print Network [OSTI]

    Bohner, Martin

    ); (iii) invertible if f is both one-to-one and onto, and then f-1 : Y X is called the inverse function the composite function of f and g. Proposition 1.11. A function f : X Y is invertible iff there existsAdvanced Calculus I (Math 309) Fall 2005 Lecture Notes Martin Bohner Version from December 4, 2005

  14. (Data in metric tons of silver content unless otherwise noted)

    E-Print Network [OSTI]

    146 SILVER (Data in metric tons 1 of silver content unless otherwise noted) Domestic Production.S. refiners of commercial-grade silver, with an estimated total output of 6,500 tons from domestic and foreign to minimize odor, electroplating, hardening bearings, inks, mirrors, solar cells, water purification, and wood

  15. (Data in metric tons of silver content unless otherwise noted)

    E-Print Network [OSTI]

    146 SILVER (Data in metric tons 1 of silver content unless otherwise noted) Domestic Production.S. refiners of commercial-grade silver, with an estimated total output of 6,500 tons from domestic and foreign, hardening bearings, inks, mirrors, solar cells, water purification, and wood treatment to resist mold

  16. (Data in metric tons of silver content unless otherwise noted)

    E-Print Network [OSTI]

    146 SILVER (Data in metric tons 1 of silver content unless otherwise noted) Domestic Production, with an estimated total output of 2,500 tons from domestic and foreign ores and concentrates, and from old and new, mirrors, solar cells, water purification, and wood treatment. Silver was used for miniature antennas

  17. (Data in metric tons1 of gold content, unless noted)

    E-Print Network [OSTI]

    combined production accounted for nearly 80% of the U.S. total. The trend for recent U.S. gold exploration68 GOLD (Data in metric tons1 of gold content, unless noted) Domestic Production and Use: Gold was recovered as a byproduct of processing base metals, chiefly copper. Twenty-five lode mines yielded

  18. BRIEFING NOTE SUMMARY OF MATTERS CONSIDERED BY THE MANAGEMENT BOARD

    E-Print Network [OSTI]

    the System - would be crucial if the necessary improvements to the health and safety culture across Imperial for election to the Fellowship of the College and two for election to its Associateship. HEALTH AND SAFETY UPDATE 3. The Board noted that Professor John Wood would succeed Professor Smith as the College Safety

  19. BLUE: An Interactive Visualization System for Categorical Data Technical Note

    E-Print Network [OSTI]

    Kerbs, R. W.

    BLUE: An Interactive Visualization System for Categorical Data Technical Note Robert W. Kerbs. This paper introduces a prototype data visualization system, BLUE, to help induce meaningful decision trees from databases that contain primarily categorical attributes. BLUE is an interactive model creation

  20. Strategic Planning Notes MT AHEC/MORH Advisory Board

    E-Print Network [OSTI]

    Dyer, Bill

    big, complex issues ­ Montana Healthcare Workforce Advisory Committee, HC Workforce Strategic PlanStrategic Planning Notes MT AHEC/MORH Advisory Board February 7, 2014 Strategic Priorities 1. Healthcare Workforce Training and educating the workforce Montana needs o Educational infrastructure o

  1. A Note on Enumeration of One-Vertex Maps

    E-Print Network [OSTI]

    Petkovsek, Marko

    A Note on Enumeration of One-Vertex Maps Alen Orbani´c Alen.Orbanic@fmf.uni-lj.si, Marko Petkovsek of Ljubljana Jadranska 19, 1000 Ljubljana, SLOVENIJA December 10, 2009 Abstract The number of distinct maps by a map can be answered in several different ways. We enumerate 16 different types of objects where each

  2. Technical Note Ultrasound Probe with Integrated ECG Lead: Feasibility Study

    E-Print Network [OSTI]

    Smith, Stephen

    Technical Note Ultrasound Probe with Integrated ECG Lead: Feasibility Study ARCHANA RAMIREDDY 27708 stephen.w.smith@duke.edu We integrated electrocardiogram (ECG) leads onto the face of a cardiac of devices needed to col- lect cardiac information. Since the ECG leads were not placed on their standard

  3. Notes for Graduate Course "Graphs, Spectral Theory, and

    E-Print Network [OSTI]

    Miller, Stephen David

    of Eisenstein series (some notes on this can be found on my web- page). I wish to thank Jonathan circumventing Weil's deep p __ work showing |K`| 2 p, which is sharp). Our proof is just a geometri- cal rearrangement. There already is a DEEP algebraic- geometric proof

  4. V-229: IBM Lotus iNotes Input Validation Flaws Permit Cross-Site...

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

    9: IBM Lotus iNotes Input Validation Flaws Permit Cross-Site Scripting Attacks V-229: IBM Lotus iNotes Input Validation Flaws Permit Cross-Site Scripting Attacks August 28, 2013 -...

  5. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology and imple- #12;Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture

  6. LLW Notes, Volume 9, Number 6. October 1994

    SciTech Connect (OSTI)

    NONE

    1994-10-01T23:59:59.000Z

    LLW Notes is distributed to Low-Level Radioactive Waste Forum Participants and other state and compact officials identified by those Participants to receive LLW Notes. The Low-Level Radioactive Waste Forum is an association of state and compact representatives appointed by governors and compact commissions, established to facilitate state and compact commission implementation of the Low- Level Radioactive Waste Policy Act of 1980 and the Low-Level Radioactive Waste Policy Amendments Act of 1985 and to promote the objectives of low-level radioactive waste regional compacts. The Forum provides an opportunity for states and compacts to share information with one another and to exchange views with officials of federal agencies and other interested parties.

  7. Service-Oriented Architectures and Web Services: Course Tutorial Notes

    E-Print Network [OSTI]

    Mokhov, Serguei A

    2009-01-01T23:59:59.000Z

    This document presents a number of quick-step instructions to get started on writing mini-service-oriented web services-based applications using NetBeans 6.5.x, Tomcat 6, GlassFish 2.1, and Java 1.6 primarily in Fedora 9 Linux with user quota restrictions. While the tutorial notes are oriented towards the students taking the SOEN691A course on service-oriented architectures (SOA) at Computer Science and Software Engineering (CSE) Department, Faculty of Engineering and Computer Science (ENCS), other may find some of it useful as well outside of CSE or Concordia. The notes are compiled mostly based on the students' needs and feedback.

  8. seminar.sty A LATEX style for slides and notes

    E-Print Network [OSTI]

    Ihn, Thomas

    seminar.sty A LATEX style for slides and notes User's Guide Timothy Van Zandt tvz@Princeton.EDU 1 ' & $ % ' & $ % ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥¥ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢¢ seminar.sty is a LATEX style for typesetting slides or transparen- cies, and accompanying notes. Here fonts. Slides can be landscape and portrait. There is support for color and frames. The magnifi- cation

  9. LLW Notes, volume 9, No. 7. November and December 1994

    SciTech Connect (OSTI)

    NONE

    1994-12-01T23:59:59.000Z

    LLW Notes is distributed to Low-Level Radioactive Waste Forum Participants and other state and compact officials identified by those Participants to receive LLW Notes. The Low-Level Radioactive Waste Forum is an association of state and compact representatives appointed by governors and compact commissions, established to facilitate state and compact commission implementation of the Low- Level Radioactive Waste Policy Act of 1980 and the Low-Level Radioactive Waste Policy Amendments Act of 1985 and to promote the objectives of low-level radioactive waste regional compacts. The Forum provides an opportunity for states and compacts to share information with one another and to exchange views with officials of federal agencies and other interested parties.

  10. LLW Notes, vol.9, no. 5. August/September 1994

    SciTech Connect (OSTI)

    NONE

    1994-09-01T23:59:59.000Z

    LLW Notes is distributed to Low-Level Radioactive Waste Forum Participants and other state and compact officials identified by those Participants to receive LLW Notes. The Low-Level Radioactive Waste Forum is an association of state and compact representatives appointed by governors and compact commissions, established to facilitate state and compact commission implementation of the Low- Level Radioactive Waste Policy Act of 1980 and the Low-Level Radioactive Waste Policy Amendments Act of 1985 and to promote the objectives of low-level radioactive waste regional compacts. The Forum provides an opportunity for states and compacts to share information with one another and to exchange views with officials of federal agencies and other interested parties.

  11. A Note on Online Load Balancing for Related Machines

    E-Print Network [OSTI]

    Eckmiller, Rolf

    (j) that will execute it. We define the load of a machine i and the load of entire schedule s as follows: load(s; i) = 1A Note on On­line Load Balancing for Related Machines Piotr Berman \\Lambda Marek Karpinski y that differ in speed but are related in the following sence: a job of size p requires time p=v on a machine

  12. Notes 15. Identification of parameters in mechanical systems

    E-Print Network [OSTI]

    San Andres, Luis

    2008-01-01T23:59:59.000Z

    Notes 15. Identification of bearing force coefficients. ? Dr. Luis San Andr?s (2008) 1 Handout # 15 (MEEN 617) Application example Experimental identification of bearing force coefficients Consider a test bearing or seal element as a point mass... for your self-study and further learning. References Diaz, S., and L. San Andr?s, 1999, "A Method for Identification of Bearing Force Coefficients and its Application to a Squeeze Film Damper with a Bubbly Lubricant,? STLE Tribology Transactions...

  13. STRUCTURE NOTE Conformational Variation of Calcium-Bound Troponin C

    E-Print Network [OSTI]

    Phillips, George N. Jr.

    ­156) helices. Each domain is filled with two Ca2 ions in the two helix-loop-helix calcium-binding motifsSTRUCTURE NOTE Conformational Variation of Calcium-Bound Troponin C Jayashree Soman,1 Terence Tao,2 of 2-Ca2 avian TnC2,3 and the NMR structure of calcium-saturated TnC,4 it is generally ac- cepted now

  14. Application note : using open source schematic capture tools with Xyce.

    SciTech Connect (OSTI)

    Russo, Thomas V.

    2013-08-01T23:59:59.000Z

    The development of the XyceTM Parallel Electronic Simulator has focused entirely on the creation of a fast, scalable simulation tool, and has not included any schematic capture or data visualization tools. This application note will describe how to use the open source schematic capture tool gschem and its associated netlist creation tool gnetlist to create basic circuit designs for Xyce, and how to access advanced features of Xyce that are not directly supported by either gschem or gnetlist.

  15. Ocena ?lanka Notes on Slovene and Slavic Etymology

    E-Print Network [OSTI]

    ivic Dular, Alenka

    1997-01-01T23:59:59.000Z

    ', coll. khad), tj. o besedotvorju, ki ga ta slovar tudi drugod pravi- loma eksplicitno ne izpostavlja, ampak mu pogosto zadoita korenska identifikacija. Razlaga semantitnega izhodigta ne vnaSa bistveno novih sklepov. ~e najbolj kon- kretno (vendar ne... novo) je dopolnilo, da etimoloika zveza z lit. Serti Seriu ni mogo- A Sivic Dular, Recenzija prispevka Notes on Slovene and Slavic Etymology 163 Ea (pri Fraenklu: unwahrscheinlich), ki jo Bezlaj samo dopugEa, in Se to na koncu geselskega Banka, kar...

  16. Field Notes, Idaho, Borell & Orr (1930-1932)

    E-Print Network [OSTI]

    Davis, William B.

    2012-04-09T23:59:59.000Z

    -fr,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ?xtfmy ?Knx?6 FIELD NOTES OF A.E.BORELL ?r-anp U-? w?b Fkqkoi wp w?5? Yatot lnito gtft jnxstr mfnd iat nfsqsl-y ?? ?, O, ?-usop Fkqkoip w?5., ?nito -ft lni -l t?-ji rkxysj-it nm iat nfsqsl-y, Ka-lqto ?l mnfd nm x-qtp ojstlismsj l-dtop -lr oxtyyslq...

  17. Handbookfor International Students at ETH Zurich Please note

    E-Print Network [OSTI]

    Handbookfor International Students at ETH Zurich #12;Please note: This booklet was designed for twoSTudyIng aT ETH ZurIcH 49lIFE on camPuS 58camPuS maPS 60mIScEllanEouS InFormaTIon 63IndEx Content #12;ETH Zurich Main Building Campus Hönggerberg (Science City) #12;Dear international student

  18. Advanced Calculus I (Math 309) Fall 2002 Lecture Notes

    E-Print Network [OSTI]

    Bohner, Martin

    is invertible iff there exists a function g : Y X with (f g)(y) = y y Y and (g f)(x) = x x X, and then gAdvanced Calculus I (Math 309) Fall 2002 Lecture Notes Martin Bohner Version from December 11, 2002. Preliminaries 1 0.1. Sets 1 0.2. Functions 1 0.3. Proofs 2 Chapter 1. The Real Number System 3 1.1. The Field

  19. Advanced Calculus I (Math 309) Fall 2003 Lecture Notes

    E-Print Network [OSTI]

    Bohner, Martin

    function of f and g. Proposition 0.9. A function f : X Y is invertible iff there exists a function g : YAdvanced Calculus I (Math 309) Fall 2003 Lecture Notes Martin Bohner Version from December 3, 2003. Preliminaries 1 0.1. Sets 1 0.2. Functions 1 0.3. Proofs 2 Chapter 1. The Real Number System 3 1.1. The Field

  20. Notes 14. Experimental identification of bearing force coefficients

    E-Print Network [OSTI]

    San Andres, Luis

    2009-01-01T23:59:59.000Z

    An example of system parameter identification (Hybrid Brush Seal) Luis San Andr?s (lecturer) Thanks to Adolfo Delgado, Jos? Baker (RAs) & support from Siemens Power Generation MEEN 617 - April 2008 Structural parameters K shaft = 243 lbf/in (42...Notes 14. IDENTIFICATION OF BEARING FORCE COEFFICIENTS. ? Dr. Luis San Andr?s (2009) 1 Handout # 14 (MEEN 626) Application example Experimental identification of bearing force coefficients Experimental identification of the dynamic force...

  1. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future is a virtue ­ your insight, clarity of thought, #12;Note: This syllabus may represent

  2. The impact of proton-pump inhibitors on intraperitoneal sepsis: a word of caution for transgastric NOTES procedures

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    for transgastric NOTES procedures Sonia L. Ramamoorthy pantoprazole for 3 days before procedure and another dose 1approaches to NOTES procedures stems from the concern over

  3. Notes 06. Liquid cavitation in fluid film bearings

    E-Print Network [OSTI]

    San Andres, Luis

    2009-01-01T23:59:59.000Z

    [s] U ?R. Journal surface speed [m/s] V dh/dt. Squeeze film velocity [m/s] X= ?R, y, z Coordinate system on plane of bearing ? ()/ cav ?? . Density ratio ? P ? ? ? ? . Liquid bulk-modulus [N/m 2 ] ? Liquid density [kg/m 3 ] cav... ? Density at Pcav [kg/m 3 ] ? Fluid absolute viscosity [N.s/m 2 ] ? Journal angular speed (rad/s) Subscripts * Inception of the cavitation zone a Ambient value cav Cavitation NOTES 6. CAVITATION IN LIQUID FILM BEARINGS. Dr. Luis San Andr?s ? 2009...

  4. Tutorial Note on Merging Matrix Elements with Parton Showers

    E-Print Network [OSTI]

    Rssler, Thomas

    2015-01-01T23:59:59.000Z

    In this short note, I introduce to essential conceptual features and main building blocks of matrix element merging algorithms, operating on fixed order calculations both at leading order and next-to-leading order. The intention is purely pedagogical, i.e. to familiarize the reader with the essential basic concepts in a concise way, thus serving as an introduction to beginners and other interested readers. Unitarization is discussed briefly. The tutorial is highly biased towards transverse momentum ordered parton showers, and in particular towards merging schemes as they are implemented in the Pythia8 general purpose Monte Carlo generator.

  5. Note on potential theory for functions in Hardy classes

    E-Print Network [OSTI]

    Truong, Tuyen Trung

    2008-01-01T23:59:59.000Z

    The purpose of this note is to show that the set functions defined in \\cite{trong-tuyen} can be suitably extended to all subsets $E$ of the unit disk $\\mathbb{D}$. In particular we obtain uniform nearly-optimal estimates for the following quantity D_p(E,\\epsilon, R) = \\sup \\{\\sup_{|z| \\leq R}|g(z)|: g\\in H^p, ||g||_{H^p}\\leq 1, (1-|\\zeta |)|g(\\zeta)| \\leq \\epsilon \\forall \\zeta\\in E\\}.

  6. The effectiveness of note taking in the college classroom

    E-Print Network [OSTI]

    Miller, Thomas Harold

    1969-01-01T23:59:59.000Z

    and C-. rlto. . r ferred to an earlier stud; 'ov Vernon ~19 ', . ) ~who reoorted that note takin= durin:; film strips did not cortri?. u, . e signific= ntly to Learning, even when tce film strics w, re ad]usted to s Liow a, ;"le writing time. Vernon... ore -e?. tati on, . d some f 1 ' ns 1 co& &, 1 r& ! q ro t ', j r??c 1? n ' q, -c& . oH+ er s o &or &-r 1; 1-. fo? t-&, r 1& ", o c- 'ar?!cn's st. &d. - ?. . i=-. ht lndic! t that ?!?cole c-& ' rtu?!1?v no ' ' -. u' it m&&. = ce r . mesc!-rec 'ha...

  7. On the energy-time uncertainty principle A didactical note

    E-Print Network [OSTI]

    Giribet, G

    2005-01-01T23:59:59.000Z

    This brief note has the didactical purpose of discussing the meaning of the uncertainty principle involving energy and time in quantum mechanics by means of a review of the seminal works on this subject. The importance of this topic is, indeed, frequently neglected in several textbooks on quantum mechanics. Then, these pages are addressed to students attenting to an undergraduate course on quantum theory; and the original aim is that of presenting a list of references of the points that take part in the principal discussions on the subject. Special attention is devoted to the discussion of the fallacies, which are certainly persistent in the didactical literature.

  8. Microsoft Word - Energy Industry Days Notes.docx

    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 L d F S i DOE Tribal LeaderDE-OE0000660Mr.Ms. Galanti -6Notes from

  9. Notes from the Call | OpenEI Community

    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 revision hasInformation Earth's HeatMexico:CommunityNorthwest Basin and RangeNorvento USA LLCNorwich,Notes

  10. Radio sources in the 2dF Galaxy Redshift Survey - II. Local radio luminosity functions for AGN and star-forming galaxies at 1.4 GHz

    E-Print Network [OSTI]

    Elaine M. Sadler; Carole A. Jackson; Russell D. Cannon; Vincent J. McIntyre; Tara Murphy; J. Bland-Hawthorn; T. Bridges; S. Cole; M. Colless; C. Collins; W. Couch; G. Dalton; R. De Propris; S. P. Driver; G. Efstathiou; R. S. Ellis; C. S. Frenk; K. Glazebrook; O. Lahav; I. Lewis; S. Lumsden; S. Maddox; D. Madgwick; P. Norberg; J. A. Peacock; B. A. Peterson; W. Sutherland; K. Taylor

    2002-01-25T23:59:59.000Z

    We have cross-matched the 1.4 GHz NRAO VLA Sky Survey (NVSS) with the first 210 fields observed in the 2dF Galaxy Redshift Survey (2dFGRS), covering an effective area of 325 square degrees (about 20% of the final 2dFGRS area). This yields a set of optical spectra of 912 candidate NVSS counterparts, of which we identify 757 as genuine radio IDs - the largest and most homogeneous set of radio-source spectra ever obtained. The 2dFGRS radio sources span the redshift range z=0.005 to 0.438, and are a mixture of active galaxies (60%) and star-forming galaxies (40%). About 25% of the 2dFGRS radio sources are spatially resolved by NVSS, and the sample includes three giant radio galaxies with projected linear size greater than 1 Mpc. The high quality of the 2dF spectra means we can usually distinguish unambiguously between AGN and star-forming galaxies. We have made a new determination of the local radio luminosity function at 1.4 GHz for both active and star-forming galaxies, and derive a local star-formation density of 0.022+/-0.004 solar masses per year per cubic Mpc. (Ho=50 km/s/Mpc).

  11. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology-748-1331. mdeact@shaw.ca #12;Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology

  12. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology, BC, V9J 1G4 #12;Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology

  13. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology Rd., Black Creek, BC, V9J 1G4 #12;Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology

  14. COLLOQUIUM - NOTE SPECIAL TIME OF 3:15PM: Savannah River National...

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

    to 5:30pm Colloquia MBG Auditorium COLLOQUIUM - NOTE SPECIAL TIME OF 3:15PM: Savannah River National Laboratory: Underpinning Critical National Missions Dr. Jeff Griffin...

  15. TECHNICAL NOTE HEAVY-DUTY DIESEL VEHICLE (HDDV) IDLING ACTIVITY AND

    E-Print Network [OSTI]

    #12;#12;TECHNICAL NOTE HEAVY-DUTY DIESEL VEHICLE (HDDV) IDLING ACTIVITY AND EMISSIONS STUDY: PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Current Diesel Idling Emissions Factors

  16. E-Print Network 3.0 - articulator technical note Sample Search...

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

    Articulated Bodies Stephane Redon Nico Galoppo Ming C. Lin Summary: increase the kinetic energy of the articulated body. Note that, when rigidification impulses are applied... -...

  17. Department of Mechanical Engineering Robotic Multi-Articulated Endoscopic Surgical Tools for NOTES

    E-Print Network [OSTI]

    Wu, Mingshen

    of Minnesota, Minneapolis, MN Abstract Natural Orifice Translumenal Endoscopic Surgery (NOTES) promises be the robotic device. This will improve accuracy and the introduce the possibility of incorporating additional

  18. Notes 08. Turbulence flow in thin film bearings : Characteristics and Modeling

    E-Print Network [OSTI]

    San Andres, Luis

    2009-01-01T23:59:59.000Z

    NOTES 8. TURBULENCE IN THIN FILM FLOWS. Dr. Luis San Andr?s ? 2009 1 Notes 8. Turbulence in Thin Film Flows Notes 8 detail the characteristics of turbulent flows and provide insight into the flow instabilities that precede transition from a... for averaging of turbulent flow velocities [s] NOTES 8. TURBULENCE IN THIN FILM FLOWS. Dr. Luis San Andr?s ? 2009 2 Ta 2 Re C R ?? ?? ?? . Taylor number ?? 1, 2, 3 i i u ? Components of velocity field [m/s] = ? ? ii uu?? ?? 1, 2, 3 , ii i uu...

  19. Clinical experience with a multifunctional, flexible surgery system for endolumenal, single-port, and NOTES procedures

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    for endolumenal, single-port, and NOTES procedures SantiagoAbstract Background Single-port and incisionless surgicalendolumenal, single-port, transvaginal, or transgastric)

  20. A note on Lorentz-like transformations and superluminal motion

    E-Print Network [OSTI]

    Congrui Jin; Markus Lazar

    2014-04-14T23:59:59.000Z

    In this extended note a critical discussion of an extension of the Lorentz transformations for velocities faster than the speed of light given recently by Hill and Cox is provided. The presented approach reveals the connection between faster-than-light speeds and the issue of isotropy of space. It is shown if the relative speed between the two inertial frames $v$ is greater than the speed of light, the condition of isotropy of space cannot be retained. It further specifies the respective transformations applying to $-\\inftytransformations are improper transformations since the Jacobian is negative. As a consequence, the wave operator, the light-cone and the volume element are not invariant under such Lorentz-like transformations. Also it is shown that such Lorentz-like transformations are not new and already known in the literature.

  1. Lecture notes for introduction to nuclear engineering 101

    SciTech Connect (OSTI)

    Fullwood, R.; Cadwell, J.

    1992-03-01T23:59:59.000Z

    The lecture notes for introductory nuclear engineering are provided for Department of Energy personnel that are recent graduates, transfers from non-nuclear industries, and people with minimum engineering training. The material assumes a knowledge of algebra and elementary calculus. These notes support and supplement a three-hour lecture. The reader is led into the subject from the familiar macroscopic world to the microscopic world of atoms and the parts of atoms called elementary particles. Only a passing reference is made to the very extensive world of quarks and tansitory particles to concentrate on those associated with radioactivity and fission. The Einsteinian truth of mass-energy equivalence provides an understanding of the forces binding a nucleus with a resulting mass defect that results in fusion at one end of the mass spectrum and fission at the other. Exercises are provided in calculating the energy released in isotopic transformation, reading and understanding the chart of the nuclides. The periodic table is reviewed to appreciate that the noble elements are produced by quantum mechanical shell closings. Radioactive decay is calculated as well as nuclear penetration and shielding. The geometric attenuation of radiation is studied for personal protection; the use of shielding materials for radiation protection is presented along with the buildup factor that renders the shielding less effective than might be supposed. The process of fission is presented along with the fission products and energies produced by fission. The requirements for producing a sustained chain reactor are discussed. The lecture ends with discussions of how radiation and dose is measured and how dose is converted to measures of the damage of radiation to our bodies.

  2. version 17.0 FERMILAB-PUB-10-???-E CDF Note 10101, D0 Note 6039 Combined Tevatron upper limit on gg H W +

    E-Print Network [OSTI]

    Fermilab

    ,82 D. Brown ,22 E. Brubaker ,83 X.B. Bu ,8 D. Buchholz ,86 J. Budagov ,53 H.S. Budd ,115 S. Budd ,87. Campanelli ,68 M. Campbell ,104 F. Canelli ,82, 83 A. Canepa ,123 B. Carls ,87 D. Carlsmith ,134 R. Carosiversion 17.0 FERMILAB-PUB-10-???-E CDF Note 10101, D0 Note 6039 Combined Tevatron upper limit on gg

  3. aspheric acrysof sn60wf: Topics by E-print Network

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

    a disk-like or ring-like morphology for the dense (ne 107 cm-3) circumstellar medium. Implications of the circumstellar scattering environment for the...

  4. Getting Started with Matlab These notes are an introduction to the computer algebra system Matlab,

    E-Print Network [OSTI]

    Carlson, Bob

    Chapter 1 Getting Started with Matlab These notes are an introduction to the computer algebra system Matlab, which will be used from time to time in this course, Introduction to Differen- tial of the notes is welcome and appreciated. Matlab is an extremely powerful (and complex) computing tool. Happily

  5. LBNL Totally Depleted CCD Group Internal Note Last revised 8 November 2002

    E-Print Network [OSTI]

    LBNL Totally Depleted CCD Group Internal Note Last revised 8 November 2002 Conceptual design for shielding the 200 µm-thick LBNL CCD at the Lick 3-m Coud´e Spectrograph from environmental gamma radiation This note was drafted by Don Groom (LBNL; deg@lbl.gov), but it is based on considerable work by Steve

  6. LBNL Totally Depleted CCD Group Internal Note Last revised 8 November 2002

    E-Print Network [OSTI]

    LBNL Totally Depleted CCD Group Internal Note Last revised 8 November 2002 Conceptual design for shielding the 200 µm­thick LBNL CCD at the Lick 3­m Coud??e Spectrograph from environmental gamma radiation This note was drafted by Don Groom (LBNL; deg@lbl.gov), but it is based on considerable work by Steve

  7. INTERNAL PROJECT INFORMATION NOTE 10/08 Title: CCF Harvesting Method Development: Harvester Head

    E-Print Network [OSTI]

    INTERNAL PROJECT INFORMATION NOTE 10/08 Title: CCF Harvesting Method Development: Harvester Head PROJECT INFORMATION NOTE 10/08 Ref 1200A/56/07 CCF Harvesting Method Development: Harvester Head Visibility SUMMARY The use of Continuous Cover Forestry (CCF) can lead to situations where a dense

  8. Notes from briefing by NIH Acting Director Raynard Kington, Wednesday, February 18, 2009 at AAAS Auditorium.

    E-Print Network [OSTI]

    Bushman, Frederic

    Notes from briefing by NIH Acting Director Raynard Kington, Wednesday, February 18, 2009 at AAAS." The statutory and conference report language that is relevant to the NIH funding follows these notes. Dr NIH is still formulating its plans to obligate the funding. He would provide no specifics

  9. d.note: Revising User Interfaces Through Change Tracking, Annotations, and Alternatives

    E-Print Network [OSTI]

    Cheriton, David R.

    , revision, annotation. ACM Classification Keywords H.5.2. [Information Interfaces]: User Interfacesd.note: Revising User Interfaces Through Change Tracking, Annotations, and Alternatives Björn typically revise user interface prototypes by adding unstructured notes to storyboards and screen printouts

  10. editor's note Editor's Note

    E-Print Network [OSTI]

    Chen, Kuang-Yu

    interests." Perhaps Americans can be inspired again to fight for liberal democracy against Putin or Assad

  11. Notes on the Ethics of Elephant Culling Saliem Fakir, Talk at the Ethics Society Congress of South Africa, 30th

    E-Print Network [OSTI]

    1 Notes on the Ethics of Elephant Culling Saliem Fakir, Talk at the Ethics Society Congress the elephant culling issue. It must be noted that the issue of elephant culling holds parallels for other types

  12. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may;Note: This syllabus may represent a past offering of this course and future course offerings may differ

  13. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may to its cultural relevance and effectiveness 50% Week 9 #12;Note: This syllabus may represent a past

  14. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may) with your progress report (PDF). (1-3 pages) #12;Note: This syllabus may represent a past offering

  15. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may the original total point value. Work more than 5 days late will receive zero credit. #12;Note: This syllabus

  16. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may-class participation (required) #12;Note: This syllabus may represent a past offering of this course and future course

  17. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may Participation 10% Major Figure 15% Group Web 25% Final Paper 40% #12;Note: This syllabus may represent a past

  18. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may is a part of your class grade and that it includes many components. #12;Note: This syllabus may represent

  19. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may will design and build a #12;Note: This syllabus may represent a past offering of this course and future course

  20. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may and prototype files can be in the format most convenient for you. #12;Note: This syllabus may represent a past

  1. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may, #12;Note: This syllabus may represent a past offering of this course and future course offerings may

  2. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may argumentation around the concept of crowdsourcing/crowd work. #12;Note: This syllabus may represent a past

  3. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may your professional identity using multiple avenues (i.e., #12;Note: This syllabus may represent a past

  4. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may discussions): 20% #12;Note: This syllabus may represent a past offering of this course and future course

  5. Calculus Cheat Sheet Visit http://tutorial.math.lamar.edu for a complete set of Calculus notes. 2005 Paul Dawkins

    E-Print Network [OSTI]

    Bogaerts, Steven

    Calculus Cheat Sheet Visit http://tutorial.math.lamar.edu for a complete set of Calculus notes;Calculus Cheat Sheet Visit http://tutorial.math.lamar.edu for a complete set of Calculus notes. © 2005 Paul

  6. Research note on a well posed integral used in Apery's proof for the irrationality of Z(3)

    E-Print Network [OSTI]

    Nikos Bagis

    2009-07-06T23:59:59.000Z

    In this note we evaluate multiple integrals that play a crucial role in the theory of irrationality of zeta function

  7. Date: Feb. 18, 2002 COSC 6117 --Theory of Distributed Computing Page: 1 Lecturer: Eric Ruppert Lecture 11 Notes: Ying Zou

    E-Print Network [OSTI]

    Ruppert, Eric

    Lecture 11 Notes: Ying Zou Shared Memory: Impossibility of asynchronous consensus with halting failures -- Theory of Distributed Computing Page: 2 Lecturer: Eric Ruppert Lecture 11 Notes: Ying Zou different Computing Page: 3 Lecturer: Eric Ruppert Lecture 11 Notes: Ying Zou multivalent P Q R 0-valent 1-valent 0

  8. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may management project OR 55% Due Week 8b #12;Note: This syllabus may represent a past offering of this course - Cultural adaptation WEEK 3A ­ JULY 5TH Localization Engineering and Tools #12;Note: This syllabus may

  9. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may for a small system and plan and perform a usability evaluation #12;Note: This syllabus may represent a past in UCD Week 11 Project Presentations L11: Course Wrap-Up Finals Online Final Exam #12;Note: This syllabus

  10. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may;Note: This syllabus may represent a past offering of this course and future course offerings may differHutchinson Style: #12;Note: This syllabus may represent a past offering of this course and future course offerings

  11. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may reading 5% Participation in discussion 10% ____________ 100% #12;Note: This syllabus may represent a past (2) --- HW: Summary (2) due Mon. 9:00 a.m.; Prep. for mini-presentation (2) #12;Note: This syllabus

  12. Note: This syllabus may represent a past offering of this course and future course offerings may differ.

    E-Print Network [OSTI]

    Note: This syllabus may represent a past offering of this course and future course offerings may Week 3 A A. Lecture: Constructive criticism & evaluation rubric #12;Note: This syllabus may represent sources #12;Note: This syllabus may represent a past offering of this course and future course offerings

  13. Notes 07. Thermal analysis of finite length journal bearings including fluid inertia

    E-Print Network [OSTI]

    San Andres, Luis

    2009-01-01T23:59:59.000Z

    in Refs. [12,13,18] Notes 7. THERMAL ANALYSIS OF FINITE LENGTH JOURNAL BEARINGS. Dr. Luis San Andr?s ? 2009 22 system. Table 1 details the geometry of the pressure dam bearing, as detailed in Ref. [18]. Please note that Al-Jughaiman?s publication... at the center of the control-volumes. Notes 7. THERMAL ANALYSIS OF FINITE LENGTH JOURNAL BEARINGS. Dr. Luis San Andr?s ? 2009 18 z=? L z=L Fs =0 (W=0) Midplane (symmetry line) Fw Fe Fn Fe ? Fw + Fn =0 TPTW ?x x=R? z TE Tn Tw Te Exit plane...

  14. A Note on Quantum Security for Post-Quantum Cryptography

    E-Print Network [OSTI]

    Fang Song

    2014-09-08T23:59:59.000Z

    Shor's quantum factoring algorithm and a few other efficient quantum algorithms break many classical crypto-systems. In response, people proposed post-quantum cryptography based on computational problems that are believed hard even for quantum computers. However, security of these schemes against \\emph{quantum} attacks is elusive. This is because existing security analysis (almost) only deals with classical attackers and arguing security in the presence of quantum adversaries is challenging due to unique quantum features such as no-cloning. This work proposes a general framework to study which classical security proofs can be restored in the quantum setting. Basically, we split a security proof into (a sequence of) classical security reductions, and investigate what security reductions are "quantum-friendly". We characterize sufficient conditions such that a classical reduction can be "lifted" to the quantum setting. We then apply our lifting theorems to post-quantum signature schemes. We are able to show that the classical generic construction of hash-tree based signatures from one-way functions and and a more efficient variant proposed in~\\cite{BDH11} carry over to the quantum setting. Namely, assuming existence of (classical) one-way functions that are resistant to efficient quantum inversion algorithms, there exists a quantum-secure signature scheme. We note that the scheme in~\\cite{BDH11} is a promising (post-quantum) candidate to be implemented in practice and our result further justifies it. Finally we demonstrate the generality of our framework by showing that several existing works (Full-Domain hash in the quantum random-oracle model~\\cite{Zha12ibe} and the simple hybrid arguments framework in~\\cite{HSS11}) can be reformulated under our unified framework.

  15. Exploiting KeyNote in WebCom: Architecture Neutral Glue for Trust Management

    E-Print Network [OSTI]

    Foley, Simon

    Exploiting KeyNote in WebCom: Architecture Neutral Glue for Trust Management Simon N. Foley, Thomas B. Quillinan, John P. Morrison, David A. Power, James J. Kennedy. Department of Computer Science

  16. Calculation notes that support accident scenario and consequence of the evaporator dump

    SciTech Connect (OSTI)

    Crowe, R.D., Westinghouse Hanford

    1996-09-09T23:59:59.000Z

    The purpose of this calculation note is to provide the basis for evaporator dump consequence for the Tank Farm Safety Analysis Report (FSAR). Evaporator Dump scenario is developed and details and description of the analysis methods are provided.

  17. Calculation notes that support accident scenario and consequence of the evaporator dump

    SciTech Connect (OSTI)

    Crowe, R.D.

    1996-09-27T23:59:59.000Z

    The purpose of this calculation note is to provide the basis for evaporator dump consequence for the Tank Farm Safety Analysis Report (FSAR). Evaporator Dump scenario is developed and details and description of the analysis methods are provided.

  18. A Note on the Zero-Free Regions of the Zeta Function

    E-Print Network [OSTI]

    N. A. Carella

    2012-10-12T23:59:59.000Z

    This short note contributes a new zero-free region of the zeta function. This zero-free region has the form {s : Re(s) > a}, where a = 21/40.

  19. News & Notes October 23, 2006 Marcus Karl Maroney has been invited to the

    E-Print Network [OSTI]

    Azevedo, Ricardo

    News & Notes ­ October 23, 2006 Marcus Karl Maroney has been invited to the Deer Valley Festival Seating Wednesday, October 25, 7:30 p.m. FACULTY RECITAL "Happy Birthday Mozart" Andrzej Grabiec, violin

  20. Research Note on Attitudes about Peace and Justice in Northern Uganda

    E-Print Network [OSTI]

    Vinck, Patrick; Pham, Phuong; Stover, Eric; Moss, Andrew; Wierde, Marieke

    2007-01-01T23:59:59.000Z

    and Justice In Northern Uganda Northern New Population-Basedand justice in northern Uganda. The note is intended to beeight districts of northern Uganda from April to June 2007.

  1. A note on the completion of partial latin Nicholas J. Cavenagh, Diane Donovan

    E-Print Network [OSTI]

    van Rees, John

    A note on the completion of partial latin squares Nicholas J. Cavenagh, Diane Donovan Centre]. Recently, Bryant and Rodger [6] established necessary and sufficient conditions for completing an arbitary

  2. Computational Science Technical Note CSTN-119 Betweenness Centrality Metrics for Assessing Electrical Power Network

    E-Print Network [OSTI]

    Hawick, Ken

    0 Computational Science Technical Note CSTN-119 Betweenness Centrality Metrics for Assessing. Hawick}, title = {Betweenness Centrality Metrics for Assessing Electrical Power Network Robustness Metrics for Assessing Electrical Power Network Robustness against Fragmentation and Node Failure K

  3. BWeb Notes for Chapter 5: Water Flows in the Mono Basin

    E-Print Network [OSTI]

    Ford, Andrew

    BWeb Notes for Chapter 5: Water Flows in the Mono Basin Most of the BWeb notes in chapter 5 refer pages show a photo of me kneeling at the plaque. Other In and Other Out Flows: These flows are listed in Table 5.1. They are assumed to remain constant over time. The Other Out flow is 33.6 KAF/year based

  4. Notes et tudes conomiques n30, Mars 2008 LA GESTION DES RISQUES EN AGRICULTURE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    33 Notes et études économiques ­ n°30, Mars 2008 LA GESTION DES RISQUES EN AGRICULTURE De la rurale et gestion, Agrocampus Rennes ** Chargés de mission au bureau de l'analyse économique et de la la gestion des risques en agriculture #12;34 Notes et études économiques ­ n°30, Mars 2008 L

  5. seminar.sty A L A T E X style for slides and notes

    E-Print Network [OSTI]

    seminar.sty A L A T E X style for slides and notes User's Guide Timothy Van Zandt tvz style for typesetting slides or transparen­ cies, and accompanying notes. Here are some of its special features: It is compati­ ble with A M S­L A T E X, and you can use PostScript and A M S fonts. Slides can

  6. Molecular gas and AGN fueling

    E-Print Network [OSTI]

    F. Combes

    2003-08-01T23:59:59.000Z

    CO emission, tracing the molecular content and distribution in galaxies, is a privileged tool to trace gas towards the nucleus, since the HI tracer is in general depleted there. A review is done of recent CO line observations, with sufficient spatial resolution to indicate the morphology and kinematics of the gas near the nucleus. The puzzling result that nuclei presently observed in an active phase have little sign of fueling, is discussed.

  7. Configuring Entourage 2008 w/ Exchange Web Services. Note: These instruction assume that the Exchange Web Services (EWS) Update

    E-Print Network [OSTI]

    Blackwell, Keith

    Configuring Entourage 2008 w/ Exchange Web Services. Note: These instruction assume that the Exchange Web Services (EWS) Update , also known as Entourage 13.0, has already been

  8. Instructions for Book Chapter Proofs Corrections should be marked on the PDF proof using electronic notes. Please do not send

    E-Print Network [OSTI]

    Haszeldine, Stuart

    and correct, and you have sent copies of the permission to the RSC. Please note: This is a web quality pdf

  9. Some notes on beam dynamics due to vertical oscillations in an all-electric storage ring

    E-Print Network [OSTI]

    Mane, S R

    2015-01-01T23:59:59.000Z

    A document has recently been posted on the arXiv [1], describing analytical formulas and results of particle tracking simulations, for precision tests of numerical integration algorithms for an EDM (electric dipole moment) storage ring. In the context of an all-electric storage ring, the authors cite theoretical formulas by Orlov [2]. However, the reference to Orlov is to a talk at a workshop in 2012, and is unpublished and difficult for independent researchers to access and validate. This note rederives and generalizes some of Orlov's principal results, using a Hamiltonian formalism, and also corrects some details in both Orlov's note [2] and the arXiv post [1].

  10. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology.Understanding how the hydrologic cycle is affected by climate, trees and plants, soils, geology, topography, springs, or any Figure 1. The hydrologic cycle, or water cycle (courtesy of the US Geological Survey

  11. References and Notes 1. G. E. Smith, G. A. Baraff, J. M. Rowell, Phys. Rev. 135,

    E-Print Network [OSTI]

    Rosakis, Ares J.

    References and Notes 1. G. E. Smith, G. A. Baraff, J. M. Rowell, Phys. Rev. 135, A1118 (1964). 2 the Shear Wave Speed A. J. Rosakis,* O. Samudrala, D. Coker Classical dynamic fracture theories predict surmised. Over the past 50 years, fracture mechanics theories have had enormous success in pre- dicting

  12. ABOUT THE JOURNAL Isis features scholarly articles, research notes, and commentary on

    E-Print Network [OSTI]

    Mateo, Jill M.

    ABOUT THE JOURNAL Isis features scholarly articles, research notes, and commentary on the history and is an important teaching tool. Subscriptions to Isis are concurrent with membership in the History of Science-advertising@press.uchicago.edu ISIS An International review devoted to the history of science and its cultural influences Quarterly

  13. OntoNotes: Sense Pool Verification Using Google N-gram and Statistical Tests

    E-Print Network [OSTI]

    Hovy, Eduard

    ' effectiveness. The OntoNotes [1] project has developed a methodology for producing a large multilingual corpus) the senses weapon and bodypart enables systems to perform word sense disambiguation. But knowing in addition that the weapon sense of "arm" corresponds to the weapon sense of "weapon" and of "arsenal" means that systems can

  14. Notes on L-functions for GL n J.W. Cogdell

    E-Print Network [OSTI]

    Cogdell, James W.

    Notes on L-functions for GL n J.W. Cogdell #3; Oklahoma State University, Stillwater, OK 74078, USA Lectures given at the: School on Automorphic Forms on GL(n) Trieste, 31 July { 18 August 2000 LNS #3's. L-functions of automorphic representations were #12;rst developed by Jacquet and Langlands for GL 2

  15. References and Notes 1. W. J. Bartz, Ed., Engines and Automotive Lubrication

    E-Print Network [OSTI]

    Shapiro, Nikolai

    References and Notes 1. W. J. Bartz, Ed., Engines and Automotive Lubrication (Marcel Dekker, New formulations. 13. The replacement of steel by aluminum is motivated by efforts to reduce vehicle weight to adequately protect aluminum surfaces, automobile manufacturers have had to resort to engines com- posed

  16. Evaluation of HadGEM2 model Hadley Centre technical note 74

    E-Print Network [OSTI]

    Reichler, Thomas

    Evaluation of HadGEM2 model Hadley Centre technical note 74 W.J. Collins, N. Bellouin, M. Doutriaux for attention in HadGEM2. HadGEM2 has substantially improved mean SSTs and wind stress and improved tropical SST. The TRIFFID vegetation scheme had been used in a configuration from a previous generation of Hadley Centre

  17. Technical NoteFEASIBILITY STUDIES OF ALPHA-PARTICLE CHANNELING IN MIRROR MACHINES

    E-Print Network [OSTI]

    Technical NoteFEASIBILITY STUDIES OF ALPHA-PARTICLE CHANNELING IN MIRROR MACHINES A. I. ZHMOGINOV such as mirror machines can benefit this concept by efficiently redirecting a-particle energy to fuel ion heating designs and for proof-of-principle experiments. KEYWORDS: alpha channeling, mirror machines, ray tracing

  18. LBNL-52872/CBP Note 516 A Preliminary Comparative Study of the Electron-Cloud Effect

    E-Print Network [OSTI]

    Furman, Miguel

    LBNL-52872/CBP Note 516 A Preliminary Comparative Study of the Electron-Cloud Effect for the PSR, ISIS, and the ESS M. A. Furman , LBNL, Berkeley, CA 94720, USA and M. T. F. Pivi , SLAC, Menlo Park, CA] obtained with the EC code POSINST [8, 9] that has been developed initially at LBNL, and lately

  19. LBNL-48382, CBP Note-398 SIMULATION RESULTS FOR THE ELECTRON-CLOUD AT THE PSR

    E-Print Network [OSTI]

    Furman, Miguel

    LBNL-48382, CBP Note-398 SIMULATION RESULTS FOR THE ELECTRON-CLOUD AT THE PSR M. A. Furman and M. Pivi , LBNL, Berkeley, CA 94720, USA Abstract We present a first set of computer simulations code that has been developed at LBNL over the past 5 years, suitably augmented to deal with very long

  20. LBNL-48380, CBP Note-396 UPDATED ELECTRON-CLOUD SIMULATION RESULTS FOR THE

    E-Print Network [OSTI]

    Furman, Miguel

    LBNL-48380, CBP Note-396 UPDATED ELECTRON-CLOUD SIMULATION RESULTS FOR THE LARGE HADRON COLLIDER LHC M. A. Furman and M. Pivi, LBNL, Berkeley, CA94720, USA Abstract This paper presents new simulation-cloud effect (ECE) code that has been developed at LBNL over the past five years [3]. We are particularly

  1. LBNL51038, CBP Note441 ELECTRON-CLOUD SIMULATION RESULTS FOR THE PSR AND SNS.

    E-Print Network [OSTI]

    Furman, Miguel

    LBNL­51038, CBP Note­441 ELECTRON-CLOUD SIMULATION RESULTS FOR THE PSR AND SNS. M. Pivi and M. A. Furman, LBNL, Berkeley, CA94720, USA Abstract We present recent simulation results for the main fea for the SNS and for PSR ring obtained with the ECE code that has been developed at LBNL over the past 6 years

  2. LBNL-48383, CBP Note-399 ELECTRON-CLOUD MEASUREMENTS AND SIMULATIONS

    E-Print Network [OSTI]

    Furman, Miguel

    LBNL-48383, CBP Note-399 ELECTRON-CLOUD MEASUREMENTS AND SIMULATIONS FOR THE APS M. A. Furman and M. Pivi, LBNL, Berkeley, CA 94720, USA K. C. Harkay and R. A. Rosenberg, ANL, Argonne, IL 60439, USA at the APS and results from the LBNL simulation code [6, 7]. Specifically, we consider the intensity

  3. LBNL-46223, CBP Note 350 BEAM-BEAM SIMULATIONS FOR SEPARATED BEAMS IN THE LHC

    E-Print Network [OSTI]

    Furman, Miguel

    LBNL-46223, CBP Note 350 BEAM-BEAM SIMULATIONS FOR SEPARATED BEAMS IN THE LHC M. A. Furman, W. C. Turner, Center for Beam Physics, LBNL, Berkeley, CA 94720, USA Abstract We present beam-beam simulation of simulations: (a) to as- sess undesirable effects from LBNL's luminosity monitor- ing scheme for the LHC [2

  4. LBNL-45363, CBP Note 333 BEAM-BEAM SIMULATIONS FOR SEPARATED BEAMS

    E-Print Network [OSTI]

    Furman, Miguel

    LBNL-45363, CBP Note 333 BEAM-BEAM SIMULATIONS FOR SEPARATED BEAMS Miguel A. Furman, Center for Beam Physics, LBNL, Berkeley, CA 94720 Abstract We present beam-beam simulation results from a strong undesirable effects from LBNL's sweeping lumi- nosity monitoring scheme for the LHC [1], and (b) to assess

  5. A Note on Dynamic Data Driven Wildfire Modeling , L.P. Franca1

    E-Print Network [OSTI]

    Douglas, Craig C.

    of the interactions of fire, weather, and fuel, driven by remote sensing data of fire location and land surfaceA Note on Dynamic Data Driven Wildfire Modeling J. Mandel1 , M. Chen1 , L.P. Franca1 , C. Johns1 of Colorado Denver, Denver, CO 80217-3364, USA 2 National Center for Atmospheric Research, Boulder, CO 80307

  6. Physics 214 Notes on Cherenkov radiation Winter 2013 The power spectrum of Cherenkov radiation

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Physics 214 Notes on Cherenkov radiation Winter 2013 The power spectrum of Cherenkov radiation. The radiation emitted by the charge is detected by an observer located at the point #x. We define the unit in time to a very good approximation. In class, we showed that the power spectrum for a radiating charge e

  7. CONDENSATION As noted previously, heat energy imparted to water as it

    E-Print Network [OSTI]

    Brody, James P.

    CONDENSATION As noted previously, heat energy imparted to water as it evaporates is returned to liquid water as vapor condenses. During low tide, the rate of evaporation typically exceeds the rate of condensation, and it is this net rate of evapora- tion that we notice. At times, however, the rate of conden

  8. BRIEFING NOTE SUMMARY OF MATTERS CONSIDERED BY THE MANAGEMENT BOARD ON

    E-Print Network [OSTI]

    for the majority of courses in 2005-06, based on the expected 8% increase in the College's costs for 2005-06's proposals and noted that the Faculties would now start the process of setting premium fees for 2005-06

  9. Note: On the measurement of plasma potential fluctuations using emissive probes

    SciTech Connect (OSTI)

    Bousselin, G., E-mail: guillaume.bousselin@ens-lyon.fr; Lemoine, N.; Cavalier, J.; Heuraux, S.; Bonhomme, G. [IJL, Universit de Lorraine, CNRS (UMR 7198), 54506 Vandoeuvre (France)] [IJL, Universit de Lorraine, CNRS (UMR 7198), 54506 Vandoeuvre (France)

    2014-05-15T23:59:59.000Z

    In this Note, it is pointed out that emissive probes cannot be used to directly and reliably measure plasma potential fluctuations. An experimentally validated model demonstrates indeed that the floating potential fluctuations of an emissive probe which floats at the mean plasma potential depend not only on the plasma potential fluctuations but also on electron density and temperature fluctuations.

  10. *See reverse side for all notes College of Engineering and Computer Science

    E-Print Network [OSTI]

    Mather, Patrick T.

    *See reverse side for all notes College of Engineering and Computer Science Bioengineering NAME Chemistry 1 CHE 1550 3 CHE107 General Chemistry Lab 1 CHE 1550 1 CHE116 General Chemistry 2 CHE 1560 3 CHE117 General Chemistry Lab 2 CHE 1560 1 CHE275 Organic Chemistry 1 CHE 2530 3 CHE276 Organic Chemistry

  11. See reverse side for all notes College of Engineering & Computer Science

    E-Print Network [OSTI]

    Mather, Patrick T.

    Physical Chemistry (3) ENVIRONMENTAL ENGINEERING (35) D=12 CIE272 Civil & Envir. Engr Measurements 3 CIE274See reverse side for all notes College of Engineering & Computer Science Environmental Engineering Chemistry 1 CHEM 1211 3 CHE107 General Chemistry Lab 1 CHEM 1211L 1 CHE116 General Chemistry 2 CHEM 1212 3

  12. *See reverse side for all notes College of Engineering and Computer Science

    E-Print Network [OSTI]

    Mather, Patrick T.

    *See reverse side for all notes College of Engineering and Computer Science Bioengineering NAME Chemistry 1 CH 141 3 CHE107 General Chemistry Lab 1 CH 141 1 CHE116 General Chemistry 2 CH 142 3 CHE117 General Chemistry Lab 2 CH 142 1 CHE275 Organic Chemistry 1 CH 247 3 CHE276 Organic Chemistry Lab 1 CH 247

  13. See reverse side for all notes College of Engineering & Computer Science

    E-Print Network [OSTI]

    Mather, Patrick T.

    Physical Chemistry (3) ENVIRONMENTAL ENGINEERING (35) D=12 CIE272 Civil & Envir. Engr Measurements 3 CIE274See reverse side for all notes College of Engineering & Computer Science Environmental Engineering Chemistry 1 CHEM 110 3 CHE107 General Chemistry Lab 1 CHEM 110 1 CHE116 General Chemistry 2 CHEM 111 3 CHE

  14. See reverse side for all notes College of Engineering & Computer Science

    E-Print Network [OSTI]

    Mather, Patrick T.

    251 Thermodynamics (4) OR CHE346 Physical Chemistry (3) ENGR 2200 ENVIRONMENTAL ENGINEERING (35) D=12See reverse side for all notes College of Engineering & Computer Science Environmental Engineering Chemistry 1 CHEM 1510 3 CHE107 General Chemistry Lab 1 CHEM 1510 1 CHE116 General Chemistry 2 CHEM 1520 3

  15. See reverse side for all notes College of Engineering & Computer Science

    E-Print Network [OSTI]

    Mather, Patrick T.

    Thermodynamics (4) CHE346 Physical Chemistry (3) ENVIRONMENTAL ENGINEERING (35) D=12 CIE272 Civil & Envir. EngrSee reverse side for all notes College of Engineering & Computer Science Environmental Engineering. Equations & Matrix Algebra (3)____ 3 SCIENCES (20) CHE106 General Chemistry I (3)____ 3 CHE107 General

  16. See reverse side for all notes College of Engineering & Computer Science

    E-Print Network [OSTI]

    Mather, Patrick T.

    ) MAE251 Thermodynamics (4) CHE346 Physical Chemistry (3) ENVIRONMENTAL ENGINEERING (35) D=12 CIE272See reverse side for all notes College of Engineering & Computer Science Environmental Engineering. Equations & Matrix Algebra *MA 260 3 SCIENCES (20) CHE106 General Chemistry 1 CH 141 3 CHE107 General

  17. See reverse side for all notes College of Engineering & Computer Science

    E-Print Network [OSTI]

    Mather, Patrick T.

    (3 or 4) EE204 MAE251 Thermodynamics (4) CHE346 Physical Chemistry (3) ENVIRONMENTAL ENGINEERING (35See reverse side for all notes College of Engineering & Computer Science Environmental Engineering 3 MA443 4 MAT485 Diff. Equations & Matrix Algebra MA451 3 SCIENCES (20) CHE106 General Chemistry 1

  18. *See reverse side for all notes College of Engineering and Computer Science

    E-Print Network [OSTI]

    Mather, Patrick T.

    *See reverse side for all notes College of Engineering and Computer Science Bioengineering NAME Chemistry 1 CHE 103 3 CHE107 General Chemistry Lab 1 CHE 103 1 CHE116 General Chemistry 2 CHE 104 3 CHE117 General Chemistry Lab 2 CHE 104 1 CHE275 Organic Chemistry 1 3 CHE276 Organic Chemistry Lab 1 2 PHY211

  19. Technical Note Field Test of Digital Photography Biomass Estimation Technique in Tallgrass Prairie

    E-Print Network [OSTI]

    Morrison, Lloyd W.

    Technical Note Field Test of Digital Photography Biomass Estimation Technique in Tallgrass Prairie unmeasured because of the time required to clip plots and process samples, as well as limited access or proximity to a drying oven. We tested the digital photography biomass estimation technique for measuring

  20. A Note on Karr's Algorithm Markus MullerOlm 1? and Helmut Seidl 2

    E-Print Network [OSTI]

    Seidl, Helmut

    A Note on Karr's Algorithm Markus M?uller­Olm 1? and Helmut Seidl 2 1 FernUniversit?at Hagen, FB ; : : : ; ak are elements of the underlying field of values. #12; 2 Markus M?uller­Olm and Helmut Seidl (where

  1. "Climate change is sure to occur in some form." The study of climate impacts notes

    E-Print Network [OSTI]

    "Climate change is sure to occur in some form." 1 #12;The study of climate impacts notes how scientists generally agree that humans are changing the climate, and that if we continue pumping carbon we learn from past climate variations? How can we best adapt to climate change? This report attempts

  2. FISH PASSAGE CENTER OVERSIGHT BOARD Meeting Notes for May 12, 2008 Walla Walla, Washington

    E-Print Network [OSTI]

    Present: Bruce Measure, John Ferguson, Doug Taki, Dan Goodman, Tony Grover, Steve Crow, Joann Hunt, Kerry Chairman Bruce Measure called the meeting to order and went over the agenda. He said Steve Yundt has taken, he noted. Moving data from the FPC is a minor issue because most of the data is held and maintained

  3. Note LPSC 07-37 The TMSR as Actinide Burner and Thorium Breeder

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Note LPSC 07-37 The TMSR as Actinide Burner and Thorium Breeder E. Merle-Lucotte, D. Heuer, C. Le actinides. Studies [1] have thus been done on the Molten Salt Breeder Reactor (MSBR) [2] of Oak-Ridge to re fluoride salt LiF- ThF4 with 28%- mole 232 Th. This reflector, corresponding to a fertile blanket

  4. Yoram Rubin notes made at the Hydrology Section Award Ceremony, December 2005, San Francisco

    E-Print Network [OSTI]

    Rubin, Yoram

    Yoram Rubin notes made at the Hydrology Section Award Ceremony, December 2005, San Francisco Dear Hydrology Section president Rafael Bras and President-elect George Hornberger, members of the hydrology of the breadth of possibilities that hydrology represents overall. Hence, I was grateful to be reminded, during

  5. SHORTER NOTES An Adiantopsis Hybrid from Northeastern Argentina and Vicinity.--During

    E-Print Network [OSTI]

    Barker, Michael S.

    SHORTER NOTES An Adiantopsis Hybrid from Northeastern Argentina and Vicinity.--During a recent collecting trip to the Parque Nacional Iguazu´, Misiones, Argentina, an unusual specimen of Adiantopsis and often sympatric in the American tropics. In contrast, the hybrid is restricted to Argentina, Brazil

  6. CDF Note 9674 Combined Upper Limit on Standard Model Higgs Boson Production for Winter 2009

    E-Print Network [OSTI]

    Fermilab

    CDF Note 9674 Combined Upper Limit on Standard Model Higgs Boson Production for Winter 2009 The CDF of searches for the Standard Model Higgs boson at CDF. The six major analyses combined are the WH bV/c2 in steps of 5 GeV/c2 , assuming Standard Model decay branching fractions of the Higgs boson

  7. CDF note 9642 Search for the Standard Model Higgs boson in the ET plus jets sample

    E-Print Network [OSTI]

    Fermilab

    CDF note 9642 Search for the Standard Model Higgs boson in the ET plus jets sample The CDF Collaboration URL http://www-cdf.fnal.gov (Dated: August 17, 2009) We search for the Higgs boson produced; the Higgs boson decays into a bb pair. This analysis is an update of the previous one to 3.6 fb-1 of CDF

  8. Introductory Note Commentary: Electro-, loco-, and otromotor components of electric fish behaviour

    E-Print Network [OSTI]

    Nelson, Mark E.

    Introductory Note Commentary: Electro-, loco-, and otromotor components of electric fish behaviour, when we discover the world of weakly electric fish, we learn that the electric organ also qualifies). The electromotor component of electric fish behaviour tends to stand out because it is something unique that other

  9. Atlas SCT/Pixel Grounding and Shielding ATLAS SCT/Pixel Grounding and Shielding Note

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Atlas SCT/Pixel Grounding and Shielding 1 ATLAS SCT/Pixel Grounding and Shielding Note November 22 mostly connects existing mechanical electrical conductive #12; Atlas SCT/Pixel Grounding and Shielding 2 that equivalent. The barrel outer heat shield (150 aluminum) main element shield. #12; Atlas SCT/Pixel Grounding

  10. Thematic note to substantiate Ris's strategy impact on society Competence platforms and exchange of knowledge

    E-Print Network [OSTI]

    of knowledge Impact: Competitive power as high-technology society Introduction The basis of Risø's strategic and will have an impact on Denmark's comparative advantage as a high-technology society: o MaterialsThematic note to substantiate Risø's strategy ­ impact on society Competence platforms and exchange

  11. Thematic note to substantiate Ris's strategy impact on society Customer-driven activities

    E-Print Network [OSTI]

    : Competitive power as high-technology society Introduction Customer-driven activities are activities undertakenThematic note to substantiate Risø's strategy ­ impact on society Customer-driven activities Impact and embedding Risø's research in society and thereby having significant impact. To Risø, the activities provide

  12. Technical note: Characterizing individual milk fat globules with holographic video microscopy

    E-Print Network [OSTI]

    Grier, David

    Technical note: Characterizing individual milk fat globules with holographic video microscopy Fook representation of holographic video microscopy. The sample scatters light from a collimated laser beam. Both to a video camera, which records their interference as a hologram. A typical example of one fat droplet

  13. A note on computing heteroclinic trajectories of non-autonomous maps

    E-Print Network [OSTI]

    Bielefeld, Universität

    A note on computing heteroclinic trajectories of non-autonomous maps Thorsten H¨uls Department Abstract We propose an adequate notion of a heteroclinic trajectory in non- autonomous systems that generalizes the notion of a heteroclinic orbit of an autonomous systems. A heteroclinic trajectory connects

  14. CDF Note 10625 Search for the Standard Model Higgs boson in +

    E-Print Network [OSTI]

    Fermilab

    CDF Note 10625 Search for the Standard Model Higgs boson in + - + jets final state with 8.3fb-1 a search for the Standard Model Higgs boson in + - + jets final state, using CDF Run II data with an integrated luminosity of 8.3 fb-1 . The Signal considered in this search is four Higgs boson production

  15. CDF Note 9999 Combined Upper Limit on Standard Model Higgs Boson Production

    E-Print Network [OSTI]

    Fermilab

    CDF Note 9999 Combined Upper Limit on Standard Model Higgs Boson Production The CDF Collaboration for the Standard Model Higgs boson at CDF. The six major analyses combined are the WH b¯b channels, the WH + ZH E Model decay branching fractions of the Higgs boson and that the ratios of the rates for the WH, ZH, gg

  16. A note on organizational learning and knowledge sharing in the context of communities of practice*

    E-Print Network [OSTI]

    Boyer, Edmond

    A note on organizational learning and knowledge sharing in the context of communities of practice, the characteristics of communities of practice (CoP) will be discussed in more details. 2. Organizational learning learning, and by building and facilitating communities of practice. 2.1 Organizational learning

  17. References and Notes 1. D. H. Reneker, I. Chun, Nanotechnology 7, 216 (1996).

    E-Print Network [OSTI]

    Lynch-Stieglitz, Jean

    1919 References and Notes 1. D. H. Reneker, I. Chun, Nanotechnology 7, 216 (1996). 2. "For science.Yarin, Nanotechnology 12, 384 (2001). 10. R. Dersch et al., J. Polym. Sci. A Polym. Chem. 41, 545 (2003). 11. D. Li, Y). 17. H. Dai et al., Nanotechnology 13, 674 (2002). 18. S.-S. Choi et al., J. Mater. Sci. Lett. 22, 891

  18. Thematic note to substantiate Ris's strategy impact on society Wind energy

    E-Print Network [OSTI]

    Thematic note to substantiate Risø's strategy ­ impact on society Wind energy Impact on society: Sustainable energy supply Introduction The Danish wind turbine industry with approx. 20,000 employees supplies supply approx. 20% of the electricity consumption in the Danish energy system. Hence wind energy

  19. ARDB Technical Note 120 E157 A CONTINUOUS PLASMA FINAL FOCUS

    E-Print Network [OSTI]

    ARDB Technical Note 120 E157 A CONTINUOUS PLASMA FINAL FOCUS David H. Whittum Preface This report Aug 28 - Sept 1, 1989. It was subsequently published as D. H. Whittum, "Continuous plasma final focus, where "100 GeV" is stated, it should have read "100 MeV". #12;LBL-27965 A CONTINUOUS PLASMA FINAL FOCUS

  20. Smith, D.C., et al., 2000 ODP Technical Note 28

    E-Print Network [OSTI]

    Smith, D.C., et al., 2000 ODP Technical Note 28 METHODS FOR QUANTIFYING POTENTIAL MICROBIAL CONTAMINATION DURING DEEP OCEAN CORING 1,2 David C. Smith,3 Arthur J. Spivack,4 Martin R. Fisk,5 Shelley A that these contamination tests be routinely conducted when coring for microbiological studies. 1Smith, D.C., Spivack, A

  1. Energy and Society GSI Section Notes Week of October 6, 2014

    E-Print Network [OSTI]

    Kammen, Daniel M.

    1 Energy and Society GSI Section Notes ­ Week of October 6, 2014 Content: 1. Economic Analysis 2/gallon. After ten years, the car can be sold for $2,000. Draw a cash-flow diagram for 10 years. What

  2. Sussex Mathematics Lecture Notes Numerical Differential Equations (841G1NDE)

    E-Print Network [OSTI]

    Lakkis, Omar

    Sussex Mathematics Lecture Notes Year 2010 Numerical Differential Equations (841G1­NDE) taught 4. Attainable Order of LMMs 130 #12;4 NDE (841G1) Spring 2010 Complete course 5. Construction Appendix. Bibliography B-53 Appendix. Index B-55 #12;NDE (841G1) Spring 2010 0. Contents 5 What's this

  3. *Please note: Some details in syllabus are subject to change City University London and Utrecht University

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    Martin, Ralph R.

    *Please note: Some details in syllabus are subject to change City University London and Utrecht on the course website) In-residence London/Utrecht: 8 July ­ 10 August 2012 Programme requires a total of seven and Utrecht, the Netherlands. This innovative programme provides an ideal opportunity for students to develop

  4. February 2004 567NOTES Ecology, 85(2), 2004, pp. 567574

    E-Print Network [OSTI]

    Behmer, Spencer T.

    February 2004 567NOTES Ecology, 85(2), 2004, pp. 567­574 2004 by the Ecological Society of America. IVEY,1,3 DAVID E. CARR,1 AND MICKY D. EUBANKS2 1Blandy Experimental Farm, University of Virginia, 400 Blandy Farm Lane, Boyce, Virginia 22620 USA 2Department of Entomology and Plant Pathology, 301 Funchess

  5. NATURE METHODS | VOL.1 NO.3 | DECEMBER 2004 | 271 APPLICATION NOTES

    E-Print Network [OSTI]

    Cai, Long

    NATURE METHODS | VOL.1 NO.3 | DECEMBER 2004 | 271 APPLICATION NOTES Hamilton's new cellhost system, such as hand movements for even distri- bution of the cells in the dish, are difficult to imitate using robots of a MICROLAB STAR pipetting robot,a sterile housing equipped with size filtration and two Kendro incubators

  6. RESEARCH NOTE A proposed protocol for nomenclaturally effective DNA barcoding of microalgae

    E-Print Network [OSTI]

    RESEARCH NOTE A proposed protocol for nomenclaturally effective DNA barcoding of microalgae barcoding of microalgae. Phycologia 48: 7074. DOI: 10.2216/08-70.1. A mechanism for giving DNA barcodes nomenclatural status in microalgae via culture-derived epitypes is demonstrated with reference to four species

  7. Pre-Approved1 Chemical Engineering Technical Electives (NOTE: Technical Electives Engineering Electives Bioengineering Electives)2

    E-Print Network [OSTI]

    Dyer, Bill

    EELE 250 Circuits, Devices, and Motors [F,S] 4 EENV 340 Principles of Environmental Engineering [F,S] 3Pre-Approved1 Chemical Engineering Technical Electives (NOTE: Technical Electives Engineering Biochemistry of Macromolecules [F] 3 BIOB 256 Intro Biol: Cells to Organisms [S] 3+1 BIOB 375 General Genetics

  8. Notes and Correspondence Are Tropical Cyclones Less Effectively Formed by Easterly Waves in the

    E-Print Network [OSTI]

    Chen, Tsing-Chang "Mike"

    tropical cyclones in the western North Pacific. By carefully separating easterly waves from the lowerNotes and Correspondence Are Tropical Cyclones Less Effectively Formed by Easterly Waves@iastate.edu #12;1 Abstract It has been observed that the percentage of tropical cyclones originating from easterly

  9. ECOLOGICAL NOTES ON THE SIREX WOOD WASPS AND THEIR By H. S. HANSON.

    E-Print Network [OSTI]

    27 ECOLOGICAL NOTES ON THE SIREX WOOD WASPS AND THEIR PARASITES. By H. S. HANSON. Farnham House on the ecology of the Sirex wood-wasps and their parasites have been collected during a period of several years. The preliminary investigations were carried out by Dr. J. G. Myers, of Farnham House Laboratory, in collaboration

  10. Briefing Note 2010 -2 Tax Fraud from Emissions Trading in the European Union

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    Pedersen, Tom

    Briefing Note 2010 - 2 7 May 2010 Tax Fraud from Emissions Trading in the European Union Neil Tansey and Ivan Watson Issue The European Union Emissions Trading Scheme (EU ETS) began in 2005 as the largest multi-country and multi-sector greenhouse gas emissions trading system in the world by volume

  11. NOTES AND CORRESPONDENCE Surface Melting over Ice Shelves and Ice Sheets as Assessed from Modeled

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    Meissner, Katrin Juliane

    NOTES AND CORRESPONDENCE Surface Melting over Ice Shelves and Ice Sheets as Assessed from Modeled of ice shelves and their progenitor ice sheets. To explore the magnitude of surface melt occurring over) and most of the Greenland Ice Sheet (GIS) by the year 2500. Capping CO2 concentrations at present

  12. LC-PHSM-2000-037 CMS NOTE 2000/046

    E-Print Network [OSTI]

    LC-PHSM-2000-037 CMS NOTE 2000/046 IEKP-KA/2000-15 EPJdirect Comparison of Higgs Boson Mass of Karlsruhe Abstract Two important properties of a Higgs boson are its mass and width. They may distinguish the Standard Model (SM) Higgs boson from Higgs bosons of extended models. We show results from a direct mass

  13. 25 Nov. 1997 Lecture Notes on General Relativity Sean M. Carroll 4 Gravitation

    E-Print Network [OSTI]

    Carroll, Sean M.

    constant no matter what kind of force is being exerted. We also have the law of gravitation, which states25 Nov. 1997 Lecture Notes on General Relativity Sean M. Carroll 4 Gravitation Having paid our case it would be legitimate to start at the top, by stating outright the laws governing physics

  14. December 1997 Lecture Notes on General Relativity Sean M. Carroll 4 Gravitation

    E-Print Network [OSTI]

    Carroll, Sean M.

    constant no matter what kind of force is being exerted. We also have the law of gravitation, which statesDecember 1997 Lecture Notes on General Relativity Sean M. Carroll 4 Gravitation Having paid our. In either case it would be legitimate to start at the top, by stating outright the laws governing physics

  15. Note on Design Criteria for Rainbow-Type Multivariates Jintai Ding1

    E-Print Network [OSTI]

    This was a short note that deals with the design of Rainbow or "stagewise unbalanced oil-and-vinegar" multivariate parameters in current schemes. These can be ameliorated according to an updated list of security design, 2006: Second Draft, TWISC (Taiwan Information Security Center) tech report · September 5, 2006

  16. Lecture Notes in Electrical Engineering Zhihong Qian, Lei Cao, Weilian Su,

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    Qin, Qinghua

    Lecture Notes in Electrical Engineering Volume 126 #12;Zhihong Qian, Lei Cao, Weilian Su, Tingkai protective laws and regulations and therefore free for general use. While the advice and information a spirit of cooperation that leads to new friendship for addressing a wide va- riety of ongoing problems

  17. See attached for all notes College of Engineering and Computer Science

    E-Print Network [OSTI]

    Mather, Patrick T.

    and Statistics+ (4)____ 4 SCIENCES (15) CHE150 General Chem. for Engineers (3)____ 3 CHE151 General ChemSee attached for all notes College of Engineering and Computer Science Electrical Engineering Name397 Calculus 3 (4)____ 4 MAT485 Diff. Equations & Matrix Algebra (3)____ 3 CIS321 Probability

  18. Pre-Approved1 Chemical Engineering Technical Electives (NOTE: Technical Electives Engineering Electives Bioengineering Electives)2

    E-Print Network [OSTI]

    Lawrence, Rick L.

    & Design [S] 3 EIND 354 Engr Probability and Statistics I [F] 3 EIND 434 Project and Engineering Management [F] 3 EMAT 252 Materials Science Laboratory [F,S] 1 EMAT 452 Adv. Engineering Materials [on demand] 3Pre-Approved1 Chemical Engineering Technical Electives (NOTE: Technical Electives Engineering

  19. Technical Note Finger motion sensors for fMRI motor studies

    E-Print Network [OSTI]

    Schaechter, Judith D.

    Technical Note Finger motion sensors for fMRI motor studies Judith D. Schaechter,a,b,* Christopher was not affected by the high static magnetic field (3 T). Increasing the RF power transmitted during fMRI by using monitoring during the fMRI exper- iment allows for crude assessment of whether the subject performed

  20. Notes From the Chair 2 Toward a Clean Energy Future: 4

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    Notes From the Chair 2 Toward a Clean Energy Future: 4 Issues for the Sixth Power Plan Neighborly. As the technology improves and tags become smaller, more fish can be tagged. For salmon, the technology is approaching the e-mail stage, and for sharks the "here-I-am" technology will be in use soon