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We encourage you to perform a real-time search of NLEBeta
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1

Workshop Notes International Workshop  

E-Print Network [OSTI]

Sergei O. Kuznetsov (NRU HSE Moscow) Amedeo Napoli (LORIA Nancy) Sebastian Rudolph (AIFB KIT Karlsruhe) http://www.fca4ai.hse.ru #12;What FCA Can Do for Artificial Intelligence? FCA4AI: An International of the program committee and 11 papers with the highest scores were selected. We thank all the PC members

Paris-Sud XI, Université de

2

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

3

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

4

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

5

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

6

Infrared Surveys for AGN  

E-Print Network [OSTI]

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.

Harding E. Smith

2002-03-06T23:59:59.000Z

7

In Proceedings of 8th Smart Graphics International Conference Lecture Notes in Com-puter Science 3638 Springer 2005  

E-Print Network [OSTI]

In Proceedings of 8th Smart Graphics International Conference ­ Lecture Notes in Com- puter Science that graphics can support reasoning as well as communication. Our contribution introduces the genesis, computer graphics have become an increas- ingly popular tool for communicating results of historical

Paris-Sud XI, Université de

8

Intrinsic AGN Absorption Lines  

E-Print Network [OSTI]

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.

Fred Hamann

2000-06-12T23:59:59.000Z

9

Extinction curves in AGN  

E-Print Network [OSTI]

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.

B. Czerny

2006-12-16T23:59:59.000Z

10

Key note speaker 28/9: Shenggen Fan was appointed director general of the International Food Policy Research  

E-Print Network [OSTI]

are most effective in reducing poverty and generating agricultural growth. Before joining IFPRI, he held), and the Honor Society of Phi Kappa Phi. http://www.agra-alliance.org/ #12;Key note speaker 29/9: Bruce Campbell, Program Director, Coordinating Unit http://ccafs.cgiar.org/ Dr. Bruce Campbell has degrees in Ecology from

11

AGN Heating through Cavities and Shocks  

E-Print Network [OSTI]

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.

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

12

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

SciTech Connect (OSTI)

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.

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

13

Feedback in AGN heating of galaxy clusters  

E-Print Network [OSTI]

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.

M. Hoeft; M. Brueggen

2004-05-21T23:59:59.000Z

14

AGN Activity in Giant LSB Galaxies  

E-Print Network [OSTI]

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.

James Schombert

1998-06-30T23:59:59.000Z

15

Some Comments related to AGN Radio Loudness  

E-Print Network [OSTI]

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.

Ari Laor

2003-12-24T23:59:59.000Z

16

Gamma-ray emitting AGN and GLAST  

E-Print Network [OSTI]

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.

P. Padovani

2007-04-02T23:59:59.000Z

17

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....

18

The lifecycle of powerful AGN outflows  

E-Print Network [OSTI]

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.

Christian R. Kaiser; Philip N. Best

2006-11-07T23:59:59.000Z

19

The lifecycle of powerful AGN outflows  

E-Print Network [OSTI]

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.

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

2006-01-01T23:59:59.000Z

20

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

E-Print Network [OSTI]

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.

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

2008-07-01T23:59:59.000Z

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


21

Investigating a model of optimised AGN feedback  

E-Print Network [OSTI]

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.

Edward C. D. Pope

2011-03-02T23:59:59.000Z

22

Blue Note  

ScienceCinema (OSTI)

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.

Murray Gibson

2010-01-08T23:59:59.000Z

23

Blue Note  

SciTech Connect (OSTI)

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.

Murray Gibson

2007-04-27T23:59:59.000Z

24

On The Nature of Low Luminosity Narrow Line AGN  

E-Print Network [OSTI]

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.

Ari Laor

2003-02-26T23:59:59.000Z

25

AGES: THE AGN AND GALAXY EVOLUTION SURVEY  

SciTech Connect (OSTI)

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.

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

26

The X-ray background and the evolution of AGN  

E-Print Network [OSTI]

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.

Fulvio Pompilio; Fabio La Franca; Giorgio Matt

1999-09-23T23:59:59.000Z

27

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

E-Print Network [OSTI]

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.

Cappi, M; Giustini, M

2013-01-01T23:59:59.000Z

28

187GEOSYNTHETICS INTERNATIONAL S 1997, VOL. 4, NO. 2 Technical Note by J.G. Zornberg and J.P. Giroud  

E-Print Network [OSTI]

of geomembranes by wind. The extension incorporates: (i) the influence on wind uplift of the slope inclination inclination of an exposed geomembrane; (ii) re- vision of the wind uplift tension-strain relationship.P. Giroud UPLIFT OF GEOMEMBRANES BY WIND - EXTENSION OF EQUATIONS ABSTRACT: This technical note presents

Zornberg, Jorge G.

29

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...

30

UHECRs from the Radio Lobes of AGNs  

E-Print Network [OSTI]

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.

F. Fraschetti; F. Melia

2008-10-07T23:59:59.000Z

31

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

E-Print Network [OSTI]

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...

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

2011-01-01T23:59:59.000Z

32

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

33

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

34

Spectral decomposition of broad-line agns and host galaxies  

SciTech Connect (OSTI)

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.

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

35

Measuring AGN Feedback with the Sunyaev-Zel'dovich Effect  

E-Print Network [OSTI]

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...

Scannapieco, Evan; Couchman, H M P

2007-01-01T23:59:59.000Z

36

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...

37

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...

38

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...

39

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...

40

A toroidal black hole for the AGN phenomenon  

E-Print Network [OSTI]

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.

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

2000-08-30T23:59:59.000Z

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


41

Clustering Measurements of broad-line AGNs: Review and Future  

E-Print Network [OSTI]

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...

Krumpe, Mirko; Coil, Alison L

2013-01-01T23:59:59.000Z

42

SUPERNOVAE AND AGN DRIVEN GALACTIC OUTFLOWS  

SciTech Connect (OSTI)

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}.

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

43

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

E-Print Network [OSTI]

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

Watson, Andrew

44

Measuring AGN Feedback with the Sunyaev-Zel'dovich Effect  

E-Print Network [OSTI]

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.

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

2007-09-06T23:59:59.000Z

45

Diagnostics of Plasma Properties in Broad Line Region of AGNs  

E-Print Network [OSTI]

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.

Luka C. Popovic

2003-09-23T23:59:59.000Z

46

The role of an accretion disk in AGN variability  

E-Print Network [OSTI]

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.

B. Czerny

2004-09-10T23:59:59.000Z

47

Radio-AGN Feedback: When the Little Ones were Monsters  

E-Print Network [OSTI]

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.

Williams, W L

2015-01-01T23:59:59.000Z

48

High energy cosmic rays, gamma rays and neutrinos from AGN  

E-Print Network [OSTI]

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.

Yukio Tomozawa

2008-02-03T23:59:59.000Z

49

Average Fe K-alpha emission from distant AGN  

E-Print Network [OSTI]

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...

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

50

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

51

Quickies : intelligent sticky notes  

E-Print Network [OSTI]

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 ...

Mistry, Pranav (Pranav K.)

2008-01-01T23:59:59.000Z

52

Average Fe K-alpha emission from distant AGN  

E-Print Network [OSTI]

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.

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

53

HERMES Internal Note 97005 11 February 1997  

E-Print Network [OSTI]

.Savin Joint Institute for Nuclear Research, Dubna, Russia N.Akopov, Yerevan Physics Institute , Yerevan

54

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

E-Print Network [OSTI]

[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...

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

55

On Black Hole Masses and Radio Loudness in AGN  

E-Print Network [OSTI]

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.

Ari Laor

2000-09-13T23:59:59.000Z

56

Near Infrared observations of Soft X-ray selected AGN  

E-Print Network [OSTI]

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.

D. Grupe; H. -C Thomas

2002-02-21T23:59:59.000Z

57

[On the jet contribution to the AGN cosmic energy budget  

E-Print Network [OSTI]

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.

A. Cattaneo; P. N. Best

2008-12-08T23:59:59.000Z

58

XMM-Newton Observations of AGN Iron Line Profiles  

E-Print Network [OSTI]

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.

James Reeves

2002-11-18T23:59:59.000Z

59

The AGN Hubble Diagram and Its Implications for Cosmology  

E-Print Network [OSTI]

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.

Fulvio Melia

2014-09-27T23:59:59.000Z

60

The AGN Hubble Diagram and Its Implications for Cosmology  

E-Print Network [OSTI]

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...

Melia, Fulvio

2014-01-01T23:59:59.000Z

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


61

Parsec-Scale Jet-Environment Interactions in AGN  

E-Print Network [OSTI]

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.

Matthew L. Lister

2007-07-12T23:59:59.000Z

62

AGN-stimulated Cooling of Hot Gas in Elliptical Galaxies  

E-Print Network [OSTI]

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...

Valentini, Milena

2015-01-01T23:59:59.000Z

63

Suzaku observations of AGN and synergy with GLAST  

SciTech Connect (OSTI)

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.

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

64

Suzaku Observations of AGN and Synergy with GLAST  

SciTech Connect (OSTI)

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.

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

2007-10-29T23:59:59.000Z

65

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:...

66

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...

67

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...

68

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

SciTech Connect (OSTI)

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.

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

69

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...

70

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...

71

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

E-Print Network [OSTI]

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.

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

72

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

E-Print Network [OSTI]

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.

P. Uttley

2005-08-02T23:59:59.000Z

73

Discovery of an ultrasoft transient ROSAT AGN: WPVS007  

E-Print Network [OSTI]

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.

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

1995-06-14T23:59:59.000Z

74

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

75

Matt Johnson Lecture Notes  

E-Print Network [OSTI]

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

Johnson, Matthew

76

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

E-Print Network [OSTI]

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.

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

2008-07-24T23:59:59.000Z

77

Dielectric recombination and stability of warm gas in AGN  

SciTech Connect (OSTI)

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.

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

78

Simulations of the OzDES AGN Reverberation Mapping Project  

E-Print Network [OSTI]

As part of the OzDES spectroscopic survey we are carrying out a large scale reverberation mapping study of $\\sim$500 quasars over five years in the 30 deg$^2$ area of the Dark Energy Survey (DES) supernova fields. These quasars have redshifts ranging up to 4 and have apparent AB magnitudes between $16.8AGN and constrain the radius-luminosity ($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 ...

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

79

Telecommunications International Cell Phone  

E-Print Network [OSTI]

Telecommunications International Cell Phone 1. Fax completed form to 979.847.1111. 2. If you do will be charged. Date Cell Phone Needed Cell Phone Pick-Up Date Cell Phone User Travel Destination(s) United States Number Destination Country Number Cell Phone Type Digital Satellite Cell Phone Return Date Notes

80

INTERNATIONAL International Internship for  

E-Print Network [OSTI]

OFFICE OF INTERNATIONAL AFFAIRS International Internship for Global Leadership Program Student Portugal ­ Laura Sieger Ukraine ­ Mary Brune 2012 Internship Locations #12;Dear Friends and Colleagues of Lehigh University: The International Internship for Global Leadership Program provides Lehigh students

Napier, Terrence

Note: This page contains sample records for the topic "agn notes internal" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

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

E-Print Network [OSTI]

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...

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

2015-01-01T23:59:59.000Z

82

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

SciTech Connect (OSTI)

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.

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

83

Does Dissipation in AGN Disks Couple to the Total Pressure?  

E-Print Network [OSTI]

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.

E. T. Vishniac

1993-08-12T23:59:59.000Z

84

Optical and X-ray Variability of AGNs  

E-Print Network [OSTI]

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.

C. Martin Gaskell

2006-12-30T23:59:59.000Z

85

IC5063: AGN driven outflow of warm and cold gas  

E-Print Network [OSTI]

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.

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

2007-10-05T23:59:59.000Z

86

What Can We Learn from the Smallest AGN?  

E-Print Network [OSTI]

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.

Ari Laor

2007-02-21T23:59:59.000Z

87

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

E-Print Network [OSTI]

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.

Alexei Baskin; Ari Laor

2005-02-22T23:59:59.000Z

88

Class Notes FOUNDATION SYSTEMS  

E-Print Network [OSTI]

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

Jacobs, Laurence J.

89

Forest Service Research Note  

E-Print Network [OSTI]

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

Standiford, Richard B.

90

Computer Engineering Curriculum Notes  

E-Print Network [OSTI]

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

Mather, Patrick T.

91

ELECTRICAL ENGINEERING Curriculum Notes  

E-Print Network [OSTI]

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

Mather, Patrick T.

92

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...

93

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

E-Print Network [OSTI]

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.

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

2005-04-12T23:59:59.000Z

94

Finding AGN in Deep X-ray Flux States with Swift  

E-Print Network [OSTI]

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.

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

95

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

E-Print Network [OSTI]

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...

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

96

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

E-Print Network [OSTI]

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...

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

2010-01-01T23:59:59.000Z

97

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

E-Print Network [OSTI]

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...

Zhu, Yi-Nan

2015-01-01T23:59:59.000Z

98

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

E-Print Network [OSTI]

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.

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

2008-08-29T23:59:59.000Z

99

OPERATOR'S MANUAL IMPORTANT NOTES  

E-Print Network [OSTI]

-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

Kleinfeld, David

100

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

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While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


101

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

SciTech Connect (OSTI)

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.

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

102

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

E-Print Network [OSTI]

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...

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

2011-01-01T23:59:59.000Z

103

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

E-Print Network [OSTI]

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.

Ari Laor

2000-05-08T23:59:59.000Z

104

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

E-Print Network [OSTI]

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...

Capetti, Alessandro

2015-01-01T23:59:59.000Z

105

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

E-Print Network [OSTI]

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.

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

106

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

E-Print Network [OSTI]

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...

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

107

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

E-Print Network [OSTI]

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).

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

108

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

E-Print Network [OSTI]

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...

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

109

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

E-Print Network [OSTI]

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

Norris, Ray

110

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

E-Print Network [OSTI]

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

Greiner, Jochen

111

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

E-Print Network [OSTI]

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...

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

112

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

E-Print Network [OSTI]

, 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

Norris, Ray

113

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

E-Print Network [OSTI]

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

Paris-Sud XI, Université de

114

MSW Application Checklist IMPORTANT NOTES  

E-Print Network [OSTI]

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

Northern British Columbia, University of

115

International Energy Symposium October 31, 2013 Notes by: Mona Sorensen  

E-Print Network [OSTI]

since 2000 However, now less industrial demand now due to closures Forecast for electricity demand-Aloy Power Advisory LLC Toronto, ON Ontario electricity sector supply demand increase was vast and growing

116

HiRho CCD INTERNAL NOTE 31 October 1996  

E-Print Network [OSTI]

by incandescent light) exposure with the Keck low­resolution spectrograph, divided by the same frame averaged over

117

JTTEE5 5:35-41 Technical Note 9 International  

E-Print Network [OSTI]

, it is the only way to achieve high speed flow at the nozzle exit. The nozzle must contract to a minimum area 1950, simple constant-area or straight-bore nozzles were used (see Fig. 1 from Ref 3). According to the development of modern blasting nozzles with a converging-diverging shape and a minimum throat area. Of course

Settles, Gary S.

118

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

SciTech Connect (OSTI)

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.

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

119

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

E-Print Network [OSTI]

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...

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

2010-01-01T23:59:59.000Z

120

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

E-Print Network [OSTI]

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...

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

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


121

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

E-Print Network [OSTI]

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.

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

2009-01-01T23:59:59.000Z

122

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

SciTech Connect (OSTI)

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.

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

123

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

E-Print Network [OSTI]

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

Paris-Sud XI, Université de

124

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

E-Print Network [OSTI]

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.

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

125

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

E-Print Network [OSTI]

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...

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

2014-01-01T23:59:59.000Z

126

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

E-Print Network [OSTI]

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.

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

127

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

E-Print Network [OSTI]

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.

T. Dwelly; M. J. Page

2006-08-23T23:59:59.000Z

128

A note on axial symmetries  

E-Print Network [OSTI]

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.

Christopher Beetle; Shawn Wilder

2013-12-31T23:59:59.000Z

129

Lecture notes Introductory fluid mechanics  

E-Print Network [OSTI]

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

Malham, Simon J.A.

130

Lecture notes Ideal fluid mechanics  

E-Print Network [OSTI]

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

Malham, Simon J.A.

131

Lecture notes Introductory fluid mechanics  

E-Print Network [OSTI]

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

Malham, Simon J.A.

132

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

133

International energy outlook 1996  

SciTech Connect (OSTI)

This International Energy Outlook presents historical data from 1970 to 1993 and EIA`s projections of energy consumption and carbon emissions through 2015 for 6 country groups. Prospects for individual fuels are discussed. Summary tables of the IEO96 world energy consumption, oil production, and carbon emissions projections are provided in Appendix A. The reference case projections of total foreign energy consumption and of natural gas, coal, and renewable energy were prepared using EIA`s World Energy Projection System (WEPS) model. Reference case projections of foreign oil production and consumption were prepared using the International Energy Module of the National Energy Modeling System (NEMS). Nuclear consumption projections were derived from the International Nuclear Model, PC Version (PC-INM). Alternatively, nuclear capacity projections were developed using two methods: the lower reference case projections were based on analysts` knowledge of the nuclear programs in different countries; the upper reference case was generated by the World Integrated Nuclear Evaluation System (WINES)--a demand-driven model. In addition, the NEMS Coal Export Submodule (CES) was used to derive flows in international coal trade. As noted above, foreign projections of electricity demand are now projected as part of the WEPS. 64 figs., 62 tabs.

NONE

1996-05-01T23:59:59.000Z

134

Amnesty International  

ScienceCinema (OSTI)

Martin Ennals est secrtaire gnral d'Amnesty International et fait un discours sur les droits de l'homme

None

2011-04-25T23:59:59.000Z

135

ENGINEERING INTERNATIONAL  

E-Print Network [OSTI]

COURSE GUIDE 2013 UTS: ENGINEERING INTERNATIONAL UNDERGRADUATE w w w.eng.uts.edu.au #12;2 / ENGINEERING IN AUSTRALIA Internationally, Australian universities have a reputation for high quality research developed close links with many international institutions, particularly in Asia. ENGINEERING IN SYDNEY

University of Technology, Sydney

136

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

137

NOTE: OPTIMAL NON-HOMOGENEOUS COMPOSITES FOR ...  

E-Print Network [OSTI]

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

R. Tavakoli

2012-10-02T23:59:59.000Z

138

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

139

NOTES ON PRODUCT SYSTEMS WILLIAM ARVESON  

E-Print Network [OSTI]

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

Arveson, William

140

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

E-Print Network [OSTI]

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.

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

2008-10-06T23:59:59.000Z

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


141

Management Board Briefing Note 26 June 2009 BRIEFING NOTE  

E-Print Network [OSTI]

of the College and the Trust; the use of the College name and the operation of the Joint Research Office. 3 Operating Officer, the Pro-Rector (Education), the Pro-Rector (International Affairs), the Pro

142

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

E-Print Network [OSTI]

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.

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

2015-01-01T23:59:59.000Z

143

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]

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

Blake, Geoffrey

144

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

E-Print Network [OSTI]

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.

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

2006-01-01T23:59:59.000Z

145

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

E-Print Network [OSTI]

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.

Winkler, Hartmut

2015-01-01T23:59:59.000Z

146

BNL ALARA Center: ALARA Notes, No. 9  

SciTech Connect (OSTI)

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.

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

1994-02-01T23:59:59.000Z

147

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

E-Print Network [OSTI]

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

Mateo, Jill M.

148

Lecture notes for criticality safety  

SciTech Connect (OSTI)

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.

Fullwood, R.

1992-03-01T23:59:59.000Z

149

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

150

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

E-Print Network [OSTI]

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.

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

151

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

E-Print Network [OSTI]

[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 ...

Short, C J

2008-01-01T23:59:59.000Z

152

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

E-Print Network [OSTI]

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...

Prasad, Deovrat; Babul, Arif

2015-01-01T23:59:59.000Z

153

All-wavelength Extended Groth strip International Survey: the environment of X-ray sources at z~1  

E-Print Network [OSTI]

We explore the environment of z~1 AGN using a sample of 53 spectroscopically identified X-ray sources in the All-wavelength Extended Groth strip International Survey. We quantify the local density in the vicinity of an X-ray source by measuring the projected surface density of spectroscopically identified optical galaxies within a radius defined by the 3rd nearest neighbour. Our main result is that X-ray selected AGN at z~1 avoid underdense regions at the 99.89% confidence level. Moreover, although we find that the overall population shares the same (rich) environment with optical galaxies of similar U-B and M_B, there is also tentative evidence (96%) that AGN with blue colors (U-Benvironments compared to optical galaxies. We argue that the results above are a consequence of the whereabouts of massive galaxies, capable of hosting supermassive black holes at their centers, with available cold gas reservoirs, the fuel for AGN activity. At z~1 an increasing fraction of such systems are found in dense regions.

A. Georgakakis; K. Nandra; E. S. Laird; M. C. Cooper; B. F. Gerke; J. A. Newman; D. J. Croton; M. Davis; S. M. Faber; A. L. Coil

2006-07-12T23:59:59.000Z

154

Ad Hoc Assessment Committee Meeting Notes  

E-Print Network [OSTI]

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

O'Laughlin, Jay

155

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

E-Print Network [OSTI]

-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

Buratto, Steve

156

International Mathematics Education  

E-Print Network [OSTI]

International Mathematics Education Masters Programme www.uni-bremen.de/international-mathematics-education Professional Development for Mathematics Teachers in International Schools International school mathematics in International Mathematics Education. The programme combines foci in mathematics, education and international

Hoffmeister, Thomas S.

157

PIC Application Notes TechTools PIC Application Notes Page 23  

E-Print Network [OSTI]

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

Peters, Dennis

158

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

159

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

160

Variable VHE gamma-ray emission from non-blazar AGNs  

E-Print Network [OSTI]

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_{\

F. M. Rieger; F. A. Aharonian

2008-05-27T23:59:59.000Z

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


161

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

E-Print Network [OSTI]

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...

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

162

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

E-Print Network [OSTI]

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%.

Haardt, Francesco

2015-01-01T23:59:59.000Z

163

MU INTERNATIONAL DIRECTORY International Directory  

E-Print Network [OSTI]

of Ag., Food & Natural Resources International Programs http://students.missouri.edu/~asa Association of Malaysian Students http://www.missouri.edu/~ctl2m5/index.html Bangladesh Student Association

Taylor, Jerry

164

International Programs and Services International Programs  

E-Print Network [OSTI]

International Programs and Services _______________ 1.5 Page 1 International Programs and Services OFFICE OF INTERNATIONAL PROGRAMS Offices in Laurel Hall (970) 491-5917 www.international.colostate.edu James A. Cooney, Vice Provost for International Affairs The Office of International Programs acts

Stephens, Graeme L.

165

International Programs and Services International Programs  

E-Print Network [OSTI]

International Programs and Services International Programs and Services OFFICE OF INTERNATIONAL PROGRAMS Offices in Laurel Hall (970) 491-5917 international.colostate.edu James A. Cooney, Vice Provost for International Affairs The Office of International Programs acts as a catalyst for ideas that bring about

Collett Jr., Jeffrey L.

166

INTERNATIONAL COURSEGUIDE  

E-Print Network [OSTI]

, Applied Science, Arts and Design, Information Sciences and Engineering. INTERNATIONAL COURSE GUIDE01 #00212K, University of Canberra College #01893E. Information in this guide was correct at time in a competitive global market. This can involve work integrated learning, and in many courses students have

Canberra, University of

167

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...

168

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

E-Print Network [OSTI]

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.

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

169

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

E-Print Network [OSTI]

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).

Delphine Porquet; Jacques Dubau

1999-12-03T23:59:59.000Z

170

CIP Activities Notes from the Office  

E-Print Network [OSTI]

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

Pilyugin, Sergei S.

171

Lecture Notes on Langmuir Probe Diagnostics  

E-Print Network [OSTI]

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

Chen, Francis F.

172

Notes on Slovene and Slavic Etymology  

E-Print Network [OSTI]

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'....

Hamp, Eric P.

1997-01-01T23:59:59.000Z

173

Ad Hoc Assessment Committee Meeting Notes  

E-Print Network [OSTI]

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

O'Laughlin, Jay

174

Ad Hoc Assessment Committee Meeting Notes  

E-Print Network [OSTI]

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

O'Laughlin, Jay

175

Ad Hoc Assessment Committee Meeting Notes  

E-Print Network [OSTI]

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

O'Laughlin, Jay

176

Briefing Note 2010 14 18 August 2010  

E-Print Network [OSTI]

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

Pedersen, Tom

177

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

SciTech Connect (OSTI)

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 ?}.

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

178

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

E-Print Network [OSTI]

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...

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

179

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

E-Print Network [OSTI]

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...

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

2014-01-01T23:59:59.000Z

180

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

E-Print Network [OSTI]

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...

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

2015-01-01T23:59:59.000Z

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


181

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

E-Print Network [OSTI]

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...

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

2006-01-01T23:59:59.000Z

182

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

E-Print Network [OSTI]

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''.

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

2006-01-19T23:59:59.000Z

183

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

E-Print Network [OSTI]

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.

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

184

On the origin of the C IV Baldwin effect in AGN  

E-Print Network [OSTI]

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.

Alexei Baskin; Ari Laor

2004-03-16T23:59:59.000Z

185

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

E-Print Network [OSTI]

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.

Jiming Shi; Julian H. Krolik

2008-02-13T23:59:59.000Z

186

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

E-Print Network [OSTI]

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...

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

2010-01-01T23:59:59.000Z

187

ENERGIES RENOVABLES NOTES FINALS 2006 COGNOMS, NOM ASSISTNCIA TREBALL NOTA  

E-Print Network [OSTI]

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

Batiste, Oriol

188

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

E-Print Network [OSTI]

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

Paris-Sud XI, Université de

189

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

E-Print Network [OSTI]

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

Pretoria, University of

190

GENOMIC RESOURCES NOTE Genomic Resources Notes accepted 1 February 201331 March  

E-Print Network [OSTI]

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

Rieseberg, Loren

191

International H  

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 ProposedUsingFunInfrared LandResponses to EngineeredA GENERAL2 International H 2 O Project

192

International Sunport  

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 ProposedUsingFunInfrared LandResponses to EngineeredA GENERAL2 International HChallenges

193

University of Pittsburgh University Center for International Studies  

E-Print Network [OSTI]

University of Pittsburgh University Center for International Studies Asian Studies Center Foreign to announce a competition for Foreign Language and Area Studies Fellowships (FLASF) for the University time to graduate study. PLEASE NOTE: Awarding of FLAS Fellowships is contingent on receipt of funding

Machery, Edouard

194

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

SciTech Connect (OSTI)

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.

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

195

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

E-Print Network [OSTI]

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...

Krumpe, Mirko; Coil, Alison L

2010-01-01T23:59:59.000Z

196

A note on the foundations of mechanics  

E-Print Network [OSTI]

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.

Ricardo J. Alonso-Blanco; Jess Muoz-Daz

2014-04-04T23:59:59.000Z

197

Xyce parallel electronic simulator release notes.  

SciTech Connect (OSTI)

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.

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

198

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]

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.

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

199

Notes on Effective Bandwidths Frank Kelly  

E-Print Network [OSTI]

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

Kelly, Frank

200

Matlab: applications en mecanique Notes de cours  

E-Print Network [OSTI]

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

Hoepffner, Jérôme

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


201

Application Note (A9) Revision: A  

E-Print Network [OSTI]

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

Johnsen, Snke

202

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

203

Briefing Note 2011 31 17 March 2011  

E-Print Network [OSTI]

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

Pedersen, Tom

204

Briefing Note 2011 30 17 March 2011  

E-Print Network [OSTI]

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

Pedersen, Tom

205

Panel Session Notes Session II: Energy  

E-Print Network [OSTI]

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

Jawitz, James W.

206

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

207

Ad Hoc Assessment Committee Meeting Notes  

E-Print Network [OSTI]

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

O'Laughlin, Jay

208

129A Lecture Notes Weak Interactions I  

E-Print Network [OSTI]

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

Murayama, Hitoshi

209

Nukes (notes on PFFP) Chain reactions  

E-Print Network [OSTI]

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

Browder, Tom

210

CS229 Lecture notes Generative Learning algorithms  

E-Print Network [OSTI]

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

Kosecka, Jana

211

Research Note Fast 2-flip move evaluations  

E-Print Network [OSTI]

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

Hao, Jin-Kao

212

Computer Note A Prototype Object Database for  

E-Print Network [OSTI]

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

Neigel, Joseph E.

213

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

214

Ocean and Sea Ice SAF Technical Note  

E-Print Network [OSTI]

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

Stoffelen, Ad

215

Ocean and Sea Ice SAF Technical Note  

E-Print Network [OSTI]

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

Stoffelen, Ad

216

Ocean and Sea Ice SAF Technical Note  

E-Print Network [OSTI]

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

Stoffelen, Ad

217

AE: Office Supplies Purchasing Stakeholder Survey Notes  

E-Print Network [OSTI]

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

Sheridan, Jennifer

218

COMPUTER SECURITY revision list Subject Notes  

E-Print Network [OSTI]

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

Chothia, Tom

219

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

220

Ocean Engineering 33 (2006) 22092223 Technical Note  

E-Print Network [OSTI]

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

Mohseni, Kamran

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


221

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

222

Briefing Note 2010 19 15 September 2010  

E-Print Network [OSTI]

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

Pedersen, Tom

223

Briefing Note 2010 -17 3 September 2010  

E-Print Network [OSTI]

. 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

Pedersen, Tom

224

Engineering Notes Ice Shape Characterization Using  

E-Print Network [OSTI]

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

Tino, Peter

225

Briefing Note 2011 29 4 February 2011  

E-Print Network [OSTI]

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

Pedersen, Tom

226

Technical Note Improved Coronary MR Angiography Using  

E-Print Network [OSTI]

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

Southern California, University of

227

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

228

Independent Study in Idaho ISI Course BSU Course NOTES  

E-Print Network [OSTI]

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

Barrash, Warren

229

OBERWOLFACH MAY 2006 NOTES BY S. PAUL SMITH  

E-Print Network [OSTI]

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

Smith, S. Paul

230

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

E-Print Network [OSTI]

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...

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

231

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

E-Print Network [OSTI]

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...

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

232

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

E-Print Network [OSTI]

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...

Guo, Fulai

2010-01-01T23:59:59.000Z

233

Briefing Note 2010 23 1 December 2010  

E-Print Network [OSTI]

, it could instead be utilised as a transport fuel (in an internal combustion engine or fuel as a clean fuel for internal combustion engines or as a feedstock for fuel-cells. In both applications-cell) or to produce electricity (without combustion) in a stationary fuel-celliii . Due to the extensive use

Pedersen, Tom

234

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

235

International Student and  

E-Print Network [OSTI]

Admissions Disability Services International Student and Scholar Services International Student of Continuing Education Theresa Ganglghassemlouei and Beth Isensee, International Student and Scholar Services Colleges & Programs Student Outcomes: · Process improvements · Enhance orientation content based

Amin, S. Massoud

236

Wood Resources International  

E-Print Network [OSTI]

Wood Resources International Wood Raw Material Consumption on the Rise Despite Weak Global Economy UNECE Timber Committee Meeting October 7-8, 2003 Geneva, Switzerland Hkan Ekstrm Wood Resources International #12;Wood Resources International Outline Roundwood Removals Roundwood Consumption Raw

237

21 11 13 INTERNATIONAL  

E-Print Network [OSTI]

31 E 32 F 32 #12; iv INTERNATIONAL ERGONOMICS ASSOCIATION #12; 3 INTERNATIONAL ERGONOMICS ASSOCIATION CODE OF CONDUCT ERGONOMICS ASSOCIATION (2006) http://www.iea.cc/browse.php?contID=international_ergonomics_association A6

Yamamoto, Hirosuke

238

The Ultimate Messier Object Log PDF Enter Notes  

E-Print Network [OSTI]

(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

Oldenburg, Carl von Ossietzky Universität

239

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

240

LLW notes. Vol. 11, No. 1  

SciTech Connect (OSTI)

`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.

NONE

1996-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "agn notes internal" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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241

LLW notes, Vol. 11, No. 2  

SciTech Connect (OSTI)

`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.

NONE

1996-03-01T23:59:59.000Z

242

Internal Controls Evaluations  

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

iPortal Space. III. GAO Standards for Internal Control in the Federal Government In 1999, GAO issued revised Standards for Internal Control in the Federal Government. This...

243

Student Trainee (Engineering)- Intern  

Broader source: Energy.gov [DOE]

The purpose of the Pathways Intern Employment Program is to provide the intern with exposure to public service, enhance educational experience, and support educational goals. The program is...

244

International Commitments Management  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Order establishes a process to manage the Department's International Commitments under the administrative direction of the Office of Policy and International Affairs. No cancellation.

2008-11-18T23:59:59.000Z

245

BiographicalNotes HarryLevitt  

E-Print Network [OSTI]

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

Allen, Jont

246

A Note on Hartle-Hawking Vacua  

E-Print Network [OSTI]

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.

Ted Jacobson

1994-07-19T23:59:59.000Z

247

Notes on Black Hole Fluctuations and Backreaction  

E-Print Network [OSTI]

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.

B. L. Hu; Alpan Raval; Sukanya Sinha

1999-01-05T23:59:59.000Z

248

Notes 16. Analysis of tilting pad bearings  

E-Print Network [OSTI]

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...

San Andres, Luis

2010-01-01T23:59:59.000Z

249

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:

250

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]

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

Bureau, Martin

251

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

E-Print Network [OSTI]

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.

Rik J. Williams; Smita Mathur; Fabrizio Nicastro

2007-09-24T23:59:59.000Z

252

Experimental study of bulk storage ignition by hot points Agns Jans*, Douglas Carson  

E-Print Network [OSTI]

points. Materials selected for this study are pulverized coal, wood dust, cocoa powder, alfalfa, rice conditions. 1. Overview Fire and explosion risk is generated by chemical or biological oxidation manuscript, published in "14. International Symposium on Loss Prevention and Safety Promotion in the Process

Paris-Sud XI, Université de

253

STEP Intern Job Description  

Broader source: Energy.gov [DOE]

STEP Intern Job Description, from the Tool Kit Framework: Small Town University Energy Program (STEP).

254

IN TODAY'S PAPER International  

E-Print Network [OSTI]

India's participation in the multi-billion-dollar International Thermonuclear Reactor project which aims

255

Assessor Training International  

E-Print Network [OSTI]

NVLAP Assessor Training International Arrangements #12;Assessor Training 2009: International;Assessor Training 2009: International Arrangements 3 2009 is the 10th anniversary of the signing granted by a signatory to the ILAC Arrangement #12;Assessor Training 2009: International Arrangements 4

256

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

257

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

258

Queer as 3 Three Pound Notes #3  

E-Print Network [OSTI]

. ?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...

Glasgow, M.F.

1993-01-01T23:59:59.000Z

259

Hitler's Jewish Soldiers: Notes, Bibliography and Index  

E-Print Network [OSTI]

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...

Rigg, Bryan Mark

2004-09-01T23:59:59.000Z

260

Note On The Maximal Primes Gaps  

E-Print Network [OSTI]

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).

N. A. Carella

2015-02-05T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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261

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:

262

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:

263

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

264

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

265

Queer as 2 Three Pound Notes #2  

E-Print Network [OSTI]

?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...

Multiple Contributors

1991-01-01T23:59:59.000Z

266

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

E-Print Network [OSTI]

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.

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

1997-11-30T23:59:59.000Z

267

A note on the Lyapunov Equation Alessandro Abate  

E-Print Network [OSTI]

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

Abate, Alessandro

268

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,...

269

A Note on KKT Points of Homogeneous Programs 1'  

E-Print Network [OSTI]

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...

2005-07-11T23:59:59.000Z

270

A note on complexity of multistage stochastic programs  

E-Print Network [OSTI]

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],...

Marcus de Mendes C. R. Reaiche

2014-11-20T23:59:59.000Z

271

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

E-Print Network [OSTI]

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

Tavakoli Rouhollah

2012-08-29T23:59:59.000Z

272

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...

273

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

274

International aeronautical user charges  

E-Print Network [OSTI]

Introduction: 1.1 BACKGROUND AND MOTIVATION Very few issues relating to the international air transportation industry are today as divisive as those pertaining to user charges imposed at international airports and enroute ...

Odoni, Amedeo R.

1985-01-01T23:59:59.000Z

275

International Mathematics Education  

E-Print Network [OSTI]

International Mathematics Education Professional Development for Mathematics Teachers Education(November2012-February2013) Problem Solving and Problem Based Teaching in Mathematics Education(March-June2013) #12;International Mathematics Education - Professional Development for Mathematics Teachers

Hoffmeister, Thomas S.

276

Essays in international trade  

E-Print Network [OSTI]

This thesis is a collection of essays on the effect of trade costs on international trade. Chapter 1 derives and empirically examines how factor proportions determine the structure of commodity trade when international ...

Romalis, John

2001-01-01T23:59:59.000Z

277

Tyndall Briefing Note No. 39 September 2009  

E-Print Network [OSTI]

Senior Consultant on climate change, Mexico The establishment of an international system to provide to adequately address GHG emissions from deforestation to be effective. Whilst deforestation currently represents about a fifth of global GHG emissions, REDD is usually considered a cost- effective (and

Watson, Andrew

278

International Exeter annual report  

E-Print Network [OSTI]

-chancellor's international engagement 68 China and Hong Kong 74 India 78 United States of America 82 United Arab Emirates 88

279

International Exeter annual report  

E-Print Network [OSTI]

-Chancellor's international engagement 66 China and Hong Kong 72 India 76 United States of America 80 United Arab Emirates 86

280

International Freshwater Agreements  

E-Print Network [OSTI]

Population Distribution ..................................................... 16 Population Density per, circa 1995............................................... 20 Dam Density per International River Basin ............................ 25 Africa ................................................................

Wolf, Aaron

Note: This page contains sample records for the topic "agn notes internal" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

International and Finance  

E-Print Network [OSTI]

MSc International Accounting and Finance #12;What is International Accounting and Finance and why involved. Why study International Accounting and Finance at Stirling? One In the most recent Research Assessment Exercise, the University of Stirling's division of Accounting and Finance was rated first equal

Little, Tony

282

International Student Guide Mathematics  

E-Print Network [OSTI]

International Student Guide Mathematics www.swansea.ac.uk/maths www.swansea.ac.uk/science/international #12;Reasons to study at Swansea University Mathematics at Swansea University Established in 1920, 36th and more Over 15,000 students / Over 2,000 International students Strongest in Wales for Mathematics

Harman, Neal.A.

283

Herwig++ 2.0 beta release note.  

E-Print Network [OSTI]

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...

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

284

NOTES AND CORRESPONDENCE Dissipative Losses in Nonlinear Internal Waves Propagating across the  

E-Print Network [OSTI]

, Oregon D. M. FARMER Graduate School of Oceanography, University of Rhode Island, Kingston, Rhode Island E and Hoering in which the potential energy across the wave balances . However, other evidence suggests of kinetic (KE 1/2 ui ui) plus available potential energy (APE), is density, is the rate of energy lost

Smyth, William David

285

From Domestic vs. International to Domestic and International  

E-Print Network [OSTI]

% 20% 30% 40% 50% 60% 70% 80% 90% 100% Domestic International International Domestic 100% 67% 86% 29

Amin, S. Massoud

286

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]

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...

Gandhi, Poshak; Kishimoto, Makoto

2015-01-01T23:59:59.000Z

287

1 ACIT Meeting Notes Advisory Committee for Information Technology  

E-Print Network [OSTI]

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

California at Santa Cruz, University of

288

APPARATUS AND DEMONSTRATION NOTES Jeffrey S. Dunham, Editor  

E-Print Network [OSTI]

. 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

Afanassiev, Iakov

289

1 ACIT Meeting Notes Advisory Committee for Information Technology  

E-Print Network [OSTI]

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

California at Santa Cruz, University of

290

1 ACIT Meeting Notes Advisory Committee for Information Technology  

E-Print Network [OSTI]

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

California at Santa Cruz, University of

291

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

292

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

293

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

294

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

295

Lecture Notes: Support Tree Preconditioners for Laplacian Matrices  

E-Print Network [OSTI]

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

Guattery, Steve

296

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

297

Hybrid optimal control Notes for CIRA course, Bertinoro 2003.  

E-Print Network [OSTI]

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

Piccoli, Benedetto

298

NINDS Notes is published 3 times a year and  

E-Print Network [OSTI]

................................................................................... 7 Small Business Technology Transfer .......................................................................... 5 International Neuroscience Fellowships. Avindra Nath as its new intramural clinical director. Nath is nationally and internationally recognized

299

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

E-Print Network [OSTI]

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

Brown, Michael R.

300

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

E-Print Network [OSTI]

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

California at Santa Cruz, University of

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


301

Roadmap: Political Science International RelationsComparative Politics -Bachelor of Arts  

E-Print Network [OSTI]

Roadmap: Political Science ­ International Relations­Comparative Politics - Bachelor of Arts [AS-BA-POL-IRCP] College of Arts and Sciences Department of Political Science Catalog Year: 2012­2013 Page 1 of 3 | Last Major GPA Important Notes Semester One: [14-17 Credit Hours] POL 10100 American Politics or POL 10300

Sheridan, Scott

302

Roadmap: Political Science International RelationsComparative Politics -Bachelor of Arts  

E-Print Network [OSTI]

Roadmap: Political Science ­ International Relations­Comparative Politics - Bachelor of Arts [AS-BA-POL-IRCP] College of Arts and Sciences Department of Political Science Catalog Year: 2013-2014 Page 1 of 3 | Last Major GPA Important Notes Semester One: [14-17 Credit Hours] POL 10100 American Politics or POL 10300

Sheridan, Scott

303

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

SciTech Connect (OSTI)

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.

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

304

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

E-Print Network [OSTI]

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.

Huirong Yan; A. Lazarian

2006-11-09T23:59:59.000Z

305

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

E-Print Network [OSTI]

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.

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

2013-01-01T23:59:59.000Z

306

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

E-Print Network [OSTI]

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.

A. Dorodnitsyn; T. Kallman; D. Proga

2008-06-23T23:59:59.000Z

307

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

E-Print Network [OSTI]

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...

Dorodnitsyn, A; Proga, D

2008-01-01T23:59:59.000Z

308

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

E-Print Network [OSTI]

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.

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

1998-01-04T23:59:59.000Z

309

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

E-Print Network [OSTI]

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.

Shane P. O'Sullivan; Denise C. Gabuzda

2008-01-31T23:59:59.000Z

310

International Topical Meeting on Nuclear Reactor Thermal hydraulics, NURETH-15 NURETH15-599 Pisa, Italy, May 12-17, 2013  

E-Print Network [OSTI]

The 15th International Topical Meeting on Nuclear Reactor Thermal hydraulics, NURETH-15 NURETH15 of steam explosion shock wave propagation. #12;The 15th International Topical Meeting on Nuclear Reactor to note that stratified melt-coolant configuration can be formed in several scenarios of nuclear reactor

Haviland, David

311

Table Definitions, Sources, and Explanatory Notes  

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 AboutDecemberSteamYear Jan FebThousand Cubicin NorthShale GasInternational &

312

Table Definitions, Sources, and Explanatory Notes  

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 AboutDecemberSteamYear Jan FebThousand Cubicin NorthShale GasInternational &Point of

313

Table Definitions, Sources, and Explanatory Notes  

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 AboutDecemberSteamYear Jan FebThousand Cubicin NorthShale GasInternational &Point

314

Table Definitions, Sources, and Explanatory Notes  

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 AboutDecemberSteamYear Jan FebThousand Cubicin NorthShale GasInternational

315

Table Definitions, Sources, and Explanatory Notes  

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 AboutDecemberSteamYear Jan FebThousand Cubicin NorthShale GasInternationalFutures Prices

316

Table Definitions, Sources, and Explanatory Notes  

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 AboutDecemberSteamYear Jan FebThousand Cubicin NorthShale GasInternationalFutures

317

Table Definitions, Sources, and Explanatory Notes  

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 AboutDecemberSteamYear Jan FebThousand Cubicin NorthShale GasInternationalFuturesCoalbed

318

Internal dosimetry software comparison  

E-Print Network [OSTI]

(ICRP) published in 1979 provided an improved approach for the assessment of internal dose. The ICRP recommendations were implemented in federal regulations promulgated by the Nuclear Regulatory Commission (NRC) in the Code of Federal Regulations (10... in the assessment of internal dose has led to the development of various computer software. In this study, several internal dosimetry codes were examined using a standard set of benchmark problems incorporating authentic exposure data. Personal computer...

Fulmer, Judith Renee

1992-01-01T23:59:59.000Z

319

International petroleum statistics report  

SciTech Connect (OSTI)

This report provides information on current international petroleum production, demand, imports, and stocks. World oil demand and OECD demand data are presented for the years 1970 thru 1995.

NONE

1996-08-01T23:59:59.000Z

320

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

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


321

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

E-Print Network [OSTI]

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

2011-01-01T23:59:59.000Z

322

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...

323

Internal Turing Machines  

E-Print Network [OSTI]

Using nonstandard analysis, we will extend the classical Turing machines into the internal Turing machines. The internal Turing machines have the capability to work with infinite ($*$-finite) number of bits while keeping the finite combinatoric structures of the classical Turing machines. We will show the following. The internal deterministic Turing machines can do in $*$-polynomial time what a classical deterministic Turing machine can do in an arbitrary finite amount of time. Given an element of $\\in HALT$ (more precisely, the $*$-embedding of $HALT$), there is an internal deterministic Turing machine which will take $$ as input and halt in the $"yes"$ state. The language ${}^*Halt$ can not be decided by the internal deterministic Turing machines. The internal deterministic Turing machines can be viewed as the asymptotic behavior of finite precision approximation to real number computations. It is possible to use the internal probabilistic Turing machines to simulate finite state quantum mechanics with infinite precision. This simulation suggests that no information can be transmitted instantaneously and at the same time, the Turing machine model can simulate instantaneous collapse of the wave function. The internal deterministic Turing machines are powerful, but if $P \

Ken Loo

2004-07-28T23:59:59.000Z

324

International Programs in Agriculture  

E-Print Network [OSTI]

International Programs in Agriculture MessagefromtheDirector­ Staying Ahead of Globalization and more prosperous place for all. Fortunately, Purdue International Programs in Agriculture (IPIA) has natural disasters caution us to remember the power of nature. The United Nations Food and Agriculture

325

Blue Award 2012 International  

E-Print Network [OSTI]

Blue Award 2012 · International Student Competition for Sustainable Architecture Sign in: www.blueaward.at Blue Award 2012 · International Student Competition for Sustainable Architecture Organizers Vienna blueaward.at Organizers Vienna University of Technology Department for Spatial and Sustainable Design

326

International for Advanced Studies  

E-Print Network [OSTI]

and Technology at the University of Ulm ICAS-Affiliations The International Center for Advanced Studies in Health in medical technology and pharma- ceutical industry. The International Advisory Panel of ICAS consists, transfer of state-of-the-art clinical technologies, and utilization of methodologies appropriate

Pfeifer, Holger

327

NOTES ON MACDONALD POLYNOMIALS AND THE GEOMETRY OF HILBERT SCHEMES  

E-Print Network [OSTI]

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

Haiman, Mark D.

328

NIST Technical Note 1637 Modeling the Effects of Outdoor Gasoline  

E-Print Network [OSTI]

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

Bentz, Dale P.

329

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...

330

SOFTWARE LOCALIZATION: NOTES ON TECHNOLOGY AND CULTURE Kenneth Keniston  

E-Print Network [OSTI]

, 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

Keniston, Kenneth

331

Supplementary Notes for Actuarial Mathematics for Life Contingent ...  

E-Print Network [OSTI]

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

2011-04-04T23:59:59.000Z

332

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

E-Print Network [OSTI]

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

Petr Hajicek

2002-04-15T23:59:59.000Z

333

Supplementary notes for Math 265 on complex eigenvalues ...  

E-Print Network [OSTI]

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

1998-11-30T23:59:59.000Z

334

Sustainable Development Summer Intern Report 2013 Sustainable Development Summer Intern  

E-Print Network [OSTI]

Sustainable Development Summer Intern Report 2013 Sustainable Development Summer Intern Final amongst university's invested in sustainable development. Our small but mighty size allows us to build through positive sustainable practices. As the Sustainable Development Summer Intern I am fortunate enough

335

Sustainable Development Summer Intern Report 2010 Sustainable Development Summer Intern  

E-Print Network [OSTI]

Sustainable Development Summer Intern Report 2010 1 Sustainable Development Summer Intern Final of Bishop's University. The role of the Sustainable Development Summer Intern (SDSI) is to coordinate and organize sustainable development information and activities during the summer months. Ensuring

336

International petroleum statistics report  

SciTech Connect (OSTI)

The International Petroleum Statistics Report is a monthly publication that provides current international oil data. This report presents data on international oil production, demand, imports, exports and stocks. The report has four sections. Section 1 contains time series data on world oil production, and on oil demand and stocks in the Organization for Economic Cooperation and Development (OECD). Section 2 presents an oil supply/demand balance for the world, in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade in OECD countries.

NONE

1995-10-01T23:59:59.000Z

337

International energy annual 1996  

SciTech Connect (OSTI)

The International Energy Annual presents an overview of key international energy trends for production, consumption, imports, and exports of primary energy commodities in over 220 countries, dependencies, and areas of special sovereignty. Also included are population and gross domestic product data, as well as prices for crude oil and petroleum products in selected countries. Renewable energy reported in the International Energy Annual includes hydroelectric power, geothermal, solar, and wind electric power, biofuels energy for the US, and biofuels electric power for Brazil. New in the 1996 edition are estimates of carbon dioxide emissions from the consumption of petroleum and coal, and the consumption and flaring of natural gas. 72 tabs.

NONE

1998-02-01T23:59:59.000Z

338

INTERNATIONAL SPACE EXPLORATION COORDINATION GROUP  

E-Print Network [OSTI]

space exploration infrastructure standards facilitating interoperability through an international with relevant existing international working groups/ organisations. · Preparation and Organization of a WS1 INTERNATIONAL SPACE EXPLORATION COORDINATION GROUP WORKPLAN Update following 3rd ISECG Meeting

339

LLW Notes, Volume 12, Number 8  

SciTech Connect (OSTI)

Contents include articles entitled: Chem-Nuclear documents new plan for Barnwell; Nebraska releases technical analysis of LLRW facility; Southeast Compact suspends funding for NC facility development; NC governor and Southeast Compact differ on proposed MOU; Midwest Compact to return export fees; State legislators` group revises radioactive waste policy; Internal documents discuss administration`s policy on Ward Valley; BLM issues EA for Ward Valley testing; California DHS, NRC criticize DOI`s testing protocols; Army removes training mines from Ward Valley site; The 1997 gubernatorial elections and a look ahead to 1998; Court throws out case challenging Pennsylvania`s siting law; DOE files notice of appeal in WCS suit; Central Compact moves to dismiss ``Veto`` authority suit; Congress exempts NAS from FACA; Judge sets schedule for Ward Valley case; Court won`t order DOE to accept spent fuel by deadline; NRC chairman expresses concern re CERCLA reauthorization; Senators question EPA`s guidance on remediation; EPA issues guidance, criticizes NRC decommissioning rule; Members of Congress clarify FUSRAP transfer; HLW legislation passes House by wide margin; Takings legislation passes House; Energy and water bill signed into law; and Senate confirms 5 of 6 DOE appointees.

Norris, C.; Brown, H. [eds.; Gedden, R.; Lovinger, T.; Scheele, L.; Shaker, M.A.

1997-12-31T23:59:59.000Z

340

Notes on the MUF-D statistic  

SciTech Connect (OSTI)

Verification of an inventory or of a reported material unaccounted for (MUF) calls for the remeasurement of a sample of items by an inspector followed by comparison of the inspector's data to the facility's reported values. Such comparison is intended to protect against falsification of accounting data that could conceal material loss. In the international arena, the observed discrepancies between the inspector's data and the reported data are quantified using the D statistic. If data have been falsified by the facility, the standard deviations of the D and MUF-D statistics are inflated owing to the sampling distribution. Moreover, under certain conditions the distributions of those statistics can depart markedly from normality, complicating evaluation of an inspection plan's performance. Detection probabilities estimated using standard deviations appropriate for the no-falsification case in conjunction with assumed normality can be far too optimistic. Under very general conditions regarding the facility's and/or the inspector's measurement error procedures and the inspector's sampling regime, the variance of the MUF-D statistic can be broken into three components. The inspection's sensitivity against various falsification scenarios can be traced to one or more of these components. Obvious implications exist for the planning of effective inspections, particularly in the area of resource optimization.

Picard, R.R. (Los Alamos National Lab., NM (USA))

1987-01-01T23:59:59.000Z

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


341

Essays on International Economics  

E-Print Network [OSTI]

Journal of International Economics, Vol. 65, 37599. [33]Journal of Monetary Economics, Vol. 51, No. 1, pp. 132. [Trade, Journal of Monetary Economics, Vol. 54, No. 6, pp.

Cravino, Javier Pablo

2013-01-01T23:59:59.000Z

342

International petroleum statistics report  

SciTech Connect (OSTI)

This report presents data on international oil production, demand, imports, exports, and stocks. World oil production and OECD demand data are for the years 1970 through 1994; OECD stocks from 1973 through 1994; and OECD trade from 1984 through 1994.

NONE

1996-03-01T23:59:59.000Z

343

International petroleum statistics report  

SciTech Connect (OSTI)

This report presents data on international oil production, demand, imports, and stocks. World oil production and OECD demand data are for the years 1970 through 1995; stocks from 1973 through 1995, and trade from 1985 through 1995.

NONE

1996-12-01T23:59:59.000Z

344

CCPPolicyBriefing International  

E-Print Network [OSTI]

: +44 (0)1603 593715 A: UEA, Norwich, NR4 7TJ Modelling international wind energy diffusion: www.uea.ac.uk/ccp T: +44 (0)1603 593715 A: UEA, Norwich, NR4 7TJ

Feigon, Brooke

345

INTERNATIONAL PACIFIC RESEARCH CENTER  

E-Print Network [OSTI]

INTERNATIONAL PACIFIC RESEARCH CENTER APRIL 2004­MARCH 2005 REPORT SCHOOL OF OCEAN AND EARTH RESEARCH HIGHLIGHTS Indo-Pacific Ocean Climate Pacific Research Center Design by: Susan Yamamoto Printed by: Hagadone Printing Company Photo: Waikiki

Wang, Yuqing

346

CSU Office of International  

E-Print Network [OSTI]

CSU Office of International Programs - Education Abroad Program Types Currently 750 programs on the OIP Education Abroad website. CSU, through Division of Continuing Education/ Online Education Abroad website. Transfer Semester, year & possibly summer CSU tuition and fees (All other fees

347

Internal Patent Instructions  

Broader source: Energy.gov [DOE]

The internal patent instructions (IPIs) were originally established as a means for providing a common reference source to all patent counsel offices on centralized instructions, as stated in the...

348

International Studies Degree  

E-Print Network [OSTI]

Attorney Simpson Moncif Law, LLC Customer Service Representative Schindler Elevator Corporation Director Insurance Logistics Account Executive Total Quality Logistics, Inc. Manager of Strategic Planning Eaton Corporation Self-employed/Business Owner Indy Associates, Original Impulse Senior Associate International

Moore, Paul A.

349

International Programs in Agriculture  

E-Print Network [OSTI]

have any questions or comments. Jess Lowenberg-DeBoer Associate Dean and Director of International husband Luc and son Léonce, moved to Kansas for their new venture in farming; and to Corey Kujawa who left

350

INTERNATIONAL ENERGY AND ENVIRONMENT  

E-Print Network [OSTI]

in a heat pump cooling system, thereby alleviating peak electricity consumption and associated emissions substituting for banned fluorocarbon refrigerants, coping with carbon costing and reducing water consumptionINTERNATIONAL ENERGY AND ENVIRONMENT FOUNDATION Computational Fluid Dynamics Modeling

351

international | netl.doe.gov  

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

International Activity in Gasification and Coal to Liquids Development News Gasifipedia Coal-Biomass Feed Advanced Fuels Synthesis Systems Analyses International Activity Project...

352

International petroleum statistics report  

SciTech Connect (OSTI)

This monthly publication provides current international oil data. The Report presents data on international oil production, demand, imports, exports, and stocks. Section 1 contains time series data on world oil production, and on oil demand and stocks in the OECD. Section 2 presents an oil supply/demand balance for the world. Section 3 presents data on oil imports by OECD countries. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade in OECD countries.

Not Available

1994-05-01T23:59:59.000Z

353

International Energy Agency  

Broader source: Energy.gov [DOE]

DOE's market transformation efforts have reached to European and other countries who are part of the international distributed and decentralized energy community. Through its partnership with DOE, the combined heat and power (CHP) program of the International Energy Agency (IEA) conducts research and analysis of CHP markets and deployment efforts around the world and has used lessons learned from U.S. research, development, and deployment efforts to recommend market transformation activities and policies that will lead to new CHP installations worldwide.

354

International Energy Agency  

SciTech Connect (OSTI)

The growing need for international cooperation in energy led to the establishment of the International Energy Agency (IEA) in 1974 as a forum for the 21 participating countries to coordinate their energy planning. The IEA provides a framework within the cooperating efforts of its participating countries which reinforce one another and improve the overall energy situation. This brief report reviews the objectives of the IEA and the activities of the Advisory Council.

Taylor, N.R.

1983-01-01T23:59:59.000Z

355

SWAT Goes International  

E-Print Network [OSTI]

#1; tx H2O | pg. 18 International researchers and program managers in 90 countries around the world use the Soil and Water Assessment Tool (SWAT) model. Germany, the first country interested in SWAT, uses it to model its large watersheds, said... Laboratory. To answer this expanding interest worldwide, the research team organized the first international SWAT conference in 2001 in Germany with 35 participants from 16 countries and five continents presenting 20 papers. ?This conference gave us a...

Wythe, Kathy

2007-01-01T23:59:59.000Z

356

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]

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...

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

2015-01-01T23:59:59.000Z

357

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

E-Print Network [OSTI]

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...

Markowitz, Alex; Nikutta, Robert

2014-01-01T23:59:59.000Z

358

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

SciTech Connect (OSTI)

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.

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

359

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

E-Print Network [OSTI]

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...

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

2015-01-01T23:59:59.000Z

360

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

SciTech Connect (OSTI)

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.

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

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


361

Effect of Shear Displacement Rate on the Internal Shear Strength of GCLs J. S. McCartney1  

E-Print Network [OSTI]

shear strength of geosynthetic clay liners (GCLs) is to replicate behavior noted in the field. However a wider range of shear displacement rates. Introduction The internal shear strength of geosynthetic clay are prefabricated geocomposite materials used in hydraulic barriers as an alternative to compacted clay liners

Zornberg, Jorge G.

362

STEP Intern Reference Check Sheet  

Broader source: Energy.gov [DOE]

STEP Intern Reference Check Sheet, from the Tool Kit Framework: Small Town University Energy Program (STEP).

363

Assessor Training Internal Audits and  

E-Print Network [OSTI]

NVLAP Assessor Training Internal Audits and Management Reviews #12;Assessor Training 2009, quarterly, etc., schedule throughout the year #12;Assessor Training 2009: Internal Audits and Management a copy of the full internal audit schedule. #12;Assessor Training 2009: Internal Audits and Management

364

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

SciTech Connect (OSTI)

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.

NONE

1994-03-01T23:59:59.000Z

365

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

366

UCI International Center 500 E. Peltason Drive, Irvine, CA 926975255 P: 949.824.7249 F: 949.824.3090 intl@uci.edu www.ic.uci.edu IC Office Use Only: Date Received: __________ Advisor's Initials: ___________ Ready for PickUp On: _________________ | Revised  

E-Print Network [OSTI]

UCI International Center 500 E. Peltason Drive, Irvine, CA 926975255 P: 949.824.7249 F: 949, Irvine, CA 926975255. NOTE: A NEW I20/DS2019 WILL BE ISSUED WITHIN 10 BUSINESS DAYS OF TRANSFER RELEASE

Barrett, Jeffrey A.

367

International perspectives on mitigating laboratory biorisks.  

SciTech Connect (OSTI)

The International Perspectives on Mitigating Laboratory Biorisks workshop, held at the Renaissance Polat Istanbul Hotel in Istanbul, Republic of Turkey, from October 25 to 27, 2010, sought to promote discussion between experts and stakeholders from around the world on issues related to the management of biological risk in laboratories. The event was organized by Sandia National Laboratories International Biological Threat Reduction program, on behalf of the US Department of State Biosecurity Engagement Program and the US Department of Defense Cooperative Biological Engagement Program. The workshop came about as a response to US Under Secretary of State Ellen O. Tauscher's statements in Geneva on December 9, 2009, during the Annual Meeting of the States Parties to the Biological Weapons Convention (BWC). Pursuant to those remarks, the workshop was intended to provide a forum for interested countries to share information on biorisk management training, standards, and needs. Over the course of the meeting's three days, participants discussed diverse topics such as the role of risk assessment in laboratory biorisk management, strategies for mitigating risk, measurement of performance and upkeep, international standards, training and building workforce competence, and the important role of government and regulation. The meeting concluded with affirmations of the utility of international cooperation in this sphere and recognition of positive prospects for the future. The workshop was organized as a series of short presentations by international experts on the field of biorisk management, followed by breakout sessions in which participants were divided into four groups and urged to discuss a particular topic with the aid of a facilitator and a set of guiding questions. Rapporteurs were present during the plenary session as well as breakout sessions and in particular were tasked with taking notes during discussions and reporting back to the assembled participants a brief summary of points discussed. The presentations and breakout sessions were divided into five topic areas: 'Challenges in Biorisk Management,' 'Risk Assessment and Mitigation Measures,' 'Biorisk Management System Performance,' 'Training,' and 'National Oversight and Regulations.' The topics and questions were chosen by the organizers through consultation with US Government sponsors. The Chattham House Rule on non-attribution was in effect during question and answer periods and breakout session discussions.

Pinard, William J.; Salazar, Carlos A.

2010-11-01T23:59:59.000Z

368

International energy outlook 1994  

SciTech Connect (OSTI)

The International Energy Outlook 1994 (IEO94) presents an assessment by the Energy Information Administration (EIA) of the outlook for international energy markets between 1990 and 2010. The report is provided as a statistical service to assist energy managers and analysts, both in government and in the private sector. These forecasts are used by international agencies, Federal and State governments, trade associations, and other planners and decisionmakers. They are published pursuant to the Depart. of Energy Organization Act of 1977 (Public Law 95-91), Section 205(c). The IEO94 projections are based on US and foreign government policies in effect on October 1, 1993-which means that provisions of the Climate Change Action Plan unveiled by the Administration in mid-October are not reflected by the US projections.

Not Available

1994-07-01T23:59:59.000Z

369

International energy strategies  

SciTech Connect (OSTI)

The sharp rise in oil prices and the embargo of 1973 to 1974 stimulated a growing interest in international energy questions. One indicator of this interest was the decision in late 1977 to establish an International Association of Energy Economists (IAEE). In 1979 the officers of the IAEE proposed to hold not only an initial annual meeting of the association, but also a two-day Conference on International Energy Issues. Resources for the Future, a Washington-based independent research institute, was asked to cosponsor the two-day conference. These two meetings were held in Washington, DC, on June 4, 5, and 6, 1979. This volume contains the 34 papers of the proceedings, and a separate abstract was prepared for each paper for Energy Abstracts for Policy Analysis (EAPA); 13 papers were selected for Energy Research Abstracts (ERA).

Dunkerley, J. (ed.)

1980-01-01T23:59:59.000Z

370

International energy annual 1997  

SciTech Connect (OSTI)

The International Energy Annual presents an overview of key international energy trends for production, consumption, imports, and exports of primary energy commodities in over 220 countries, dependencies, and areas of special sovereignty. Also included are population and gross domestic product data, as well as prices for crude oil and petroleum products in selected countries. Renewable energy reported in the International Energy Annual includes hydroelectric power and geothermal, solar, and wind electric power. Also included are biomass electric power for Brazil and the US, and biomass, geothermal, and solar energy produced in the US and not used for electricity generation. This report is published to keep the public and other interested parties fully informed of primary energy supplies on a global basis. The data presented have been largely derived from published sources. The data have been converted to units of measurement and thermal values (Appendices E and F) familiar to the American public. 93 tabs.

NONE

1999-04-01T23:59:59.000Z

371

International petroleum statistics report  

SciTech Connect (OSTI)

This document is a monthly publication that provides current international oil data. The Report presents data on international oil production, demand, imports, exports, and stocks. Section 1 contains time series data on world oil production, and on oil demand and stocks in the OECD. Section 2 presents an oil supply/demand balance for the world. This balance is presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. Section 4 presents annual time series data on world oil production and oil stocks, demand and trade in OECD countries.

Not Available

1994-12-01T23:59:59.000Z

372

Agnes von Matuschka Grndungsservice  

E-Print Network [OSTI]

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

Wichmann, Felix

373

AGN and Cooling Flows  

E-Print Network [OSTI]

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.

James Binney

2001-03-23T23:59:59.000Z

374

Technical Notes Determination of Condensed Tannin Monomers in  

E-Print Network [OSTI]

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

Hernes, Peter J.

375

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

376

Research Note True Metabolizable Energy for Seeds of Common Moist-  

E-Print Network [OSTI]

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

Dugger, Bruce

377

Note on the size of binary Armstrong codes Aart Blokhuis  

E-Print Network [OSTI]

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

Brouwer, Andries E.

378

Note on the size of binary Armstrong codes Aart Blokhuis  

E-Print Network [OSTI]

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

Brouwer, Andries E.

379

MATH 1503 Introduction to Linear Algebra Notes on MATLAB  

E-Print Network [OSTI]

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

Monson, Barry

380

Research Note Effects of Coastal Lighting on Foraging Behavior  

E-Print Network [OSTI]

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

Branch, Lyn C.

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381

A note on independent-disjoint analysis of network reliability  

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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

Traldi, Lorenzo

382

1 ACIT Meeting Notes ACTION ITEMS ASSIGNED TO DELIVER BY  

E-Print Network [OSTI]

-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

California at Santa Cruz, University of

383

RIS-M-2411 A NOTE ON WIND GENERATOR INTERACTION  

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#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

384

SCIENTIFIC NOTE Variations in daily quality assurance dosimetry from device  

E-Print Network [OSTI]

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

Yu, K.N.

385

NOTE AND COMMENT Liza S. Comita Gregory R. Goldsmith  

E-Print Network [OSTI]

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

Goldsmith, Greg

386

Note d'information Contribution la matrise des problmes  

E-Print Network [OSTI]

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

Boyer, Edmond

387

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

E-Print Network [OSTI]

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

La Rosa, Andres H.

388

Technical Note Theoretical analysis of film condensation heat transfer  

E-Print Network [OSTI]

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

Zhao, Tianshou

389

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

390

Software Verification and Testing Lecture Notes: Testing I  

E-Print Network [OSTI]

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

Struth, Georg

391

A note on geodesic foliations on the torus Pierre Mounoud  

E-Print Network [OSTI]

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

Mounoud, Pierre

392

A CAUTIONARY NOTE REGARDING THE DATA INTEGRITY CAPACITY  

E-Print Network [OSTI]

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

Irvine, Cynthia E.

393

National Radio Astronomy Observatory Electronics Division Technical Note No. 219  

E-Print Network [OSTI]

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

Groppi, Christopher

394

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

395

Notes on non-commutative integration Antoine Flattot  

E-Print Network [OSTI]

[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

Flattot, Antoine

396

NSF ITR Project General Notes on Trypsin Test Procedure  

E-Print Network [OSTI]

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

Kaber, David B.

397

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

398

LUCIFERASE ASSAY PROTOCOL FROM TRANSFORMED TISSUE Special Note  

E-Print Network [OSTI]

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

Raizada, Manish N.

399

A Note on Hamilton Cycles in Kneser Graphs Ian Shields  

E-Print Network [OSTI]

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

Savage, Carla D.

400

Branden Fitelson Philosophy 290 Notes 1 Conditionals Seminar: Day 2  

E-Print Network [OSTI]

: ­ 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

Fitelson, Branden

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to obtain the most current and comprehensive results.


401

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

402

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

E-Print Network [OSTI]

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

Murayama, Hitoshi

403

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

E-Print Network [OSTI]

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

Murayama, Hitoshi

404

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

405

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

406

CDF Note 10796 Search for Standard Model Higgs Boson Production  

E-Print Network [OSTI]

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

Fermilab

407

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

E-Print Network [OSTI]

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

Willson. J.D.

408

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

409

Oldenburg Lecture Notes in Software Engineering Energy-Efficient Applications  

E-Print Network [OSTI]

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

Appelrath, Hans-Jürgen

410

These notes are from 2010 Cap and Trade Working Already  

E-Print Network [OSTI]

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

Toohey, Darin W.

411

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

412

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

413

Advanced Calculus I (Math 309) Fall 2005 Lecture Notes  

E-Print Network [OSTI]

); (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

Bohner, Martin

414

(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

415

(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

416

(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

417

(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

418

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

419

BLUE: An Interactive Visualization System for Categorical Data Technical Note  

E-Print Network [OSTI]

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

Kerbs, R. W.

420

Strategic Planning Notes MT AHEC/MORH Advisory Board  

E-Print Network [OSTI]

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

Dyer, Bill

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421

A Note on Enumeration of One-Vertex Maps  

E-Print Network [OSTI]

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

Petkovsek, Marko

422

Technical Note Ultrasound Probe with Integrated ECG Lead: Feasibility Study  

E-Print Network [OSTI]

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

Smith, Stephen

423

Notes for Graduate Course "Graphs, Spectral Theory, and  

E-Print Network [OSTI]

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

Miller, Stephen David

424

International petroleum statistics report  

SciTech Connect (OSTI)

The International Petroleum Statistics Report is a monthly publication that provides current international oil data. This report is published for the use of Members of Congress, Federal agencies, State agencies, industry, and the general public. Publication of this report is in keeping with responsibilities given the Energy Information Administration in Public Law 95-91. The International Petroleum Statistics Report presents data on international oil production, demand, imports, and stocks. The report has four sections. Section 1 contains time series data on world oil production, and on oil demand and stocks in the Organization for Economic Cooperation and Development (OECD). This section contains annual data beginning in 1985, and monthly data for the most recent two years. Section 2 presents an oil supply/demand balance for the world. This balance is presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. This section contains annual data for the most recent year, quarterly data for the most recent two quarters, and monthly data for the most recent twelve months. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade in OECD countries. World oil production and OECD demand data are for the years 1970 through 1995; OECD stocks from 1973 through 1995; and OECD trade from 1985 through 1995.

NONE

1997-05-01T23:59:59.000Z

425

INTERNATIONAL PACIFIC RESEARCH CENTER  

E-Print Network [OSTI]

INTERNATIONAL PACIFIC RESEARCH CENTER APRIL 2005­MARCH 2006 REPORT SCHOOL OF OCEAN AND EARTH Center 1 The Year's Highlights 3 Indo-Pacific Ocean Climate 4 Regional-Ocean Influences 10 Asian Ocean Climate: To understand climate variations in the Pacific and Indian oceans on interannual

Wang, Yuqing

426

International Pacific Research Center  

E-Print Network [OSTI]

International Pacific Research Center APRIL 2007­MARCH 2008 REPORT School of Ocean and Earth Center i Foreword ii iv Indo-Pacific Ocean Climate 1 Regional-Ocean Influences 13 Asian by the following broad research themes and goals of the IPRC Science Plan. Indo-Pacific Ocean Climate

Wang, Yuqing

427

Internal Control Program  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To ensure sound internal controls and overall consistency in exercising the statutory authorities that vest in the Secretary, the Administrator, National Nuclear Security Administration (NNSA), and Department's Chief Financial Officer (CFO), and to implement the Federal Managers' Financial Integrity Act of 1982 and related central agency guidance. Cancels DOE O 413.1A.

2008-10-28T23:59:59.000Z

428

Requirements for Xenon International  

SciTech Connect (OSTI)

This document defines the requirements for the new Xenon International radioxenon system. The output of this project will be a Pacific Northwest National Laboratory (PNNL) developed prototype and a manufacturer-developed production prototype. The two prototypes are intended to be as close to matching as possible; this will be facilitated by overlapping development cycles and open communication between PNNL and the manufacturer.

Hayes, James C.; Ely, James H.

2013-09-26T23:59:59.000Z

429

INTERNATIONAL COUNCIL FOR SCIENCE  

E-Print Network [OSTI]

of the African Climate System (VACS) Panel 13 and15 July 2006 Tanzanian Meteorology Agency, Dar es Salaam Workshop (see workshop report no. XXXXX). The first day was held jointly with the workshop at the Dar es Salaam International Conference Centre. The rest of the meeting was kindly hosted at the Tanzania

Quartly, Graham

430

Formula Hybrid International Competition  

E-Print Network [OSTI]

, and computerized control systems. But the greatest obstacle of all was that hybrid cars could not meet newlyFormula Hybrid International Competition May 4, 5, 6, 2009 #12;09 annual third We are thrilled to have 30 cars competing this year. The competition is the result of the hard work of many people

Carver, Jeffrey C.

431

INTERNATIONAL PACIFIC RESEARCH CENTER  

E-Print Network [OSTI]

INTERNATIONAL PACIFIC RESEARCH CENTER Annual Report April 2006 March 2007 School of Ocean Research Center 1 2 The Year's Highlights 3 Research Accomplishments Indo-Pacific Ocean Climate 4 Regional-Ocean Ocean Climate: To understand climate variations in the Pacific and Indian oceans on inter- annual

Wang, Yuqing

432

International Energy Policy in  

E-Print Network [OSTI]

Hana Kim Jinmi Kim Lily Lamptey Job Taminiau Mayuri Utturkar Yan Wei Center for EnergyInternational Energy Policy in the Aftermath of the Fukushima Nuclear Disaster An Analysis of Energy Policies of the U.S., U.K., Germany, France, Japan, China and Korea November 2013 #12;Mailing

Delaware, University of

433

Internal split field generator  

DOE Patents [OSTI]

A generator includes a coil of conductive material. A stationary magnetic field source applies a stationary magnetic field to the coil. An internal magnetic field source is disposed within a cavity of the coil to apply a moving magnetic field to the coil. The stationary magnetic field interacts with the moving magnetic field to generate an electrical energy in the coil.

Thundat; Thomas George (Knoxville, TN); Van Neste, Charles W. (Kingston, TN); Vass, Arpad Alexander (Oak Ridge, TN)

2012-01-03T23:59:59.000Z

434

admission guide International  

E-Print Network [OSTI]

Networks Computer Science Computer Science: Computer Game Design Electrical Engineering Communications2015/ 2016 admission guide International First-Year Students #12;2 3 WORLDWIDE RECOGNITION (2008, Science Watch) (2007, Science Watch) (2013, Times Higher Education World University Rankings) (2014, Times

California at Santa Cruz, University of

435

Equity in international agreements  

SciTech Connect (OSTI)

Approaches to establishing equitable greenhouse gas emission policies among different nations are briefly discussed. The impact of energy efficiency is proposed as an aid to equitable resource distribution. A comprehensive approach which would account for changes in net greenhouse gases is discussed. In addition, international trading of net greenhouse gas emissions reduction credits is proposed.

Stewart, R. [Georgetown Univ. Law Center, Washington, DC (United States)

1992-12-31T23:59:59.000Z

436

Combined Federal Campaign Opening Event Hits a High Note | Department...  

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

hope to raise 1,525,000 to aid local, national and international charities that provide health care, medical research, disaster relief and housing assistance, among many other...

437

The fixed structurally robust internal model principle for linear multivariable regulators  

E-Print Network [OSTI]

)]~ = 0 where all the poles must be within C . The property described by (6) is defined as loop stability, Note that loop s . ability does not guarantee internal stability since un'table canoelle, t'ion may occur in the ce. . cede of T(s, 0, )F(s). W(s... for the degree of I'V. STER OF S"IENCE Vay 1980 Va jor Sub jec ~: Elec+r ical Engineering THE FIXED STRUCTURALLY ROBUST INTERNAL MODEL PRINCIPLE FOR LINEAR MULTIVARIABLE REGUIATORS A Thesis by JOHN THOMAS MCGRATH Aoproved as to style and content by...

McGrath, John Thomas

2012-06-07T23:59:59.000Z

438

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 -...

439

International Relations and Development Studies  

E-Print Network [OSTI]

& Anthropology and Languages (choice of French, Arabic, German, Italian or Spanish) The International Relations Economy, Languages (French, Spanish, Arabic, German, Italian), International Trade, Middle East Politics experience a broad range of opportunities outside the classroom: - Explore exchange opportunities with dozens

440

International migration within Latin America  

E-Print Network [OSTI]

International migration within Latin America ·Mostly labor circulation flows ·Industrial and urban;Example of International migration: Mexicans to US ·1920s revolution and post- revolution chaos in Mexico

Lopez-Carr, David

Note: This page contains sample records for the topic "agn notes internal" from the National Library of EnergyBeta (NLEBeta).
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441

International Nuclear Security  

SciTech Connect (OSTI)

This presentation discusses: (1) Definitions of international nuclear security; (2) What degree of security do we have now; (3) Limitations of a nuclear security strategy focused on national lock-downs of fissile materials and weapons; (4) What do current trends say about the future; and (5) How can nuclear security be strengthened? Nuclear security can be strengthened by: (1) More accurate baseline inventories; (2) Better physical protection, control and accounting; (3) Effective personnel reliability programs; (4) Minimize weapons-usable materials and consolidate to fewer locations; (5) Consider local threat environment when siting facilities; (6) Implement pledges made in the NSS process; and (7) More robust interdiction, emergency response and special operations capabilities. International cooperation is desirable, but not always possible.

Doyle, James E. [Los Alamos National Laboratory

2012-08-14T23:59:59.000Z

442

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

443

International petroleum statistics report  

SciTech Connect (OSTI)

This report presents data on international oil production, demand, imports, exports, and stocks. Section 1 contains time series data on world oil production, and on oil demand and stocks in the OECD. Section 2 presents an oil supply/demand balance for the world, presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. Section 4 presents annual time series data on world oil production, oil stocks, demand, and trade in OECD countries.

Not Available

1994-06-01T23:59:59.000Z

444

International petroleum statistics report  

SciTech Connect (OSTI)

This document is a monthly publication which provides current data on international oil production,demand,imports and stocks. This report has four sections which contain time series data on world oil production and oil demand and stocks in the Organization for Economic Cooperation and Development (OECD). Also included is oil supply/demand balance information for the world, and data on oil imports and trade by OECD countries.

NONE

1997-11-01T23:59:59.000Z

445

Polarized internal target apparatus  

DOE Patents [OSTI]

A polarized internal target apparatus with a polarized gas target of improved polarization and density achieved by mixing target gas atoms with a small amount of alkali metal gas atoms, and passing a high intensity polarized light source into the mixture to cause the alkali metal gas atoms to become polarized which interact in spin exchange collisions with target gas atoms yielding polarized target gas atoms.

Holt, Roy J. (Downers Grove, IL)

1986-01-01T23:59:59.000Z

446

Polarized internal target apparatus  

DOE Patents [OSTI]

A polarized internal target apparatus with a polarized gas target of improved polarization and density (achieved by mixing target gas atoms with a small amount of alkali metal gas atoms, and passing a high intensity polarized light source into the mixture to cause the alkali metal gas atoms to become polarized which interact in spin exchange collisions with target gas atoms yielding polarized target gas atoms) is described.

Holt, R.J.

1984-10-10T23:59:59.000Z

447

International markets for CCTs  

SciTech Connect (OSTI)

The paper begins by describing the role of the International Energy Agency, the importance of coal, what the IEA is doing in the area of clean coal technology, and the role of the IEA Coal Industry Advisory Board. The paper then discusses which coal technologies will be chosen, what the problem areas are, and what can be done to accelerate the take-up of clean coal technologies.

Ferriter, J.P. [International Energy Agency, Paris (France)

1997-12-31T23:59:59.000Z

448

International Agreements/Collaborations  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensionalthe10 DOE Vehicle Technologies and HydrogenAmericanInternational

449

Hanford internal dosimetry program manual  

SciTech Connect (OSTI)

This document describes the Hanford Internal Dosimetry program. Program Services include administrating the bioassay monitoring program, evaluating and documenting assessments of internal exposure and dose, ensuring that analytical laboratories conform to requirements, selecting and applying appropriate models and procedures for evaluating internal radionuclide deposition and the resulting dose, and technically guiding and supporting Hanford contractors in matters regarding internal dosimetry. 13 refs., 16 figs., 42 tabs.

Carbaugh, E.H.; Sula, M.J.; Bihl, D.E.; Aldridge, T.L.

1989-10-01T23:59:59.000Z

450

International Perspective on Fukushima Accident  

Broader source: Energy.gov [DOE]

Presenter: Miroslav Lipr, Head, Operational Safety Section, Department of Nuclear Safety and Security, International Atomic Energy Agency

451

International petroleum statistics report  

SciTech Connect (OSTI)

The International Petroleum Statistics Report is a monthly publication that provides current international data. The report presents data on international oil production, demand, imports, and stocks. The report has four sections. Section 1 contains time series data on world oil production, and on oil demand and stocks in the Organization for Economic Cooperation and Development (OECD). This section contains annual data beginning in 1985, and monthly data for the most recent two years. Section 2 presents an oil supply/demand balance for the world. This balance is presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. This section contains annual data for the most recent year, quarterly data for the most recent two quarters, and monthly data for the most recent 12 months. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade in OECD countries. World oil production and OECD demand data are for the years 1970 through 1996; OECD stocks from 1973 through 1996; and OECD trade from 1986 through 1996.

NONE

1997-07-01T23:59:59.000Z

452

TOWARDS INTERNATIONAL STANDARDS FOR LANGUAGE  

E-Print Network [OSTI]

) developed by the International Standards Organization TC32 SC4, which is to serve as a basis for harmonizing. It is in this context that a committee of the International Standards Organization (ISO), TC 37/SC 4Chapter # TOWARDS INTERNATIONAL STANDARDS FOR LANGUAGE RESOURCES Nancy Ide and Laurent Romary

Ide, Nancy

453

TOWARDS INTERNATIONAL STANDARDS FOR LANGUAGE  

E-Print Network [OSTI]

) developed by the International Standards Organization TC32 SC4, which is to serve as a basis for harmonizingChapter # TOWARDS INTERNATIONAL STANDARDS FOR LANGUAGE RESOURCES Nancy Ide and Laurent Romary-284" #12;2 Chapter # Language Engineering Standards (EAGLES) and the International Standard for Language

Boyer, Edmond

454

International Phenomenological Society On Nominalism  

E-Print Network [OSTI]

International Phenomenological Society On Nominalism Author(s): Geoffrey Hellman Source: Philosophy and Phenomenological Research, Vol. 62, No. 3 (May, 2001), pp. 691-705 Published by: International Phenomenological contact support@jstor.org. . International Phenomenological Society is collaborating with JSTOR

Hellman, Geoffrey

455

MENTAL HEALTH and INTERNATIONAL STUDENTS  

E-Print Network [OSTI]

MENTAL HEALTH and INTERNATIONAL STUDENTS: What Educators Need to Know Ingle International cares not adequately researched, it is well accepted by health care professionals that early intervention could about you and your students www.studyinsured.com #12;www.studyinsured.comMental Health and International

456

International Finance and Climate Change  

E-Print Network [OSTI]

International Finance and Climate Change Thursday, October 17, 2013 Breakfast ­ 8:30 a Principal Climate Change Specialist, Climate Business Group at International Finance Corporation, World Bank Group Vladimir Stenek Senior Climate Change Specialist, Climate Business Department of the International

Zhang, Junshan

457

International Fuel Services and Commercial Engagement | Department...  

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

International Fuel Services and Commercial Engagement International Fuel Services and Commercial Engagement The Office of International Nuclear Energy Policy and Cooperation...

458

International Electricity Trade - Open Access | Department of...  

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

International Electricity Trade - Open Access International Electricity Trade - Open Access DOE has consistently expressed its policy that international electricity trade should be...

459

LLW Notes, Volume 9, Number 6. October 1994  

SciTech Connect (OSTI)

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.

NONE

1994-10-01T23:59:59.000Z

460

Service-Oriented Architectures and Web Services: Course Tutorial Notes  

E-Print Network [OSTI]

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.

Mokhov, Serguei A

2009-01-01T23:59:59.000Z

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


461

seminar.sty A LATEX style for slides and notes  

E-Print Network [OSTI]

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

Ihn, Thomas

462

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

SciTech Connect (OSTI)

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.

NONE

1994-12-01T23:59:59.000Z

463

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

SciTech Connect (OSTI)

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.

NONE

1994-09-01T23:59:59.000Z

464

A Note on Online Load Balancing for Related Machines  

E-Print Network [OSTI]

(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

Eckmiller, Rolf

465

Notes 15. Identification of parameters in mechanical systems  

E-Print Network [OSTI]

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...

San Andres, Luis

2008-01-01T23:59:59.000Z

466

STRUCTURE NOTE Conformational Variation of Calcium-Bound Troponin C  

E-Print Network [OSTI]

­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

Phillips, George N. Jr.

467

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

SciTech Connect (OSTI)

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.

Russo, Thomas V.

2013-08-01T23:59:59.000Z

468

Ocena ?lanka Notes on Slovene and Slavic Etymology  

E-Print Network [OSTI]

', 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...

ivic Dular, Alenka

1997-01-01T23:59:59.000Z

469

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

E-Print Network [OSTI]

-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...

Davis, William B.

2012-04-09T23:59:59.000Z

470

Advanced Calculus I (Math 309) Fall 2002 Lecture Notes  

E-Print Network [OSTI]

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

Bohner, Martin

471

Advanced Calculus I (Math 309) Fall 2003 Lecture Notes  

E-Print Network [OSTI]

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

Bohner, Martin

472

Notes 14. Experimental identification of bearing force coefficients  

E-Print Network [OSTI]

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...

San Andres, Luis

2009-01-01T23:59:59.000Z

473

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

474

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

E-Print Network [OSTI]

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

2010-01-01T23:59:59.000Z

475

INTERNAL REPAIR OF PIPELINES  

SciTech Connect (OSTI)

The two broad categories of deposited weld metal repair and fiber-reinforced composite liner repair technologies were reviewed for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Preliminary test programs were developed for both deposited weld metal repair and for fiber-reinforced composite liner repair. Evaluation trials have been conducted using a modified fiber-reinforced composite liner provided by RolaTube and pipe sections without liners. All pipe section specimens failed in areas of simulated damage. Pipe sections containing fiber-reinforced composite liners failed at pressures marginally greater than the pipe sections without liners. The next step is to evaluate a liner material with a modulus of elasticity approximately 95% of the modulus of elasticity for steel. Preliminary welding parameters were developed for deposited weld metal repair in preparation of the receipt of Pacific Gas & Electric's internal pipeline welding repair system (that was designed specifically for 559 mm (22 in.) diameter pipe) and the receipt of 559 mm (22 in.) pipe sections from Panhandle Eastern. The next steps are to transfer welding parameters to the PG&E system and to pressure test repaired pipe sections to failure. A survey of pipeline operators was conducted to better understand the needs and performance requirements of the natural gas transmission industry regarding internal repair. Completed surveys contained the following principal conclusions: (1) Use of internal weld repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling (HDD) when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) Pipe diameter sizes range from 50.8 mm (2 in.) through 1,219.2 mm (48 in.). The most common size range for 80% to 90% of operators surveyed is 508 mm to 762 mm (20 in. to 30 in.), with 95% using 558.8 mm (22 in.) pipe. An evaluation of potential repair methods clearly indicates that the project should continue to focus on the development of a repair process involving the use of GMAW welding and on the development of a repair process involving the use of fiber-reinforced composite liners.

Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; Nancy Porter; Mike Sullivan; Chris Neary

2004-04-12T23:59:59.000Z

476

Internal absorber solar collector  

DOE Patents [OSTI]

Thin solar collecting panels are described made from arrays of small rod collectors consisting of a refracting dielectric rod lens with an absorber imbedded within it and a reflecting mirror coated on the back side of the dielectric rod. Non-tracking collector panels on vertical walls or roof tops receive approximately 90% of solar radiation within an acceptance zone 60.degree. in elevation angle by 120.degree. or more in the azimuth sectors with a collector concentration ratio of approximately 3.0. Miniaturized construction of the circular dielectric rods with internal absorbers reduces the weight per area of glass, plastic and metal used in the collector panels. No external parts or insulation are needed as heat losses are low due to partial vacuum or low conductivity gas surrounding heated portions of the collector. The miniature internal absorbers are generally made of solid copper with black selective surface and the collected solar heat is extracted at the collector ends by thermal conductivity along the absorber rods. Heat is removed from end fittings by use of liquid circulants. Several alternate constructions are provided for simplifying collector panel fabrication and for preventing the thermal expansion and contraction of the heated absorber or circulant tubes from damaging vacuum seals. In a modified version of the internal absorber collector, oil with temperature dependent viscosity is pumped through a segmented absorber which is now composed of closely spaced insulated metal tubes. In this way the circulant is automatically diverted through heated portions of the absorber giving higher collector concentration ratios than theoretically possible for an unsegmented absorber.

Sletten, Carlyle J. (106 Nagog Hill Rd., Acton, MA 01720); Herskovitz, Sheldon B. (88 Hammond St., Acton, MA 01720); Holt, F. S. (46 Emerson Rd., Winchester, MA 01890); Sletten, E. J. (Chestnut Hill Rd. R.F.D. Rte. #4, Amherst, NH 03031)

1981-01-01T23:59:59.000Z

477

International petroleum statistics report  

SciTech Connect (OSTI)

This monthly publication provides international oil data for January 1998. The report presents data on oil production, demand, imports, and stocks in four sections. Section 1 containes time series data on world oil production, and on oil demand and stocks in the Organization for Economic Cooperation and Development (OECD). Section 2 presents an oil supply/demand balance for the world. This balance is presented in quarterly intervals for the most recent two years. section 3 presents data on oil imports by OECD countries. Section 4 containes annual time series data on world oil production and oil stocks, demand, and trade in OECD countries.

NONE

1998-01-01T23:59:59.000Z

478

International energy annual, 1993  

SciTech Connect (OSTI)

This document presents an overview of key international energy trends for production, consumption, imports, and exports of primary energy commodities in over 200 countries, dependencies, and areas of special sovereignty. Also included are population and gross domestic product data, as well as prices for crude oil and petroleum products in selected countries. Renewable energy includes hydroelectric, geothermal, solar and wind electric power and alcohol for fuel. The data were largely derived from published sources and reports from US Embassy personnel in foreign posts. EIA also used data from reputable secondary sources, industry reports, etc.

NONE

1995-05-08T23:59:59.000Z

479

International energy annual 1995  

SciTech Connect (OSTI)

The International Energy Annual presents information and trends on world energy production and consumption for petroleum, natural gas, coal, and electricity. Production and consumption data are reported in standard units as well as British thermal units (Btu). Trade and reserves are shown for petroleum, natural gas, and coal. Data are provided on crude oil refining capacity and electricity installed capacity by type. Prices are included for selected crude oils and for refined petroleum products in selected countries. Population and Gross Domestic Product data are also provided.

NONE

1996-12-01T23:59:59.000Z

480

International Energy Outlook 2014  

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 JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickrinformation for and NovelFEG-SEMInterlibrary Loan InternalState

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


481

Hydro (International, 1944)  

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 ProposedUsingFun withconfinement plasmasSandy-Nor'easter SituationHybridVehiclesInternational

482

International Energy Statistics - EIA  

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 Jun Jul(Summary)morphinanInformation Desert Southwest Region service area.Portaldefault SignSpecimenInternational

483

Fermilab International Folkdancing  

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 JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4:Epitaxial ThinFORFALL NEWSFemtosecondSystems andInternational

484

NREL: International Activities - Webmaster  

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 the Contributions and Achievements ofLiz TorresSolectriaProjectsInternal

485

Metered Mail Form International Mail Only  

E-Print Network [OSTI]

Metered Mail Form International Mail Only Charge to Department USPS First Class Mail International International Metered Mail Form and must be kept separate from all other domestic mail. · International mail

Palmeri, Thomas

486

Plasmatron Fuel Reformer Development and Internal Combustion...  

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

Plasmatron Fuel Reformer Development and Internal Combustion Engine Vehicle Applications Plasmatron Fuel Reformer Development and Internal Combustion Engine Vehicle Applications...

487

International Hydrogen Infrastructure Challenges Workshop Summary...  

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

International Hydrogen Infrastructure Challenges Workshop Summary - NOW, NEDO, and DOE International Hydrogen Infrastructure Challenges Workshop Summary - NOW, NEDO, and DOE...

488

Upcoming Webinar December 16: International Hydrogen Infrastructure...  

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

Upcoming Webinar December 16: International Hydrogen Infrastructure Challenges NOW, DOE, and NEDO Upcoming Webinar December 16: International Hydrogen Infrastructure Challenges...

489

AVTA: 2010 Electric Vehicles International Neighborhood Electric...  

Energy Savers [EERE]

10 Electric Vehicles International Neighborhood Electric Vehicle Testing Results AVTA: 2010 Electric Vehicles International Neighborhood Electric Vehicle Testing Results The...

490

Cuttings Analysis At International Geothermal Area, Philippines...  

Open Energy Info (EERE)

Cuttings Analysis At International Geothermal Area, Philippines (Laney, 2005) Exploration Activity Details Location International Geothermal Area Philippines Exploration Technique...

491

"In-Gel" Trypsin Digestion Protocol for Proteins in SDS-PAGE Gel Slices ABRF Internal Protein Sequence Research Committee (11/97)  

E-Print Network [OSTI]

98 "In-Gel" Trypsin Digestion Protocol for Proteins in SDS-PAGE Gel Slices ABRF Internal Protein Sequence Research Committee (11/97) Samples to be digested in the gel are run in as few lanes as possible and alkylated prior to electrophoresis. Note that an alternate buffer system is also provided for LysC digestion

Aris, John P.

492

International petroleum statistics report  

SciTech Connect (OSTI)

The International Petroleum Statistics Report presents data on international oil production, demand, imports, exports, and stocks. The report has four sections. Section 1 contains time series data on world oil production, and on oil demand and stocks in the Organization for Economic Cooperation and Development (OECD). This section contains annual data beginning in 1985, and monthly data for the most recent two years. Section 2 presents an oil supply/demand balance for the world. This balance is presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. This section contains annual data for the most recent year, quarterly data for the most recent two quarters, and monthly data for the most recent twelve months. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade in OECD countries. World oil production and OECD demand data are for the years 1970 through 1994; OECD stocks from 1973 through 1994; and OECD trade from 1984 through 1994.

NONE

1995-11-01T23:59:59.000Z

493

International petroleum statistics report  

SciTech Connect (OSTI)

The International Petroleum Statistics Report presents data on international oil production, demand, imports, exports, and stocks. The report has four sections. Section 1 contains time series data on world oil production, and on oil demand and stocks in the Organization for Economic Cooperation and Development (OECD). This section contains annual data beginning in 1985, and monthly data for the most recent two years. Section 2 presents an oil supply/demand balance for the world. This balance is presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. This section contains annual data for the most recent year, quarterly data for the most recent two quarters, and monthly data for the most recent twelve months. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade in OECD countries. World oil production and OECD demand data are for the years 1970 through 1995; OECD stocks from 1973 through 1995; and OECD trade from 1084 through 1994.

NONE

1996-05-01T23:59:59.000Z

494

International petroleum statistics report  

SciTech Connect (OSTI)

The International Petroleum Statistics Report presents data on international oil production, demand, imports, and stocks. The report has four sections. Section 1 contains time series data on world oil production, and on oil demand and stocks in the Organization for Economic Cooperation and Development (OECD). This section contains annual data beginning in 1985, and monthly data for the most recent two years. Section 2 presents an oil supply/demand balance for the world. This balance is presented in quarterly intervals for the most recent two years. Section 3 presents data on oil imports by OECD countries. This section contains annual data for the most recent year, quarterly data for the most recent two quarters, and monthly data for the most recent twelve months. Section 4 presents annual time series data on world oil production and oil stocks, demand, and trade in OECD countries. Word oil production and OECD demand data are for the years 1970 through 1995; OECD stocks from 1973 through 1995; and OECD trade from 1985 through 1995.

NONE

1996-10-01T23:59:59.000Z

495

International energy outlook 1998  

SciTech Connect (OSTI)

The International Energy Outlook 1998 (IEO98) presents an assessment by the Energy Information Administration (EIA) of the outlook for international energy markets through 2020. Projections in IEO98 are displaced according to six basic country groupings. The industrialized region includes projections for four individual countries -- the United States, Canada, Mexico, and Japan -- along with the subgroups Western Europe and Australasia (defined as Australia, New Zealand, and the US Territories). The developing countries are represented by four separate regional subgroups: developing Asia, Africa, Middle East, and Central and South America. China and India are represented in developing Asia. New to this year`s report, country-level projections are provided for Brazil -- which is represented in Central and South America. Eastern Europe and the former Soviet Union (EE/FSU) are considered as a separate country grouping. The report begins with a review of world trends in energy demand. Regional consumption projections for oil, natural gas, coal, nuclear power, and renewable energy (hydroelectricity, geothermal, wind, solar, and other renewables) are presented in five fuel chapters, with a review of the current status of each fuel on a worldwide basis. Summary tables of the IEO98 projections for world energy consumption, carbon emissions, oil production, and nuclear power generating capacity are provided in Appendix A. 88 figs., 77 tabs.

NONE

1998-04-01T23:59:59.000Z

496

International Clean Energy Coalition  

SciTech Connect (OSTI)

In 2003, the National Association of Regulatory Utility Commissioners (NARUC) and National Energy Technology Laboratories (NETL) collaboratively established the International Clean Energy Coalition (ICEC). The coalition consisting of energy policy-makers, technologists, and financial institutions was designed to assist developing countries in forming and supporting local approaches to greenhouse gas mitigation within the energy sector. ICEC's work focused on capacity building and clean energy deployment in countries that rely heavily on fossil-based electric generation. Under ICEC, the coalition formed a steering committee consisting of NARUC members and held a series of meetings to develop and manage the workplan and define successful outcomes for the projects. ICEC identified India as a target country for their work and completed a country assessment that helped ICEC build a framework for discussion with Indian energy decisionmakers including two follow-on in-country workshops. As of the conclusion of the project in 2010, ICEC had also conducted outreach activities conducted during United Nations Framework Convention on Climate Change (UNFCCC) Ninth Conference of Parties (COP 9) and COP 10. The broad goal of this project was to develop a coalition of decision-makers, technologists, and financial institutions to assist developing countries in implementing affordable, effective and resource appropriate technology and policy strategies to mitigate greenhouse gas emissions. Project goals were met through international forums, a country assessment, and in-country workshops. This project focused on countries that rely heavily on fossil-based electric generation.

Erin Skootsky; Matt Gardner; Bevan Flansburgh

2010-09-28T23:59:59.000Z

497

Understanding Lustre Internals  

SciTech Connect (OSTI)

Lustre was initiated and funded, almost a decade ago, by the U.S. Department of Energy (DoE) Office of Science and National Nuclear Security Administration laboratories to address the need for an open source, highly-scalable, high-performance parallel filesystem on by then present and future supercomputing platforms. Throughout the last decade, it was deployed over numerous medium-to-large-scale supercomputing platforms and clusters, and it performed and met the expectations of the Lustre user community. As it stands at the time of writing this document, according to the Top500 list, 15 of the top 30 supercomputers in the world use Lustre filesystem. This report aims to present a streamlined overview on how Lustre works internally at reasonable details including relevant data structures, APIs, protocols and algorithms involved for Lustre version 1.6 source code base. More importantly, it tries to explain how various components interconnect with each other and function as a system. Portions of this report are based on discussions with Oak Ridge National Laboratory Lustre Center of Excellence team members and portions of it are based on our own understanding of how the code works. We, as the authors team bare all responsibilities for all errors and omissions in this document. We can only hope it helps current and future Lustre users and Lustre code developers as much as it helped us understanding the Lustre source code and its internal workings.

Wang, Feiyi [ORNL; Oral, H Sarp [ORNL; Shipman, Galen M [ORNL; Drokin, Oleg [ORNL; Wang, Di [ORNL; Huang, He [ORNL

2009-04-01T23:59:59.000Z

498

INTERNAL REPAIR OF PIPELINES  

SciTech Connect (OSTI)

The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is only marginally effective at restoring the pressure containing capabilities of pipelines. Failure pressures for larger diameter pipe repaired with a semi-circular patch of carbon fiber-reinforced composite lines were also marginally greater than that of a pipe section with un-repaired simulated damage without a liner. These results indicate that fiber reinforced composite liners have the potential to increase the burst pressure of pipe sections with external damage Carbon fiber based liners are viewed as more promising than glass fiber based liners because of the potential for more closely matching the mechanical properties of steel. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. The first round of optimization and validation activities for carbon-fiber repairs are complete. Development of a comprehensive test plan for this process is recommended for use in the field trial portion of this program.

Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

2004-12-31T23:59:59.000Z

499

INTERNAL REPAIR OF PIPELINES  

SciTech Connect (OSTI)

The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is only marginally effective at restoring the pressure containing capabilities of pipelines. Failure pressures for larger diameter pipe repaired with a semi-circular patch of carbon fiber-reinforced composite lines were also marginally greater than that of a pipe section with un-repaired simulated damage without a liner. These results indicate that fiber reinforced composite liners have the potential to increase the burst pressure of pipe sections with external damage Carbon fiber based liners are viewed as more promising than glass fiber based liners because of the potential for more closely matching the mechanical properties of steel. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. Development of a comprehensive test plan for this process is recommended for use in the field trial portion of this program.

Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

2004-08-17T23:59:59.000Z

500

INTERNAL REPAIR OF PIPELINES  

SciTech Connect (OSTI)

The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is only marginally effective at restoring the pressure containing capabilities of pipelines. Failure pressures for larger diameter pipe repaired with a semi-circular patch of carbon fiber-reinforced composite lines were also marginally greater than that of a pipe section with un-repaired simulated damage without a liner. These results indicate that fiber reinforced composite liners have the potential to increase the burst pressure of pipe sections with external damage Carbon fiber based liners are viewed as more promising than glass fiber based liners because of the potential for more closely matching the mechanical properties of steel. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. In lieu of a field installation on an abandoned pipeline, a preliminary nondestructive testing protocol is being developed to determine the success or failure of the fiber-reinforced liner pipeline repairs. Optimization and validation activities for carbon-fiber repair methods are ongoing.

Bill Bruce; Nancy Porter; George Ritter; Matt Boring; Mark Lozev; Ian Harris; Bill Mohr; Dennis Harwig; Robin Gordon; Chris Neary; Mike Sullivan

2005-07-20T23:59:59.000Z