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Sample records for agn notes internal

  1. AGN Taxonomy and Unification Historical notes

    E-Print Network [OSTI]

    Aretxaga, Itziar

    Lecture 1 AGN Taxonomy and Unification · Historical notes · Multifrequency detection of nuclear activity · Classification of AGN - taxonomy · Unification · Evidence for obscuring tori in AGN Itziar Aretxaga (INAOE) @El Escorial, Dec 2007 #12;AGN taxonomy "Active" is used to refer to energetic processes

  2. Internal Note #182 Computational Logic, Inc.

    E-Print Network [OSTI]

    Boyer, Robert Stephen

    to the arguments. The basic functions defined in this library, which are defined in terms of natural numberInternal Note #182 Computational Logic, Inc. March 14, 1990 AN INTEGER LIBRARY FOR NQTHM 1 Matt@cli.com This note contains a brief summary of an integer library that has been created for nqthm. This discussion

  3. Internal Note #182 Computational Logic, Inc.

    E-Print Network [OSTI]

    Boyer, Robert Stephen

    to the arguments. The basic functions defined in this library, which are defined in terms of natural numberInternal Note #182 Computational Logic, Inc. March 14, 1990 AN INTEGER LIBRARY FOR NQTHM 1Matt@cli.com This note contains a brief summary of an integer library that has been created for nqthm. This discussion

  4. Notes

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

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  5. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications64NewsroomNontoxic quantumNot AllNotes Notes Live

  6. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications64NewsroomNontoxic quantumNot AllNotes Notes

  7. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications64NewsroomNontoxic quantumNot All NanodiskNotes

  8. Infrared Surveys for AGN

    E-Print Network [OSTI]

    Smith, H E

    2002-01-01

    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.

  9. Infrared Surveys for AGN

    E-Print Network [OSTI]

    Harding E. Smith

    2002-03-06

    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.

  10. AGNs and galaxy interactions

    E-Print Network [OSTI]

    M. Sol Alonso; Diego G. Lambas; Patricia Tissera; Georgina Coldwell

    2007-01-08

    We perform a statistical analysis of AGN host characteristics and nuclear activity for AGNs in pairs and without companions. Our study concerns a sample of AGNs derived from the SDSS-DR4 data by Kauffmann et al (2003) and pair galaxies obtained from the same data set by Alonso et al. (2006). An eye-ball classification of images of 1607 close pairs ($r_p<25$ kpc $h^{-1}$, $\\Delta V<350$ km $s^{-1}$) according to the evidence of interaction through distorted morphologies and tidal features provides us with a more confident assessment of galaxy interactions from this sample. We notice that, at a given luminosity or stellar mass content, the fraction of AGNs is larger for pair galaxies exhibiting evidence for strong interaction and tidal features which also show sings of strong star formation activity. Nevertheless, this process accounts only for a $\\sim 10%$ increase of the fraction of AGNs. As in previous works, we find AGN hosts to be redder and with a larger concentration morphological index than non-AGN galaxies. This effect does not depend whether AGN hosts are in pairs or in isolation. The OIII luminosity of AGNs with strong interaction features is found to be significantly larger than that of other AGNs, either in pairs or in isolation. Estimations of the accretion rate, $L[OIII]/M_{BH}$, show that AGNs in merging pairs are actively feeding their black holes, regardless of their stellar masses. We also find that the luminosity of the companion galaxy seems to be a key parameter in the determination of the black hole activity. At a given host luminosity, both the OIII luminosity and the $L[OIII]/M_{BH}$ are significantly larger in AGNs with a bright companion ($M_r < -20$) than otherwise.

  11. The central kiloparsec of starbursts and AGN: The La Palma connection

    E-Print Network [OSTI]

    J. H. Knapen; J. E. Beckman; I. Shlosman; T. J. Mahoney

    2001-12-01

    We describe selected highlights of the international conference ``The Central Kiloparsec of Starbursts and AGN: The La Palma Connection'', held in May 2001 in Los Cancajos on the Spanish island of La Palma.

  12. The First INTEGRAL AGN Catalog

    E-Print Network [OSTI]

    V. Beckmann; N. Gehrels; C. R. Shrader; S. Soldi

    2005-10-18

    We present the first INTEGRAL AGN catalog, based on observations performed from launch of the mission in October 2002 until January 2004. The catalog includes 42 AGN, of which 10 are Seyfert 1, 17 are Seyfert 2, and 9 are intermediate Seyfert 1.5. The fraction of blazars is rather small with 5 detected objects, and only one galaxy cluster and no star-burst galaxies have been detected so far. A complete subset consists of 32 AGN with a significance limit of 7 sigma in the INTEGRAL/ISGRI 20-40 keV data. Although the sample is not flux limited, the distribution of sources shows a ratio of obscured to unobscured AGN of 1.5 - 2.0, consistent with luminosity dependent unified models for AGN. Only four Compton-thick AGN are found in the sample. Based on the INTEGRAL data presented here, the Seyfert 2 spectra are slightly harder (Gamma = 1.95 +- 0.01) than Seyfert 1.5 (Gamma = 2.10 +- 0.02) and Seyfert 1 (Gamma = 2.11 +- 0.05).

  13. Extinction curves in AGN

    E-Print Network [OSTI]

    B. Czerny

    2006-12-16

    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.

  14. Understanding Star Formation and AGN Activity at z~2-3

    E-Print Network [OSTI]

    Hainline, Kevin Nicholas

    2012-01-01

    UV-Selected AGN Photometry . . . . . . . . . . . . . . .AGN Photometry . . . . . . . . . . . . . . . . . . . . 152Correcting the Photometry for the Presence of Strong Emis-

  15. X-ray obscuration in local Universe AGN

    E-Print Network [OSTI]

    Matteo Guainazzi

    2006-10-31

    I review the constraints that X-ray observations impose on the physical properties and the geometrical distribution of cold absorbing gas in nearby obscured Active Galactic Nuclei (AGN), as well as their implications for AGN structure models.

  16. Giant AGN Flares and Cosmic Ray Bursts

    E-Print Network [OSTI]

    Glennys R. Farrar; Andrei Gruzinov

    2008-09-15

    We predict a new class of very intense, short-duration AGN flares capable of accelerating the highest energy cosmic rays, resulting from the tidal disruption of a star or from a disk instability. The rate and power of these flares readily explains the observed flux and density statistics of UHECRs. The photon bursts produced by the predicted AGN flares are discussed; they may soon be detectable. Observations are shown to exclude that continuous jets of powerful Active Galactic Nuclei are the sole source of ultrahigh energy cosmic rays; the stringent requirements for Gamma Ray Bursts to be the source are delineated.

  17. Deficiency of Broad Line AGNs in Compact Groups of Galaxies

    E-Print Network [OSTI]

    M. A. Martinez; A. del Olmo; R. Coziol; P. Focardi

    2008-03-25

    Based on a new survey of AGN activity in Compact Groups of Galaxies, we report a remarkable deficiency of Broad Line AGNs as compared to Narrow Line AGNs. The cause of such deficiency could be related to the average low luminosity of AGNs in CGs: $10^{39}$ erg s$^{-1}$. This result may imply lower accretion rates in CG AGNs, making Broad Line Regions (BLR) undetectable, or may indicate a genuine absence of BLRs. Both phenomena are consistent with gas stripping through tidal interaction and dry mergers.

  18. Blue Note

    ScienceCinema (OSTI)

    Murray Gibson

    2010-01-08

    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.

  19. Blue Note

    SciTech Connect (OSTI)

    Murray Gibson

    2007-04-27

    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.

  20. The SWIFT AGN and Cluster Survey I: Number Counts of AGN and Galaxy Clusters

    E-Print Network [OSTI]

    Dai, Xinyu; Kochanek, Christopher S; Nugent, Jenna M; Bregman, Joel N

    2015-01-01

    The Swift AGN and Cluster Survey (SACS) uses 125 deg^2 of Swift XRT serendipitous fields with variable depths surrounding gamma-ray bursts to provide a medium depth (4e-15 erg/s/cm^2) and area survey filling the gap between deep, narrow Chandra/XMM-Newton surveys and wide, shallow ROSAT surveys. Here we present a catalog of 22,563 point sources and 442 extended sources and examine the number counts of the AGN and galaxy cluster populations. SACS provides excellent constraints on the AGN number counts at the bright end with negligible uncertainties due to cosmic variance, and these constraints are consistent with previous measurements. We use Wise mid-infrared (MIR) colors to classify the sources. For AGN we can roughly separate the point sources into MIR-red and MIR-blue AGN, finding roughly equal numbers of each type in the soft X-ray band (0.5-2 keV), but fewer MIR-blue sources in the hard X-ray band (2-8 keV). The cluster number counts, with 5% uncertainties from cosmic variance, are also consistent with p...

  1. Testing thermal reprocessing in AGN accretion discs

    E-Print Network [OSTI]

    E. M. Cackett; K. Horne; H. Winkler

    2007-06-11

    The thermal reprocessing hypothesis in AGN, where EUV/X-ray photons are reprocessed by the accretion disc into optical/UV photons, predicts wavelength-dependent time delays between the optical continuum at different wavelengths. Recent photometric monitoring by Sergeev et al. has shown that the time-delay is observed in 14 AGN, and generally seen to increase with increasing wavelength, as predicted in the reprocessing scenario. We fit the observed time delays and optical spectral energy distribution using a disc reprocessing model. The model delivers estimates for the nuclear reddening, the product of black hole mass times accretion rate, and the distance to each object. However, the distances at face value give H_0 = 44 +/- 5 km/s/Mpc - a factor of 1.6 smaller than generally accepted. We discuss the implications of this on the reprocessing model.

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

    E-Print Network [OSTI]

    Cappi, M; Giustini, M

    2013-01-01

    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.

  3. References R-3 Note: In this report we refer to a number of documents (e.g., plans, reports) that are intended for internal

    E-Print Network [OSTI]

    Pennycook, Steve

    References #12;#12;References R-3 References Note: In this report we refer to a number of documents function as a means of communication between governmental agencies and the tenant companies on the Oak, Appendix B: WAG 1 Groundwater, Surface Water, and Sediment. DOE/OR-1043/V4&D1. U.S. Department of Energy

  4. Energy Transport in Radioloud AGN Daniel Evans (Harvard), Julia Lee (Harvard), Martin Hardcastle (U. Herts), Ralph

    E-Print Network [OSTI]

    Evans, Dan

    Energy Transport in Radioloud AGN Daniel Evans (Harvard), Julia Lee (Harvard), Martin Hardcastle (U. Bristol), Judith Croston (U. Herts) #12;Energy Transport in Radioloud AGN Overview · Introduction to AGNC 321 #12;Energy Transport in Radioloud AGN #12;Energy Transport in Radioloud AGN What are Active

  5. Radio faint AGN: a tale of two populations

    E-Print Network [OSTI]

    Padovani, P; Kellermann, K I; Miller, N; Mainieri, V; Tozzi, P

    2015-01-01

    We study the Extended Chandra Deep Field South (E-CDFS) Very Large Array sample, which reaches a flux density limit at 1.4 GHz of 32.5 microJy at the field centre and redshift ~ 4, and covers ~ 0.3 deg^2. Number counts are presented for the whole sample while the evolutionary properties and luminosity functions are derived for active galactic nuclei (AGN). The faint radio sky contains two totally distinct AGN populations, characterised by very different evolutions, luminosity functions, and Eddington ratios: radio-quiet (RQ)/radiative-mode, and radio-loud/jet-mode AGN. The radio power of RQ AGN evolves ~ (1+z)^2.5, similarly to star-forming galaxies, while the number density of radio-loud ones has a peak at ~ 0.5 and then declines at higher redshifts. The number density of radio-selected RQ AGN is consistent with that of X-ray selected AGN, which shows that we are sampling the same population. The unbiased fraction of radiative-mode RL AGN, derived from our own and previously published data, is a strong funct...

  6. Unveiling the distribution of absorption in the AGN population

    E-Print Network [OSTI]

    Tom Dwelly; Mathew J. Page

    2005-11-15

    We use the very deep XMM-Newton observations in the CDF-S to measure the distribution of absorption in the AGN population. We describe the Monte Carlo method used to unveil the intrinsic properties of the AGN using their multi-band X-ray colours. The measured distribution of AGN in z, L_X and N_H space is compared with the distributions predicted by a number of XLFs and absorption models. In contrast to other studies, we do not find any evidence that the absorption distribution is dependent on redshift or intrinsic luminosity.

  7. Hidden AGNs in Early-Type Galaxies

    E-Print Network [OSTI]

    Paggi, A; Civano, F; Pellegrini, S; Elvis, M; Kim, D -W

    2015-01-01

    We present a stacking analysis of the complete sample of Early Type Galaxies (ETGs) in the \\textit{Chandra} COSMOS (C-COSMOS) survey, to explore the nature of the X-ray luminosityin the redshift and stellar luminosity ranges \\(0gas}\\propto L_K^{4.5}\\) for hot gaseous halos emission in ETGs, and (2) evaluate the spectral signature of each stacked bin. We find two regimes where the non-stellar X-ray emission is hard, consistent with AGN emission. First, there is evidence of hard, absorbed X-ray emission in stacked bins including relatively high z (\\(\\sim 1.2\\)) ETGs with average high X-ray luminosity (\\(L_{X-LMXB}\\gtrsim 6\\times{10}^{42}\\mbox{ er...

  8. Radio AGN evolution with low frequency radio surveys 

    E-Print Network [OSTI]

    Ker, Louise Moira

    2013-07-01

    Supermassive black holes are leading candidates for the regulation of galaxy growth and evolution over cosmic time, via ‘feedback’ processes, whereby outflows from the Active Galactic Nuclei (AGN) halt star formation ...

  9. SUPERNOVAE AND AGN DRIVEN GALACTIC OUTFLOWS

    SciTech Connect (OSTI)

    Sharma, Mahavir; Nath, Biman B. E-mail: biman@rri.res.in

    2013-01-20

    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}.

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

    E-Print Network [OSTI]

    Watson, Andrew

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

  11. Mining the CSC to Identify Classes of AGNs R. D'Abrusco et al.

    E-Print Network [OSTI]

    D?Abrusco, Raffaele

    Mining the CSC to Identify Classes of AGNs R. D'Abrusco et al. Harvard-Smithsonian Center peculiar rare classes of AGNs. The final outcome of the CSC mining will be an objective classification

  12. The role of an accretion disk in AGN variability

    E-Print Network [OSTI]

    B. Czerny

    2004-09-10

    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.

  13. X-ray vs. water maser emission in AGN

    E-Print Network [OSTI]

    Castangia, P; Kadler, M; Henkel, C; Greenhill, L; Tueller, J

    2009-01-01

    Correlations between X-ray and water maser emission in AGN have been recently reported. However, the lack of systematic studies affects the confidence level of these results. In the following, we introduce a project aimed at studying all the water maser sources believed to be associated with AGN activity through X-ray data obtained with the XRT and BAT instruments on-board the Swift satellite. Preliminary results of this work indicate a promising rate of XRT detections allowing us to refine follow-up observing strategies focused on investigating the nuclei of individual galaxies and deriving, on statistical basis, the main characteristics of water maser hosts. In addition, a cross-correlation between our sample and the BAT 22-months all-sky survey provides an exceptionally high detection rate at hard X-ray energies when compared to other AGN-related catalogs.

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

    E-Print Network [OSTI]

    Yukio Tomozawa

    2008-02-03

    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.

  15. Serendipitous AGN in the XMM-Newton fields of Markarian 205 and QSO 0130-403

    E-Print Network [OSTI]

    K. L. Page; M. J. L. Turner; J. N. Reeves; P. T. O'Brien; S. Sembay

    2002-10-07

    The X-ray spectra of serendipitously observed AGN in the XMM-Newton fields of Mrk 205 and QSO 0130-403 are analysed. The sample consists of 23 objects, none of which is detected at radio frequencies, with a median X-ray luminosity of ~ 4 x 10^44 erg s^-1 and redshifts ranging from ~0.1 to just over 3. The mean photon index was found to be 1.89 +/- 0.04. In contrast to past ASCA and ROSAT observations of high-redshift radio-loud quasars, we find little evidence for excess intrinsic absorption in these radio-quiet objects, with only three sources requiring a column density in excess of the Galactic value. Comparing the measured spectral indices over the redshift range, we also find there is no X-ray spectral evolution of QSOs with time, up to redshift 3. Within the sample there is no evidence for evolution of the optical to X-ray spectral index, alpha-ox, with redshift, the mean value being -1.66 +/- 0.04. However, upon comparing the values from the Bright Quasar Survey at low redshift (z 4), a slight steepening of alpha-ox is noted for the more distant objects. In most of the sources there is no significant requirement for a soft excess, although a weak thermal component ( 3 keV, QSO rest frame) for the sample as a whole. This is consistent with the presence of a Compton reflection component in these radio-quiet AGN, with the scattering medium (such as an accretion disc or molecular torus) occupying a solid angle of 2 pi steradians to the X-ray source.

  16. International Conference: Humanitarian Logistics: Networks for Africa

    E-Print Network [OSTI]

    Nagurney, Anna

    International Conference: Humanitarian Logistics: Networks for Africa http Agnes Nyaguthie, Oxfam-GB, Pretoria, South Africa The Important Role of Humanitarian Logistics 10 in Humanitarian Logistics: A Southern African Perspective 12:20-12:40 PM Discussion #12;1:00-2:30 PM Lunch 2

  17. The most obscured AGN in the COSMOS field

    E-Print Network [OSTI]

    Lanzuisi, G; Delvecchio, I; Berta, S; Brusa, M; Cappelluti, N; Comastri, A; Gilli, R; Gruppioni, C; Mignoli, M; Pozzi, F; Vietri, G; Vignali, C; Zamorani, G

    2015-01-01

    Highly obscured active galactic nuclei (AGN) are common in nearby galaxies, but are difficult to observe beyond the local Universe, where they are expected to significantly contribute to the black hole accretion rate density. Furthermore, Compton-thick (CT) absorbers (NH>10^24 cm^-2) suppress even the hard X-ray (2-10 keV) AGN nuclear emission, and therefore the column density distribution above 10^24 cm^-2 is largely unknown. We present the identification and multi-wavelength properties of a heavily obscured (NH>~10^25 cm^-2), intrinsically luminous (L(2-10keV)>10^44 erg s^-1) AGN at z=0.353 in the COSMOS field. Several independent indicators, such as the shape of the X-ray spectrum, the decomposition of the spectral energy distribution and X-ray/[NeV] and X-ray/6{\\mu}m luminosity ratios, agree on the fact that the nuclear emission must be suppressed by a 10^25 cm^-2 column density. The host galaxy properties show that this highly obscured AGN is hosted in a massive star-forming galaxy, showing a barred morp...

  18. Deuterium Nucleosynthesis in AGN: Is D Cosmological? D. A. Lubowicha

    E-Print Network [OSTI]

    Millar, Tom

    Deuterium Nucleosynthesis in AGN: Is D Cosmological? D. A. Lubowicha , N. Kunob , H. Robertsc , T or cosmic-ray luminosity > 1042 erg/s. If jet-cloud nucleosynthesis produces significant amounts of D on the temperature and baryonic density during the epoch of nucleosynthesis (first 1000 seconds). Thus any

  19. Kiloparsec-scale outflows are prevalent among luminous AGN: outflows and feedback in the context of the overall AGN population

    E-Print Network [OSTI]

    Harrison, C M; Mullaney, J R; Swinbank, A M

    2014-01-01

    We present integral field unit (IFU) observations covering the [O III]4959,5007 and H-Beta emission lines of sixteen z~(6-16) kpc in all targets and observe signatures of spherical outflows and bi-polar superbubbles. We show that our targets are representative of z 5x10^41 erg/s) type 2 AGN and that ionised outflows are not only common but also in >=70% (3 sigma confidence) of cases, they are extended over kiloparsec scales. Our study demonstrates that galaxy-wide energetic outflows are not confined to the most extreme star-forming galaxies or radio-luminous AGN; however, there may be a higher incidence of the most extreme outflow velocities in quasars hosted in ultra-luminous infrared galaxies. Both star formation and AGN activity appear to be energetically viable to drive the outflows and we find no definitive evidence that favours one process over the other. Although highly uncertain, we derive mass outflow rates (typically ~10x the SFRs), kinetic energies (~0.5-10% of L[AGN]) and momentum rates (typically...

  20. ODP Information Technology and Data Services ODP Technical Note 37

    E-Print Network [OSTI]

    TECHNICAL NOTE 37 2 IAPSO International Association for the Physical Sciences of the Ocean ICP-AES and colorimetry SCE spectral component excluded TAMU Texas A&M University TCD thermal conductivity detector TCON

  1. Exploring Multiwavelength AGN Variability with Swift Archival Data

    E-Print Network [OSTI]

    Gelbord, Jonathan; Grupe, Dirk; Berk, Dan Vanden; Wu, Jian

    2015-01-01

    We are conducting an archival Swift program to measure multiwavelength variability in active galactic nuclei (AGN). This variability information will provide constraints on the geometry, physical conditions and processes of the structures around the central black holes that emit and reprocess the observed flux. Among our goals are: (1) to produce a catalog of type 1 AGN with time-resolved multi-wavelength data; (2) to characterize variability in the optical, UV and X-ay bands as well as changes in spectral slope; (3) to quantify the impact of variability on multi-wavelength properties; and (4) to measure correlated variability between bands. Our initial efforts have revealed a UVOT calibration issue that can cause a few percent of measured UV fluxes to be anomalously low, by up to 30%.

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

    E-Print Network [OSTI]

    D. Grupe; H. -C Thomas

    2002-02-21

    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.

  3. Properties of AGN coronae in the NuSTAR era

    E-Print Network [OSTI]

    Fabian, A C; Kara, E; Parker, M L; Vasudevan, R; Reynolds, C S

    2015-01-01

    The focussing optics of NuSTAR have enabled high signal-to-noise spectra to be obtained from many X-ray bright Active Galactic Nuclei (AGN) and Galactic Black Hole Binaries (BHB). Spectral modelling then allows robust characterization of the spectral index and upper energy cutoff of the coronal power-law continuum, after accounting for reflection and absorption effects. Spectral-timing studies, such as reverberation and broad iron line fitting, of these sources yield coronal sizes, often showing them to be small and in the range of 3 to 10 gravitational radii in size. Our results indicate that coronae are hot and radiatively compact, lying close to the boundary of the region in the compactness - temperature diagram which is forbidden due to runaway pair production. The coincidence suggests that pair production and annihilation are essential ingredients in the coronae of AGN and BHB and that they control the shape of the observed spectra.

  4. Adiabatic expansion and magnetic fields in AGN jets

    E-Print Network [OSTI]

    A. B. Pushkarev; Y. Y. Kovalev; A. P. Lobanov

    2008-12-25

    Results of high-resolution simultaneous multi-frequency 8.1-15.4 GHz VLBA polarimetric observations of relativistic jets in active galactic nuclei (the MOJAVE-2 project) are analyzed. We compare characteristics of VLBI features with jet model predictions and test if adiabatic expansion is a dominating mechanism for the evolution of relativistic shocks in parsec-scale AGN jets. We also discuss magnetic field configuration, both predicted by the model and deduced from electric vector position angle measurements.

  5. MECHANICAL ENGINEERING Curriculum Notes

    E-Print Network [OSTI]

    Mohan, Chilukuri K.

    MECHANICAL ENGINEERING Curriculum Notes 2013-2014 1. Mechanical engineering students must complete of technical electives. 2. Technical electives must be taken within the Mechanical and Aerospace Engineering

  6. SIGGRAPH 2009 Course notes

    E-Print Network [OSTI]

    Gutierrez, Diego

    SIGGRAPH 2009 Scattering Course notes Diego Gutierrez Universidad de Zaragoza Wojciech Jarosz the Lecturers Diego Gutierrez University of Zaragoza http://giga.cps.unizar.es/ diegog Diego Gutierrez

  7. BIOENGINEERING Curriculum Notes

    E-Print Network [OSTI]

    Mohan, Chilukuri K.

    BIOENGINEERING Curriculum Notes 2013-2014 Social Science/Humanities Requirements: Bioengineering Social Science), or Engineering courses not included in the required bioengineering curriculum

  8. Time variability of AGN and heating of cooling flows

    E-Print Network [OSTI]

    Carlo Nipoti; James Binney

    2005-05-03

    There is increasing evidence that AGN mechanical feedback is important in the energetics of cooling flows in galaxies and galaxy clusters. We investigate the implications of the variability of AGN mechanical luminosity L_m on observations of cooling flows and radio galaxies in general. It is natural to assume that l=ln(L_m/L_x) is a Gaussian process. Then L_m will be log-normally distributed at fixed cooling luminosity L_x, and the variance in a measure of L_m will increase with the time-resolution of the measure. We test the consistency of these predictions with existing data. These tests hinge on the power spectrum of l(t). Monitoring of Seyfert galaxies combined with estimates of the duty cycle of quasars imply flicker noise spectra, similar to those of microquasars. We combine a sample of sources in cooling flows that have cavities with the assumption that the average mechanical luminosity of the AGN equals L_x. Given that the mechanical luminosities are characterized by flicker noise, we find that their spectral amplitudes lie between the estimated amplitudes of quasars and the measured values for the radio luminosities of microquasars. The model together with the observation that powerful radio galaxies lie within a narrow range in optical luminosity, predicts the luminosity function of radio galaxies, in agreement with observations. Forthcoming radio surveys will test the prediction that the luminosity function turns over at about the smallest luminosities so far probed. [Abridged

  9. X-ray Spectral Properties of the BAT AGN Sample

    E-Print Network [OSTI]

    L. M. Winter; R. Mushotzky; C. S. Reynolds; J. Tueller

    2008-08-04

    The 9-month Swift Burst Alert Telescope (BAT) catalog provides the first unbiased (log N_H = 0.03) AGN. In this paper, we present the collected X-ray properties (0.3 - 12keV) for the 153 AGN detected. In addition, we examine the X-ray properties for a complete sample of non-beamed sources, above the Galactic plane. Of these, 45% are best fit by simple power law models while 55% require the more complex partial covering model. One of our goals was to determine the fraction of "hidden" AGN, which we define as sources with scattering fractions Marshall et al. 1980). From the log N-log S relationship, we show that we are complete to log S < -11 in the 2-10 keV band. Both the collected X-ray properties of our uniform sample and the log N-log S relationship will now provide valuable input to X-ray background models for z ~ 0. (abridged)

  10. Are AGN the Best Factories for High Energy Particles and Photons?

    E-Print Network [OSTI]

    Suzy Collin

    2008-11-11

    The main properties of AGN are reviewed, focussing on the accretion process and on the question of whether AGN are the best factories of ultra high energy particles and photons. I recall the large differences between the accretion/ejection flows in strong and weak accretors, and I conclude that, since low luminosity AGN and even "dormant" massive black holes in nuclei of galaxies are powering strong confined magnetized jets able to accelerate high energy particles, and are present in a large proportion of galaxies, they might be better potential sources of high energy particles and photons than luminous AGN and powerful radio galaxies.

  11. The importance of jet bending in gamma-ray AGNs—revisited

    SciTech Connect (OSTI)

    Graham, P. J.; Tingay, S. J.

    2014-04-01

    We investigate the hypothesis that ?-ray-quiet active galactic nuclei (AGNs) have a greater tendency for jet bending than ?-ray-loud AGNs, revisiting the analysis of Tingay et al. We perform a statistical analysis using a large sample of 351 radio-loud AGNs along with ?-ray identifications from the Fermi Large Area Telescope (LAT). Our results show no statistically significant differences in jet-bending properties between ?-ray-loud and ?-ray-quiet populations, indicating that jet bending is not a significant factor for ?-ray detection in AGNs.

  12. Notes and Action Items

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications64NewsroomNontoxic quantumNot AllNotes NotesNotes

  13. Notes for Greenbook Process

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications64NewsroomNontoxic quantumNot AllNotesNotes Notes

  14. Discovery of an ultrasoft transient ROSAT AGN: WPVS007

    E-Print Network [OSTI]

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

    1995-06-14

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

  15. International Migration, Sex Ratios, and the Socioeconomic Outcomes of Non-migrant Mexican Women

    E-Print Network [OSTI]

    Raphael, Steven

    2009-01-01

    international migration from Mexico impacts the marital,international migration from Mexico impacts the marital,already been noted, migration from Mexico has increased at a

  16. Frying Doughnuts: What can the reprocessing of X-rays to IR tell us about the AGN environment?

    E-Print Network [OSTI]

    B. McKernan; K. E. S. Ford; N. Chang; C. S. Reynolds

    2008-12-04

    Active galactic nuclei (AGN) produce vast amounts of high energy radiation deep in their central engines. X-rays either escape the AGN or are absorbed and re-emitted mostly as IR. By studying the dispersion in the ratio of observed mid-IR luminosity to observed 2-10keV X-ray luminosity (R_{ir/x}) in AGN we can investigate the reprocessing material (possibly a torus or donut of dust) in the AGN central engine, independent of model assumptions. We studied the ratio of observed mid-IR and 2-10keV X-ray luminosities in a heterogeneous sample of 245 AGN from the literature. We found that when we removed AGN with prominent jets, ~90% of Type I AGN lay within a very tight dispersion in luminosity ratio (1AGN central engine is extremely uniform and models of the physical AGN environment (e.g. cloud cover, turbulent disk, opening angle of absorbing structures such as dusty tori) must span a very narrow range of parameters. We also found that the far-IR(100um) to mid-IR (12um) observed luminosity ratio is an effective descriminator between heavily obscured AGN and relatively unobscured AGN.

  17. Notes for Visualization Requirememnts

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications64NewsroomNontoxic quantumNot AllNotesNotes

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

    E-Print Network [OSTI]

    E. T. Vishniac

    1993-08-12

    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.

  19. Powering AGNs with super-critical black holes

    E-Print Network [OSTI]

    A. Avgoustidis; R. Jimenez; L. Alvarez-Gaume; M. A. Vazquez-Mozo

    2009-05-13

    We propose a novel mechanism for powering the central engines of Active Galactic Nuclei through super-critical (type II) black hole collapse. In this picture, ~$10^3 M_\\odot$ of material collapsing at relativistic speeds can trigger a gravitational shock, which can eject a large percentage of the collapsing matter at relativistic speeds, leaving behind a "light" black hole. In the presence of a poloidal magnetic field, the plasma collimates along two jets, and the associated electron synchrotron radiation can easily account for the observed radio luminosities, sizes and durations of AGN jets. For Lorentz factors of order 100 and magnetic fields of a few hundred $\\mu G$, synchrotron electrons can shine for $10^6$ yrs, producing jets of sizes of order 100 kpc. This mechanism may also be relevant for Gamma Ray Bursts and, in the absence of magnetic field, supernova explosions.

  20. Fossil shell emission in dying radio loud AGNs

    E-Print Network [OSTI]

    Kino, M; Kawakatu, N; Orienti, M; Nagai, H; Wajima, K; Itoh, R

    2015-01-01

    We investigate shell emission associated with dying radio loud AGNs. First, based on our recent work by Ito et al. (2015), we describe the dynamical and spectral evolutions of shells after stopping the jet energy injection. We find that the shell emission overwhelms that of the radio lobes soon after stopping the jet energy injection because fresh electrons are continuously supplied into the shell via the forward shock while the radio lobes rapidly fade out without jet energy injection. We find that such fossil shells can be a new class of target sources for SKA telescope. Next, we apply the model to the nearby radio source 3C84. Then, we find that the fossil shell emission in 3C84 is less luminous in radio band while it is bright in TeV gamma-ray band and it can be detectable by CTA.

  1. Grand Unification of AGN and the Accretion and Spin Paradigms

    E-Print Network [OSTI]

    David L. Meier

    1999-08-26

    While attempts to unify certain classes of AGN using orientation and environmental effects have been successful, it is widely recognized that intrinsic properties of the accreting black hole system also must play a role in determining the appearance of such an object. In addition to mass and accretion rate, the angular momentum (or spin) of the black hole can play a crucial role in determining the power of a relativistic jet that is generated by magnetohydrodynamic acceleration near the hole. In this paper a scenario is presented, based on accretion theory and recent models of MHD jet production, in which the primary (although not only) parameter differentiating between radio loud and quiet objects is the black hole spin, and that determining quasar vs. radio galaxy is the accretion rate. A surprising number of desirable features result from these simple concepts and the accompanying equations. In addition, there are several testable predictions that can determine whether this grand unification scheme has further merit.

  2. ELECTRICAL ENGINEERING Curriculum Notes

    E-Print Network [OSTI]

    Mohan, Chilukuri K.

    ELECTRICAL ENGINEERING Curriculum Notes 2013-2014 1. Electrical Engineering (EE) students must/programs/electrical_engineering) and minors are used to regulate technical electives. A student must complete four technical elective courses in Electrical Engineering or Computer Engineering. At a minimum

  3. CHEMICAL ENGINEERING Curriculum Notes

    E-Print Network [OSTI]

    Mohan, Chilukuri K.

    CHEMICAL ENGINEERING Curriculum Notes 2013-2014 1. Chemical engineering students must complete not included in the required chemical engineering curriculum. All technical electives are subject to approval be in chemical engineering. 2. Chemical engineering students must complete a minimum of 18 credits in the Social

  4. Notes and Publications

    E-Print Network [OSTI]

    $author.value

    2014-09-06

    Sep 6, 2014 ... With Alejandra Alvarado, Arithmetic Progressions on Conic Sections. International Journal of Number Theory, Vol. 9, No. 6 (2013), pgs.

  5. The Dispersion of the MIR { Hard X-ray Correlation in AGN

    E-Print Network [OSTI]

    Gandhi, Poshak

    continuum is due to AGN emission reprocessed by dust in a torus-like geometry. Our results imply thick molecular torus. Associated with this torus are large masses of dust which supposedly reprocess

  6. Modeling optical and UV polarization of AGNs III. From uniform-density to clumpy regions

    E-Print Network [OSTI]

    Marin, F; Gaskell, C M

    2015-01-01

    A growing body of evidence suggests that part of, if not all, scattering regions of active galactic nuclei (AGNs) are clumpy. Hence. in this paper, we run radiative transfer models in the optical/UV for a variety of AGN reprocessing regions with different distributions of clumpy scattering media. We use the latest version of the Monte Carlo code STOKES presented in the first two papers of this series to model AGN reprocessing regions of increasing morphological complexity. We replace previously uniform-density media with up to thousands of constant-density clumps. We couple a continuum source to fragmented equatorial scattering regions, polar outflows, and toroidal, obscuring dust regions and investigate a wide range of geometries. We also consider different levels of fragmentation in each scattering region to evaluate importance of fragmentation for the net polarization of the AGN. We find that, in comparison with uniform-density models, equatorial distributions of gas and dust clouds result in grayer spectr...

  7. Measurement of neutron spectrum in an AGN-201 reactor using a semiconductor neutron spectrometer 

    E-Print Network [OSTI]

    Stephenson, S. E

    1961-01-01

    . EXPERIMENTAL DETERMINATION OF NEUTRON SPECTRA. 12 Caiibration of the Spectrometer Measurement of Neutron Spectrum in an AGN-201 Reactor 14 III. DISCUSSION OF RESULTS IV. CONCLUSIONS . APPENDIX 24 29 32 Appendix I Appendix 2 Pulse Height Data... for Thermal Neutrons. . . Pulse Height Data for Energetic D(D, n)He 3 Neutrons 33 35 Appendix 3. Pulse Height Data for the AGN-201 Reactor Core Appendix 4. Data on Surface-Barrier Diode Lifetime Appendix 5. Surface-Barrier Diode Characteristics . 36...

  8. Experiment 949 Technical Note # 6

    E-Print Network [OSTI]

    with small modification and to operate without air conditioning. In this note we will present outline of our

  9. The INTEGRAL/IBIS AGN catalogue I: X-ray absorption properties versus optical classification

    E-Print Network [OSTI]

    Malizia, A; Bazzano, A; Bird, A J; Masetti, N; Panessa, F; Stephen, J B; Ubertini, P

    2012-01-01

    In this work we present the most comprehensive INTEGRAL AGN sample which lists 272 objects. Here we mainly use this sample to study the absorption properties of active galaxies, to probe new AGN classes and to test the AGN unification scheme. We find that half (48%) of the sample is absorbed while the fraction of Compton thick AGN is small (~7%). In line with our previous analysis, we have however shown that when the bias towards heavily absorbed objects which are lost if weak and at large distance is removed, as it is possible in the local Universe, the above fractions increase to become 80% and 17%. We also find that absorption is a function of source luminosity, which implies some evolution in the obscuration properties of AGN. Few peculiar classes, so far poorly studied in the hard X-ray band, have been detected and studied for the first time such as 5 XBONG, 5 type 2 QSOs and 11 LINERs. In terms of optical classification, our sample contains 57% of type 1 and 43% of type 2 AGN; this subdivision is simila...

  10. Where the active galaxies live: a panchromatic view of radio-AGN in the AKARI-NEP field

    E-Print Network [OSTI]

    Karouzos, Marios; Trichas, Markos

    2013-01-01

    We study the host galaxy properties of radio sources in the AKARI-North Ecliptic Pole (NEP) field, using an ensemble of multi-wavelength datasets. We identify both radio-loud and radio-quiet AGN and study their host galaxy properties by means of SED fitting. We investigate the relative importance of nuclear and star-formation activity in radio-AGN and assess the role of radio-AGN as efficient quenchers of star-formation in their host galaxies.

  11. Public digital note-taking in lectures

    E-Print Network [OSTI]

    Malani, Roshni

    2009-01-01

    Blogs, Collaborative SearchNotes, and Integrative Notes. Table 1.1 provides an overview of where each technology

  12. Optical variability properties of high luminosity AGN classes

    E-Print Network [OSTI]

    C. S. Stalin; Gopal-Krishna; Ram Sagar; Paul J. Wiita

    2003-06-19

    We present the results of a comparative study of the intra-night optical variability (INOV) characteristics of radio-loud and radio-quiet quasars, which involves a systematic intra-night optical monitoring of seven sets of high luminosity AGNs covering the redshift range {\\it z} $\\simeq 0.2$ to {\\it z} $\\simeq 2.2$. The sample, matched in the optical luminosity -- redshift (M$_B$ -- z) plane, consists of seven radio-quiet quasars (RQQs), eight radio lobe-dominated quasars (LDQs), six radio core-dominated quasars (CDQs) and five BL Lac objects (BLs). Systematic CCD observations, aided by a careful data analysis procedure, have allowed us to detect INOV with amplitudes as low as 1%. Present observations cover a total of 113 nights (720 hours) with only a single quasar monitored as continuously as possible on a night. Considering cases of only unambiguous detections of INOV we have estimated duty cycles (DCs) of 17%, 12%, 20% and 72% respectively for RQQs, LDQs, CDQs, and BLs. The low amplitude and low DC of INOV shown by RQQs compared to BLs can be understood in terms of their having optical synchrotron jets which are modestly misdirected from us. From our fairly extensive dataset, no unambiguous general trend of a correlation between the INOV amplitude and the apparent optical brightness of the quasar is noticed.

  13. Notes and Action Items

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications64NewsroomNontoxic quantumNot AllNotes

  14. INFORMATION NOTE United Nations/Nigeria Workshop on Space Law

    E-Print Network [OSTI]

    Glass, Ian S.

    1 INFORMATION NOTE United Nations/Nigeria Workshop on Space Law "Meeting international responsibilities and addressing domestic needs" Hosted by the Government of Nigeria 21-24 November 2005 Abuja, Nigeria Background Given the growing number of benefits derived from the use of space applications

  15. The Relation between Luminous AGNs and Star Formation in Their Host Galaxies

    E-Print Network [OSTI]

    Xu, Lei; Egami, E; Haines, C P; Pereira, M J; Smith, G P

    2015-01-01

    We study the relation of active galactic nuclei (AGNs) to star formation in their host galaxies. Our sample includes 205 Type-1 and 85 Type-2 AGNs, 162 detected with Herschel, from fields surrounding 30 galaxy clusters in the Local Cluster Substructure Survey (LoCuSS). The sample is identified by optical line widths and ratios after selection to be brighter than 1 mJy at 24 microns. We show that Type-2 AGN [OIII]5007 line fluxes at high z can be contaminated by their host galaxies with typical spectrograph entrance apertures (but our sample is not compromised in this way). We use spectral energy distribution (SED) templates to decompose the galaxy SEDs and estimate star formation rates, AGN luminosities, and host galaxy stellar masses (described in an accompanying paper). The AGNs arise from massive black holes (~ 3 X 10^8 Msun) accreting at ~ 10% of the Eddington rate and residing in galaxies with stellar mass > 3 X 10^{10} Msun; those detected with Herschel have IR luminosity from star formation in the rang...

  16. The Agnes Etherington Art Centre's membership program reaches out to art lovers on campus, in the community, and beyond. Members sustain and advance the Agnes as a leading art museum and social

    E-Print Network [OSTI]

    Fletcher, Robin

    The Agnes Etherington Art Centre's membership program reaches out to art lovers on campus, in the community, and beyond. Members sustain and advance the Agnes as a leading art museum and social hub. Join now to be involved in the work of the gallery, and to connect with artists and art through

  17. Notes on basic algebraic geometry

    E-Print Network [OSTI]

    2008-06-16

    Jun 16, 2008 ... Notes on basic algebraic geometry ...... Having discovered the basic equation ..... back to a rational function on X. Thus we get a nonzero ...

  18. CHANDRA DISCOVERY OF 10 NEW X-RAY JETS ASSOCIATED WITH FR II RADIO CORE-SELECTED AGNs IN THE MOJAVE SAMPLE

    E-Print Network [OSTI]

    Hogan, Brandon S.

    The Chandra X-ray Observatory has proven to be a vital tool for studying high-energy emission processes in jets associated with active galactic nuclei (AGNs). We have compiled a sample of 27 AGNs selected from the radio ...

  19. NOTE / NOTE New observations on urine contents in water-

    E-Print Network [OSTI]

    Vatnick, Itzick

    NOTE / NOTE New observations on urine contents in water- deprived Negev Desert rodents Carmi Korine of the murid subfamilies Gerbillinae and Cricetomyinae from the Namib Desert, when deprived of water, excreted much water. This phenomenon has not been reported in other rodents, and whether it is a trait

  20. Notes2Providers.doc -1-Notes to Retail Providers

    E-Print Network [OSTI]

    providers that purchase electricity from a power pool that submits an Annual Report to the Energy CommissionNotes2Providers.doc -1- Notes to Retail Providers February 2003 Power Source Disclosure an energy mix or fuel mix different than the California Mix, (Net System Power)i . As a retail provider you

  1. NOTE / NOTE Sex ratio variation in gynodioecious species of

    E-Print Network [OSTI]

    Dorken, Marcel

    NOTE / NOTE Sex ratio variation in gynodioecious species of Echium endemic to the Canary Islands Marcel E. Dorken Abstract: Species of Echium from the Canary Islands represent an adaptive radiation fertility of females and hermaphrodites were de- tected. Key words: Canary Islands, Echium, island radiation

  2. NOTE / NOTE Effects of constrained females on offspring sex

    E-Print Network [OSTI]

    King, Bethia H.

    NOTE / NOTE Effects of constrained females on offspring sex ratios of Nasonia vitripennis constrained females affect sex ratio are few. Constrained females are those that can produce only sons (e the probability of a female being constrained and thus affected sex ratio directly. Local mate competition theory

  3. Efficiency of the centrifugally induced curvature drift instability in AGN winds

    E-Print Network [OSTI]

    Z. Osmanov

    2008-05-09

    For studying how the field lines are twisting nearby the light cylinder surface, which provides the free motion of AGN winds through the mentioned area, the investigation of the centrifugally driven curvature drift instability is presented. Studying the dynamics of the relativistic MHD flow close to the light cylinder surface, by applying a single particle approach based on the centrifugal acceleration, the dispersion relation of the instability is derived and analytically solved. Considering the typical values of AGN winds, it is shown that the time scale of the curvature drift instability is much less than the accretion process time scale, indicating that the present instability is very efficient and might strongly influence processes in AGN plasmas.

  4. The infrared medium-deep survey. II. How to trigger radio AGNs? Hints from their environments

    SciTech Connect (OSTI)

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

    2014-12-10

    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 and the Deep eXtragalactic Survey of the VIMOS-SA22 field and radio data at 1.4 GHz from the FIRST survey and a deep Very Large Array survey to study the environments of radio active galactic nuclei (AGNs) over an area of ?25 deg{sup 2} and down to a radio flux limit of 0.1 mJy and a J-band magnitude of 23 mag AB. Radio AGNs are predominantly found in environments similar to those of control galaxies at similar redshift, J-band magnitude, and (M{sub u} – M{sub r} ) rest-frame color. However, a subpopulation of radio AGNs is found in environments up to 100 times denser than their control sources. We thus preclude merging as the dominant triggering mechanism of radio AGNs. By fitting the broadband spectral energy distribution of radio AGNs in the least and most dense environments, we find that those in the least dense environments show higher radio-loudness, higher star formation efficiencies, and higher accretion rates, typical of the so-called high-excitation radio AGNs. These differences tend to disappear at z > 1. We interpret our results in terms of a different triggering mechanism for these sources that is driven by mass loss through winds of young stars created during the observed ongoing star formation.

  5. A tale of two feedbacks: Star formation in the host galaxies of radio AGNs

    SciTech Connect (OSTI)

    Karouzos, Marios; Im, Myungshin; Jeon, Yiseul; Kim, Ji Hoon [CEOU-Astronomy Program, Department of Physics and Astronomy, Seoul National University, Gwanak-gu, Seoul (Korea, Republic of); Trichas, Markos [Airbus Defence and Space, Gunnels Wood Road, Stevenage SG1 2AS (United Kingdom); Goto, Tomo [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen (Denmark); Malkan, Matt [Division of Astronomy and Astrophysics, 3-714 UCLA, CA 90095-1547 (United States); Ruiz, Angel [Inter-University Centre for Astronomy and Astrophysics (IUCAA), Post Bag 4, Ganeshkhind, 411 007 Pune (India); Lee, Hyung Mok; Kim, Seong Jin [Astronomy Program, Department of Physics and Astronomy, Seoul National University, Gwanak-gu, Seoul (Korea, Republic of); Oi, Nagisa; Matsuhara, Hideo; Takagi, Toshinobu; Murata, K.; Wada, Takehiko; Wada, Kensuke [Institute of Space and Astronautical Science, JAXA, Yoshino-dai 3-1-1, Sagamihara, Kanagawa 229-8510 (Japan); Shim, Hyunjin [Department of Earth Science Education, Kyungpook National University, Daegu 702-701 (Korea, Republic of); Hanami, Hitoshi [Physics Section, Faculty of Humanities, Iwate University, Ueda 3 chome, 18-34 Morioka, Morioka, Iwate 020-8550 (Japan); Serjeant, Stephen; White, Glenn J., E-mail: mkarouzos@astro.snu.ac.kr [Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes (United Kingdom); and others

    2014-04-01

    Several lines of argument support the existence of a link between activity at the nuclei of galaxies, in the form of an accreting supermassive black hole, and star formation activity in these galaxies. Radio jets have long been argued to be an ideal mechanism that allows active galactic nuclei (AGNs) to interact with their host galaxies and affect star formation. We use a sample of radio sources in the North Ecliptic Pole (NEP) field to study the nature of this putative link, by means of spectral energy distribution (SED) fitting. We employ the excellent spectral coverage of the AKARI infrared space telescope and the rich ancillary data available in the NEP to build SEDs extending from UV to far-IR wavelengths. We find a significant AGN component in our sample of relatively faint radio sources (AGN component and that of star formation in the host galaxy, independent of the radio luminosity. In contrast, for narrow redshift and AGN luminosity ranges, we find that increasing radio luminosity leads to a decrease in the specific star formation rate. The most radio-loud AGNs are found to lie on the main sequence of star formation for their respective redshifts. For the first time, we potentially see such a two-sided feedback process in the same sample. We discuss the possible suppression of star formation, but not total quenching, in systems with strong radio jets, that supports the maintenance nature of feedback from radio AGN jets.

  6. The Origin of Double-Peaked Narrow Lines in Active Galactic Nuclei I: Very Large Array Detections of Dual AGNs and AGN Outflows

    E-Print Network [OSTI]

    Müller-Sanchez, Francisco; Nevin, Rebecca; Barrows, R Scott; Cooper, Michael C; Greene, Jenny E

    2015-01-01

    We have examined a subset of 18 active galactic nuclei (AGNs) drawn from a sample of 81 galaxies that possess double-peaked narrow optical emission line spectra in the Sloan Digital Sky Survey, have two optical AGN emission components separated by >0.2", and are detected in the Faint Images of the Radio Sky at Twenty-centimeters survey. Without follow-up observations, the sources of the double-peaked narrow emission lines are uncertain, and may be produced by kpc-scale separation dual active supermassive black holes, AGN outflows, or disk rotation. In this work, we propose a new methodology to characterize double-peaked narrow emission-line galaxies based on optical long-slit spectroscopy and high resolution multi-band Very Large Array observations. The nature of the radio emission in the sample galaxies is varied. Of the 18 galaxies, we detect two compact flat-spectrum radio cores with projected spatial separations on the sky between 0.6-1.6 kpc in three galaxies: J1023+3243, J1158+3231, and J1623+0808. The ...

  7. International Affairs International Services

    E-Print Network [OSTI]

    Meyers, Steven D.

    Chemistry Business Administration Electrical EngineeringI International Affairs International Services Fall 0.2% Denmark 4 0.3% Dominica 2 0.1% Dominican Republic 3 0.2% Ecuador 10 0.7% Egypt 10 0.7% El

  8. International Policy International Development

    E-Print Network [OSTI]

    Watson, Andrew

    Research Strategy 2006-2009 International Policy Energy Adaptation International Development Coasts Change Research. Our strategy builds upon our previous work on integrated assessment, energy, adaptation of time. In this spirit, the Centre reconfirms its vision statement: "The Tyndall Centre is the UK network

  9. A RANDOM MODEL OF PUBLICATION ACTIVITY AGNES BACKHAUSZ AND TAMAS F. MORI

    E-Print Network [OSTI]

    Móri, Tamás F.

    graphs, martingales, renewal equation. 1. Introduction In this paper we examine a dynamic model inspiredA RANDOM MODEL OF PUBLICATION ACTIVITY ´AGNES BACKHAUSZ AND TAM´AS F. M´ORI Department models. We prove almost sure conver- gence for the weight distribution and show scale-free asymptotic

  10. Delving into X-ray obscuration of type 2 AGN, near and far

    SciTech Connect (OSTI)

    LaMassa, Stephanie M.; Meg Urry, C.; Yaqoob, Tahir; Ptak, Andrew F.; Gandhi, Poshak

    2014-05-20

    Using self-consistent, physically motivated models, we investigate the X-ray obscuration in 19 Type 2 [O III] 5007 Å selected active galactic nuclei (AGNs), 9 of which are local Seyfert 2 galaxies and 10 of which are Type 2 quasar candidates. We derive reliable line-of-sight and global column densities for these objects, which is the first time this has been reported for an AGN sample; four AGNs have significantly different global and line-of-sight column densities. Five sources are heavily obscured to Compton-thick. We comment on interesting sources revealed by our spectral modeling, including a candidate 'naked' Sy2. After correcting for absorption, we find that the ratio of the rest-frame, 2-10 keV luminosity (L{sub 2-10} {sub keV,} {sub in}) to L{sub [O} {sub III]} is 1.54 ± 0.49 dex which is essentially identical to the mean Type 1 AGN value. The Fe K? luminosity is significantly correlated with L{sub [O} {sub III]} but with substantial scatter. Finally, we do not find a trend between L {sub 2-10keV,} {sub in} and global or line-of-sight column density, between column density and redshift, between column density and scattering fraction, or between scattering fraction and redshift.

  11. Stellar and Quasar Feedback in Concert: Effects on AGN Accretion, Obscuration, and Outflows

    E-Print Network [OSTI]

    Hopkins, Philip F; Faucher-Giguere, Claude-Andre; Quataert, Eliot; Murray, Norman

    2015-01-01

    We use hydrodynamic simulations to study the interaction of realistic active galactic nucleus (AGN) feedback mechanisms (accretion-disk winds & Compton heating) with a multi-phase interstellar medium (ISM). Our ISM model includes radiative cooling and explicit stellar feedback from multiple processes. We simulate radii ~0.1-100 pc around an isolated (non-merging) black hole. These are the scales where the accretion rate onto the black hole is determined and where AGN-powered winds and radiation couple to the ISM. Our primary results include: (1) The black hole accretion rate on these scales is determined by exchange of angular momentum between gas and stars in gravitational instabilities. This produces accretion rates of ~0.03-1 Msun/yr, sufficient to power a luminous AGN. (2) The gas disk in the galactic nucleus undergoes an initial burst of star formation followed by several Myrs where stellar feedback suppresses the star formation rate per dynamical time. (3) AGN winds injected at small radii with mome...

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

    E-Print Network [OSTI]

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

    2010-01-01

    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...

  13. Quantifying AGN-Driven Metal-Enhanced Outflows in Chemodynamical Simulations

    E-Print Network [OSTI]

    Taylor, Philip

    2015-01-01

    We show the effects of AGN-driven outflows on the ejection of heavy elements using our cosmological simulations, where super-massive black holes originate from the first stars. In the most massive galaxy, we have identified two strong outflows unambiguously driven by AGN feedback. These outflows have a speed greater than $\\sim 8000$ km\\,s$^{-1}$ near the AGN, and travel out to a half Mpc with $\\sim 3000$ km\\,s$^{-1}$. These outflows remove the remaining gas ($\\sim 3$ per cent of baryons) and significant amounts of metals ($\\sim 2$ per cent of total produced metals) from the host galaxy, chemically enriching the circumgalactic medium (CGM) and the intergalactic medium (IGM). 17.6 per cent of metals from this galaxy, and 18.4 per cent of total produced metals in the simulation, end up in the CGM and IGM, respectively. The metallicities of the CGM and IGM are higher with AGN feedback, while the mass--metallicity relation of galaxies is not affected very much. We also find `selective' mass-loss where iron is more...

  14. The Central kpc of Starbursts and AGN ASP Conference Series, Vol. xxx, 2001

    E-Print Network [OSTI]

    unit of star formation in starbursts. The most luminous galaxies whose energy production is dominated to a few pc. These structures are identified as very luminous star clusters, which may be the small­ est dominate the energy release. There is clear evidence for a close associ­ ation of the starburst and AGN

  15. The H.E.S.S. AGN Observation Program Wystan Benbow

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    luminous Small angle => FSRQ Blazars: BL Lacs + FSRQ Low-energy (EGRET) -ray AGN : 66 definite + 27 Strong background rejection (>99%) Low energy threshold: 100 GeV at zenith (150 GeV post-cuts) Remains below 1 TeV up to ~60o >50 / min; Crab-like source at 0o PSF Energy

  16. An Atlas of Warm AGN and Starbursts from the IRAS Deep Fields

    E-Print Network [OSTI]

    William C. Keel; Bryan K. Irby; Alana May; George K. Miley; Daniel Golombek; M. H. K. de Grijp; Jack F. Gallimore

    2005-03-03

    We present 180 AGN candidates based on color selection from the IRAS slow-scan deep observations, with color criteria broadened from the initial Point-Source Catalog samples to include similar objects with redshifts up to z=1 and allowing for two-band detections. Spectroscopic identifications have been obtained for 80 (44%); some additional ones are secure based on radio detections or optical morphology, although yet unobserved spectroscopically. These spectroscopic identifications include 13 Sy 1 galaxies, 17 Sy 2 Seyferts, 29 starbursts, 7 LINER systems, and 13 emission-line galaxies so heavily reddened as to remain of ambiguous classification. The optical magnitudes range from R=12.0-20.5; counts suggest that incompleteness is important fainter than R=15.5. Redshifts extend to z=0.51, with a significant part of the sample at z>0.2. The sample includes slightly more AGN than star-forming systems among those where the spectra contain enough diagnostic feature to make the distinction. The active nuclei include several broad-line objects with strong Fe II emission, and composite objects with the absorption-line signatures of fading starbursts. These AGN with warm far-IR colors have little overlap with the "red AGN" identified with 2MASS; only a single Sy 1 was detected by 2MASS with J-K > 2. Some reliable IRAS detections have either very faint optical counterparts or only absorption-line galaxies, potentially being deeply obscured AGN. The IRAS detections include a newly identified symbiotic star, and several possible examples of the "Vega phenomenon", including dwarfs as cool as type K. Appendices detail these candidate stars, and the optical-identification content of a particularly deep set of high-latitude IRAS scans (probing the limits of optical identification from IRAS data alone).

  17. Lecture notes on surface tension

    E-Print Network [OSTI]

    Lidon Pierre

    2015-10-27

    Lecture notes in french of the lecture on surface tension given in 2015 and 2016 at the preparation to "Agr\\'egation de physique" in the Ecole Normale Sup\\'erieure de Lyon

  18. TECHNICAL NOTE Irina Geiman,1

    E-Print Network [OSTI]

    Lombardi, John R.

    TECHNICAL NOTE Irina Geiman,1 B.S.; Marco Leona,2 Ph.D.; and John R. Lombardi,3 Ph.D. Application helpful. Additionally, dye standards and a single ballpoint ink were developed on a TLC plate following

  19. Technical Note Engineering Soils Maps

    E-Print Network [OSTI]

    Technical Note Engineering Soils Maps PAUL M. SANTI Department of Geology and Geological, Suite 100, Overland Park, KS 66211 Key Terms: Engineering Properties, Soils, Hazards, Mapping INTRODUCTION For many applications, `engineering soils maps' may be preferable to comprehensive engineering

  20. Clustering of moderate luminosity X-ray-selected type 1 and type 2 AGNs at z ? 3

    SciTech Connect (OSTI)

    Allevato, V.; Finoguenov, A. [Department of Physics, University of Helsinki, Gustaf Hällströmin katu 2a, FI-00014 Helsinki (Finland); Civano, F. [Department of Physics and Astronomy, Dartmouth College, 6127 Wilder Laboratory, Hanover, NH 03755 (United States); Cappelluti, N. [University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250 (United States); Shankar, F. [Department of Physics and Astronomy, University of Southampton, Highfield SO17 1BJ (United Kingdom); Miyaji, T. [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Ensenada (Mexico); Hasinger, G. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Gilli, R.; Zamorani, G.; Comastri, A. [INAF-Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna (Italy); Lanzuisi, G. [National Observatory of Athens I. Metaxa and Vas. Pavlou St. GR-15236 Penteli (Greece); Salvato, M. [Max-Planck-Institute für Extraterrestrische Physik, Giessenbachstrasse 1, D-85748 Garching (Germany); Elvis, M. [Harvard Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Silverman, J. [Institute for the Physics and Mathematics of the Universe, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwashi, Chiba 277-8583 (Japan)

    2014-11-20

    We investigate, for the first time at z ? 3, the clustering properties of 189 Type 1 and 157 Type 2 X-ray active galactic nuclei (AGNs) of moderate luminosity ((L {sub bol}) = 10{sup 45.3} erg s{sup –1}), with photometric or spectroscopic redshifts in the range 2.2 < z < 6.8. These samples are based on Chandra and XMM-Newton data in COSMOS. We find that Type 1 and Type 2 COSMOS AGNs at z ? 3 inhabit DMHs with typical mass of log M{sub h} = 12.84{sub ?0.11}{sup +0.10} and 11.73{sub ?0.45}{sup +0.39} h {sup –1} M {sub ?}, respectively. This result requires a drop in the halo masses of Type 1 and 2 COSMOS AGNs at z ? 3 compared to z ? 2 XMM-COSMOS AGNs with similar luminosities. Additionally, we infer that unobscured COSMOS AGNs at z ? 3 reside in 10 times more massive halos compared to obscured COSMOS AGNs, at the 2.6? level. This result extends to z ? 3 the results found in COSMOS at z ? 2, and rules out the picture in which obscuration is purely an orientation effect. A model which assumes that the AGNs activity is triggered by major mergers is quite successful in predicting both the low halo mass of COSMOS AGNs and the typical mass of luminous SDSS quasars at z ? 3, with the latter inhabiting more massive halos respect to moderate luminosity AGNs. Alternatively we can argue, at least for Type 1 COSMOS AGNs, that they are possibly representative of an early phase of fast (i.e., Eddington limited) BH growth induced by cosmic cold flows or disk instabilities. Given the moderate luminosity, these new fast growing BHs have masses of ?10{sup 7-8} M {sub ?} at z ? 3 which might evolve into ?10{sup 8.5-9} M {sub ?} mass BHs at z = 0. Following our clustering measurements, we argue that this fast BH growth at z ? 3 in AGNs with moderate luminosity occurs in DMHs with typical mass of ? 6× 10{sup 12} h {sup –1} M {sub ?}.

  1. The WiFeS S7 AGN survey: Current status and recent results on NGC 6300

    E-Print Network [OSTI]

    Scharwächter, J; Shastri, P; Davies, R; Kewley, L; Hampton, E; Sutherland, R; Kharb, P; Jose, J; Bhatt, H; Ramya, S; Jin, C; Banfield, J; Zaw, I; Juneau, S; James, B; Srivastava, S

    2015-01-01

    The Siding Spring Southern Seyfert Spectroscopic Snapshot Survey (S7) is a targeted survey probing the narrow-line regions (NLRs) of a representative sample of ~140 nearby (zgas excitation and star formation around AGN, with a special focus on the shape of the AGN ionising continuum, the interaction between radio jets and the NLR gas, and the nature of nuclear LINER emission. We provide an overview of the current status of S7-based results and present new results for NGC 6300.

  2. Radio-AGN in the AKARI-NEP field and their role in the evolution of galaxies

    E-Print Network [OSTI]

    Karouzos, Marios; 10.5303/PKAS.2012.27.4.287

    2013-01-01

    Radio-loud active galaxies have been found to exhibit a close connection to galactic mergers and host galaxy star-formation quenching. We present preliminary results of an optical spectroscopic investigation of the AKARI NEP field. We focus on the population of radio-loud AGN and use photometric and spectroscopic information to study both their star-formation and nuclear activity components. Preliminary results show that radio-AGN are associated with early type, massive galaxies with relatively old stellar populations.

  3. The 3D soft X-ray cluster-AGN cross-correlation function in the ROSAT NEP survey

    E-Print Network [OSTI]

    N. Cappelluti; H. Boehringer; P. Schuecker; E. Pierpaoli; C. R. Mullis; I. M. Gioia; J. P. Henry

    2007-04-18

    X-ray surveys facilitate investigations of the environment of AGNs. Deep Chandra observations revealed that the AGNs source surface density rises near clusters of galaxies. The natural extension of these works is the measurement of spatial clustering of AGNs around clusters and the investigation of relative biasing between active galactic nuclei and galaxies near clusters.The major aims of this work are to obtain a measurement of the correlation length of AGNs around clusters and a measure of the averaged clustering properties of a complete sample of AGNs in dense environments. We present the first measurement of the soft X-ray cluster-AGN cross-correlation function in redshift space using the data of the ROSAT-NEP survey. The survey covers 9x9 deg^2 around the North Ecliptic Pole where 442 X-ray sources were detected and almost completely spectroscopically identified. We detected a >3sigma significant clustering signal on scales s<50 h70^-1 Mpc. We performed a classical maximum-likelihood power-law fit to the data and obtained a correlation length s_0=8.7+1.2-0.3 h_70-1 Mpc and a slope gamma=1.7$^+0.2_-0.7 (1sigma errors). This is a strong evidence that AGNs are good tracers of the large scale structure of the Universe. Our data were compared to the results obtained by cross-correlating X-ray clusters and galaxies. We observe, with a large uncertainty, that the bias factor of AGN is similar to that of galaxies.

  4. The soft X-ray Cluster-AGN spatial cross-correlation function in the ROSAT-NEP survey

    E-Print Network [OSTI]

    N. Cappelluti; H. Boehringer; P. Schuecker; E. Pierpaoli; C. R. Mullis; I. M. Gioia; J. P. Henry

    2006-11-17

    X-ray surveys facilitate investigations of the environment of AGNs. Deep Chandra observations revealed that the AGNs source surface density rises near clusters of galaxies. The natural extension of these works is the measurement of spatial clustering of AGNs around clusters and the investigation of relative biasing between active galactic nuclei and galaxies near clusters. The major aims of this work are to obtain a measurement of the correlation length of AGNs around clusters and a measure of the averaged clustering properties of a complete sample of AGNs in dense environments. We present the first measurement of the soft X-ray cluster-AGN cross-correlation function in redshift space using the data of the ROSAT-NEP survey. The survey covers 9x9 deg^2 around the North Ecliptic Pole where 442 X-ray sources were detected and almost completely spectroscopically identified. We detected a > 3 sigma significant clustering signal on scales s<50 h_70^-1 Mpc. We performed a classical maximum-likelihood power-law fit to the data and obtained a correlation length s_0=8.7^+1.2_-0.3 h70^-1 Mpc and a slope gamma=1.7^+0.2_-0.7 (1 sigma errors). This is a strong evidence that AGNs are good tracers of the large scale structure of the Universe. Our data were compared to the results obtained by cross-correlating X-ray clusters and galaxies. We observe, with a large uncertainty, a similar behaviour of the AGNs clustering around clusters similar to the clustering of galaxies around clusters.

  5. Handbookfor International Students at ETH Zurich Please note

    E-Print Network [OSTI]

    experience. Studying away from home requires some preparation, and cer- tain matters must be taken care: formerly an industrial town, the city's focus has shifted to commerce and knowledge-intensive enter- prise

  6. HiRho CCD INTERNAL NOTE 31 October 1996

    E-Print Network [OSTI]

    it starts to roll off (at 1000 nm, the QE of a device without an antireflective coating is still over 60

  7. The soft X-ray Cluster-AGN spatial cross-correlation function in the ROSAT-NEP survey

    E-Print Network [OSTI]

    Cappelluti, N; Schücker, P; Pierpaoli, E; Mullis, C R; Gioia, I M; Henry, J P

    2006-01-01

    X-ray surveys facilitate investigations of the environment of AGNs. Deep Chandra observations revealed that the AGNs source surface density rises near clusters of galaxies. The natural extension of these works is the measurement of spatial clustering of AGNs around clusters and the investigation of relative biasing between active galactic nuclei and galaxies near clusters. The major aims of this work are to obtain a measurement of the correlation length of AGNs around clusters and a measure of the averaged clustering properties of a complete sample of AGNs in dense environments. We present the first measurement of the soft X-ray cluster-AGN cross-correlation function in redshift space using the data of the ROSAT-NEP survey. The survey covers 9x9 deg^2 around the North Ecliptic Pole where 442 X-ray sources were detected and almost completely spectroscopically identified. We detected a > 3 sigma significant clustering signal on scales s<50 h_70^-1 Mpc. We performed a classical maximum-likelihood power-law fi...

  8. The 3D soft X-ray cluster-AGN cross-correlation function in the ROSAT NEP survey

    E-Print Network [OSTI]

    Cappelluti, N; Schücker, P; Pierpaoli, E; Mullis, C R; Gioia, I M; Henry, J P

    2007-01-01

    X-ray surveys facilitate investigations of the environment of AGNs. Deep Chandra observations revealed that the AGNs source surface density rises near clusters of galaxies. The natural extension of these works is the measurement of spatial clustering of AGNs around clusters and the investigation of relative biasing between active galactic nuclei and galaxies near clusters.The major aims of this work are to obtain a measurement of the correlation length of AGNs around clusters and a measure of the averaged clustering properties of a complete sample of AGNs in dense environments. We present the first measurement of the soft X-ray cluster-AGN cross-correlation function in redshift space using the data of the ROSAT-NEP survey. The survey covers 9x9 deg^2 around the North Ecliptic Pole where 442 X-ray sources were detected and almost completely spectroscopically identified. We detected a >3sigma significant clustering signal on scales s<50 h70^-1 Mpc. We performed a classical maximum-likelihood power-law fit to...

  9. Empirical links between XRB and AGN accretion using the complete z < 0.4 spectroscopic CSC/SDSS catalog

    SciTech Connect (OSTI)

    Trichas, Markos [EADS Astrium, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2AS (United Kingdom); Green, Paul J.; Aldcroft, Tom; Sobolewska, Malgosia; Kim, Dong-Woo [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Constantin, Anca [Department of Physics and Astronomy, James Madison University, PHCH, Harrisonburg, VA 22807 (United States); Kalfountzou, Eleni [Center for Astrophysics, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB (United Kingdom); Hyde, Ashley K. [Astrophysics Group, Imperial College London, London SW7 2AZ (United Kingdom); Zhou, Hongyan [Center for Astrophysics, University of Science and Technology of China, Hefei 230026 (China); Haggard, Daryl [Center for Interdisciplinary Exploration and Research in Astrophysics, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (United States); Kelly, Brandon C., E-mail: markos.trichas@astrium.eads.net [Department of Physics, Broida Hall, University of California, Santa Barbara, CA 93107 (United States)

    2013-12-01

    Striking similarities have been seen between accretion signatures of Galactic X-ray binary (XRB) systems and active galactic nuclei (AGNs). XRB spectral states show a V-shaped correlation between X-ray spectral hardness and Eddington ratio as they vary, and some AGN samples reveal a similar trend, implying analogous processes at vastly larger masses and timescales. To further investigate the analogies, we have matched 617 sources from the Chandra Source Catalog to Sloan Digital Sky Survey spectroscopy, and uniformly measured both X-ray and optical spectral characteristics across a broad range of AGN and galaxy types. We provide useful tabulations of X-ray spectral slope for broad- and narrow-line AGNs, star-forming and passive galaxies, and composite systems, also updating relationships between optical (H? and [O III]) line emission and X-ray luminosity. We further fit broadband spectral energy distributions with a variety of templates to estimate bolometric luminosity. Our results confirm a significant trend in AGNs between X-ray spectral hardness and Eddington ratio expressed in X-ray luminosity, albeit with significant dispersion. The trend is not significant when expressed in the full bolometric or template-estimated AGN luminosity. We also confirm a relationship between the X-ray/optical spectral slope ?{sub ox} and Eddington ratio, but it may not follow the trend predicted by analogy with XRB accretion states.

  10. Radio observations of the first three-month Fermi-AGN at 4.8 GHz

    E-Print Network [OSTI]

    Xiang Liu; Hua-Gang Song; Jun Liu; Zhen Ding; Nicola Marchili; Thomas P. Krichbaum; Lars Fuhrmann; Anton Zensus; Tao An

    2011-10-09

    Using the Urumqi 25m radio telescope, sources from the first three-month Fermi-LAT detected AGN catalog with declination >0 were observed in 2009 at 4.8 GHz. The radio flux density appears to correlate with the gamma-ray intensity. Intra-day variability (IDV) observations were performed in March, April and May in 2009 for selected 42 gamma-ray bright blazars, and 60% of them show evident flux variability at 4.8 GHz during the IDV observations, the IDV detection rate is higher than that in previous flat-spectrum AGN samples. The IDV appears more often in the VLBI-core dominant blazars, and the non-IDV blazars show relatively `steeper' spectral indices than the IDV blazars. Pronounced inter-month variability has been found in two BL Lac objects: J0112+2244 and J0238+1636.

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

    SciTech Connect (OSTI)

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

    2013-04-20

    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.

  12. The galactic dynamo, the helical force free field and the emissions of AGN

    SciTech Connect (OSTI)

    Colgate, S.; Li, Hui

    1997-05-01

    We present a theory relating the central galactic black hole (BH) formation to the galactic dynamo through an accretion disk. The associated AGN emissions and the collimated radio sources are then a result of the dynamo process. A unified theory of quasar and BL-Lac formation (hereafter AGN) starts with the collapse of damped Lyman-alpha clouds, presumably proto-galaxies, which then evolve to a central disk and black hole, (BH). An alpha - omega dynamo forms in this accretion disk where the augmentation of the poloidal field from the toroidal field depends upon star disk collisions. The winding number of the inner most orbit of the disk is so large, tilde 10 to the 11th power that the total gain of the dynamo is semi-infinite, and the original seed field of no consequence. The total magnetic flux produced is tilde 10000 times that of the galaxy, sufficient to explain the much larger flux of clusters. The semi-infinite gain of the dynamo implies that the field saturates at the dynamic stress so that most of the free energy of formation of the BH is carried off as magnetic energy in the form of a magnetic helix. The dissipation of this magnetic energy leads to the unique emission spectrum of AGN as well as the equally startling collimated radio and optical sources.

  13. Neutral hydrogen in galaxy clusters: impact of AGN feedback and implications for intensity mapping

    E-Print Network [OSTI]

    Villaescusa-Navarro, Francisco; Borgani, Stefano; Viel, Matteo; Rasia, Elena; Murante, Giuseppe; Dolag, Klaus; Steinborn, Lisa K; Biffi, Veronica; Beck, Alexander M; Ragone-Figueroa, Cinthia

    2015-01-01

    By means of zoom-in hydrodynamic simulations we quantify the amount of neutral hydrogen (HI) hosted by groups and clusters of galaxies. Our simulations, which are based on an improved formulation of smoothed particle hydrodynamics (SPH), include radiative cooling, star formation, metal enrichment and supernova feedback, and can be split in two different groups, depending on whether feedback from active galactic nuclei (AGN) is turned on or off. Simulations are analyzed to account for HI self-shielding and the presence of molecular hydrogen. We find that the mass in neutral hydrogen of dark matter halos monotonically increases with the halo mass and can be well described by a power-law of the form $M_{\\rm HI}(M,z)\\propto M^{3/4}$. Our results point out that AGN feedback reduces both the total halo mass and its HI mass, although it is more efficient in removing HI. We conclude that AGN feedback reduces the neutral hydrogen mass of a given halo by $\\sim50\\%$, with a weak dependence on halo mass and redshift. The...

  14. The self-regulated AGN feedback loop: the role of chaotic cold accretion

    E-Print Network [OSTI]

    Gaspari, M

    2015-01-01

    Supermassive black hole accretion and feedback play central role in the evolution of galaxies, groups, and clusters. I review how AGN feedback is tightly coupled with the formation of multiphase gas and the newly probed chaotic cold accretion (CCA). In a turbulent and heated atmosphere, cold clouds and kpc-scale filaments condense out of the plasma via thermal instability and rain toward the black hole. In the nucleus, the recurrent chaotic collisions between the cold clouds, filaments, and central torus promote angular momentum cancellation or mixing, boosting the accretion rate up to 100 times the Bondi rate. The rapid variability triggers powerful AGN outflows, which quench the cooling flow and star formation without destroying the cool core. The AGN heating stifles the formation of multiphase gas and accretion, the feedback subsides and the hot halo is allowed to cool again, restarting a new cycle. Ultimately, CCA creates a symbiotic link between the black hole and the whole host via a tight self-regulate...

  15. ALMA resolves extended star formation in high-z AGN host galaxies

    E-Print Network [OSTI]

    Harrison, C M; Stanley, F; Alexander, D M; Daddi, E; Mullaney, J R; Pannella, M; Rosario, D J; Smail, Ian

    2015-01-01

    We present high-resolution Atacama Large Millimeter Array (ALMA) 870um imaging of five z~1.5-4.5 X-ray detected AGN (with luminosities of L(X)>10^42 erg/s). The sub-millimetre emission is extended on scales of FWHM~0.2"-0.5", corresponding to physical sizes of 1-3 kpc (median value of 1.8 kpc). These sizes are comparable to the majority of z=1-5 sub-millimetre galaxies (SMGs) with equivalent ALMA measurements. In combination with spectral energy distribution analyses, we attribute this rest-frame far-infrared (FIR) emission to dust heated by star formation. The implied star-formation rate surface densities are 20-200 Msol/yr/kpc^2, which are consistent with SMGs of comparable FIR luminosities (i.e., L(IR)~ [1-5]x10^12 Lsol). Although limited by a small sample of AGN, which all have high FIR luminosities, our study suggests that the kpc-scale spatial distribution and surface density of star formation in high-redshift star-forming galaxies is the same irrespective of the presence of X-ray detected AGN.

  16. Fitting LINER nuclei within the AGN family: A matter of obscuration?

    E-Print Network [OSTI]

    Gonzalez-Martin, O; Márquez, I; Guainazzi, M

    2009-01-01

    In this paper we study the nuclear obscuration of galaxies hosting LINERs based on their X-ray and optical emission. They show column densities (N_H) at soft energies (0.5-2 keV) mostly related to the diffuse emission around the AGN, showing a correlation with the optical extinction. N_H at hard energies (2-10 keV) seem to be much higher than what would be expected from the optical extinction. They might be associated to the inner regions of the AGN, buried at optical wavelengths. The main result of this paper is that around 50% of our LINER sample shows signatures of Compton-thickness (CT) according to the most common tracers: the X-ray spectral index, F(2-10 keV)/F([OIII]) ratio and EW(FeKa). However, the EWs of CT LINERs are significantly lower than in CT Sy, suggesting that the 2-10 keV emission is dominated by electron scattering of the otherwise invisible AGN, or by emission from shocked gas associated to star formation rather than by reflection from the inner wall of the torus. However, no clear relati...

  17. Lecture notes Introductory fluid mechanics

    E-Print Network [OSTI]

    Malham, Simon J.A.

    Lecture notes Introductory fluid mechanics Simon J.A. Malham Simon J.A. Malham (15th September 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

  18. SIGGRAPH Asia 2008 Course notes

    E-Print Network [OSTI]

    Gutierrez, Diego

    SIGGRAPH Asia 2008 Scattering Course notes Diego Gutierrez Universidad de Zaragoza Henrik Wann@cs.cmu.edu §wjarosz@cs.ucsd.edu 1 #12;1 About the Lecturers Diego Gutierrez University of Zaragoza http://giga.cps.unizar.es/ diegog Diego Gutierrez is an Associate Professor at the University of Zaragoza, in Spain, where he

  19. Note on Discrete Gauge Anomalies

    E-Print Network [OSTI]

    T. Banks; M. Dine

    1991-10-02

    We consider the probem of gauging discrete symmetries. All valid constraints on such symmetries can be understood in the low energy theory in terms of instantons. We note that string perturbation theory often exhibits global discrete symmetries, which are broken non-perturbatively.

  20. HST-COS OBSERVATIONS OF AGNs. I. ULTRAVIOLET COMPOSITE SPECTRA OF THE IONIZING CONTINUUM AND EMISSION LINES

    SciTech Connect (OSTI)

    Shull, J. Michael; Stevans, Matthew; Danforth, Charles W., E-mail: michael.shull@colorado.edu, E-mail: matthew.stevans@colorado.edu, E-mail: charles.danforth@colorado.edu [CASA, Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309 (United States)

    2012-06-20

    The ionizing fluxes from quasars and other active galactic nuclei (AGNs) are critical for interpreting the emission-line spectra of AGNs and for photoionization and heating of the intergalactic medium. Using ultraviolet spectra from the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope (HST), we have directly measured the rest-frame ionizing continua and emission lines for 22 AGNs. Over the redshift range 0.026 < z < 1.44, COS samples the Lyman continuum and many far-UV emission lines (Ly{alpha} {lambda}1216, C IV {lambda}1549, Si IV/O IV] {lambda}1400, N V {lambda}1240, O VI {lambda}1035). Strong EUV emission lines with 14-22 eV excitation energies (Ne VIII {lambda}{lambda}770, 780, Ne V {lambda}569, O II {lambda}834, O III {lambda}833, {lambda}702, O IV {lambda}788, 608, 554, O V {lambda}630, N III {lambda}685) suggest the presence of hot gas in the broad emission-line region. The rest-frame continuum, F{sub {nu}}{proportional_to}{nu}{sup {alpha}{sub {nu}}}, shows a break at wavelengths {lambda} < 1000 A, with spectral index {alpha}{sub {nu}} = -0.68 {+-} 0.14 in the FUV (1200-2000 A) steepening to {alpha}{sub {nu}} = -1.41 {+-} 0.21 in the EUV (500-1000 A). The COS EUV index is similar to that of radio-quiet AGNs in the 2002 HST/FOS survey ({alpha}{sub {nu}} = -1.57 {+-} 0.17). We see no Lyman edge ({tau}{sub HI} < 0.03) or He I {lambda}584 emission in the AGN composite. Our 22 AGNs exhibit a substantial range of FUV/EUV spectral indices and a correlation with AGN luminosity and redshift, likely due to observing below the 1000 A spectral break.

  1. 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

  2. The AGN content in luminous IR galaxies at z\\sim2 from a global SED analysis including Herschel data

    E-Print Network [OSTI]

    Pozzi, F; Gruppioni, C; Feltre, A; Fritz, J; Fadda, D; Andreani, P; Berta, S; Cimatti, A; Delvecchio, I; Lutz, D; Magnelli, B; Maiolino, R; Nordon, R; Popesso, P; Rodighiero, G; Rosario, D; Santini, P; Vaccari, M

    2012-01-01

    We use Herschel-PACS far-infrared data, combined with previous multi-band information and mid-IR spectra, to properly account for the presence of an active nucleus and constrain its energetic contribution in luminous infrared (IR) sources at z\\sim2. The sample is composed of 24 sources in the GOODS-South field, with typical IR luminosity of 10^{12} Lo. Data from the 4 Ms Chandra X-ray imaging in this field are also used to identify and characterize AGN emission. We reproduce the observed spectral energy distribution (SED), decomposed into a host-galaxy and an AGN component. A smooth-torus model for circum-nuclear dust is used to account for the direct and re-processed contribution from the AGN. We confirm that galaxies with typical L_{8-1000um}\\sim10^{12}Lo at z\\sim2 are powered predominantly by star-formation. An AGN component is present in nine objects (\\sim35% of the sample) at the 3sigma confidence level, but its contribution to the 8-1000 um emission accounts for only \\sim5% of the energy budget. The AGN...

  3. Note

    E-Print Network [OSTI]

    ... spell the saile, which is done by letting-goe the sheats and bowlings, and bracing the weather-brace in the wind; then the saile will lie all loose in the wind: but ...

  4. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications64NewsroomNontoxic quantumNot All

  5. International energy outlook 1996

    SciTech Connect (OSTI)

    NONE

    1996-05-01

    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.

  6. The Compton-thick AGN in the GPS radio source OQ+208

    E-Print Network [OSTI]

    M. Guainazzi; C. Stanghellini; P. Grandi

    2002-08-30

    We report in this paper the ASCA discovery of the first radio-loud Active Galactic Nucleus (AGN) covered by a Compton-thick X-ray absorber, in the GigaHertz Peaked Spectrum (GPS) radio source OQ+208. It represents one of the few available direct measurements of dense matter in the nuclear environment of this class of sources, which may provide the confining medium to the radio-emitting region if GPS sources are indeed "frustrated" classical radio doubles. The perspective of future studies with XEUS are discussed.

  7. The role of star-formation and AGN in dust heating of z = 0.3-2.8 galaxies - I. Evolution with redshift and luminosity

    E-Print Network [OSTI]

    Kirkpatrick, Allison; Sajina, Anna; Roebuck, Eric; Yan, Lin; Armus, Lee; Diaz-Santos, Tanio; Stierwalt, Sabrina

    2015-01-01

    We characterize infrared spectral energy distributions of 343 (Ultra) Luminous Infrared Galaxies from $z=0.3-2.8$. We diagnose the presence of an AGN by decomposing individual Spitzer mid-IR spectroscopy into emission from star-formation and an AGN-powered continuum; we classify sources as star-forming galaxies (SFGs), AGN, or composites. Composites comprise 30% of our sample and are prevalent at faint and bright $S_{24}$, making them an important source of IR AGN emission. We combine spectroscopy with multiwavelength photometry, including Herschel imaging, to create three libraries of publicly available templates (2-1000 $\\mu$m). We fit the far-IR emission using a two temperature modified blackbody to measure cold and warm dust temperatures ($T_c$ and $T_w$). We find that $T_c$ does not depend on mid-IR classification, while $T_w$ shows a notable increase as the AGN grows more luminous. We measure a quadratic relationship between mid-IR AGN emission and total AGN contribution to $L_{\\rm IR}$. AGN, composites...

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

    SciTech Connect (OSTI)

    Khan, T.A.; Xie, J.W.; Beckman, M.C.

    1994-02-01

    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.

  9. HST-COS observations of AGNs. II. Extended survey of ultraviolet composite spectra from 159 active galactic nuclei

    SciTech Connect (OSTI)

    Stevans, Matthew L. [Present address: Astronomy Department, University of Texas, Austin, TX 78712, USA. (United States); Shull, J. Michael [Also at Institute of Astronomy, Cambridge University, Cambridge CB3 OHA, UK. (United Kingdom); Danforth, Charles W.; Tilton, Evan M., E-mail: stevans@astro.as.utexas.edu, E-mail: michael.shull@colorado.edu, E-mail: charles.danforth@colorado.edu, E-mail: evan.tilton@colorado.edu [CASA, Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309 (United States)

    2014-10-10

    The ionizing fluxes from quasars and other active galactic nuclei (AGNs) are critical for interpreting their emission-line spectra and for photoionizing and heating the intergalactic medium. Using far-ultraviolet (FUV) spectra from the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope (HST), we directly measure the rest-frame ionizing continua and emission lines for 159 AGNs at redshifts 0.001 < z {sub AGN} < 1.476 and construct a composite spectrum from 475 to 1875 Å. We identify the underlying AGN continuum and strong extreme ultraviolet (EUV) emission lines from ions of oxygen, neon, and nitrogen after masking out absorption lines from the H I Ly? forest, 7 Lyman-limit systems (N{sub H} {sub I}?10{sup 17.2} cm{sup –2}) and 214 partial Lyman-limit systems (14.5AGNs exhibit a wide range of FUV/EUV spectral shapes, F{sub ?}??{sup ?{sub ?}}, typically with –2 ? ?{sub ?} ? 0 and no discernible continuum edges at 912 Å (H I) or 504 Å (He I). The composite rest-frame continuum shows a gradual break at ?{sub br} ? 1000 Å, with mean spectral index ?{sub ?} = –0.83 ± 0.09 in the FUV (1200-2000 Å) steepening to ?{sub ?} = –1.41 ± 0.15 in the EUV (500-1000 Å). We discuss the implications of the UV flux turnovers and lack of continuum edges for the structure of accretion disks, AGN mass inflow rates, and luminosities relative to Eddington values.

  10. Amnesty International

    SciTech Connect (OSTI)

    None

    2006-04-11

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

  11. Amnesty International

    ScienceCinema (OSTI)

    None

    2011-04-25

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

  12. ENGINEERING INTERNATIONAL

    E-Print Network [OSTI]

    University of Technology, Sydney

    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

  13. Lecture notes for criticality safety

    SciTech Connect (OSTI)

    Fullwood, R.

    1992-03-01

    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.

  14. Lecture Notes in Quantum Mechanics

    E-Print Network [OSTI]

    Doron Cohen

    2013-08-27

    These lecture notes cover undergraduate textbook topics (e.g. as in Sakurai), and also additional advanced topics at the same level of presentation. In particular: EPR and Bell; Basic postulates; The probability matrix; Measurement theory; Entanglement; Quantum computation; Wigner-Weyl formalism; The adiabatic picture; Berry phase; Linear response theory; Kubo formula; Modern approach to scattering theory with mesoscopic orientation; Theory of the resolvent and the Green function; Gauge and Galilei Symmetries; Motion in magnetic field; Quantum Hall effect; Quantization of the electromagnetic field; Fock space formalism.

  15. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101Company Level Imports Explanatory Notes

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

    E-Print Network [OSTI]

    Mateo, Jill M.

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

  17. Author's personal copy A note on the scope of the journal

    E-Print Network [OSTI]

    Lee, Xuhui

    Author's personal copy Editorial A note on the scope of the journal Agricultural and Forest Meteorology is an international journal for the publication of original articles and reviews on the inter experimental data. In recent years, the journal has seen a rapid increase in submission numbers. This growth

  18. Tech. Note ARDB 231 A New Lithium Oven Plasma Source For E-157 Plasma

    E-Print Network [OSTI]

    1 Tech. Note ARDB 231 A New Lithium Oven Plasma Source For E-157 Plasma Wakefield Accelerator Experiments K. A. Marsh and Shuoqin Wang INTRODUCTION A new 1.4 meter long lithium oven has been built source, there are some new diagnostic features for the present oven. Internal thermocouple probes were

  19. Dressing a naked quasar: star formation and AGN feedback in HE0450-2958

    E-Print Network [OSTI]

    Ilana Klamer; Padelis Papadopoulos; Ron Ekers; Enno Middelberg

    2007-03-06

    We present Australia Telescope Compact Array radio continuum observations of the quasar/galaxy system HE0450-2958. An asymetric triple linear morphology is observed, with the central radio component coincident with the quasar core and a second radio component associated with a companion galaxy at a projected distance of 7kpc from the quasar. The system obeys the far-infrared to radio continuum correlation, implying the radio emission is energetically dominated by star formation activity. However, there is undoubtedly some contribution to the overall radio emission from a low-luminosity AGN core and a pair of radio lobes. Long baseline radio interferometric observations of the quasar core place a 3sigma upper limit of 0.6mJy at 1400MHz on the AGN contribution to the quasar's radio emission; less than 30% of the total. The remaining 70% of the radio emission from the quasar is associated with star formation activity and provides the first direct evidence for the quasar's host galaxy. A re-anlaysis of the VLT spectroscopic data shows extended emission line regions aligned with the radio axis and extended on scales of ~20kpc. This is interpreted as evidence for jet-cloud interactions, similar to those observed in radio galaxies and Seyferts. The emission lines in the companion galaxy are consistent with radiative shocks and its spatial association with the eastern radio lobe implies large-scale jet-induced star formation has played a role in this galaxy's evolution.

  20. Integral Field Spectroscopy of AGN Absorption Outflows: Mrk 509 and IRAS F04250-5718

    E-Print Network [OSTI]

    Liu, Guilin; Rupke, David S N

    2015-01-01

    Ultravoilet (UV) absorption lines provide abundant spectroscopic information enabling the probe of the physical conditions in AGN outflows, but the outflow radii (and the energetics consequently) can only be determined indirectly. In this paper, we present the first direct test of these determinations using integral field unit (IFU) spectroscopy. We have conducted Gemini IFU mapping of the ionized gas nebulae surrounding two AGNs, whose outflow radii have been constrained by UV absorption line analyses. In Mrk 509, we find a quasi-spherical outflow with a radius of 1.2 kpc and a velocity of $\\sim290$ km s$^{-1}$, while IRAS F04250$-$5718 is driving a biconical outflow extending out to 2.9 kpc, with a velocity of $\\sim580$ km s$^{-1}$ and an opening angle of $\\sim70^{\\circ}$. The derived mass flow rate is $\\sim5$ and $>1$ M$_{\\odot}$ yr$^{-1}$, respectively, and the kinetic luminosity is $\\gtrsim1\\times10^{41}$ erg s$^{-1}$ for both. Adopting the outflow radii and geometric parameters measured from IFU, absorp...

  1. X-ray fluorescent lines from the Compton-thick AGN in M5

    E-Print Network [OSTI]

    Xu, Weiwei; Gou, Lijun; Liu, Jiren

    2015-01-01

    The cold disk/torus gas surrounding AGN emits fluorescent lines when irradiated by hard X-ray photons. The fluorescent lines of elements other than Fe and Ni are rarely detected due to their relative faintness. We report the detection of K$\\alpha$ lines of neutral Si, S, Ar, Ca, Cr, and Mn, along with the prominent Fe K$\\alpha$, Fe K$\\beta$, and Ni K$\\alpha$ lines, from the deep Chandra observation of the low-luminosity Compton-thick AGN in M51. The Si K$\\alpha$ line at 1.74 keV is detected at $\\sim3\\sigma$, the other fluorescent lines have a significance between 2 and 2.5 $\\sigma$, while the Cr line has a significance of $\\sim1.5\\sigma$. These faint fluorescent lines are made observable due to the heavy obscuration of the intrinsic spectrum of M51, which is revealed by Nustar observation above 10 keV. The hard X-ray continuum of M51 from Chandra and Nustar can be fitted with a power-law spectrum with an index of 1.8, reprocessed by a torus with an equatorial column density of $N_{\\rm H}\\sim7\\times10^{24}$ cm...

  2. Can photo-ionization explain the decreasing fraction of X-ray obscured AGN with luminosity?

    E-Print Network [OSTI]

    A. Akylas; I. Georgantopoulos

    2008-01-30

    Chandra and XMM surveys show that the fraction of obscured AGN decreases rapidly with increasing luminosity. Although this is usually explained by assuming that the covering factor of the central engine is much smaller at luminous QSOs, the exact origin of this effect remains unknown. We perform toy simulations to test whether photo-ionisation of the obscuring screen in the presence of a strong radiation field can reproduce this effect. In particular, we create X-ray spectral simulations using a warm absorber model assuming a range of input column densities and ionization parameters. We fit instead the simulated spectra with a simple cold absorption power-law model that is the standard practice in X-ray surveys. We find that the fraction of absorbed AGN should fall with luminosity as $L^{-0.16\\pm0.03}$ in rough agreement with the observations. Furthermore, this apparent decrease in the obscuring material is consistent with the dependence of the FeK$\\alpha$ narrow-line equivalent width on luminosity, ie. the X-ray Baldwin effect.

  3. The peculiar radio galaxy 4C 35.06: a case for recurrent AGN activity?

    E-Print Network [OSTI]

    Shulevski, A; Barthel, P D; Murgia, M; van Weeren, R J; White, G J; Brüggen, M; Kunert-Bajraszewska, M; Jamrozy, M; Best, P N; Röttgering, H J A; Chyzy, K T; de Gasperin, F; Bîrzan, L; Brunetti, G; Brienza, M; Rafferty, D A; Anderson, J; Beck, R; Deller, A; Zarka, P; Schwarz, D; Mahony, E; Orrú, E; Bell, M E; Bentum, M J; Bernardi, G; Bonafede, A; Breitling, F; Broderick, J W; Butcher, H R; Carbone, D; Ciardi, B; de Geus, E; Duscha, S; Eislöffel, J; Engels, D; Falcke, H; Fallows, R A; Fender, R; Ferrari, C; Frieswijk, W; Garrett, M A; Grießmeier, J; Gunst, A W; Heald, G; Hoeft, M; Hörandel, J; Horneffer, A; van der Horst, A J; Intema, H; Juette, E; Karastergiou, A; Kondratiev, V I; Kramer, M; Kuniyoshi, M; Kuper, G; Maat, P; Mann, G; McFadden, R; McKay-Bukowski, D; McKean, J P; Meulman, H; Mulcahy, D D; Munk, H; Norden, M J; Paas, H; Pandey-Pommier, M; Pizzo, R; Polatidis, A G; Reich, W; Rowlinson, A; Scaife, A M M; Serylak, M; Sluman, J; Smirnov, O; Steinmetz, M; Swinbank, J; Tagger, M; Tang, Y; Tasse, C; Thoudam, S; Toribio, M C; Vermeulen, R; Vocks, C; Wijers, R A M J; Wise, M W; Wucknitz, O

    2015-01-01

    Using observations obtained with the LOw Fequency ARray (LOFAR), the Westerbork Synthesis Radio Telescope (WSRT) and archival Very Large Array (VLA) data, we have traced the radio emission to large scales in the complex source 4C 35.06 located in the core of the galaxy cluster Abell 407. At higher spatial resolution (~4"), the source was known to have two inner radio lobes spanning 31 kpc and a diffuse, low-brightness extension running parallel to them, offset by about 11 kpc (in projection). At 62 MHz, we detect the radio emission of this structure extending out to 210 kpc. At 1.4 GHz and intermediate spatial resolution (~30"), the structure appears to have a helical morphology. We have derived the characteristics of the radio spectral index across the source. We show that the source morphology is most likely the result of at least two episodes of AGN activity separated by a dormant period of around 35 Myr. The AGN is hosted by one of the galaxies located in the cluster core of Abell 407. We propose that it ...

  4. A comprehensive classification of galaxies in the SDSS: How to tell true from fake AGN?

    E-Print Network [OSTI]

    Fernandes, R Cid; Mateus, A; Asari, N Vale

    2010-01-01

    We use the W_Ha versus [NII]/Ha (WHAN) diagram to provide a comprehensive emission-line classification of SDSS galaxies. This classification is able to cope with the large population of weak line galaxies that do not appear in traditional diagrams due to a lack of some of the diagnostic lines. A further advantage of the WHAN diagram is to allow the differentiation between two very distinct classes that overlap in the LINER region of traditional diagnostic diagrams. These are galaxies hosting a weakly active nucleus (wAGN) and "retired galaxies" (RGs), i.e. galaxies that have stopped forming stars and are ionized by their hot evolved low-mass stars. A useful criterion to distinguish true from fake AGN (i.e. the RGs) is the ratio (\\xi) of the extinction-corrected L_Ha with respect to the Ha luminosity expected from photoionization by stellar populations older than 100 Myr. This ratio follows a markedly bimodal distribution, with a \\xi >> 1 population composed by systems undergoing star-formation and/or nuclear ...

  5. An Atlas of Warm AGN and Starbursts from the IRAS Deep Fields

    E-Print Network [OSTI]

    Keel, W C; May, A; Miley, G K; Golombek, D; De Grijp, M H K; Gallimore, J F; Keel, William C; Irby, Bryan K; May, Alana; Miley, George K; Golombek, Daniel

    2005-01-01

    We present 180 AGN candidates based on color selection from the IRAS slow-scan deep observations, with color criteria broadened from the initial Point-Source Catalog samples to include similar objects with redshifts up to z=1 and allowing for two-band detections. Spectroscopic identifications have been obtained for 80 (44%); some additional ones are secure based on radio detections or optical morphology, although yet unobserved spectroscopically. These spectroscopic identifications include 13 Sy 1 galaxies, 17 Sy 2 Seyferts, 29 starbursts, 7 LINER systems, and 13 emission-line galaxies so heavily reddened as to remain of ambiguous classification. The optical magnitudes range from R=12.0-20.5; counts suggest that incompleteness is important fainter than R=15.5. Redshifts extend to z=0.51, with a significant part of the sample at z>0.2. The sample includes slightly more AGN than star-forming systems among those where the spectra contain enough diagnostic feature to make the distinction. The active nuclei includ...

  6. A Hybrid Two Component Accretion Flow Surrounding Supermassive Black Holes in AGN

    E-Print Network [OSTI]

    Liu, B F; Qiao, E; Yuan, W

    2015-01-01

    It is commonly believed that the optical/UV and X-ray emissions in luminous AGN are produced in an accretion disk and an embedded hot corona respectively. The inverse Compton scattering of disk photons by hot electrons in the corona can effectively cool the coronal gas if the mass supply is predominantly via a cool disk like flow as in BHXRBs. Thus, the application of such a model to AGNs fails to produce their observed X-ray emission. As a consequence, a fraction of disk accretion energy is usually assumed to be transferred to the corona. To avoid this assumption, we propose that gas in a vertically extended distribution is supplied to a supermassive black hole by the gravitational capture of interstellar medium or stellar wind material. In this picture, the gas partially condenses to an underlying cool disk as it flows toward the black hole, releasing accretion energy as X-ray emission and supplying mass for the disk accretion. Detailed numerical calculations reveal that the X-ray luminosity can reach a few...

  7. M84 - Can the AGN Affect The Orientation of The Disk?

    E-Print Network [OSTI]

    A. C. Quillen; Gary Bower

    1997-09-11

    In M84 dust features are not aligned with the galaxy isophotes but are perpendicular to the radio jets. We estimate the timescale that the gas disk should precess in the galaxy. Since this timescale is short ($\\sim 2\\times 10^7$ years at 100 pc) we consider mechanisms that could cause the gas disk to be misaligned with the galaxy. One possibility is that a cooling flow replenishes the disk on this timescale and at angles that vary with radius. Another possibility is that there is a pressure on the disk that is large enough to overcome the torque from the galaxy. We estimate this pressure and find that it can be provided by ram pressure from an energetic interstellar medium that is consistent with velocity dispersions observed in ionized gas and densities estimated from the X-ray emission. We therefore propose that an AGN associated energetic interstellar medium is responsible for causing the gas disk in M84 to be misaligned with the galaxy isophotal major axis for $r \\lta 600$ pc. We propose that AGN associated outflows or kinetic motion in low density media could be responsible for jet/disk alignments observed on 100 pc scales in nearby radio galaxies.

  8. Selection of AGN to study the extragalactic background light with HAWC

    E-Print Network [OSTI]

    ,

    2015-01-01

    The extragalactic background light (EBL) is all the electromagnetic energy released by resolved and unresolved extragalactic sources since the recombination era. Its intensity and spectral shape provide information about the evolution of galaxies throughout cosmic history. Since direct observations of the EBL are very difficult to perform, the study of the interaction between the low energy EBL photons and high energy photons from distant extragalactic sources becomes relevant to constrain the EBL intensity. The main goal of this study is to investigate the opacity of the EBL to gamma rays by observing a sample of active galaxies nuclei (AGN) with the High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory. Current gamma-ray observations up to 20 TeV performed by Imaging Atmospheric Cherenkov Telescopes (IACTs) have constrained the EBL intensity in the 0.1-50 $\\mu$m region. HAWC, which monitors the gamma-ray sky in the 100 GeV to 100 TeV energy range, will be able to detect about 10 AGN with the first year...

  9. Notes for completing MRI screening Forms. rev 09-2006 Page 1 of 4 UCSD Center for Functional MRI September, 2006

    E-Print Network [OSTI]

    California at San Diego, University of

    , tens unit, bone stimulator, insulin or other medication pump, automatic defibrillator, internal pacing, medicated pain relief patch) 21. Yes No Do you wear a hearing aid or dentures? #12;Notes for completing MRI

  10. chromatography tech note 2644 Ceramic Hydroxyapatite

    E-Print Network [OSTI]

    Lebendiker, Mario

    chromatography tech note 2644 CHTTM Ceramic Hydroxyapatite: Use in Expanded Bed Adsorption Mode ceramic nature of CHT overcomes the physical and chemical instability that limits traditional

  11. COLLOQUIUM: NOTE SPECIAL DATE - THURSDAY: Unique Vulnerability...

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

    MBG Auditorium COLLOQUIUM: NOTE SPECIAL DATE - THURSDAY: Unique Vulnerability of the New YorkNew Jersey Metro Region to Hurricane Destruction - A New Perspective Based on...

  12. The exploration of massive multi-wavelength astronomical datasets: the case of AGNS in the Chandra Source Catalog

    E-Print Network [OSTI]

    D?Abrusco, Raffaele

    library. Different datasets obtained starting from samples of AGNs selected with different methods classification is available.This approach yields two advantages over the traditional study of low- dimensional.g., classification indices). A technique already applied to the problem of extraction of optical candidate quasars

  13. AGN FEEDBACK AND COOLING FLOWS: PROBLEMS WITH SIMPLE HYDRODYNAMIC MODELS John C. Vernaleo and Christopher S. Reynolds

    E-Print Network [OSTI]

    Reynolds, Christopher S.

    AGN FEEDBACK AND COOLING FLOWS: PROBLEMS WITH SIMPLE HYDRODYNAMIC MODELS John C. Vernaleo the cooling of the virialized intracluster medium (ICM) in the inner regions of galaxy clusters, solving the cooling flow problem and explaining the high-mass truncation of the galaxy luminosity function. We explore

  14. AGN duty cycle estimates for the ultra-steep spectrum radio relic VLSS J1431.8+1331

    E-Print Network [OSTI]

    Shulevski, A; Barthel, P D; Harwood, J J; Brunetti, G; van Weeren, R J; Röttgering, H J A; White, G J; Horellou, C; Kunert-Bajraszewska, M; Jamrozy, M; Chyzy, K T; Mahony, E; Miley, G; Brienza, M; Bîrzan, L; Rafferty, D A; Brüggen, M; Wise, M W; Conway, J; de Gasperin, F; Vilchez, N

    2015-01-01

    Steep spectrum radio sources associated with active galactic nuclei (AGN) may contain remnants of past AGN activity episodes. Novel instruments like the LOw Frequency ARray (LOFAR) are enabling studies of these fascinating structures to be made at tens to hundreds of MHz with sufficient resolution to analyse their complex morphology. Our goal is to characterize the integrated and resolved spectral properties of VLSS J1431+1331 and estimate source ages based on synchrotron radio emission models, thus putting constraints on the AGN duty cycle. Using a broad spectral coverage, we have derived spectral and curvature maps, and used synchrotron ageing models to determine the time elapsed from the last time the source plasma was energized. We used LOFAR, Giant Metrewave Radio Telescope (GMRT) and Jansky Very Large Array (VLA) data. Based on our ageing analysis, we infer that the AGN that created this source currently has very low levels of activity or that it is switched off. The derived ages for the larger source c...

  15. Distant FR I radio galaxies in the Hubble Deep Field: implications for the cosmological evolution of radio-loud AGN

    E-Print Network [OSTI]

    Best, Philip

    that number counts of radio sources contain important information about the distribution of radio sources by Jackson & Wall (1999), who use the source counts at several frequencies and redshift information of the 3C of radio-loud AGN I. A. G. SnellenP and P. N. Best Institute for Astronomy, Royal Observatory, Blackford

  16. Science with IUE and the Growth of an Astrophysical Group in Milan: from X-Ray Binaries to AGN

    E-Print Network [OSTI]

    Renato Falomo; Laura Maraschi; Elena Pian; Aldo Treves

    1998-11-16

    The contribution of an astrophysics group based in Milan to the science with the IUE satellite during its almost 20 years lifetime has focussed on high energy sources, of both galactic (LMXRB, HMXRB, and black hole candidates) and extragalactic (AGN) nature. The results of this long term research and in particular of the latest multiwavelength campaigns conducted simultaneously with IUE are reviewed here.

  17. A Note on Thermal Activation

    E-Print Network [OSTI]

    Daniel Boyanovsky; Richard Holman; Da-Shin Lee; João P. Silva

    1994-03-10

    Thermal activation is mediated by field configurations that correspond to saddle points of the energy functional. The rate of probability flow along the unstable functional directions, i.e the activation rate, is usually obtained from the imaginary part of a suitable analytic continuation of the equilibrium free energy. In this note we provide a real-time, non-equilibrium interpretation of this imaginary part which is analogous to the real-time interpretation of the imaginary part of the one-loop effective potential in theories with symmetry breaking. We argue that in situations in which the system is strongly out of equilibrium the rate will be time dependent and illustrate this with an example.

  18. Do radio-loud AGN really follow the same relation between black hole mass and stellar velocity dispersion as normal galaxies?

    E-Print Network [OSTI]

    Liu Yi; D. R. Jiang

    2006-12-11

    In an examination of the relationship between the black hole mass and stellar velocity dispersion in radio-loud active galactic nuclei (AGNs), we studied two effects which may cause uncertainties in the black hole mass estimates of radio-loud AGNs: the relativistic beaming effect on the observed optical continuum radiation and the orientation effect on the broad emission line width. After correcting these two effects, we re-examined the relation between black hole mass and stellar velocity dispersion which derived from [OIII] line width for a sample of radio-loud and radio-quiet AGNs, and found the relation for radio-loud AGNs still deviated from that for nearby normal galaxies and radio-quiet AGNs. We also found there is no significant correlation between radio jet power and narrow [OIII] line width, indicating absence of strong interaction between radio jet and narrow line region. It may be that the deviation of the relation between black hole mass and stellar velocity dispersion of radio-loud AGNs is intrinsic, or that the [OIII] line width is not a good indicator of stellar velocity dispersion for radio-loud AGNs.

  19. PIC Application Notes TechTools PIC Application Notes Page 23

    E-Print Network [OSTI]

    Peters, Dennis

    PIC Application Notes TechTools · PIC Application Notes · Page 23 APPS Introduction. This application note covers the use of incremental rotary encoders with PIC microcontrollers. It presents information. CLOCKWISE COUNTER CW Phase 1 Phase 2 4: Reading Rotary Encoders Reading Rotary Encoders #12;PIC

  20. EndNote X5 Basics What is EndNote?

    E-Print Network [OSTI]

    will need to choose between two installation types ­ Typical or Custom. If you choose Typical, you. This guide will show you the following basic steps for using EndNote: Opening or creating an EndNote Library Adding bibliographic references or citations to your library Using EndNote with Microsoft Word

  1. VLT-FORS2 optical imaging and spectroscopy of 9 luminous type 2 AGN at 0.3

    E-Print Network [OSTI]

    Humphrey, A; Almeida, C Ramos; Tadhunter, C N; Arribas, S; Bessiere, P S; Cabrera-Lavers, A

    2015-01-01

    We present optical imaging and long slit spectroscopic observations of 9 luminous type 2 AGNs within the redshift range 0.3tidal tails, amorphous halos, or compact emission line knots. The detection rate of morphological evidence for interaction is consistent with those found during previous studies of QSO2 at similar z, suggesting that the merger rate is independent of AGN power at the high end of the AGN luminosity function. We find the emission line flux spatial profiles are often dominated by the often spatially unresolved central source. In addition, all but one of our sample is associated with much fainter, extended line emission. We find these extended emiss...

  2. 221B Lecture Notes Scattering Theory II

    E-Print Network [OSTI]

    Murayama, Hitoshi

    ­Schwinger equation Eq. (1) is by pertur- bation theory, i.e., a power series expansion in the potential V . Note that) far away from the scatterer where r = |x| and k = k x r is the wave-vector of the scattered wave. Note, in the absence of the potential, | = | , or in other words, | = | + O(V ). Therefore the lowest (1st) order

  3. 221A Lecture Notes Path Integral

    E-Print Network [OSTI]

    Murayama, Hitoshi

    221A Lecture Notes Path Integral 1 Feynman's Path Integral Formulation Feynman's formulation to reach a position xf at time tf , you integrate over all possible paths connecting the points with a weight factor given by the classical action for each path. Hence the name path integral. This is it. Note

  4. 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

  5. NOTES ON THE JACOBI EQUATION ALEXANDER LYTCHAK

    E-Print Network [OSTI]

    Lytchak, Alexander

    NOTES ON THE JACOBI EQUATION ALEXANDER LYTCHAK Abstract. We discuss some properties of Jacobi spaces of Jacobi fields and give some applica- tions to Riemannian geometry. 1. Introduction This note is essentially a collection of results about conjugate points of Jacobi fields for which we could not find

  6. The Starburst-AGN connection: quenching the fire and feeding the beast

    E-Print Network [OSTI]

    Melnick, Jorge; De Propris, Roberto; Zhang-Hu, Chu

    2015-01-01

    The merger of two spiral galaxies is believed to be one of the main channels for the production of elliptical and early-type galaxies. In the process, the system becomes an (ultra) luminous infrared galaxy, or (U)LIRG, that morphs to a quasar, to a K+A galaxy, and finally to an early-type galaxy. The time scales for this metamorphosis are only loosely constrained by observations. In particular, the K+A phase should follow immediately after the QSO phase during which the dust and gas remaining from the (U)LIRG phase are expelled by the AGN. An intermediate class of QSOs with K+A spectral signatures, the post-starburst QSOs or PSQ, may represent the transitional phase between QSOs and K+As. We have compiled a sample of 72 {bona fide} $zenergy distribution of PSQ is well fitted by three ...

  7. VLBI Imaging of Luminous Infrared Galaxies: AGN Cores in Mrk231, UGC 5101 & NGC 7469

    E-Print Network [OSTI]

    Carol J. Lonsdale; Colin J. Lonsdale; Harding E. Smith; Philip J. Diamond

    2003-04-17

    We report 18cm VLBI continuum imaging observations at 5 mas resolution for UGC 5101, NGC 7469, and Mrk 231, all part of a sample of Luminous Infrared Galaxies which have been shown to have strong VLBI radio cores. The radio morphology of these three systems on VLBI scales is AGN-like, with well-defined ridgelines and high-brightness yet spatially resolved components. The structure and flux densities of these VLBI components are not consistent with starburst generated radio supernovae of the type found in Arp 220. On scales of 100pc the radio continuum in all three objects appears to be dominated by an AGN, not a starburst. Radio emission on larger scales may well originate in a less compact circumnuclear star-forming region. Confirming and extending VLBI imaging of Mrk 231 by Ulvestad et al. (1999), our continuum image shows a triple structure, with a core and two lobes, classifying it as a Compact Symmetric Object (CS0). If the southern (primary) lobe/hot-spot in Mrk 231 is confined by ram pressure, we estimate a lobe advance speed, $v_a \\sim 10^{-4}c$, and an age for the jet/compact source, $< 10^6 yr$. We have also imaged the 1667 MHz OH maser emission in Mrk 231, which is extended on scales of 50--100 milliarcsec (40--80 pc) and probably coincides with the inner region of the disk which is seen in CO emission and HI absorption. Among OH megamasers studied at high sensitivity with mas resolution, Mrk 231 is unique in the stringent upper limits placed upon the flux density of compact OH structures of the type found in Arp 220 and other LIGs. It is possible that the circumnuclear environment of Mrk 231 has been sufficiently disrupted by the emergent QSO that the cool, dense clouds necessary for such compact masers no longer exist.

  8. Notes on Newton-Krylov based Incompressible Flow Projection Solver...

    Office of Scientific and Technical Information (OSTI)

    Notes on Newton-Krylov based Incompressible Flow Projection Solver Citation Details In-Document Search Title: Notes on Newton-Krylov based Incompressible Flow Projection Solver The...

  9. AGN observations with a less than 100 GeV threshold using H.E.S.S. II

    E-Print Network [OSTI]

    Zaborov, Dmitry; Taylor, Andrew M; Lenain, Jean-Philippe; Sanchez, David; Parsons, Robert D

    2015-01-01

    The recent addition of the 28 m Cherenkov telescope (CT5) to the H.E.S.S. array extended the experiment's sensitivity towards low energies. The lowest energy threshold is obtained using monoscopic observations with CT5, providing access to gamma-ray energies below 100 GeV. This is particularly beneficial for studies of Active Galactic Nuclei (AGN) with soft spectra and located at redshifts >= 0.5. Stereoscopic measurements with the full array (CT1-5) provide a better background rejection than CT5 Mono, at a cost of a higher threshold. We report on the analysis employing the CT5 data for AGN observations with a < 100 GeV threshold. In particular, the spectra of PKS 2155-304 and PG 1553+113 are presented.

  10. A. La Rosa Lecture Notes APPLIED OPTICS

    E-Print Network [OSTI]

    light energy is transmitted from one point to another in an optical system. 2. Classical theoryA. La Rosa Lecture Notes APPLIED OPTICS ________________________________________________________________________ 11.1 Optics in different regimes The electromagnetic spectrum From: http

  11. Data Mining and Knowledge Discovery: Practice Notes

    E-Print Network [OSTI]

    Novak, Petra Kralj

    1 Data Mining and Knowledge Discovery: Practice Notes Petra Kralj Novak Petra.Kralj.Novak@ijs.si and exam · 2013/1/15: Written exam, seminar proposal discussion · 2013/2/12: Data mining seminar

  12. Data Mining and Knowledge Discovery: Practice Notes

    E-Print Network [OSTI]

    Novak, Petra Kralj

    1 Data Mining and Knowledge Discovery: Practice Notes Petra Kralj Novak Petra.Kralj.Novak@ijs.si on Weka 3: Descriptive data mining ­ Discussion about seminars and exam · 2013/12/16: Written exam

  13. Technical Note Post hoc Bayesian model selection

    E-Print Network [OSTI]

    Penny, Will

    Technical Note Post hoc Bayesian model selection Karl Friston , Will Penny The Wellcome Trust and Raftery, 1995; Penny et al., 2004). We will try to illustrate this perspective with a few toy examples

  14. Notes on Slovene and Slavic Etymology

    E-Print Network [OSTI]

    Hamp, Eric P.

    1997-01-01

    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), kašelj 'cough', ogenj 'flame, fire', and oglje 'charcoal'....

  15. First systematic search for oxygen-line blobs at high redshift: Uncovering AGN feedback and star formation quenching

    SciTech Connect (OSTI)

    Yuma, Suraphong; Ouchi, Masami; Ono, Yoshiaki; Momose, Rieko [Institute for Cosmic Ray Research, The University of Tokyo, Kashiwa-no-ha, Kashiwa 277-8582 (Japan); Drake, Alyssa B.; Simpson, Chris [Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF (United Kingdom); Shimasaku, Kazuhiro; Nakajima, Kimihiko [Department of Astronomy, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Akiyama, Masayuki [Astronomical Institute, Tohoku University, Aoba-ku, Sendai 980-8578 (Japan); Mori, Masao; Umemura, Masayuki, E-mail: yuma@icrr.u-tokyo.ac.jp [Center for Computational Science, University of Tsukuba, Tsukuba, Ibaraki 305-8577 (Japan)

    2013-12-10

    We present the first systematic search for extended metal-line [O II] ??3726, 3729 nebulae, or [O II] blobs (O IIBs), at z = 1.2 using deep narrowband imaging with a survey volume of 1.9 × 10{sup 5} Mpc{sup 3} on the 0.62 deg{sup 2} sky of Subaru-XMM Deep Survey (SXDS) field. We discover a giant O IIB, called 'O IIB 1', with a spatial extent over ?75 kpc at a spectroscopic redshift of z = 1.18, and also identify a total of 12 O IIBs with a size of >30 kpc. Our optical spectrum of O IIB 1 presents [Ne V] ?3426 line at the 6? level, indicating that this object harbors an obscured type-2 active galactic nucleus (AGN). The presence of gas outflows in this object is suggested by two marginal detections of Fe II ?2587 absorption and Fe II* ?2613 emission lines both of which are blueshifted at as large as 500-600 km s{sup –1}, indicating that the heating source of O IIB 1 is AGN or associated shock excitation rather than supernovae produced by starbursts. The number density of O IIB 1-type giant blobs is estimated to be ?5 × 10{sup –6} Mpc{sup –3} at z ? 1.2, which is comparable with that of AGNs driving outflow at a similar redshift, suggesting that giant O IIBs are produced only by AGN activity. On the other hand, the number density of small O IIBs, 6 × 10{sup –5} Mpc{sup –3}, compared to that of z ? 1 galaxies in the blue cloud in the same M{sub B} range, may imply that 3% of star-forming galaxies at z ? 1 are quenching star formation through outflows involving extended [O II] emission.

  16. An evaluation of the relationships between the lovers in John Keats's "Lamia," "Isabella," and "The Eve of St. Agnes 

    E-Print Network [OSTI]

    Westbrook, Sara Welch

    1973-01-01

    's "Lamia, " "Isabella, " and "The Eve of St. Agnes" (August 1973) Sara Welch Westbrook, B. A. , Baylor University Directed by: Dr. Parks C. Hunter, Jr. An examination of Keats's three poems in the light of selected criteria, elements of courtly love..., reveals his development in his treatment of the love relationships in each poem. These elements which are attributed to the Provengal period of courtly love include the lover (who is the singer, the vassal, and the poet); the lady (who embodies...

  17. Numerical Modeling of AGN Jets: Formation of Magnetically Dominated Lobes and Stability Properties of Current-carrying Jets

    E-Print Network [OSTI]

    Masanori Nakamura; Hui Li; Steven Diehl; Shengtai Li

    2007-07-10

    We argue the behavior of Poynting flux-dominated outflows from AGN in the galactic cluster systems by performing three-dimensional MHD simulations within the framework of the "magnetic tower" model. Of particular interests are the structure of MHD waves, the cylindrical radial force balance, the (de)collimation, and the stability properties of magnetic tower jets. Transition between the jet/lobe and the formation of wiggling jet by growing current-driven instability are discussed.

  18. Lecture Notes in Statistical Mechanics and Mesoscopics

    E-Print Network [OSTI]

    Doron Cohen

    2012-07-19

    These are the lecture notes for quantum and statistical mechanics courses that are given by DC at Ben-Gurion University. They are complementary to "Lecture Notes in Quantum Mechanics" [arXiv: quant-ph/0605180]. Some additional topics are covered, including: introduction to master equations; non-equilibrium processes; fluctuation theorems; linear response theory; adiabatic transport; the Kubo formalism; and the scattering approach to mesoscopics.

  19. Discovery of Water Maser Emission in Eight AGN with 70-m Antennas of NASA's Deep Space Network

    E-Print Network [OSTI]

    P. T. Kondratko; L. J. Greenhill; J. M. Moran; J. E. J. Lovell; T. B. H. Kuiper; D. L. Jauncey; L. B. Cameron; J. F. Gomez; C. Garcia-Miro; E. Moll; I. de Gregorio-Monsalvo; E. Jimenez-Bailon

    2005-10-31

    We report the discovery of water maser emission in eight active galactic nuclei (AGN) with the 70-m NASA Deep Space Network (DSN) antennas at Tidbinbilla, Australia and Robledo, Spain. The positions of the newly discovered masers, measured with the VLA, are consistent with the optical positions of the host nuclei to within 1 sigma (0.3 arcsec radio and 1.3 arcsec optical) and most likely mark the locations of the embedded central engines. The spectra of two sources, NGC 3393 and NGC 5495, display the characteristic spectral signature of emission from an edge-on accretion disk, with orbital velocities of ~600 and ~400 km s^-1, respectively. In a survey with DSN facilities of 630 AGN selected from the NASA Extragalactic Database, we have discovered a total of 15 water maser sources. The resulting incidence rate of maser emission among nearby (v_sys < 7000 km s^-1) Seyfert 1.8-2.0 and LINER systems is ~10 percent for a typical rms noise level of ~14 mJy over 1.3 km s^-1 spectral channels. As a result of this work, the number of nearby AGN (v_sys < 7000 km s^-1) observed with <20 mJy rms noise has increased from 130 to 449.

  20. Is radio jet power linearly proportional to the product of central black hole mass and Eddington ratio in AGN?

    E-Print Network [OSTI]

    Liu, Xiang

    2014-01-01

    A model for the relation between radio jet power and the product of central black hole (BH) mass and Eddington ratio of AGN is proposed, and the model is examined with data from the literature. We find that radio jet power positively correlates but not linearly with the product of BH mass ($m$ in solar mass) and Eddington ratio ($\\lambda$), and the power law indices ($\\mu$) are significantly less than unity for relatively low accretion ($\\lambda<0.1$) AGN, $P_{j}\\propto (\\lambda m)^{\\mu}$, in the radio galaxies and the Seyfert galaxies. This leads to a negative correlation between radio loudness and $\\lambda m$ for the low luminosity AGN, i.e. $R\\propto (\\lambda m)^{\\rho}$ with $\\rho=(7/6)\\mu-1<0$, which may be attributed to a contribution of BH spin to total jet power assuming that the spin induced jet is gradually suppressed as the accretion rate increases. Whereas, for the high-z quasars which often show the slope $\\mu\\geq1$, a positive correlation between the radio loudness and disc luminosity is pr...

  1. A pilot study of the radio-emitting AGN population: the emerging new class of FR0 radio-galaxies

    E-Print Network [OSTI]

    Baldi, Ranieri D; Giovannini, Gabriele

    2015-01-01

    We present the results of a pilot JVLA project aimed at studying the bulk of the radio-emitting AGN population, unveiled by the NVSS/FIRST and SDSS surveys.We obtained A-array observations at the JVLA at 1.4, 4.5, and 7.5 GHz for 12 sources of the SDSS/NVSS sample. The radio maps reveal compact unresolved or slightly resolved radio structures on a scale of 1-3 kpc, with only one exception of a FRI/FRII source extended over $\\sim$40 kpc. We isolate the radio core component in most of them. The sample splits into two groups. Four sources have small black hole (BH) masses (mostly $\\sim$10$^{7}$ M$_{\\odot}$) and are hosted by blue galaxies, often showing evidence of a contamination from star formation to their radio emission and associated with radio-quiet AGN. The second group consists in seven radio-loud AGN, which live in red massive ($\\sim10^{11}$ M$_{\\odot}$) early-type galaxies, with large BH masses ($\\gtrsim$10$^{8}$ M$_{\\odot}$), and spectroscopically classified as Low Excitation Galaxies, all characteris...

  2. Internal shim

    DOE Patents [OSTI]

    Barth, Clyde H.; Blizinski, Theodore W.

    2003-05-13

    An internal shim used to accurately measure spaces in conjunction with a standard small probe has a shim top and a chassis. The internal shim is adjustably fixed within the space to be measured using grippers that emerge from the chassis and which are controlled by an arm pivotably attached to the shim top. A standard small probe passes through the shim along guides on the chassis and measures the distance between the exterior of the chassis and the boundary. By summing the measurements on each side of the chassis and the width of the chassis, the dimension of the space can be determined to within 0.001 inches.

  3. AGN feedback in action: a new powerful wind in 1SXPSJ050819.8+172149

    E-Print Network [OSTI]

    Ballo, L; Braito, V; Campana, S; Della Ceca, R; Moretti, A; Vignali, C

    2015-01-01

    Galaxy merging is widely accepted to be a key driving factor in galaxy formation and evolution, while the feedback from AGN is thought to regulate the BH-bulge coevolution and the star formation process. In this context, we focused on 1SXPSJ050819.8+172149, a local (z=0.0175) Seyfert 1.9 galaxy (L_bol~4x10^43 ergs/s). The source belongs to an IR-luminous interacting pair of galaxies, characterized by a luminosity for the whole system (due to the combination of star formation and accretion) of log(L_IR/L_sun)=11.2. We present the first detailed description of the 0.3-10keV spectrum of 1SXPSJ050819.8+172149, monitored by Swift with 9 pointings performed in less than 1 month. The X-ray emission of 1SXPSJ050819.8+172149 is analysed by combining all the Swift pointings, for a total of ~72ks XRT net exposure. The averaged Swift-BAT spectrum from the 70-month survey is also analysed. The slope of the continuum is ~1.8, with an intrinsic column density NH~2.4x10^22 cm-2, and a deabsorbed luminosity L(2-10keV)~4x10^42...

  4. Cosmic star formation history and AGN evolution near and far: from AKARI to SPICA

    E-Print Network [OSTI]

    Goto, Tomotsugu; Matsuhara, Hideo

    2015-01-01

    Infrared (IR) luminosity is fundamental to understanding the cosmic star formation history and AGN evolution, since their most intense stages are often obscured by dust. Japanese infrared satellite, AKARI, provided unique data sets to probe these both at low and high redshifts. The AKARI performed an all sky survey in 6 IR bands (9, 18, 65, 90, 140, and 160$\\mu$m) with 3-10 times better sensitivity than IRAS, covering the crucial far-IR wavelengths across the peak of the dust emission. Combined with a better spatial resolution, AKARI can measure the total infrared luminosity ($L_{TIR}$) of individual galaxies much more precisely, and thus, the total infrared luminosity density of the local Universe. In the AKARI NEP deep field, we construct restframe 8$\\mu$m, 12$\\mu$m, and total infrared (TIR) luminosity functions (LFs) at 0.15$

  5. Cosmic star formation history and AGN evolution near and far: AKARI reveals both

    E-Print Network [OSTI]

    Goto, Tomotsugu

    2015-01-01

    Understanding infrared (IR) luminosity is fundamental to understanding the cosmic star formation history and AGN evolution, since their most intense stages are often obscured by dust. Japanese infrared satellite, AKARI, provided unique data sets to probe this both at low and high redshifts. The AKARI performed all sky survey in 6 IR bands (9, 18, 65, 90, 140, and 160$\\mu$m) with 3-10 times better sensitivity than IRAS, covering the crucial far-IR wavelengths across the peak of the dust emission. Combined with a better spatial resolution, AKARI can much more precisely measure the total infrared luminosity ($L_{TIR}$) of individual galaxies, and thus, the total infrared luminosity density of the local Universe. In the AKARI NEP deep field, we construct restframe 8$\\mu$m, 12$\\mu$m, and total infrared (TIR) luminosity functions (LFs) at 0.15$

  6. A View through Faraday's Fog 2: Parsec Scale Rotation Measures in 40 AGN

    E-Print Network [OSTI]

    R. T. Zavala; G. B. Taylor

    2004-05-27

    Results from a survey of the parsec scale Faraday rotation measure properties for 40 quasars, radio galaxies and BL Lac objects are presented. Core rotation measures for quasars vary from approximately 500 to several thousand radians per meter squared. Quasar jets have rotation measures which are typically 500 radians per meter squared or less. The cores and jets of the BL Lac objects have rotation measures similar to those found in quasar jets. The jets of radio galaxies exhibit a range of rotation measures from a few hundred radians per meter squared to almost 10,000 radians per meter squared for the jet of M87. Radio galaxy cores are generally depolarized, and only one of four radio galaxies (3C-120) has a detectable rotation measure in the core. Several potential identities for the foreground Faraday screen are considered and we believe the most promising candidate for all the AGN types considered is a screen in close proximity to the jet. This constrains the path length to approximately 10 parsecs, and magnetic field strengths of approximately 1 microGauss can account for the observed rotation measures. For 27 out of 34 quasars and BL Lacs their optically thick cores have good agreement to a lambda squared law. This requires the different tau = 1 surfaces to have the same intrinsic polarization angle independent of frequency and distance from the black hole.

  7. Kinematic signatures of AGN feedback in moderately powerful radio galaxies at z~2 observed with SINFONI

    E-Print Network [OSTI]

    Collet, C; De Breuck, C; Lehnert, M D; Best, P; Bryant, J J; Hunstead, R; Dicken, D; Johnston, H

    2015-01-01

    Most successful galaxy formation scenarios now postulate that the intense star formation in massive, high-redshift galaxies during their major growth period was truncated when powerful AGNs launched galaxy-wide outflows of gas that removed large parts of the interstellar medium. The most powerful radio galaxies at z~2 show clear signatures of such winds, but are too rare to be good representatives of a generic phase in the evolution of all massive galaxies at high redshift. Here we present SINFONI imaging spectroscopy of 12 radio galaxies at z~2 that are intermediate between the most powerful radio and vigorous starburst galaxies in radio power, and common enough to represent a generic phase in the early evolution of massive galaxies. The kinematic properties are diverse, with regular velocity gradients with amplitudes of Delta v=200-400 km s^-1 as in rotating disks as well as irregular kinematics with multiple velocity jumps of a few 100 km s^-1. Line widths are generally high, typically around FWHM=800 km s...

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

    E-Print Network [OSTI]

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

    2009-01-01

    Over the course of two flights, the Balloon-borne Large Aperture Submillimeter Telescope (BLAST) made resolved maps of seven nearby (<25 Mpc) galaxies at 250, 350, and 500 microns. During its June 2005 flight from Sweden (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...

  9. The largest Swift AGN monitoring campaign: UV/optical variability in NGC 5548

    E-Print Network [OSTI]

    Connolly, S D; Cameron, D T; Dwelly, T; Lira, P; Emmanoulopoulos, D; Gelbord, J; Breedt, E; Arevalo, P; Uttley, P

    2015-01-01

    We report on the largest Swift AGN monitoring program, concerning UV/optical variability in Seyferts. From 554 observations, over a 750d period, of the Seyfert galaxy NGC 5548, we see (McHardy et al. 2014) a good overall correlation between the X-ray and UV/optical bands,particularly on short timescales (tens of days). The UVOT bands are found to lag behind X-rays with a lag scaling as wavelength to the power 1.23 +/- 0.31, in excellent agreement with that expected (1.33) if UV/optical variability arises from reprocessing of X-rays by the accretion disc. However, the observed lags are ~3 times longer than expected from a standard Shakura-Sunyaev disc, raising real concerns about the detailed validity of this model. The results can be explained with a slightly larger mass and accretion rate, and a hotter disc, or if the disc is clumpy, thereby enhancing the emission from the outer regions.

  10. International Cooperation

    E-Print Network [OSTI]

    Banbara, Mutsunori

    , climate change, civil wars, nuclear disasters, and so on. We must examine these issues from an inter, Political Science, International Relations and Educational Development to address these complicated issues/Law and Development, and Politics and Area Studies. The curriculum in each Program is designed to offer opportunities

  11. 2004 Notes2Providers.doc -1-Notes to Retail Providers

    E-Print Network [OSTI]

    with the meter data reported to the system operator (Retail providers that purchase electricity from a power pool2004 Notes2Providers.doc -1- Notes to Retail Providers February 2005 Power Source Disclosure than the California Mix, (Net System Power)i . As a retail provider you are probably aware that all

  12. Android Notes These notes accompany paper ,,Storage-aware Smartphone Energy

    E-Print Network [OSTI]

    Zhou, Gang

    Android Notes These notes accompany paper ,,Storage-aware Smartphone Energy Savings", ACM Ubi somehow! Feel free to distribute them as you like. #12;Android SDK · Run Android emulator in Eclipse · Install Android Platform (Android SDK Manager) · Create an AVD (Android Virtual Device) Create Android

  13. Notes 10. The dynamic vibration absorber 

    E-Print Network [OSTI]

    San Andres, Luis

    2008-01-01

    system should be such that: TUNED ABSORBER ? X ? np = also known as a For example, if zero amplitude vibration is desired for excitations at the natural frequency of the original system, the designer selects A vibration absorber is a mechanical device... stream_source_info Notes_Vibration_Absorber_2008.pdf.txt stream_content_type text/plain stream_size 10660 Content-Encoding ISO-8859-1 stream_name Notes_Vibration_Absorber_2008.pdf.txt Content-Type text/plain; charset=ISO-8859...

  14. The Host Galaxy and Central Engine of the Dwarf AGN POX 52

    E-Print Network [OSTI]

    C. E. Thornton; A. J. Barth; L. C. Ho; R. E. Rutledge; J. E. Greene

    2008-07-09

    We present new multi-wavelength observations of the dwarf Seyfert 1 galaxy POX 52 in order to investigate the properties of the host galaxy and the active nucleus, and to examine the mass of its black hole, previously estimated to be ~ 10^5 M_sun. Hubble Space Telescope ACS/HRC images show that the host galaxy has a dwarf elliptical morphology (M_I = -18.4 mag, Sersic index n = 4.3) with no detected disk component or spiral structure, confirming previous results from ground-based imaging. X-ray observations from both Chandra and XMM show strong (factor of 2) variability over timescales as short as 500 s, as well as a dramatic decrease in the absorbing column density over a 9 month period. We attribute this change to a partial covering absorber, with a 94% covering fraction and N_H = 58^{+8.4}_{-9.2} * 10^21 cm^-2, that moved out of the line of sight in between the XMM and Chandra observations. Combining these data with observations from the VLA, Spitzer, and archival data from 2MASS and GALEX, we examine the spectral energy distribution (SED) of the active nucleus. Its shape is broadly similar to typical radio-quiet quasar SEDs, despite the very low bolometric luminosity of L_bol = 1.3 * 10^43 ergs/s. Finally, we compare black hole mass estimators including methods based on X-ray variability, and optical scaling relations using the broad H-beta line width and AGN continuum luminosity, finding a range of black hole mass from all methods to be M_bh = (2.2-4.2) * 10^5 M_sun, with an Eddington ratio of L_bol/L_edd = 0.2-0.5.

  15. The 60-micron extragalactic background radiation intensity, dust-enshrouded AGNs and the assembly of groups and clusters of galaxies

    E-Print Network [OSTI]

    Andrew W. Blain; Tom Phillips

    2002-04-19

    Submillimetre observations reveal a cosmologically significant population of high-redshift dust-enshrouded galaxies. The form of evolution inferred for this population can be reconciled easily with COBE FIRAS and DIRBE measurements of the cosmic background radiation (CBR) at wavelengths >100 microns. At shorter wavelengths, however, the 60-micron CBR intensity reported by Finkbeiner et al. is less easily accounted for. Lagache et al. have proposed that this excess CBR emission is a warm Galactic component, and the detection of the highest-energy gamma-rays from blazars limits the CBR intensity at these wavelengths, but here we investigate sources of this excess CBR emission, assuming that it has a genuine extragalactic origin. We propose and test three explanations, each involving additional populations not readily detected in existing submm-wave surveys. First, dust-enshrouded galaxies with hot dust temperatures, perhaps dust-enshrouded, Compton-thick AGN as suggested by recent deep Chandra surveys. Secondly, a population of relatively low-redshift dusty galaxies with SEDs more typical of the existing submm-selected galaxies, which could plausibly be associated with the assembly of groups and clusters of galaxies. Thirdly, a population of low-luminosity, cool, quiescent spiral galaxies. Hot AGN and the assembly of groups can account for the excess 60-micron background. There are significant problems with the cluster assembly scenario, in which too many bright IRAS sources are predicted. Spiral galaxies have the wrong SEDs to account for the excess. Future wide-field far-IR surveys using SIRTF and Herschel will sample representative volumes of the distant Universe, allowing any hot population of dusty AGNs and forming groups to be detected.

  16. Nukes (notes on PFFP) Chain reactions

    E-Print Network [OSTI]

    Browder, Tom

    weapons and nuclear power reactors. #12;Chain reactions in nuclear fission bomb Note the number = 8, 2 x 2 x 2 x 2 =16.....210=1024, ......264~1019 Will discuss and compare some aspects of nuclear that can be created in nuclear reactors. Z=94, A =239 There are 94 protons and 145 neutrons in Pu-239

  17. Technical Note Graphene: Substrate preparation and introduction

    E-Print Network [OSTI]

    Technical Note Graphene: Substrate preparation and introduction Radosav S. Pantelic a , Ji Won Suk September 2010 Accepted 4 October 2010 Available online xxxx Keywords: Graphene Graphene oxide Cryo the transfer of continuous, single-layer, pristine graphene to standard Quan- tifoil TEM grids. We compare

  18. Technical Note Methane gas migration through geomembranes

    E-Print Network [OSTI]

    PROOFS Technical Note Methane gas migration through geomembranes T. D. Stark1 and H. Choi2 1 flexible geomembranes, and to measure the methane gas transmission rate, permeance, and permeability). The measured methane gas permeability coefficient through a PVC geomembrane is 7.55 3 104 ml(STP).mil/m2.day

  19. A note on H structures Tyler Lawson

    E-Print Network [OSTI]

    Lawson, Tyler

    A note on H structures Tyler Lawson February 7, 2014 Abstract We give a source of (coconnective) examples of H structures that do not lift to E structures, based on Mandell's proof of the equiva- lence to a structure on its cochains which is not commutative, but associative and commutative up to higher coherences

  20. GEOLOGIC NOTE A simple model of gas

    E-Print Network [OSTI]

    Patzek, Tadeusz W.

    GEOLOGIC NOTE A simple model of gas production from hydrofractured horizontal wells in shales Tad Patzek, Frank Male, and Michael Marder ABSTRACT Assessing the production potential of shale gas can a nonlinear initial boundary value problem for transient flow of real gas that may sorb on the rock and solve

  1. Briefing Note 2011 29 4 February 2011

    E-Print Network [OSTI]

    Pedersen, Tom

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

  2. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    THE RADIOFREQUENCY SYSTEM FOR DANE: FIRST REMARKS R. Boni, A. Gallo INTRODUCTION This note presents some considerations on the Radiofrequency System (RFS) for DANE. It is worthed to mention that the RFS has to supply to the beams the energy lost by synchrotron radiation and parasitic losses. We propose two different solutions

  3. Lecture notes Introductory incompressible fluid mechanics

    E-Print Network [OSTI]

    Malham, Simon J.A.

    Lecture notes Introductory incompressible fluid mechanics Simon J.A. Malham Simon J.A. Malham (23rd of fluid mechanics and along the way see lots of interesting applications. 2 Fluid flow, the Continuum. Liquids are generally incompressible--a feature essential to all modern car braking mechanisms. Fluids can

  4. 203-HJT-0611 UNLESS OTHERWISE NOTED

    E-Print Network [OSTI]

    McDonald, Kirk

    WELDS SHALL BE WITH ASME SECTION IX. NO CODE STAMP REQUIRED. 1. WELDING SHALL BE PERFORMED IN ACCORDANCE DIMENSIONS AND TOLERANCES PER ASME Y14.5M 3. MACHINED FINISH 125 MICRO- INCHES RMS 4. CONCENTRICITY .010 TIR.850 2.4 .9 2.850 .900 .975 1.20 NOTES 1. WELDING SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX

  5. UNLESS OTHERWISE NOTED 203-HJT-0611

    E-Print Network [OSTI]

    McDonald, Kirk

    WITH ASME SECTION IX. NO CODE STAMP REQUIRED. 2. NO RADIOGRAPHY REQUIRED. ALL WELDS SHALL BE DYE PENETRANT.349 NOTES 1. WELDING SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX. NO CODE STAMP REQUIRED. 2 AND TOLERANCES PER ASME Y14.5M 3. MACHINED FINISH 125 MICRO- INCHES RMS 4. CONCENTRICITY .010 TIR 5. MACHINED

  6. UNLESS OTHERWISE NOTED 203-HJT-0620A

    E-Print Network [OSTI]

    McDonald, Kirk

    .928 2.298 NOTES 1. WELDING AND INSPECTION SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX. NO CODE ASME Y14.5M 3. MACHINED FINISH 125 MICRO- INCHES RMS 4. CONCENTRICITY .010 TIR 5. MACHINED ANGLES 1 INSPECTION REQUIRED. 2. NUMBER OF PIPE BUTT WELDS SHOULD BE MINIMIZED. NO CODE STAMP REQUIRED. IN ACCORDANCE

  7. Note on Integer Factoring Algorithms II

    E-Print Network [OSTI]

    N. A. Carella

    2007-02-08

    This note introduces a new class of integer factoring algorithms. Two versions of this method will be described, deterministic and probabilistic. These algorithms are practical, and can factor large classes of balanced integers N = pq, p < q < 2p in superpolynomial time. Further, an extension of the Fermat factoring method is proposed.

  8. 221B Lecture Notes Relativistic Quantum Mechanics

    E-Print Network [OSTI]

    Murayama, Hitoshi

    221B Lecture Notes Relativistic Quantum Mechanics 1 Need for Relativistic Quantum Mechanics We r + dx 1 8 (E2 + B2 ). (1) (Coulomb potential is there only if there is another static charged, similarly to the Newton's equation of motion in mechanics. The initial condtions to solve the Newton

  9. 129 Lecture Notes Relativistic Quantum Mechanics

    E-Print Network [OSTI]

    Murayama, Hitoshi

    129 Lecture Notes Relativistic Quantum Mechanics 1 Need for Relativistic Quantum Mechanics2 ). (1) (Coulomb potential is there only if there is another static charged particle's equation of motion in mechanics. The initial condtions to solve the Newton's equation of motion

  10. 221B Lecture Notes Relativistic Quantum Mechanics

    E-Print Network [OSTI]

    Murayama, Hitoshi

    221B Lecture Notes Relativistic Quantum Mechanics 1 Need for Relativistic Quantum Mechanics We r + dx 1 8 (E2 + B2 ). (1) (Coulomb potential is there only if there is another static charged's equation of motion in mechanics. The initial condtions to solve the Newton's equation of motion

  11. Food Stories Exhibition Trail Leader's Notes

    E-Print Network [OSTI]

    Neri, Peter

    Food Stories Exhibition Trail Leader's Notes 1. Take a look at the stone fragment. Where do you a story about a celebration involving food? (No answer required) 3. This is a food hook from Papua New of grass, palm leaves and bamboo. The food hook would hang from the ceiling of the hut. Why do you think

  12. 221A Miscellaneous Notes Continuity Equation

    E-Print Network [OSTI]

    Murayama, Hitoshi

    221A Miscellaneous Notes Continuity Equation 1 The Continuity Equation As I received questions equation. It appears in Sakurai, pp. 101­102, but he does not go into the general discussions about what is meant by the one of the most famous equations in physics (Sakurai (2.4.15)), t + · = 0, (1) called

  13. Linear Algebra Notes David A. SANTOS

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Linear Algebra Notes David A. SANTOS dsantos@ccp.edu January 2, 2010 REVISION #12;ii Contents . . . . . . . . . . . . . . . . . . 15 2 Matrices and Matrix Operations 18 2.1 The Algebra of Matrices . . . . . . . . . . . 18 2.3 Diagonalisability . . . . . . . . . . . . . . 143 7.4 Theorem of Cayley and Hamilton . . . . . 147 8 Linear Algebra

  14. Data Mining and Knowledge Discovery: Practice Notes

    E-Print Network [OSTI]

    Novak, Petra Kralj

    1 Data Mining and Knowledge Discovery: Practice Notes dr. Petra Kralj Novak Petra.Kralj.Novak@ijs.si and exam · 2013/12/16: Written exam, seminar proposal discussion · 2014/1/8: Data mining seminar gain becomes the root 7. Divide the set S into subsets Si according to the values of A 8. Repeat steps

  15. Color Systems 1 Notes and Remarks

    E-Print Network [OSTI]

    de Figueiredo, Luiz Henrique

    Chapter 4 Color Systems 1 Notes and Remarks 1.0.1 A Remark on the Chapter This chapter contains standard material about color systems. A great part of the chapter is found on the current books. An exception is the covering of the chrominance-luminance color systems. The reader should also notive

  16. INTERNATIONAL AGREEMENTS

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRD Report11,SecurityHome . Form D-4-AILE:Falls - TheINTERNATIONAL

  17. Internal Resources

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIsProcess RelevantInternal AuditDrawings/Photos | Links

  18. International Fellows

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIsProcessRegulation InternationalAlexander and Lienert

  19. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIsProcessRegulation InternationalAlexander and2

  20. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIsProcessRegulation International NuclearChallenges

  1. International Conference

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenryInhibitingInteractive Jobs Interactive JobsInterlibraryInternalA

  2. Office of International Education International Student & Scholar Immigration Services

    E-Print Network [OSTI]

    Arnold, Jonathan

    Office of International Education International Student & Scholar Immigration Services Policies-2015 International Student, Scholar and Immigration Services (ISSIS) within the Office of International Education of International Education when immigration services related to international scholars, interns, faculty

  3. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 ACIT Meeting Notes Advisory Committee for Information Technology Meeting Notes MEETING DATE: 3 and trusted source. Maintain a web site dedicated to informing users of what is legitimate and what isn

  4. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 ACIT Meeting Notes Advisory Committee for Information Technology Meeting Notes MEETING DATE: 10 in ITS can provide information on access to this software. UCPath update [M. Cianca/L. Eppler] We are one

  5. The ionization mechanism of the extended gas in high redshift radio galaxies:shocks or AGN photoionization?

    E-Print Network [OSTI]

    M. Villar-Martin; C. N. Tadhunter; N. E. Clark

    1997-01-06

    We have compared the UV line ratios of a sample of very high redshift radio galaxies with shock and AGN photoionization models, with the goal of determining the balance between jet-induced shocks and AGN illumination in the extended emission line regions. We find that the UV line ratios cannot be explained in terms of photoionization of solar abundance gas by the classical power law of index $\\alpha=$-1.5, which successfully reproduces the general trends defined by the optical line ratios of low redshift radio galaxies. Pure shock models also provide a poor fit to the data. However, photoionization by a power law of index -1.0 provides an excellent fit to the UV line ratios. This suggests that the ionizing continuum spectral shape may depend on radio luminosity and/or redshift, such that it becomes harder as the radio power and/or redshift increase. However, an alternative possibility is that we are seeing the first signs of chemical evolution in these objects, since a power-law of index -1.5 with low metallicity also provides a good fit to the data. We further show that the UV line ratios provide a sensitive test of the ionization mechanism for the lower ionization conditions prevalent in some low redshift jet-cloud interaction candidates.

  6. E Notes G. Sasaki, Univ. Hawaii 1 Digital Circuits Review

    E-Print Network [OSTI]

    Sasaki, Galen H.

    E Notes G. Sasaki, Univ. Hawaii 1 Digital Circuits Review Combinational Circuits: No memory Output and current state Next state is dependent on input and current state E Notes G. Sasaki, Univ. Hawaii 2 Timing Diagram Boolean Expressions Hardware Description Languages #12;E Notes G. Sasaki, Univ. Hawaii 3

  7. EndNote X6 Basics For Windows

    E-Print Network [OSTI]

    will need to choose between two installation types ­ Typical or Custom. If you choose Typical, you EndNote: Opening or creating an EndNote Library Adding bibliographic references or citations to your library Using EndNote with Microsoft Word to organize research papers, insert references using Cite While

  8. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 ACIT Meeting Notes Advisory Committee for Information Technology Meeting Notes MEETING DATE: 4 is starting analysis on benefit information and position data, which is where the UCOP PMO thought there would://orcid.org/about/what-is-orcid). Information Security/Privacy report [J. Roeth] Please see report and presentation notes following

  9. Nolij Corporation Proprietary & Confidential Information Release Notes for Nolij Web

    E-Print Network [OSTI]

    Escher, Christine

    Nolij Corporation Proprietary & Confidential Information Release Notes for Nolij Web Release 6.3.x Web Release 6.3.x Copyright © 2010 - 2011, Nolij Corporation. All rights reserved. Revised 02Release Notes for Nolij Web Release 6.3.x Introduction These release notes provide information about new

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

    SciTech Connect (OSTI)

    1996-03-01

    `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.

  11. LLW notes. Volume 11, No.8

    SciTech Connect (OSTI)

    NONE

    1996-12-01

    `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.

  12. For building and construction. Technical notes

    SciTech Connect (OSTI)

    Bansal, G.D.; Sharma, D.; Prakash, C.; Rao, K.R.; Jain, S.P.

    1981-01-01

    Sixteen technical notes are compiled coveering: Apertures other than Northlights; Design of pile caps; thermal insulation of roofs of industrial buildings; room heating by solar energy; charging device for small capacity lime kilns; waste water disposal system for rural areas; low cost sound absorbing materials; solar space heating system; pedestal piles for low cost houses; solar timber seasoning kiln; design of cold storage for fruits and vegetables; techniques for improved thatch roofs; resilient floors for structural noise reduction; plastic composite panels for partition claddings and flush doors; chimney design for domestic kitchens; and a cheap and effective fire retardant treatment for paddy thatch/coconut leaves/palmyrah thatch. The notes give brief descriptions of the design and use of the materials and techniques covered.

  13. Herwig++ 2.0 beta release note.

    E-Print Network [OSTI]

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

    ar X iv :h ep -p h/ 06 02 06 9v 1 8 F eb 2 00 6 Cavendish-HEP-06/05 CERN-PH-TH/2006-021 IFJPAN-IV-2006-2 IPPP/06/09 KA-TP-02-2006 February 2006 Herwig++ 2.0? Release Note S. Gieseke Institute fu¨r Theoretische Physik, Karlsruhe E-mail: gieseke@particle.uni-karlsruhe.de...

  14. Notes 16. Analysis of tilting pad bearings 

    E-Print Network [OSTI]

    San Andres, Luis

    2010-01-01

    affecting tilting pad bearing force coefficients include elastic deformation of the bearing pads and pivots, thermal effects affecting the lubricant viscosity and film clearance, etc. [2,3]. ? Pad Pivot Journal Y X ? Journal speed NOTES 16... is assumed rigid. Journal motion perturbation analysis The bearing supports a static load with components { } YoXo WW , . At speed ?, the static load determines operation with the journal at its static equilibrium position ( YoXo ee ,). At equilibrium...

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

    E-Print Network [OSTI]

    Bureau, Martin

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

  16. The Regulation of Cooling and Star Formation in Luminous Galaxies by AGN Feedback and the Cooling-Time/Entropy Threshold for the Onset of Star Formation

    E-Print Network [OSTI]

    David Rafferty; Brian McNamara; Paul Nulsen

    2008-06-11

    Using broadband optical imaging and Chandra X-ray data for a sample of 46 cluster central dominant galaxies (CDGs), we investigate the connection between star formation, the intracluster medium (ICM), and the central active galactic nucleus (AGN). We report the discovery of a remarkably sharp threshold for the onset of star formation that occurs when the central cooling time of the hot atmosphere falls below ~ 5x10^8 yr, or equivalently when the central entropy falls below ~ 30 keV cm^2. In addition to this criterion, star formation in cooling flows also appears to require that the X-ray and galaxy centroids lie within ~ 20 kpc of each other, and that the jet (cavity) power is smaller than the X-ray cooling luminosity. These three criteria, together with the high ratio of cooling time to AGN outburst (cavity) age across our sample, directly link the presence of star formation and AGN activity in CDGs to cooling instabilities in the intracluster plasma. Our results provide compelling evidence that AGN feedback into the hot ICM is largely responsible for regulating cooling and star formation in the cores of clusters, leading to the significant growth of supermassive black holes in CDGs at late times.

  17. The Origin of UV-optical Variability in AGN and Test of Disc Models: XMM-Newton and ground based observations of NGC4395

    E-Print Network [OSTI]

    McHardy, Ian; Peterson, Brad; Bieryla, Allyson; Chand, Hum; Elvis, Martin; Emmanoulopoulos, Dimitrios; Falco, Emilio; Gandhi, Poshak; Kaspi, Shai; Latham, David; Lira, Paulina; McCully, Curtis; Netzer, Hagai; Uemura, Makoto

    2016-01-01

    The origin of short timescale (weeks/months) variability of AGN, whether due to intrinsic disc variations or reprocessing of X-ray emission by a surrounding accretion disc, has been a puzzle for many years. However recently a number of observational programmes, particularly of NGC5548 with Swift, have shown that the UV/optical variations lag behind the X-ray variations in a manner strongly supportive of X-ray reprocessing. Somewhat surprisingly the implied size of the accretion disc is ~3x greater than expected from a standard, smooth, Shakura-Sunyaev thin disc model. Although the difference may be explained by a clumpy accretion disc, it is not clear whether the difference will occur in all AGN or whether it may change as, eg, a function of black hole mass, accretion rate or disc temperature. Measurements of interband lags for most AGN require long timescale monitoring, which is hard to arrange. However for low mass (solar mass) AGN, the combination of XMM-Newton EPIC (X-rays) with the optical ...

  18. X-ray Emission in Non-AGN Galaxies at z ~ 1

    E-Print Network [OSTI]

    Chatterjee, Suchetana; Jeltema, Tesla; Myers, Adam D; Aird, James; Bundy, Kevin; Conselice, Christopher; Cooper, Michael; Laird, Elise; Nandra, Kirpal; Willmer, Christopher

    2015-01-01

    Using data from the DEEP2 galaxy redshift survey and the All Wavelength Extended Groth Strip International Survey we obtain stacked X-ray maps of galaxies at 0.7 1, we find no evidence that our results for X-ray scaling relations depend on optical color.

  19. 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

  20. 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

  1. Radio observations of the CDF-South: a possible link between radio emission and star formation in X-ray selected AGN

    E-Print Network [OSTI]

    E. Rovilos; A. Georgakakis; I. Georgantopoulos; J. Afonso; A. M. Koekemoer; B. Mobasher; C. Goudis

    2007-03-13

    We explore the nature of the radio emission of X-ray selected AGN by combining deep radio (1.4GHz; 60micro-Jy) and X-ray data with multiwavelength (optical, mid-infrared) observations in the Extended Chandra Deep Field South (E-CDFS). The fraction of radio detected X-ray sources increases from 9% in the E-CDFS to 14% in the central region of this field, which has deeper X-ray coverage from the 1Ms CDFS. We find evidence that the radio emission of up to 60% of the hard X-ray/radio matched AGN is likely associated with star-formation in the host galaxy. Firstly, the mid-IR (24micron) properties of these sources are consistent with the infrared/radio correlation of starbursts. Secondly, most of them are found in galaxies with blue rest-frame optical colours (U-V), suggesting a young stellar population. On the contrary, X-ray/radio matched AGN which are not detected in the mid-infrared have red U-V colours suggesting their radio emission is associated with AGN activity. We also find no evidence for a population of heavily obscured radio-selected AGN that are not detected in X-rays. Finally, we do no confirm previous claims for a correlation between radio emission and X-ray obscuration. Assuming that the radio continuum measures star-formation, this finding is against models where the dust and gas clouds associated with circumnuclear starbursts are spherically blocking our view to the central engine.

  2. International Programs and Services International Programs

    E-Print Network [OSTI]

    . The office is organized into three functional units-- International Education, Education Abroad in Agriculture, Natural Resources, English, and Food Science and Human Nutrition are administered through) Courses International Education (IE subject code) courses, such as World Interdependence: World Food

  3. Office of International Education International Student, Scholar, and Immigration Services

    E-Print Network [OSTI]

    Arnold, Jonathan

    Office of International Education International Student, Scholar, and Immigration Services 1324 of International Education after checking in. For the purpose of the Office of International Education, insurance

  4. HERWIG 6.1 Release Note

    E-Print Network [OSTI]

    G. Corcella; I. G. Knowles; G. Marchesini; S. Moretti; K. Odagiri; P. Richardson; M. H. Seymour; B. R. Webber

    1999-12-18

    A new version of the Monte Carlo program HERWIG (version 6.1) is now available. This note gives brief details of the new features relative to the previous version (5.9). A fully updated manual will follow shortly. The main new features are: supersymmetric processes (both R-parity conserving and R-parity violating) in hadron-hadron collisions; the new process e+e- to 4 jets; matrix element corrections to top decay and Drell-Yan processes; new soft underlying event options; updates to particle data tables; new LaTeX and html printout options.

  5. Notes on the Weierstrass Elliptic Function

    E-Print Network [OSTI]

    Alain J. Brizard

    2015-10-27

    A consistent notation for the Weierstrass elliptic function $\\wp(z;g_{2},g_{3})$, for $g_{2} > 0$ and arbitrary values of $g_{3}$ and $\\Delta \\equiv g_{2}^{3} - 27 g_{3}^{2}$, is introduced based on the parametric solution for the motion of a particle in a cubic potential. These notes provide a roadmap for the use of {\\sf Mathematica} to calculate the half-periods $(\\omega_{1},\\omega_{3},\\omega_{2} \\equiv \\omega_{1} + \\omega_{3})$ of the Weierstrass elliptic function.

  6. Property:CompletionNotes | 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 QA:QA J-E-1 SECTION J APPENDIXsourceIIInformationEnergyReportNumber Jump to:CommunicationRecipientCompletionNotes

  7. Variation of bulk Lorentz factor in AGN jets due to Compton rocket in a complex photon field

    E-Print Network [OSTI]

    Vuillaume, Thomas; Petrucci, Pierre-Olivier

    2015-01-01

    Radio-loud active galactic nuclei are among the most powerful objects in the universe. In these objects, most of the emission comes from relativistic jets getting their power from the accretion of matter onto supermassive black holes. However, despite the number of studies, a jet's acceleration to relativistic speeds is still poorly understood. It is widely known that jets contain relativistic particles that emit radiation through several physical processes, one of them being the inverse Compton scattering of photons coming from external sources. In the case of a plasma composed of electrons and positrons continuously heated by the turbulence, inverse Compton scattering can lead to relativistic bulk motions through the Compton rocket effect. We investigate this process and compute the resulting bulk Lorentz factor in the complex photon field of an AGN composed of several external photon sources. We consider various sources here: the accretion disk, the dusty torus, and the broad line region. We take their geo...

  8. International Commitments Management

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

    2008-11-18

    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.

  9. Evidence for powerful AGN winds at high redshift: Dynamics of galactic outflows in radio galaxies during the "Quasar Era"

    E-Print Network [OSTI]

    N. P. H. Nesvadba; M. D. Lehnert; C. De Breuck; A. M. Gilbert; W. van Breugel

    2008-10-13

    AGN feedback now appears as an attractive mechanism to resolve some of the outstanding problems with the "standard" cosmological models, in particular those related to massive galaxies. To directly constrain how this may influence the formation of massive galaxies near the peak in the redshift distribution of powerful quasars, z~2, we present an analysis of the emission-line kinematics of 3 powerful radio galaxies at z~2-3 (HzRGs) based on rest-frame optical integral-field spectroscopy obtained with SINFONI on the VLT. HzRGs are among the most massive galaxies, so AGN feedback may have a particularly clear signature. We find evidence for bipolar outflows in all HzRGs, with kinetic energies that are equivalent to 0.2% of the rest-mass of the supermassive black hole. Velocity offsets in the outflows are ~800-1000 km s^-1 between the blueshifted and redshifted line emission, FWHMs ~1000 km s^-1 suggest strong turbulence. Ionized gas masses estimated from the Ha luminosity are of order 10^10 M_s, similar to the molecular gas content of HzRGs, underlining that these outflows may indicate a significant phase in the evolution of the host galaxy. The total energy release of ~10^60 erg during a dynamical time of ~10^7 yrs corresponds to about the binding energy of a massive galaxy. Geometry, timescales and energy injection rates of order 10% of the kinetic energy flux of the jet suggest that the outflows are most likely driven by the radio source. The global energy density release of ~10^57 erg s^-1 Mpc^-3 may also influence the subsequent evolution of the HzRG by enhancing the entropy and pressure in the surrounding halo and facilitating ram-pressure stripping of gas in satellite galaxies that may contribute to the subsequent mass assembly of the HzRG through low-dissipation "dry" mergers.

  10. Dr. T.P. Clement CE 3010 class notes

    E-Print Network [OSTI]

    Clement, Prabhakar

    8/15/2011 1 Dr. T.P. Clement CE 3010 class notes Learning Objectives · Motivation · Basic approach value of the definite integral 2 b a dxxf )( Dr. T.P. Clement CE 3010 class notes Analytical (or exact a dxxf )( Dr. T.P. Clement CE 3010 class notes Trapezoidal Rule F(x) #12;8/15/2011 2 Dr. T.P. Clement CE

  11. 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

  12. 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...

  13. PLEASE NOTE THURSDAY DATE - COLLOQUIUM: Professor Ralph Roskies...

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

    MBG Auditorium PLEASE NOTE THURSDAY DATE - COLLOQUIUM: Professor Ralph Roskies - "Big Data at the Pittsburgh Supercomputing Center" Professor Ralph Roskies Pittsburgh...

  14. Publisher's Note: Phase effects from the general neutrino Yukawa...

    Office of Scientific and Technical Information (OSTI)

    Publisher's Note: Phase effects from the general neutrino Yukawa matrix on lepton flavor violation Phys. Rev. D 72, 055012 (2005) Citation Details In-Document Search Title:...

  15. Publisher's Note: "Chiral symmetry restoration at large chemical...

    Office of Scientific and Technical Information (OSTI)

    Publisher's Note: "Chiral symmetry restoration at large chemical potential 2 in strongly coupled SU(N) gauge theories" J. Math. Phys. 54, 122301 (2013) Citation Details...

  16. Logic in Access Control (Tutorial Notes)

    E-Print Network [OSTI]

    Ahmed, Amal

    of California, Santa Cruz Abstract. Access control is central to security in computer systems. Over the years to a tutorial given at the 2009 International School on Foundations of Security Analysis and Design. 1 provide a simple, solid, and general foundation for access control, as well as methods for designing

  17. Multiple Regression Analysis of the Variable Component in the Near-Infrared Region for Type 1 AGN MCG+08-11-011

    E-Print Network [OSTI]

    Hiroyuki Tomita; Yuzuru Yoshii; Yukiyasu Kobayashi; Takeo Minezaki; Keigo Enya; Masahiro Suganuma; Tsutomu Aoki; Shintaro Koshida; Masahiro Yamauchi

    2006-10-12

    We propose a new method of analysing a variable component for type 1 active galactic nuclei (AGNs) in the near-infrared wavelength region. This analysis uses a multiple regression technique and divides the variable component into two components originating in the accretion disk at the center of AGNs and from the dust torus that far surrounds the disk. Applying this analysis to the long-term $VHK$ monitoring data of MCG+08-11-011 that were obtained by the MAGNUM project, we found that the $(H-K)$-color temperature of the dust component is $T = 1635$K $\\pm20$K, which agrees with the sublimation temperature of dust grains, and that the time delay of $K$ to $H$ variations is $\\Delta t\\approx 6$ days, which indicates the existence of a radial temperature gradient in the dust torus. As for the disk component, we found that the power-law spectrum of $f_\

  18. DOE-EERE Durability Working Group Meeting Notes

    Broader source: Energy.gov [DOE]

    Meeting notes from the Fall 2011 Durability Working Group (DWG) Meeting sponsored by the U.S. Department of Energy (DOE) Fuel Cell Technologies Program. Notes also include a summary of progress on action items from the Spring 2011 DWG meeting.

  19. LMS SUBSCRIPTION RATES & NOTES 2014/15 SUBSCRIPTION RATES

    E-Print Network [OSTI]

    1 LMS SUBSCRIPTION RATES & NOTES 2014/15 SUBSCRIPTION RATES LMS membership subscription: £ US.00 Associate membership 16.00 32.00 Free membership (see note 2) Print only Online only Print & online* LMS, or are unemployed or otherwise in hardship. Contact membership@lms.ac.uk to enquire further. #12;LMS PUBLICATIONS 4

  20. LMS SUBSCRIPTION RATES & NOTES 2013/14 SUBSCRIPTION RATES

    E-Print Network [OSTI]

    1 LMS SUBSCRIPTION RATES & NOTES 2013/14 SUBSCRIPTION RATES LMS membership subscription: £ US.00 Associate membership 15.00 30.00 Free membership (see note 2) Print only Online only Print & online* LMS, or are unemployed or otherwise in hardship. Contact membership@lms.ac.uk to enquire further. #12;LMS PUBLICATIONS 4

  1. NIST Technical Note 1458 NIST Measurement Service for

    E-Print Network [OSTI]

    i NIST Technical Note 1458 NIST Measurement Service for DC Standard Resistors Randolph E. Elmquist for the purpose. National Institute of Standards and Technology Technical Note 1458 Natl. Inst. Stand. Technol and Electrical Engineering Laboratory National Institute of Standards and Technology Gaithersburg, MD 20899

  2. Dr. T.P. Clement CE 3010 class notes

    E-Print Network [OSTI]

    Clement, Prabhakar

    1 Dr. T.P. Clement CE 3010 class notes Quotes · Genius is 1 percent inspiration and 99 percent in little things. Excellence is not an exception, it is a prevailing attitude Colin Powell 1 Dr. T.P · Combining conditions · Loops · Examples 2 Dr. T.P. Clement CE 3010 class notes Program to Find Real Roots

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

    E-Print Network [OSTI]

    Piccoli, Benedetto

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

  4. TECHNICAL NOTES Drought Storage Allocation Rules for Surface

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    TECHNICAL NOTES Drought Storage Allocation Rules for Surface Reservoir Systems Jay R. Lund1 Abstract: This technical note develops a simple drought storage allocation rule to minimize evaporative as a function of storage in the following equation: D = d 3S ab 1/3 2 Marginal Losses In developing an operating

  5. Chemistry Safety Notes Volume 1, Issue 2 December 2013

    E-Print Network [OSTI]

    Guo, Ting

    Chemistry Safety Notes Volume 1, Issue 2 December 2013 "Chemistry Safety Notes" is published by the Chemistry Dept. Safety Committee, written & edited by Debbie Decker, Safety Mgr. EH&S Inspections EH job! However, there are some recent changes in EH&S mandates for us, with which we are not entirely

  6. Technical Note Variational free energy and the Laplace approximation

    E-Print Network [OSTI]

    Daunizeau, Jean

    Technical Note Variational free energy and the Laplace approximation Karl Friston,a, Jérémie October 2006 This note derives the variational free energy under the Laplace approximation, with a focus. This is relevant when using the free energy as an approximation to the log-evidence in Bayesian model averaging

  7. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 ACIT Meeting Notes Advisory Committee for Information Technology Meeting Notes MEETING DATE: 1 by Jan. 31. Assistive Technology, Web Accessibility Update, Input [J. Phillips] ECommons and WCMS are currently under scrutiny for electronic accessibility. Assistive Technology Committee is looking at best

  8. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 ACIT Meeting Notes Advisory Committee for Information Technology Meeting Notes MEETING DATE: 2 on proposed budget reduction actions to help inform ITS's budget planning. In general, impacts to instruction ITEMS ASSIGNED TO DELIVER BY Committee to bring information back to Deans Committee Next meeting

  9. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 ACIT Meeting Notes Advisory Committee for Information Technology Meeting Notes MEETING DATE: 1 the weeks of February 27-March 2 or March 5-9 to provide information about what is happening in ITS. Mary to use ReadyTalk to participate in the forum remotely and that Twitter be used to distribute information

  10. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

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

  11. 1 ACIT Meeting Notes Advisory Committee for Information Technology

    E-Print Network [OSTI]

    California at Santa Cruz, University of

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

  12. OPAL Supplementary Note for PR177 October 11, 1996

    E-Print Network [OSTI]

    OPAL Supplementary Note for PR177 October 11, 1996 Details of the Search for Chargino and Neutralino Production Using the OPAL Detector at p s = 161 GeV at LEP The OPAL Collaboration Abstract This is a supplementary note to the OPAL paper PR177. It provides details on the search for charginos and neutralinos

  13. Fourier-Resolved Spectroscopy of AGN using XMM-Newton data: I. The 3-10 keV band results

    E-Print Network [OSTI]

    I. E. Papadakis; Z. Ioannou; D. Kazanas

    2007-01-29

    We present the results from the Fourier Resolved Spectroscopy of archival XMM-Newton data of five AGN, namely, Mrk 766, NGC 3516, NGC 3783, NGC 4051 and Ark 564. This work supplements the earlier study of MCG-6-30-15 as well as those of several Galactic Black Hole Candidate sources. Our results exhibit much larger diversity than those of Galactic sources, a fact we attribute to the diversity of their masses. When we take into account this effect and combine our results with those from Cyg X-1, it seems reasonable to conclude that, at high frequencies, the slope of the Fourier-resolved spectra in accreting black hole systems decreases with increasing frequency as proportional to f^{-0.25}, irrespective of whether the system is in its High or Low state. This result implies that the flux variations in AGN are accompanied by complex spectral slope variations as well. We also find that the Fe Ka line in Mrk 766, NGC 3783 and NGC 4051 is variable on time scales ~day - 1 hour. The iron fluorescence line is absent in the spectra of the highest frequencies,and there is an indication that, just like in Cyg X-1, the equivalent width of the line in the Fourier-resolved of AGN decreases with increasing frequency.

  14. A Strategy to Measure the Dark Energy Equation of State using the HII galaxy Hubble Relation & X-ray AGN Clustering: Preliminary Results

    E-Print Network [OSTI]

    M. Plionis; R. Terlevich; S. Basilakos; F. Bresolin; E. Terlevich; J. Melnick; R. Chavez

    2011-06-22

    We explore the possibility of setting stringent constraints to the Dark Energy equation of state using alternative cosmic tracers like: (a) the Hubble relation using HII galaxies, which can be observed at much higher redshifts (z~3.5) than those currently traced by SNIa samples, and (b) the large-scale structure using the clustering of X-ray selected AGN,which have a redshift distribution peaking at z~1. We use extensive Monte-Carlo simulations to define the optimal strategy for the recovery of the dark-energy equation of state using the high redshift (z~2) Hubble relation, but accounting also for the effects of gravitational lensing, which for such high redshifts can significantly affect the derived cosmological constraints. Based on a "Figure of Merit" analysis, we provide estimates for the number of 2energy equation of state by using the joint likelihood of the X-ray AGN clustering and of the Hubble relation cosmological analyses. A preliminary joint analysis using the X-ray AGN clustering of the 2XMM survey and the Hubble relation of the Constitution SNIa set provide: Omega_m= 0.31+-0.01 and w=-1.06+-0.05. We also find that the joint SNIa-2XMM analysis provides significantly more stringent cosmological constraints, increasing the Figure of Merit by a factor ~2, with respect to that of the joint SNIa-BAO analysis.

  15. On the origin of soft X-rays in obscured AGN: answers from high-resolution spectroscopy with XMM-Newton

    E-Print Network [OSTI]

    Matteo Guainazzi; Stefano Bianchi

    2006-10-24

    We present results of a high-resolution soft X-ray (0.2-2 keV) spectroscopic study of a sample of 69 nearby obscured Active Galactic Nuclei (AGN) observed with the Reflection Grating Spectrometer (RGS) on board XMM-Newton. This is the largest sample ever studied with this technique so far. The main conclusions of our study can be summarized as follows: a) narrow Radiative Recombination Continua are detected in about 36% of the objects in our sample (in 26% their intrinsic width is <10 eV); b) higher order transitions are generally enhanced with respect to pure photoionization, indicating that resonant scattering plays an important role in the ionization/excitation balance. These results support the scenario, whereby the active nucleus is responsible for the X-ray ``soft excess'' almost ubiquitously observed in nearby obscured AGN via photoionization of circumnuclear gas. They confirm on a statistical basis the conclusions drawn from the detailed study of the brightest spectra in the sample. Furthermore, we propose a criterion to statistically discriminate between AGN-photoionized sources and starburst galaxies, based on intensity of the forbidden component of the OVII He-alpha triplet (once normalized to the OVIII Ly-alpha) coupled with the integrated luminosity in He-like and H-like oxygen lines.

  16. Self-regulated growth of supermassive black holes by a dual jet/heating AGN feedback mechanism: methods, tests and implications for cosmological simulations

    E-Print Network [OSTI]

    Dubois, Yohan; Slyz, Adrianne; Teyssier, Romain

    2011-01-01

    We develop a new sub-grid model for the growth of supermassive Black Holes (BHs) and their associated Active Galactic Nuclei (AGN) feedback in hydrodynamical cosmological simulations. Assuming that BHs are created in the early stages of galaxy formation, they grow by mergers and accretion of gas at a Eddington-limited Bondi accretion rate. However this growth is regulated by AGN feedback which we model using two different modes: a quasar-heating mode when accretion rates onto the BHs are comparable to the Eddington rate, and a radio-jet mode at lower accretion rates. In other words, our feedback model deposits energy as a succession of thermal bursts and jet outflows depending on the properties of the gas surrounding the BHs. We assess the plausibility of such a model by comparing our results to observational measurements of the coevolution of BHs and their host galaxy properties, and check their robustness with respect to numerical resolution. We show that AGN feedback must be a crucial physical ingredient f...

  17. Networks of Military Alliances, Wars, and International Trade

    E-Print Network [OSTI]

    Jackson, Matthew O

    2014-01-01

    We investigate the role of networks of alliances in preventing (multilateral) interstate wars. We first show that, in the absence of international trade, no network of alliances is peaceful and stable. We then show that international trade induces peaceful and stable networks: trade increases the density of alliances so that countries are less vulnerable to attack and also reduces countries' incentives to attack an ally. We present historical data on wars and trade, noting that the dramatic drop in interstate wars since 1950, and accompanying densification and stabilization of alliances, are consistent with the model but not other prominent theories.

  18. International NO-DIG `96 conference - trenchless sounds the right note

    SciTech Connect (OSTI)

    NONE

    1996-08-01

    Of the 44 papers included in the conference proceedings, 20 were selected for the database. Papers selected addressed installation and rehabilitation methods for pipes and pipelines distributing, primarily, natural gas or electrical power lines. Major installation and rehabilitation methods included in the papers are horizontal directional drilling, pipejacking, pipebursting, shield tunneling, and sliplining. Topics addressed by these papers include: horizontal directional drilling, microtunneling research and case histories, gas pipeline rehabilitation and rehabilitation systems evaluation, horizontal drilling applications, design consideration in trenchless technology, microtunneling design, and case histories involving mapping.

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

    E-Print Network [OSTI]

    Brown, Michael R.

    Plasma gun notes Here are some notes based on an idea of Paul Bellan's (see his Spheromak book H pj = qj The Hamilton approach is elegant and exposes conservation laws. 2. Plasma gun: We can model the plasma gun as coaxial inductor with inductance L(x) = L0 +Lx and a fixed capacitor on the back

  20. International aeronautical user charges

    E-Print Network [OSTI]

    Odoni, Amedeo R.

    1985-01-01

    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 ...

  1. Internal Wave Interferometry

    E-Print Network [OSTI]

    Mathur, Manikandan S.

    Internal waves are a ubiquitous and significant means of momentum and energy transport in the oceans, atmosphere, and astrophysical bodies. Here, we show that internal wave propagation in nonuniform density stratifications, ...

  2. Managing Internal Administrative Change

    E-Print Network [OSTI]

    Custer, Joseph A.

    2000-01-01

    Mr. Custer considers the impact of already instituted internal administrative change on library staff and how best to deal with it. He approaches the topic by describing what his own library did when faced with significant internal administrative...

  3. Essays in international trade

    E-Print Network [OSTI]

    Romalis, John

    2001-01-01

    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 ...

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

    E-Print Network [OSTI]

    Dorodnitsyn, A; Proga, D

    2008-01-01

    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...

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

    E-Print Network [OSTI]

    A. Dorodnitsyn; T. Kallman; D. Proga

    2008-06-23

    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.

  6. Notes on Mayer Expansions and Matrix Models

    E-Print Network [OSTI]

    Jean-Emile Bourgine

    2014-02-03

    Mayer cluster expansion is an important tool in statistical physics to evaluate grand canonical partition functions. It has recently been applied to the Nekrasov instanton partition function of $\\mathcal{N}=2$ 4d gauge theories. The associated canonical model involves coupled integrations that take the form of a generalized matrix model. It can be studied with the standard techniques of matrix models, in particular collective field theory and loop equations. In the first part of these notes, we explain how the results of collective field theory can be derived from the cluster expansion. The equalities between free energies at first orders is explained by the discrete Laplace transform relating canonical and grand canonical models. In a second part, we study the canonical loop equations and associate them to similar relations on the grand canonical side. It leads to relate the multi-point densities, fundamental objects of the matrix model, to the generating functions of multi-rooted clusters. Finally, a method is proposed to derive loop equations directly on the grand canonical model.

  7. Information Theory and Statistical Physics - Lecture Notes

    E-Print Network [OSTI]

    Merhav, Neri

    2010-01-01

    This document consists of lecture notes for a graduate course, which focuses on the relations between Information Theory and Statistical Physics. The course is aimed at EE graduate students in the area of Communications and Information Theory, as well as to graduate students in Physics who have basic background in Information Theory. Strong emphasis is given to the analogy and parallelism between Information Theory and Statistical Physics, as well as to the insights, the analysis tools and techniques that can be borrowed from Statistical Physics and `imported' to certain problem areas in Information Theory. This is a research trend that has been very active in the last few decades, and the hope is that by exposing the student to the meeting points between these two disciplines, we will enhance his/her background and perspective to carry out research in the field. A short outline of the course is as follows: Introduction; Elementary Statistical Physics and its Relation to Information Theory; Analysis Tools in ...

  8. International Student Guide Mathematics

    E-Print Network [OSTI]

    Harman, Neal.A.

    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

  9. International and Finance

    E-Print Network [OSTI]

    Little, Tony

    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

  10. International Crystal Manufacturing

    E-Print Network [OSTI]

    Berns, Hans-Gerd

    International Crystal Manufacturing CRYSTAL OSCILLATOR AND FILTER PRODUCTS International Crystal Manufacturing, Inc. P.O. Box 26330 · Oklahoma City, OK 73126-0330 · Phone (405) 236-3741 Fax (405) 235@icmfg.com #12;2 International Crystal Manufacturing, Inc. P.O. Box 26330 · Oklahoma City, OK 73126-0330 · Phone

  11. Roadmap: Political Science International RelationsComparative Politics -Bachelor of Arts

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Political Science ­ International Relations­Comparative Politics - Bachelor of Arts [AS Updated: 8-May-12/LNHD This roadmap is a recommended semester-by-semester plan of study for this major (lower or upper division) 3 General Electives (upper division) 12 See note 2 on page 2 #12;Roadmap

  12. Synchronous Machine Modeling Notes2 1.0 Inductances

    E-Print Network [OSTI]

    McCalley, James D.

    Synchronous Machine Modeling ­ Notes2 1.0 Inductances Recall the relation between flux linkages. Rather, for each coil and coil pair in the synchronous machine, we are going to see if any of the terms

  13. Virginia Tech Adaptive Sampling Simulator 1.0 Release Notes

    E-Print Network [OSTI]

    Virginia Tech

    Tech Adaptive Sampling Simulator provides the basic functionality to incorporate high fidelity netVirginia Tech Adaptive Sampling Simulator 1.0 Release Notes General Release 1.0 of the Virginia

  14. A Note on Kirkwood's Algebraic Method for Decision Problems

    E-Print Network [OSTI]

    Guo, Rui; Shenoy, Prakash P.

    1996-09-20

    The main objectives of this note are to point out some strengths and some limitations of Kirkwood's algebraic method for decision problems, and to propose a modification to address the limitations. The modification is based ...

  15. 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

  16. HMSC Sustainability Committee 4/10/07 Meeting Notes

    E-Print Network [OSTI]

    HMSC Sustainability Committee 4/10/07 Meeting Notes Review of one-page summary of costs, rebates-consumer recycled content possible. Discussion about ways to promote sustainability at SeaFest, scheduled for June

  17. At the Crossroads: Notes from a Trip to the Philippines

    E-Print Network [OSTI]

    Schirmer, Daniel Boone

    1990-01-01

    S. military installations on Philippine soil. tfprùtg/S^nmerNotes From A Trip to the Philippines Roone Schirmer Early inon U.S. bsftHi in the Philippines, attended by over 200

  18. A note on unbounded on/off constraints

    E-Print Network [OSTI]

    H. Hijazi, L. Liberti

    2014-11-12

    a NICTA - 7 London Circuit - Canberra ACT 2601 Australia ... This note presents a theoretical analysis of disjunctive constraints featuring ... In mixed-integer linear programming, years of research have been devoted to study disjunctive.

  19. University of Connecticut Lecture Notes for ME5507 Fall 2014

    E-Print Network [OSTI]

    Chandy, John A.

    University of Connecticut Lecture Notes for ME5507 Fall 2014 Engineering Analysis I Part II: Matrix of Mechanical Engineering University of Connecticut xchen@engr.uconn.edu #12;Xu Chen Matrix, Linear Algebra

  20. University of Connecticut Lecture Notes for ME5507 Fall 2014

    E-Print Network [OSTI]

    Chandy, John A.

    University of Connecticut Lecture Notes for ME5507 Fall 2014 Engineering Analysis I Part I of Mechanical Engineering University of Connecticut xchen@engr.uconn.edu #12;Xu Chen Ordinary Differential

  1. Editorial: A Note on Good Research Practice

    SciTech Connect (OSTI)

    Dooley, James J.

    2013-07-01

    Good scientific practice and research misconduct have been concerns of mine for more than a decade (Dooley and Kerch, 2000) and in my role as an editor of the International Journal of Greenhouse Gas Control, I feel it is time to speak up and at the very least share my concerns and suggestions as they relate to the integrity of the research published in this journal. Rather than wait to write an editorial on good research practices in response to a major incident, I thought it might be best to be proactive and address some of the trends we see in submissions to this peer reviewed journal and to offer some suggestions for improvement improving the level of scholarship in some – but by no means all – of the papers submitted.

  2. Internal Revenue Service

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

    ABCDEFGHI ABCDEFGHI ABCDEFGHI ABCDEFGHI ABCDEFGHI ABCDEFGHI ABCDEFGHI ABCDE 200254 X PREPAID LEGAL X SCHEDULE A (Form 5500) Department of the Treasury Internal Revenue Service...

  3. International petroleum statistics report

    SciTech Connect (OSTI)

    1996-08-01

    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.

  4. HydroVision International

    Broader source: Energy.gov [DOE]

    The HydroVision International Conference and Exhibition offers attendees countless opportunities to network, share best practices, meet with product and service providers, and more.  Held over five...

  5. WIPP Attracts International Interest

    Broader source: Energy.gov [DOE]

    CARLSBAD, N.M. – EM’s Waste Isolation Pilot Plant (WIPP) was in the spotlight with two international organizations at meetings held in Europe late last year.

  6. International Subcommittee Report

    Energy Savers [EERE]

    the new realities of the global industry where there are many international suppliers of nuclear power plants and fuel cycle services U.S. government nuclear strategy...

  7. EM International. Volume 1

    SciTech Connect (OSTI)

    Not Available

    1993-07-01

    It is the intent of EM International to describe the Office of Environmental Restoration and Waste Management`s (EM`s) various roles and responsibilities within the international community. Cooperative agreements and programs, descriptions of projects and technologies, and synopses of visits to international sites are all highlighted in this semiannual journal. Focus on EM programs in this issue is on international collaboration in vitrification projects. Technology highlights covers: in situ sealing for contaminated sites; and remote sensors for toxic pollutants. Section on profiles of countries includes: Arctic contamination by the former Soviet Union, and EM activities with Germany--cooperative arrangements.

  8. LLW Notes, Volume 12, Number 8

    SciTech Connect (OSTI)

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

    1997-12-31

    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.

  9. OSCOLA 2006 CITING INTERNATIONAL

    E-Print Network [OSTI]

    Neri, Peter

    Law provides a useful guide to sources of international law (www.eisil.org), and includes information about how to cite a great variety of sources of international law (under the `More information' links for Primary Documents). The General Principles in Part III B, `Other Sources', provide guidelines for citing

  10. CAREERS at the International

    E-Print Network [OSTI]

    Hart, Gus

    for cooperation in the nuclear field committed to promoting safe, secure and peaceful uses of nuclear technologyMembersHaveExpertiseintheFollowingFields: Accounting/Finance Nuclear Energy Agriculture Nuclear Engineering Computer Sciences Nuclear Medicine EnergyCAREERS at the IAEA International Employment Opportunities at the International Atomic Energy

  11. Fifth International Workshop on

    E-Print Network [OSTI]

    Amaral, Luis A.N.

    (DELTA) re itute on C research gr to Social N of ty Network Sc Movement Southern Ca ersity of esearchFifth International Workshop on Network Theory: Network Science Meets the Science of Teams Theory, Lo Second Inte in the Digita Los Angeles Third Intern March 4-6, 2 Fourth Inte Network Th Los

  12. International Experience Singapore 2014

    E-Print Network [OSTI]

    Subramanian, Venkat

    , energy and environmental issues in India, alternative energy and technology in China and Hong KongInternational Experience Singapore 2014 Department of Energy, Environmental And Chemical Experience Program is part of the McDonnell International Scholars Academy Global Energy & Environment

  13. INTERNATIONAL STUDY CENTRE

    E-Print Network [OSTI]

    Fletcher, Robin

    the BADER INTERNATIONAL STUDY CENTRE at Herstmonceux Castle 2015 #12;welcome to the Castle #12;LEARN 4 4 Experiential Learning 6 21st Century Education 7 Supporting your Success STUDY 8 9 First; The fact that the Bader International Study Centre operates within the walls of a fifteenthcentury English

  14. Sync your library with EndNote Web Information Services 2 February 2013

    E-Print Network [OSTI]

    Painter, Kevin

    Sync your library with EndNote Web EndNote X6 #12;Information Services 2 February 2013 Introduction When you Sync your EndNote library with your library in EndNoteWeb, the two libraries will be compared, and · references that are in your EndNoteWeb library but not in the desktop library will be sent to your desktop

  15. SINFONI spectra of heavily obscured AGNs in COSMOS: evidence of outflows in a MIR/O target at z$\\sim2.5$

    E-Print Network [OSTI]

    Perna, M; Salvato, M; Cresci, G; Lanzuisi, G; Berta, S; Delvecchio, I; Fiore, F; Lutz, D; Floc'h, E Le; Mainieri, V; Riguccini, L

    2015-01-01

    We present new data for four candidate obscured Compton-Thick (CT) quasars at z $\\sim$1-2.5 observed with SINFONI VLT spectrograph in AO mode. These sources were selected from a 24$\\mu$m Spitzer MIPS survey of the COSMOS field, on the basis of red mid-infrared-to-optical and optical-to-near-infrared colours, with the intention of identifying active galactic nuclei (AGNs) in dust enshrouded environments, where most of the black hole mass is assembled in dust enshrouded environments. Near infrared spectra were analyzed in order to check for emission line features and to search for broad components in the [OIII]-H$\\beta$ and H$\\alpha$-[NII] regions. X-ray spectral analysis, radio and MIR diagnostics, and SED fitting have also been employed to study the nature of the sources. We successfully identified three objects for which we had only a photometric redshift estimate. Based on their emission line diagnostics and on ancillary multi-wavelength constraints, we find that all four targets harbor obscured AGNs. Broad...

  16. The SINS/zC-SINF survey of z~2 galaxy kinematics: Evidence for powerful AGN-driven nuclear outflows in massive star-forming galaxies

    E-Print Network [OSTI]

    Schreiber, N M Förster; Newman, S F; Kurk, J D; Lutz, D; Tacconi, L J; Wuyts, S; Bandara, K; Burkert, A; Buschkamp, P; Carollo, C M; Cresci, G; Daddi, E; Davies, R; Eisenhauer, F; Hicks, E K S; Lang, P; Lilly, S J; Mainieri, V; Mancini, C; Naab, T; Peng, Y; Renzini, A; Rosario, D; Griffin, K Shapiro; Shapley, A E; Sternberg, A; Tacchella, S; Vergani, D; Wisnioski, E; Wuyts, E; Zamorani, G

    2013-01-01

    We report the detection of ubiquitous powerful nuclear outflows in massive (> 10^11 Msun) z~2 star-forming galaxies (SFGs), which are plausibly driven by an Active Galactic Nucleus (AGN). The sample consists of the eight most massive SFGs from our SINS/zC-SINF survey of galaxy kinematics with the imaging spectrometer SINFONI, six of which have sensitive high-resolution adaptive optics (AO) assisted observations. All of the objects are disks hosting a significant stellar bulge. The spectra in their central regions exhibit a broad component in Halpha and forbidden [NII] and [SII] line emission, with typical velocity FWHM ~ 1500 km/s, [NII]/Halpha ratio ~ 0.6, and intrinsic extent of 2 - 3 kpc. These properties are consistent with warm ionized gas outflows associated with Type 2 AGN, the presence of which is confirmed via independent diagnostics in half the galaxies. The data imply a median ionized gas mass outflow rate of ~ 60 Msun/yr and mass loading of ~ 3. At larger radii, a weaker broad component is detecte...

  17. 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

  18. 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

  19. PEFC Uruguay Seeks International Recognition JUL 26 2010 | INTERNATIONAL

    E-Print Network [OSTI]

    PEFC Uruguay Seeks International Recognition JUL 26 2010 | INTERNATIONAL Uruguay has become the latest Latin American country to submit its national forest certification scheme for PEFC endorsement Ben Gunneberg, PEFC International Secretary General."The current assessment analyses the compliance

  20. International energy annual 1996

    SciTech Connect (OSTI)

    1998-02-01

    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.

  1. International petroleum statistics report

    SciTech Connect (OSTI)

    1995-10-01

    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.

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

    SciTech Connect (OSTI)

    NONE

    1994-03-01

    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.

  3. International Finance and Climate Change

    E-Print Network [OSTI]

    Zhang, Junshan

    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

  4. North America: Regulation of International Electricity Trade...

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

    North America: Regulation of International Electricity Trade North America: Regulation of International Electricity Trade North America: Regulation of International Electricity...

  5. International Summary of the

    E-Print Network [OSTI]

    ;International Context for MFE Roadmapping 4 · ITER means that MFE is on an energy path. · There is renewed focus Associates Annual Symposium Washington, DC 14 December 2011 #12;Outline 2 · Background and motivation

  6. International petroleum statistics report

    SciTech Connect (OSTI)

    1996-12-01

    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.

  7. International petroleum statistics report

    SciTech Connect (OSTI)

    1996-03-01

    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.

  8. INTERNATIONAL STUDIES AND PROGRAMS

    E-Print Network [OSTI]

    the incidence of dengue fever in a small Mekong Delta village using an approach that combines school reform and engage MSU's international alumni. 16 SPARTANS VS. MOSQUITOES MSU researchers successfully address

  9. Essays on International Economics

    E-Print Network [OSTI]

    Cravino, Javier Pablo

    2013-01-01

    Journal of International Economics, Vol. 65, 375–99. [33]Journal of Monetary Economics, Vol. 51, No. 1, pp. 1–32. [Trade”, Journal of Monetary Economics, Vol. 54, No. 6, pp.

  10. Essays in international finance

    E-Print Network [OSTI]

    Jones, Geraint Paul

    2005-01-01

    This thesis is a collection of three essays on exchange rate policies and international capital flows in emerging markets. The first chapter examines the theoretical foundations of the "fear of floating" that has been ...

  11. SWAT Goes International 

    E-Print Network [OSTI]

    Wythe, Kathy

    2007-01-01

    , in January 2009 in Chang Mai, Thailand, and the 2010 conference in New Delhi, India. Srinivasan said researchers from every continent except Antarctica attend the international meetings. ?They have been a huge success,? he said. ?Every con- ference we...

  12. 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...

  13. 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.

  14. Wood Resources International

    E-Print Network [OSTI]

    ;Wood Resources International Production of energy from wood fuels in 2000 Source: EUBIONET 0 50 100 150.3% Sweden 5.3% Finland 4.1% Russia 13.8% US 37.3% Germany 3.3% France 2.8% Poland 2.1% Other Europe 14 #12;Wood Resources International Global Industrial Roundwood Production in 2002 Other Europe 6.9% CIS

  15. Turbulent AGN tori

    E-Print Network [OSTI]

    M. Schartmann; K. Meisenheimer; H. Klahr; M. Camenzind; S. Wolf; Th. Henning

    2008-08-05

    Recently, the MID-infrared Interferometric instrument (MIDI) at the VLTI has shown that dust tori in the two nearby Seyfert galaxies NGC 1068 and the Circinus galaxy are geometrically thick and can be well described by a thin, warm central disk, surrounded by a colder and fluffy torus component. By carrying out hydrodynamical simulations with the help of the TRAMP code (Klahr et al. 1999), we follow the evolution of a young nuclear star cluster in terms of discrete mass-loss and energy injection from stellar processes. This naturally leads to a filamentary large scale torus component, where cold gas is able to flow radially inwards. The filaments open out into a dense and very turbulent disk structure. In a post-processing step, we calculate observable quantities like spectral energy distributions or images with the help of the 3D radiative transfer code MC3D (Wolf 2003). Good agreement is found in comparisons with data due to the existence of almost dust-free lines of sight through the large scale component and the large column densities caused by the dense disk.

  16. TECHNICAL NOTE Geotechnical properties of fresh cement groutpressure ltration

    E-Print Network [OSTI]

    Bolton, Malcolm

    TECHNICAL NOTE Geotechnical properties of fresh cement groutÐpressure ®ltration and consolidation relations; grouting; laboratory tests; permeability. INTRODUCTION Cement is a basic construction material, and in geotechnics the hydraulic cements known as Port- land cements are particularly important. Hydraulic cements

  17. Technical Notes Short-Term Physiologic Effects of Mechanical Flow

    E-Print Network [OSTI]

    Jochem, Frank J.

    Technical Notes Short-Term Physiologic Effects of Mechanical Flow Sorting and the Becton to large, high-efficiency cyto- meters, mechanically sorting benchtop instruments pro- vide a feasible photosynthetic rates and esterase activities by mechanical flow sorting and cell concentration

  18. Discussion Note Architecture-based motivation vs Reward-based

    E-Print Network [OSTI]

    Sloman, Aaron

    Discussion Note Architecture-based motivation vs Reward-based motivation Aaron Sloman School to change.) CONTENTS (Provisional) Introduction Where do motives come from? My claim Learning and motivation Architecture-based motivation More complex variations Mechanisms required Conclusion Acknowledgements From time

  19. A note on modelling cross correlations: hyperbolic secant regression

    E-Print Network [OSTI]

    Smyth, Gordon K.

    A note on modelling cross correlations: hyperbolic secant regression Gordon K. Smyth Department of size one. This al- lows regression type modelling of the correlation without unnecessary loss ~ is given in Section 2 that has useful performance down to samples of size one. This allows regression type

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

    E-Print Network [OSTI]

    Kerbs, R. W.

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

  1. Notes on Single-Particle Reconstruction in Cryogenic

    E-Print Network [OSTI]

    Duncan, James S.

    Notes on Single-Particle Reconstruction in Cryogenic Electron Microscopy Hemant D. Tagare-dimensional structure of macromolecules. A more modern method is cryogenic electron microscopy (cryo-em), which of a cryo-EM experiment. In very simple terms, the cryo-em approach is to freeze several identical copies

  2. The messy truth about drag Richard Feynman once noted that

    E-Print Network [OSTI]

    Loss, Daniel

    the drag on a sphere moving at fixed speed through a viscous fluid. Many texts give the impression, viscous forces dominate near the sphere, but inertial forces do so in regions far away. This makes it hardTHESIS The messy truth about drag Richard Feynman once noted that scientific literature tends

  3. A Note on Planar and Dismantlable Lattices Karen L. Collins

    E-Print Network [OSTI]

    Collins, Karen L.

    A Note on Planar and Dismantlable Lattices Karen L. Collins: dismantlable, lexicographically shellable, Cohen-Macaulay, planar, lattice. All lattices are assumed to be finite. Bj"orner [2] has shown that a dismantlable (see Rival, [5]) lattice L is Cohen-Macaulay (see [6

  4. Notes for Math 450 Stochastic Petri nets and reactions

    E-Print Network [OSTI]

    Feres, Renato

    are a special class of networks, introduced in 1962 by Carl Adam Petri, that provide a convenient languageNotes for Math 450 Stochastic Petri nets and reactions Renato Feres 1 Petri nets Petri nets of the terms used in our discussion will come from chemical kinetics, an area where Petri nets are widely

  5. Galen Sasaki University of Hawaii 1 MIPS Introduction (MIPSa Notes)

    E-Print Network [OSTI]

    Sasaki, Galen H.

    1 Galen Sasaki University of Hawaii 1 EE 361 MIPS Introduction (MIPSa Notes) Galen Sasaki University of Hawaii 2 ROADMAP: Our Computer Architecture · MIPS overview · Basic instruction overview will be highlighted #12;2 Galen Sasaki University of Hawaii 3 MIPS Motivation RISC Computer Architecture Reduced

  6. Galen Sasaki University of Hawaii 1 MIPS Introduction (MIPSa Notes)

    E-Print Network [OSTI]

    Sasaki, Galen H.

    Galen Sasaki University of Hawaii 1 EE 361 MIPS Introduction (MIPSa Notes) Galen Sasaki University of Hawaii 2 ROADMAP: Our Computer Architecture · MIPS overview · Basic instruction overview ­ Operations;Galen Sasaki University of Hawaii 3 MIPS Motivation RISC Computer Architecture Reduced Instruction Set

  7. BaBar Note 295 May 16th, 1996

    E-Print Network [OSTI]

    the heat exchange. Note the 2 HDIs on each pair of feet. between water and cooling walls has been made generated on the hybrid. We have realized that lateral walls of the channel help the heat exchange between and cooling system. Three types of hybrid will be used in BaBar SVT, di ering in the number of chips from 10

  8. The CIEDE2000 Color-Difference Formula: Implementation Notes,

    E-Print Network [OSTI]

    Sharma, Gaurav

    The CIEDE2000 Color-Difference Formula: Implementation Notes, Supplementary Test Data and scientists in correctly implementing the recently developed CIEDE2000 color-difference formula. We indicate mathematical discontinuities in the formula. © 2004 Wiley Periodicals, Inc. Col Res Appl, 30, 21­30, 2005

  9. Technical Note Correction of Eddy-Current Distortions in Diffusion

    E-Print Network [OSTI]

    Technical Note Correction of Eddy-Current Distortions in Diffusion Tensor Images Using the Known,2 Purpose: To correct eddy-current artifacts in diffusion ten- sor (DT) images without the need to obtain- tortions caused by eddy currents induced by large diffusion gradients. We propose a new postacquisition

  10. DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING Curriculum Notes

    E-Print Network [OSTI]

    Mohan, Chilukuri K.

    Analysis of Public Policy PAF 451 ­ Environmental Policy PSC 302- Environmental Politics and Policy PSC 305 ­ World Political Economy MAX 123 ­ Critical Issues for the U.S. MAX 132 ­ Global Community PAF 351DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING Curriculum Notes 2013-2014 SS/HUM ELECTIVES All

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

    E-Print Network [OSTI]

    Fermilab

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

  12. Temporal Logic in Information Systems BRICS Minicourse Lecture Notes \\Lambda

    E-Print Network [OSTI]

    Toman, David

    Temporal Logic in Information Systems BRICS Mini­course Lecture Notes \\Lambda Jan Chomicki Dept the fundamental vari­ eties of temporal logic and describe their applications in information systems. Several of the Danish National Research Foundation, 1997. c fl Jan Chomicki and David Toman, 1997. Full version

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

    E-Print Network [OSTI]

    Damm, Werner

    development on Android devices. Preparation for the seminar resulted in an overview paper motivating research efficient applications. To investigate this topic further a research seminar was held in winter semesterOldenburg Lecture Notes in Software Engineering Energy-Efficient Applications Seminar

  14. Guidance Note 052 RISK ASSESSMENTS FOR HAZARDOUS CHEMICALS

    E-Print Network [OSTI]

    Guidance Note 052 RISK ASSESSMENTS FOR HAZARDOUS CHEMICALS as required under the CONTROL OF SUBSTANCES HAZARDOUS TO HEALTH REGULATIONS (COSHH) and the DANGEROUS SUBSTANCES AND EXPLOSIVE ATMOSPHERES Involving the Use of Hazardous Chemicals. COSHH requires health risks to be assessed and controlled

  15. Scientific Notes 649 LEPIDOPTERA ASSOCIATED WITH AVOCADO FRUIT IN GUATEMALA

    E-Print Network [OSTI]

    Hoddle, Mark S.

    Scientific Notes 649 LEPIDOPTERA ASSOCIATED WITH AVOCADO FRUIT IN GUATEMALA MARK S. HODDLE1- raceae) evolved in the eastern and central high- lands of Mexico, Guatemala, and the Pacific Coast), and Guatemala (10) (FAOSTAT 2009). California, the fourth largest producer of avocados in the world (FAOSTAT

  16. A Note On SideChannels Resulting From Dynamic Compilation

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    A Note On Side­Channels Resulting From Dynamic Compilation D. Page University of Bristol, Merchant Venturers Building, Woodland Road, Bristol, BS8 1UB, UK. page@cs.bris.ac.uk Abstract. Dynamic compilation such as Java. These systems analyse the performance of an application at run­ time and aggressively re­compile

  17. A Note On Side-Channels Resulting From Dynamic Compilation

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    A Note On Side-Channels Resulting From Dynamic Compilation D. Page University of Bristol, Merchant Venturers Building, Woodland Road, Bristol, BS8 1UB, UK. page@cs.bris.ac.uk Abstract. Dynamic compilation such as Java. These systems analyse the performance of an application at run- time and aggressively re-compile

  18. AI 1 Introductory Notes. Page 1 Artificial Intelligence I

    E-Print Network [OSTI]

    Huntbach, Matthew

    AI 1 Introductory Notes. Page 1 Artificial Intelligence I Matthew Huntbach, Dept of Computer.J.M.Bench-Capon Knowledge Representation: An Approach to Artificial Intelligence Academic Press (1990). A little simplistic, but short and not over-technical. Covers roughly the same material as will be in the Artificial Intelligence

  19. Electricity and Magnetism Review Notes by L. Qian1

    E-Print Network [OSTI]

    Qian, Li

    Electricity and Magnetism Review Notes by L. Qian1 Electric Magnetic) --------------------------------------------------- ------------------------------------------------- Electric Field: Magnetic Field: Symbol: E r Symbol: B r Unit: V/m = N/C Unit: T = Ns /(Cm) [T: Tesla] - Electric field due to a static charge q - Magnetic field due to a current element sdi r r r q E ^ 4 1 2 0 r

  20. Technical Note/ Improved Water Table Dynamics in MODFLOW

    E-Print Network [OSTI]

    Barrash, Warren

    Technical Note/ Improved Water Table Dynamics in MODFLOW by Tom Clemo1 Abstract The standard as the location of a cell node. Simulations of a dynamic water table can be improved if the node of a cell containing the water table is located at the water table rather than at the center of the cell. The LPF

  1. TECHNICAL NOTE Open Access Searching the protein structure database for

    E-Print Network [OSTI]

    Powers, Robert

    TECHNICAL NOTE Open Access Searching the protein structure database for ligand-binding site RefSeq database indicates that ~8.5 million protein sequences are encoded in prokaryotic Comparison of Protein Active-Site Structures (CPASS v.2) database and software compares the sequence

  2. Technical note Coolant void worth in fast breeder reactors

    E-Print Network [OSTI]

    and accelerator-driven system (ADS) configurations with aim to identify suitable core and fuel design parametersTechnical note Coolant void worth in fast breeder reactors and accelerator-driven transuranium as a function of fuel composition and core geometry for several model fast breeder reactors and accelerator-driven

  3. Short Notes Taxonomy of the Plethodontid Salamander Genus Hydromantes

    E-Print Network [OSTI]

    Wake, David B.

    Short Notes Taxonomy of the Plethodontid Salamander Genus Hydromantes (Caudata: Plethodontidae, when Dunn made a proposal that sta- bilized taxonomy (all species placed in Hy- dromantes) for over 60. His sugges- tion for the taxonomy of the group was to recog- nize a single genus, Hydromantoides

  4. Notes on Lgapack Fhp6_simp Params.h file

    E-Print Network [OSTI]

    Sukop, Mike

    Notes on Lgapack Fhp6_simp Params.h file #define NX 16 #define NY 40 #define TPRINT 4000000 #define=(int) dR*cos(phi*2*PI)+XC; nx+ix) = 1; PtrSolid=fopen("disksolid","w"); nx;ix++) nx+ix]);

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

    E-Print Network [OSTI]

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

  6. Coastal Engineering Technical Note IV-20 September 1999

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Coastal Engineering Technical Note IV-20 September 1999 1 Sediment Budget Analysis System (SBAS platforms. This CETN is a companion to CETN-IV-15 (Revised September 1999) (Rosati and Kraus 1999), which IV-20 September 1999 2 · Produces report-quality graphics and has all typical Windows operating

  7. MATH 51 LECTURE NOTES: HOW GOOGLE RANKS WEB PAGES

    E-Print Network [OSTI]

    Easton, Robert W.

    MATH 51 LECTURE NOTES: HOW GOOGLE RANKS WEB PAGES BRIAN WHITE During a typical use of a search engine, (1) the user types a word, (2) the engine finds all web pages that contain the given word, and (3 of doing step 3, that is, a better way of ranking web pages. Google's method is called the Page

  8. Methods Note/ Net Recharge vs. Depth to Groundwater

    E-Print Network [OSTI]

    Szilagyi, Jozsef

    Methods Note/ Net Recharge vs. Depth to Groundwater Relationship in the Platte River Valley rates were correlated with depth to groundwater (d) values in the wide alluvial valley of the Platte soils with a shallow groundwater table. The transition depth (dt) between negative and positive values

  9. Technical Note Variational free energy and the Laplace approximation

    E-Print Network [OSTI]

    Penny, Will

    Technical Note Variational free energy and the Laplace approximation Karl Friston,a, Jérémie the variational free energy under the Laplace approximation, with a focus on accounting for additional model complexity induced by increasing the number of model parameters. This is relevant when using the free energy

  10. Energy and Society Week 6 Section Plan GSI Notes

    E-Print Network [OSTI]

    Kammen, Daniel M.

    standard deviations account for about 99 percent of the data. You can also use a Z-table in any stats book. Renewable energy sources like wind and solar PV are intermittent and, by themselves, reduce the reliability1 Energy and Society Week 6 Section Plan ­ GSI Notes AGENDA 1. Get feedback on section from

  11. Managing References using EndNote online: Pharmacy & Pharmacology

    E-Print Network [OSTI]

    Scheichl, Robert

    . In the catalogue search box, type in Web of Science 3. The open Web of Science database by clicking view online and then the Register link (drop-down under the Customize your experience option) 2. Enter your University of Bath email. Read and agree to terms use of use to complete registration 8. To access EndNote online in the future

  12. Note: Instructions for Completing in [Italics] SCHEDULE OF PROJECT DETAILS

    E-Print Network [OSTI]

    Kamat, Vineet R.

    ] ___________________________________________________________________________________ Design Professional - Schedule of Project Details Page 1 of 6 Form Date: CM January 2015 #12;The Basic-consultants that are included in the Basic Services are as follows: Firm Name Type of Architect/Engineer 5. ReimbursableNote: Instructions for Completing in [Italics] SCHEDULE OF PROJECT DETAILS for the Agreement

  13. Notes from the 3rd Axion Strategy Meeting

    E-Print Network [OSTI]

    O. K. Baker; G. Cantatore; J. Jaeckel; G. Mueller

    2010-07-12

    In this note we briefly summarize the main future targets and strategies for axion and general low energy particle physics identified in the "3rd axion strategy meeting" held during the AXIONS 2010 workshop. This summary follows a wide discussion with contributions from many of the workshop attendees.

  14. Tyndall Briefing Note No. 6 First Reactions to the

    E-Print Network [OSTI]

    Watson, Andrew

    Tyndall Briefing Note No. 6 March 2003 First Reactions to the Energy White Paper from the UK the principal message behind the new Energy White Paper, namely, that a long term energy strategy is essential embrace of renewable energy technologies as providing a significant component of the UK's medium to long

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

    E-Print Network [OSTI]

    Keniston, Kenneth

    SOFTWARE LOCALIZATION: NOTES ON TECHNOLOGY AND CULTURE Kenneth Keniston Kenneth Keniston is Andrew localization is to be understood. Introduction "Cultural localization" is the process whereby software written localized software is indistinguishable from software written by a member of that culture." Cultural

  16. Drug Information Chart Notes Drug ad (intrinsic bias)

    E-Print Network [OSTI]

    Fletcher, Robin

    Drug Information Chart Notes Drug ad (intrinsic bias) Trade name Different for each company Dosage Same or different? A drug in a different dosage can be used for a different therapy. Precautions Check for pregnancy A complete book on drugs in pregnancy and lactation in bibliography. (unbiased

  17. BaBar Note 323 Temperature Monitoring and Interlocks

    E-Print Network [OSTI]

    BaBar Note 323 Temperature Monitoring and Interlocks for the BaBar SVT Front-End Electronics David 35 2 #12;1 Introduction This document describes the temperature monitoring and interlocks for the SVT to preventavoidable damage to the HDI 1 . The secondary requirement of this system is to monitor HDI temperatures

  18. BaBar Note 302 Monitoring Requirements of

    E-Print Network [OSTI]

    : : : : : : : : : : : : : : : : : : : : 19 3 Position Monitoring 21 4 Temperature Monitoring 25 4.1 Mechanical StructureBaBar Note 302 Monitoring Requirements of the BaBar Silicon Vertex Tracker Pat Burchat, David the requirements for many of the monitoring tasks associated with the silicon vertex tracker SVT. It covers

  19. Lecture Notes on CMB Theory: From Nucleosynthesis to Recombination

    E-Print Network [OSTI]

    Hu, Wayne

    Lecture Notes on CMB Theory: From Nucleosynthesis to Recombination by Wayne Hu arXiv:0802.3688v1[astro-ph]25Feb2008 #12;Contents CMB Theory from Nucleosynthesis to Recombination page 1 1 Introduction 1 2 Brief Thermal History 1 2.1 Nucleosynthesis and Prediction of the CMB 1 2.2 Thermalization

  20. Lecture Notes on CMB Theory: From Nucleosynthesis to Recombination

    E-Print Network [OSTI]

    Wayne Hu

    2008-02-25

    These lecture notes comprise an informal but pedagogical introduction to the well established physics and phenomenology of the cosmic microwave background (CMB) between big bang nucleosynthesis and recombination. The dominant properties of the spectrum, temperature anisotropy and polarization anisotropy of the CMB all arise from this period. We review the physical processes involved and show how they are related to the observed phenomenology.

  1. Technical note Forensic application of the affymetrix human mitochondrial

    E-Print Network [OSTI]

    Technical note Forensic application of the affymetrix human mitochondrial resequencing array§ P.M. Vallone a,*, J.P. Jakupciak a , M.D. Coble b a National Institute of Standards and Technology (NIST in the Affymetrix protocol guide (http://www.affymetrix.com/support/ technical/manuals.affx). The full mitochondrial

  2. VOL. 35, NO. 1 SOUTHWESTERN ENTOMOLOGIST MAR. 2009 SCIENTIFIC NOTE

    E-Print Network [OSTI]

    Tomberlin, Jeff

    VOL. 35, NO. 1 SOUTHWESTERN ENTOMOLOGIST MAR. 2009 SCIENTIFIC NOTE Observations on the Oriental and is restricted to the southern U.S. We observed the arrival and colonization of blow flies on a decaying domestic to colonize decomposing remains in the U.S. (Byrd and Butler 1996). The first flies attracted to the chickens

  3. A NOTE ON VISCOUS SPLITTING OF DEGENERATE CONVECTIONDIFFUSION EQUATIONS

    E-Print Network [OSTI]

    . It thus provides a suitable ``L 1 type'' framework for analyzing numerical schemes for convection­diffusionA NOTE ON VISCOUS SPLITTING OF DEGENERATE CONVECTION­DIFFUSION EQUATIONS Steinar Evje, Kenneth possibly strongly degenerate convection­diffusion problems. Since we allow the equations to be strongly

  4. Technical Note/ Impact of Coastal Land Reclamation on

    E-Print Network [OSTI]

    Jiao, Jiu Jimmy

    of fresh ground water resource because the reclaimed land can be an additional aquifer and rain rechargeTechnical Note/ Impact of Coastal Land Reclamation on Ground Water Level and the Sea Water a significant effect on local ground water systems. Steady-state analytic solutions based on Dupuit and Ghyben

  5. TECHNICAL NOTE Centrifuge cone penetration tests in sand

    E-Print Network [OSTI]

    Bolton, Malcolm

    TECHNICAL NOTE Centrifuge cone penetration tests in sand M. D. BOLTON,Ã M. W. GUI,Ã J. GARNIER,{ J. F. CORTE,{ G. BAGGE,{ J. LAUE} and R. RENZIk KEYWORDS: centrifuge modelling; in-situ testing; laboratory tests; piles; sands. INTRODUCTION Centrifuges have been widely adopted in modelling geotechnical

  6. OPAL Physics Note PN258 10 September 1996

    E-Print Network [OSTI]

    Evans, Hal

    OPAL Physics Note PN258 10 September 1996 Measurement of the Exclusive ø­Lepton Decay to a Final State with One K 0 S Meson and Three Charged Hadrons The OPAL Collaboration Abstract We describe hadrons, using Z 0 !ø + ø \\Gamma candidates collected with the OPAL detector at LEP during the 1990

  7. Managing References using EndNote online: Chemistry

    E-Print Network [OSTI]

    Scheichl, Robert

    search box, type in Web of Science 3. The open Web of Science database by clicking view online under and then the Register link (drop-down under the Customize your experience option) 2. Enter your University of Bath email. Read and agree to terms use of use to complete registration 8. To access EndNote online in the future

  8. Internet/Networking Overview Notes for CSC 580

    E-Print Network [OSTI]

    Tate, Steve

    /Networking Overview Slide 4 Some Internet History · ARPA (Advanced Research Projects Agency) experiment to test ideas: The web and privatization Internet/Networking Overview Slide 5 Some Web History · 1990: Tim Berners1 Internet/Networking Overview Notes for CSC 580 Internet/Networking Overview Slide 2 Internet

  9. Notes on the Vitality of Hypertext Systems Mark Bernstein

    E-Print Network [OSTI]

    Shipman, Frank

    Notes on the Vitality of Hypertext Systems Mark Bernstein Eastgate Systems, Inc. E-mail: bernstein with age, fade, and ultimately disappear. VITALITY Designers of new hypertext systems have always been is not loss of its platform but rather the gradual loss of its vitality, its ability to support change

  10. Volumetric Methods in Visual Effects SIGGRAPH 2010 Course Notes

    E-Print Network [OSTI]

    Teschner, Matthias

    Volumetric Methods in Visual Effects SIGGRAPH 2010 Course Notes Course Organizers Magnus Wrenninge1 magnus.wrenninge@gmail.com 2 nafees@nafees.net #12;Course Description Computer generated volumetric with and have authored proprietary and commercial volumetrics tools. The course begins with a quick introduction

  11. Covering Note INTER-ACADEMY REPORT ON GM CROPS

    E-Print Network [OSTI]

    Giri, Ranjit K.

    Covering Note for INTER-ACADEMY REPORT ON GM CROPS (Updated) The Inter-Academy Report on GM crops the main conclusions and recommendations. The literature on GM crops is voluminous. More than a hundred seek to enunciate a national strategy on GM crops. The rest deals with concerns, surveillance etc. #12

  12. TECHNICAL NOTES Relation between SaffirSimpson Hurricane

    E-Print Network [OSTI]

    Kareem, Ahsan

    TECHNICAL NOTES Relation between Saffir­Simpson Hurricane Scale Wind Speeds and Peak 3-s Gust Abstract: The Saffir­Simpson scale for categorizing hurricane intensity and damage potential is increasingly being used by hurricane forecasters and emergency managers. The hurricane intensity categories

  13. 10th International Conference on Construction Applications of Virtual Reality, 2010 WEB SERVICES IN ARCHITECTURALAND CIVIL ENGINEERING

    E-Print Network [OSTI]

    Stanford University

    10th International Conference on Construction Applications of Virtual Reality, 2010 1 WEB SERVICES developments in information modeling and web services will have significant impacts in engineering design computing model become popular, web-based software services and business models are emerging. This note

  14. OS-2-1-010 Fifth International Symposium on Cavitation (CAV2003) Osaka, Japan, November 1-4, 2003

    E-Print Network [OSTI]

    Colonius, Tim

    of the shock wave in a lithotripter are depicted in figure 1. It should be noted that the generationReflected wave Edge waveEdge wave Initial shock wave generation Reflection of shock wave by ellipsOS-2-1-010 Fifth International Symposium on Cavitation (CAV2003) Osaka, Japan, November 1-4, 2003

  15. TAIWAN INTERNATIONAL GRADUATE PROGRAM Taiwan International Graduate Program.......................1

    E-Print Network [OSTI]

    INDEX TAIWAN INTERNATIONAL GRADUATE PROGRAM Taiwan International Graduate Program.............................................................8-17 Forms For Letters of Recommendation...................18-28 #12;Taiwan International Graduate Program Thank you for considering the Taiwan International Graduate Program to pursue your Ph.D. degree

  16. EndNote Online for SPS: guide 1. Registering to use EndNote Online p.1

    E-Print Network [OSTI]

    Scheichl, Robert

    . Enter search terms on a topic of your choice (note peer- reviewed option and use of OR betweenS screen. Finally, enter the email and password details that you have set up. Agree to terms of use alternative terms). Click Search. #12;3 iii. Select a few references from your results to transfer (tick

  17. School of International Graduate Studies

    E-Print Network [OSTI]

    School of International Graduate Studies 1 SCHOOL OF INTERNATIONAL GRADUATE STUDIES Information Brief Last revision: 5/11 #12;School of International Graduate Studies 2 NPS Facts · Worldwide Outreach · Fully accredited #12;School of International Graduate Studies 3 SIGS Objectives · Provide graduate

  18. School of International Graduate Studies

    E-Print Network [OSTI]

    School of International Graduate Studies 1 SCHOOL OF INTERNATIONAL GRADUATE STUDIES Information Brief Last revision: 10/09 #12;School of International Graduate Studies 2 SIGS Objectives · Provide Security · Support U.S. defense and foreign policy #12;School of International Graduate Studies 3

  19. 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

  20. Edray H Goins: Notes and Publications.html

    E-Print Network [OSTI]

    Sep 6, 2014 ... 275 (2001), pgs. 13 - 31. With Mel Currie, On the Distribution of Fractional Parts. Internal publication of the National Security Agency. (1997).

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

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

    and Hydrogen Fuels Workshop Safety and Regulatory Structure for CNG, CNG-Hydrogen Vehicles and Fuels in India International Hydrogen Fuel and Pressure Vessel Forum 2010 Proceedings...

  2. International perspectives on mitigating laboratory biorisks.

    SciTech Connect (OSTI)

    Pinard, William J.; Salazar, Carlos A.

    2010-11-01

    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.

  3. International energy outlook 1994

    SciTech Connect (OSTI)

    Not Available

    1994-07-01

    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.

  4. International energy annual 1997

    SciTech Connect (OSTI)

    1999-04-01

    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.

  5. V-147: IBM Lotus Notes Mail Client Lets Remote Users Execute...

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

    7: IBM Lotus Notes Mail Client Lets Remote Users Execute Java Applets V-147: IBM Lotus Notes Mail Client Lets Remote Users Execute Java Applets May 2, 2013 - 6:00am Addthis...

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

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

    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 -...

  7. Earth shelter goes international

    SciTech Connect (OSTI)

    Boyer, L.L.

    1983-06-01

    Since the mid-1970's earth sheltered buildings in the US have become more numerous and important as a contemporary passive building concept. Further, an intense international interest has now developed, as evidenced by a number of important activities. One of these events is the 1983 International Conference on Energy Efficient Buildings with Earth Shelter Protection to be conducted during 1-6 August in Sydney, Australia. A review of past activities leading up to this event, as well as a brief review of the conference program, is the subject of this discussion.

  8. INTERNAL REPAIR OF PIPELINES

    SciTech Connect (OSTI)

    Robin Gordon; Bill Bruce; Nancy Porter; Mike Sullivan; Chris Neary

    2003-05-01

    The two broad categories of deposited weld metal repair and fiber-reinforced composite 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 repairs and for fiber-reinforced composite repair. To date, all of the experimental work pertaining to the evaluation of potential repair methods has focused on fiber-reinforced composite repairs. Hydrostatic testing was also conducted on four pipeline sections with simulated corrosion damage: two with composite liners and two without.

  9. 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

  10. Module No: 420141Public International Law (1)Module Title: public international law 2, international

    E-Print Network [OSTI]

    Module No: 420141Public International Law (1)Module Title: public international law 2, international human law and international organizations Pre-requisite: Module Type: Department requirementModule Office Phone Academic rank Module coordinator jo.edu.idabbah@philadelphia310397Assistant professor Dr

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

    SciTech Connect (OSTI)

    Russo, Thomas V.

    2013-08-01

    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.

  12. Notes 04. Static load performance of plain journal bearings 

    E-Print Network [OSTI]

    San Andres, Luis

    2010-01-01

    the liquid cavitation pressure, cav PtzP ?),,(? (4.5) More physically sound and appropriate boundary conditions at the onset of the lubricant cavitation region are given later (see Notes 6). Boundary conditions at the film reformation boundary... is not possible. Fortunately, Eqn. (4.10) shows the hydrodynamic pressure is continuous and single valued in the circumferential direction ? No lubricant cavitation will ever occur within the bearing if the magnitude of the side (exit or discharge) pressures...

  13. Notes 01. Modeling of mechanical (lumped parameter) elements 

    E-Print Network [OSTI]

    San Andres, Luis

    2008-01-01

    1 / ? Luis San Andr?s 2008 1.1 Handout # 1 Modeling of Mechanical (Lumped Parameter) Elements The fundamental components of a mechanical system are: masses or inertias, springs (stiffnesses), and dampers. Lumped elements lead to ordinary... into another form of energy (usually heat). Dampers relate the element force (torque) to a translational (angular) velocity. MEEN 617 Notes: Handout 1 / ? Luis San Andr?s 2008 1.2 Our objective: to determine equivalent system elements as those capable...

  14. A Note on Ramsey Size-Linear Graphs

    E-Print Network [OSTI]

    Simonovits, Miklós

    A Note on Ramsey Size-Linear Graphs P.N. Balister,1 R.H. Schelp,1 and M. Simonovits1,2 1 DEPARTMENT is a Ramsey size-linear graph and x,y 2 V(G ) then if we add a sufficiently long path between x and y we obtain a new Ramsey size-linear graph. As a consequence we show that if G is any graph such that every

  15. Notes 01. The fundamental assumptions and equations of lubrication theory 

    E-Print Network [OSTI]

    San Andres, Luis

    2009-01-01

    Safety Data Sheet for further information. Note: This product is not controlled under Canadian WHMIS legislation. The Mobil logotype and the Pegasus design are trademarks of Exxon Mobil Corporation, or one of its subsidiaries. ExxonMobil Lubricants... & Specialties All products may not be available locally. For more information, contact your local sales office or visit www.exxonmobil.com. ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil...

  16. Cover Sheet for Budget Item Predicted Cost Actual Cost Notes

    E-Print Network [OSTI]

    Cover Sheet for Budget Item Predicted Cost Actual Cost Notes Lodging $700.00 Three hotels: 1. $195, $154.00 was used for unintended transportations (taxi, train, bus, etc.) and lodging costs Meal Plan $1.70 10. Bus $1.70 11. Bus $2.83 12. Bus $4.53 13. Tram$3.28 = $96.11 These costs were paid

  17. A note on light geometric graphs Eyal Ackerman

    E-Print Network [OSTI]

    Fox, Jacob

    A note on light geometric graphs Eyal Ackerman Jacob Fox Rom Pinchasi March 19, 2012 Abstract Let G be a geometric graph on n vertices in general position in the plane. We say that G is k-light if no edge e of G than k edges of G. We extend the previous result in [1] and with a shorter argument show that every k-light

  18. Tropism and Equivocation: Notes on Dennet's "Mechanism and Responsibilty"

    E-Print Network [OSTI]

    Strander, George M.

    TROPISM AND EQUIVOCATION: NOTES ON DENNETTS 'MECHANISM AND RESPONSIBILITY' GEORGE M. STRANDER Brown University !What has over the years surfaced as perhaps the central issue in the debate surrounding the problem of free will and determinism... is the question whether determinism is compatible with responsibility. Recently, however, some philosophers have shifted this debate—rightly, I think— asking not whether determinism and responsibility are compatible, but rather whether mechanism...

  19. 221A Lecture Notes 1 HamiltonJacobi Equation

    E-Print Network [OSTI]

    Murayama, Hitoshi

    221A Lecture Notes WKB Method 1 Hamilton­Jacobi Equation We start from the Schr¨odinger equation this equation by using (x, t) = eiS(x,t)/¯h : - S t = 1 2m ( S)2 - i¯h 2m ( 2 S) + V . (2) Assuming = 0, this leads to an equation - S t = 1 2m ( S)2 - i¯h 2m ( 2 S) + V. (3) Now taking the formal limit ¯h 0

  20. IN TODAY'S PAPER International

    E-Print Network [OSTI]

    India's participation in the multi-billion-dollar International Thermonuclear Reactor project which aims to use fusion energy for peaceful purposes. New Delhi, Oct. 27: Almost all key world players, including device to produce thermal energy at the level of an electricity-producing power station. The project

  1. International petroleum statistics report

    SciTech Connect (OSTI)

    1997-05-01

    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.

  2. International Exeter annual report

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    to invest in international engagement are having an impact. As we enter the last year of our current Ambassador Diego Gomez-Pickering, the Ambassador of Mexico to the UK, Exeter, September 2014 #12;annual-fee level of 54% in Life and Environmental Sciences; 35% for Humanities; 26% for Social Sciences

  3. Formula Hybrid International Competition

    E-Print Network [OSTI]

    Carver, Jeffrey C.

    , 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

  4. Internal Control Program

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

    2008-10-28

    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. Supersedes DOE O 413.1A.

  5. Requirements for Xenon International

    SciTech Connect (OSTI)

    Hayes, James C.; Ely, James H.

    2013-09-26

    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.

  6. Internal split field generator

    DOE Patents [OSTI]

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

    2012-01-03

    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.

  7. Reykjavik University International Prospectus

    E-Print Network [OSTI]

    Karlsson, Brynjar

    with leading companies and international collaborators to provide our students with strong academic foundations of Computer Science, School of Science and Engineering and School of Law. We also host a number of research of Computer Science School of Law School of Science and Engineering ISE - Iceland School of Energy RU Open

  8. Rotary internal combustion engine

    SciTech Connect (OSTI)

    Le, L.K.

    1990-11-20

    This patent describes an internal combustion engine comprising; a rotary compressor mechanism; a rotary expander mechanism; and combustion chamber means disposed between the compressor mechanism and the expander mechanism, whereby compressed air is delivered to the combustion chamber through the compressor discharge port, and pressurized gas is delivered from the combustion chamber into the expander mechanism through the pressurized gas intake port.

  9. International Exeter annual report

    E-Print Network [OSTI]

    Buckling, Angus

    -Chancellor's international engagement 66 China and Hong Kong 72 India 76 United States of America 80 United Arab Emirates 86 lead for Internationalisation, for guiding colleagues through another successful year. In addition, I over-reliance on Business School students to fuel expansion. In fact in 2013/14, non-business Colleges

  10. International Energy Policy in

    E-Print Network [OSTI]

    Delaware, University of

    of Energy Policies of the U.S., U.K., Germany, France, Japan, China and Korea November 2013 #12;Mailing IN THE AFTERMATH OF THE FUKUSHIMA NUCLEAR DISASTER: An Analysis of Energy Policies of the U.S., U.K., GermanyInternational Energy Policy in the Aftermath of the Fukushima Nuclear Disaster An Analysis

  11. international summer school 2015

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    in the National Student Survey. Our inclusion in the Russell Group has cemented our reputation as one) · International Relations: Security, Conflict and Peace · Introduction to Accounting · Introduction to English Law The Summer School gave me the opportunity to see the United Kingdom in varying and interesting perspectives I

  12. Et introduksjonskurs EndNote X6 introduksjon Liv Brynhild Aspaas og Jo Forthun -NTNU UB, jan. 2013 2

    E-Print Network [OSTI]

    Malinnikova, Eugenia

    ..................................................................................................................................... 11 Eksempel 3: ISI Web of Science.................................................................................................................................. 19 EndNote Web (http://myendnoteweb.com/) ............................................................................ 20 Eks) Fra ISI Web of Science til EndNote Web

  13. International Faculty & Scholar Office International Center, UC San Diego

    E-Print Network [OSTI]

    California at San Diego, University of

    International Faculty & Scholar Office International Center, UC San Diego Phone (858) 246-1448 Fax --------------------------------------------------------------------------------------------------------------------------------------------------------------- SCHOLAR CERTIFICATION Name of Exchange Visitor: _____________________________________________ UC San Diego Department: _____________________________________________ · I understand that UC San Diego requires me

  14. Office of International Education International Student, Scholar, and Immigration Services

    E-Print Network [OSTI]

    Arnold, Jonathan

    Office of International Education International Student, Scholar, and Immigration Services 1324 Association, EITS, etc.) College of Agricultural and Environmental Sciences College of Education Biomedical College of Agricultural & Environmental Sciences College of Education College of Public Health MCG

  15. International energy indicators. [International and US statistics

    SciTech Connect (OSTI)

    Bauer, E.K. (ed.)

    1980-03-01

    For the international sector, a table of data is first presented followed by corresponding graph of the data for the following: (1) Iran: crude oil capacity, production, and shut-in, 1974 to February 1980; (2) Saudi Arabia (same as Iran); (3) OPEC (ex-Iran and Saudi Arabia); capacity, production, and shut-in, 1974 to January 1980; (4) non-OPEC Free World and US production of crude oil, 1973 to January 1980; (5) oil stocks: Free World, US, Japan, and Europe (landed), 1973 to 1979; (6) petroleum consumption by industrial countries, 1973 to October 1979; (7) USSR crude oil production, 1974 to February 1980; (8) Free World and US nuclear generation capacity, 1973 to January 1980. For the United States, the same data format is used for the following: (a) US imports of crude oil and products 1973 to January 1980; (b) landed cost of Saudi Arabia crude oil in current and 1974 dollars, 1974 to October 1979; (c) US trade in coal, 1973 to 1979; (d) summary of US merchandise trade, 1976 to January 1980; and (e) US energy/GNP ratio (in 1972 dollars), 1947 to 1979.

  16. International Nuclear Security

    SciTech Connect (OSTI)

    Doyle, James E.

    2012-08-14

    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.

  17. Rotary internal combustion engine

    SciTech Connect (OSTI)

    Murray, J.L.; Mosca, J.O.

    1992-02-25

    This patent describes a rotary internal combustion engine. It includes a housing; a cam track internally disposed within the housing and adapted to receive a cam follower; an engine block disposed within the housing, the engine block being relatively rotatable within the housing about a central axis; means connectable to an external drive member for translating the relative rotation of the engine block with respect to the housing into useful work; at least one radially arranged cylinder assembly on the block, each cylinder assembly including a cylinder having a longitudinal axis extending generally radially outwardly from the rotational axis of the block, the cylinder including means defining an end wall, a piston member disposed within the cylinder and adapted to reciprocate within the cylinder; the piston, cylinder and cylinder end wall together.

  18. Internal combustion rotary engine

    SciTech Connect (OSTI)

    Chen, S.P.

    1993-08-24

    An internal combustion rotary engine is described comprising: an internal combustion chamber wherein a combustible fuel-air mixture is ignited for producing a driving gas flow; a central rotor having an outer surface in which at least one group of curved channels circumferentially-and-axially extending without radially extending through the central rotor; and at least one annular rotor each enclosing the central rotor having an inner surface in which a corresponding number of curved channels circumferentially-and-axially extending without radially extending through the annular rotor; when the curved channels in the central rotor communicate with the curved channels in the annular rotor, the driving gas flow circumferentially-and-axially passing between the outer surface of the central rotor and the inner surface of the annular rotor for rotating the central rotor and the annular rotor in opposite directions.

  19. International Journal of Computational Linguistics &

    E-Print Network [OSTI]

    #12;#12;International Journal of Computational Linguistics & Chinese Language Processing The editing of this journal is subsidized by Center for Humanities Research National Science Council in 2009. Aims and Scope International Journal of Computational Linguistics and Chinese Language Processing

  20. International Journal of Computational Linguistics &

    E-Print Network [OSTI]

    #12;#12;International Journal of Computational Linguistics & Chinese Language Processing The editing of this journal is subsidized by Center for Humanities Research National Science Council in 2010. Aims and Scope International Journal of Computational Linguistics and Chinese Language Processing

  1. International Health Global Health Policy--------------------------------------------------------------------------------------

    E-Print Network [OSTI]

    Miyashita, Yasushi

    50 International Health Global Health Policy-------------------------------------------------------------------------------------- http://www.ghp.m.u-tokyo.ac.jp Our mission is to improve population health by enhancing accountability and improving evidence base of global (both domestic and international) health programmes through the provision

  2. International energy outlook 2006

    SciTech Connect (OSTI)

    2006-06-15

    This report presents international energy projections through 2030, prepared by the Energy Information Administration. After a chapter entitled 'Highlights', the report begins with a review of world energy and economic outlook, followed by energy consumption by end-use sector. The next chapter is on world oil markets. Natural gas, world coal market and electricity consumption and supply are then discussed. The final chapter covers energy-related carbon dioxide emissions.

  3. Polarized internal target apparatus

    DOE Patents [OSTI]

    Holt, R.J.

    1984-10-10

    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.

  4. International petroleum statistics report

    SciTech Connect (OSTI)

    1997-11-01

    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.

  5. International petroleum statistics report

    SciTech Connect (OSTI)

    Not Available

    1995-01-01

    This monthly publication provides current 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.

  6. International markets for CCTs

    SciTech Connect (OSTI)

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

    1997-12-31

    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.

  7. Internal dosimetry software comparison 

    E-Print Network [OSTI]

    Fulmer, Judith Renee

    1992-01-01

    , Richland, WA. 32 organ and effective dose equivalents from chronic or acute exposures. CINDY software may be used to assess both annual and committed dose equivalents. Calculations are performed by the software using a differential equations solver... computing system is recommended when using the software, though an IBM AT compatible system may be used when ingrowth of radioactive daughters is not of concern. The CINDY software requires a * International Business Machines, Boca Raton, FL. 33...

  8. The International Linear Collider

    E-Print Network [OSTI]

    Jim Brau; Paul Grannis; Mike Harrison; Michael Peskin; Marc Ross; Harry Weerts

    2013-04-09

    We present a brief summary of the International Linear Collider as documented in the 2013 Technical Design Report. The Technical Design Report has detailed descriptions of the accelerator baseline design for a 500 GeV e+e- linear collider, the R&D program that has demonstrated its feasibility, the physics goals and expected sensitivities, and the description of the ILD and SiD detectors and their capabilities.

  9. Essays on International Trade

    E-Print Network [OSTI]

    Lugovskyy, Oleksandr

    2013-12-31

    Essays on International Trade By Copyright 2013 Oleksandr Lugovskyy Submitted to the Department of Economics and the Faculty of the Graduate School of the University of Kansas in partial fulfillment of the requirements for the degree of Doctor... of Philosophy Committee members Ted Juhl, Chairperson Paul Comolli Joseph Sicilian Alexandre Skiba Bozenna Pasik-Duncan Date defended: August 16, 2013 The Dissertation Committee for Oleksandr Lugovskyy certifies that this is the approved version of the following...

  10. International Bioenergy Trade

    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:Financing Tool Fits the BillDepartment of EnergyDemonstrationDepartment of-International

  11. International petroleum statistics report

    SciTech Connect (OSTI)

    1997-07-01

    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.

  12. International Energy Program Evaluation Conference

    Broader source: Energy.gov [DOE]

    The International Energy Program Evaluation Conference (IEPEC) will be held in Long Beach, California, on Aug. 11-13, 2015.

  13. International Perspective on Fukushima Accident

    Broader source: Energy.gov [DOE]

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

  14. A note on entropy production by advective and diffusive processes in the Madelung quantum fluid

    E-Print Network [OSTI]

    Eyal Heifetz; Eliahu Cohen; Zohar Nussinov

    2015-09-03

    The Madelung equations map the non-relativistic time-dependent Schrodinger equation into hydrodynamic equations of a virtual fluid. In this short note we show that an increase of the quantum fluid's Gibbs entropy is proportional to the expectation value of the Madelung fluid divergence results from advective processes. Therefore, it must be accompanied by expansion of the Madelung fluid. This intuitive result stands in agreement with the consequence of previous energy considerations of the Madelung fluid in which adiabatic expansion increases "disorder" and decreases the internal energy represented by the Fisher information. We also show that unlike diffusive processes, the entropy production is not proportional to the Fisher information, simply because the quantum continuity equation does not obey Fick's second law. Nonetheless, the entropy production is also equal to the expectation value of the inner product between the advective and the diffusive velocities of the Madelung fluid, which are proportional respectively to the real and imaginary parts of the complex momentum. Furthermore, the diffusion coefficient of the Madelung fluid, in its simplest form of ideal gas, gives rise to the lower bound of Heisenberg's uncertainty principle in terms of the gas mean free path and the Brownian momentum.

  15. INTERNATIONAL JOURNAL OF DEVELOPMENT ISSUES

    E-Print Network [OSTI]

    INTERNATIONAL JOURNAL OF DEVELOPMENT ISSUES VOL. 4 · No. 2 December 2005 CONTENTS Jeffrey D. Sachs-97 and the Bulgarian currency board 95 #12;#12;International Journal of Development Issues Vol. 4, No. 2 (2005) 1 Science, University of Sydney, New South Wales, Australia. #12;J.D. Sachs /International Journal

  16. LBL-34682, CBP Note 014, PEP-II/AP Note 3493 Compact Complex Expressions for the Electric Field of 2-D Elliptical Charge

    E-Print Network [OSTI]

    Furman, Miguel

    LBL-34682, CBP Note 014, PEP-II/AP Note 34­93 Compact Complex Expressions for the Electric Field of 2-D Elliptical Charge Distributions Miguel A. Furman Center for Beam Physics Accelerator and Fusion. The formula yields compact and practical expressions for a significant class of distributions. The fact

  17. International science conferences in Santa Fe

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

    International science conferences International science conferences in Santa Fe The conference are 2012 International Conference on Defects in Insulating Materials and Computer...

  18. International linear collider reference design report

    E-Print Network [OSTI]

    Aarons, G.

    2008-01-01

    A. Loew, et al. , “International Linear Collider Technologyfor the International Linear Collider”, in preparation [37]for the International Linear Collider,” in PAC05,http://

  19. International Fuel Services and Commercial Engagement | Department...

    Energy Savers [EERE]

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

  20. Internal Audit OverviewInternal Audit Overview Audit's Role in Governance, Risk Management and Internal Control

    E-Print Network [OSTI]

    Internal Audit OverviewInternal Audit Overview Audit's Role in Governance, Risk Management Activities - Risk Management Scope of Audit Activities - Risk Management · Risk is the possibility exposures to risk, assessing the effectiveness of the University's risk management system, and contributing

  1. Tutorial Note on Merging Matrix Elements with Parton Showers

    E-Print Network [OSTI]

    Thomas Rössler

    2015-03-26

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

  2. The Looking Glass Self: Introductory Notes on Anorexia Nervosa

    E-Print Network [OSTI]

    Wax, Murray L.; Cassell, Joan

    1990-01-01

    THE LOOKING GLASS SELF: INTRODUCTORY NOTES ON ANOREXIA NERVOSA Murray L. Wax Washington University Joan Cassell Washington University Mid-American Review of Sociology, 1990, Vol. XIV, No. 1-2:135-143. It follows that the body is the most... and the 'looking-glass self' reflected in the reactions of others (Bourdieu 1984, p. 190, 207).1 Anorexia nervosa is a disorder peculiar to Western society and culture. Although the sufferer is an individual, her problems are rooted in family relationships...

  3. Notes 02. Dynamic response of second order mechanical systems 

    E-Print Network [OSTI]

    San Andres, Luis

    2008-01-01

    : Handout 2a ? Luis San Andr?s (2008) 2-1 Handout #2a (pp. 1-39) Dynamic Response of Second Order Mechanical Systems with Viscous Dissipation forces 2 () 2 ext t dX dX MDKXF dt dt ++= Free Response to initial conditions and F (t) = 0..., Underdamped, Critically Damped and Overdamped Systems Free Response for system with Coulomb (Dry) friction Forced Response for Step Loading F (t) = F o MEEN 617 Notes: Handout 2a ? Luis San Andr?s (2008) 2-2 Second Order Mechanical...

  4. Note on Structure Formation from Cosmic String Wakes

    E-Print Network [OSTI]

    Duplessis, Francis

    2013-01-01

    The search for cosmic strings has been of renewed interest with the advent of precision cosmology. In this note we give a quantitative description of the nonlinear matter density fluctuations that can form from a scaling network of cosmic string wakes. Specifically, we compute the distribution of dark matter halos. These halos would possess strong correlations in position space that should have survived until today. We also discuss the challenges involved in their detection due to their small size and the complex dynamics of their formation.

  5. Notes from Financial and Physical Oil Market Linkages

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shinesSolarNew scholarshipThreeFebruaryMuseumEffect of photodiode aluminumNotes

  6. EIA - Greenhouse Gas Emissions - Table-Figure Notes and Sources

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979Coal4Cubic43,728 243,242ConsumersAnnualA1. Notes and

  7. INTERNAL REPAIR OF PIPELINES

    SciTech Connect (OSTI)

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

    2004-04-12

    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.

  8. Internal combustion engine

    SciTech Connect (OSTI)

    Evans, H.G.; Speer, S.

    1991-12-31

    This patent describes improvement in a 2-cycle, diesel cycle internal combustion engine comprising a single in-line engine block, internal wall surfaces defining at least one cylinder within the engine block, the central longitudinal axis of each cylinder being within a common plane extending longitudinally of the engine block, the axially extending internal wall surface of each cylinder being closed at one end and having at least one air intake port therethrough, a piston axially and reciprocally movable within each cylinder over a permitted stroke distance, so as to alternately cover and expose each air intake port for a finite time period; an exhaust port at the closed end of the cylinder above the piston, and a mechanically operated valve for opening and closing such exhaust port located immediately adjacent such port, a substantially rigid connecting rod pivotably connected at one end of each piston, and a crankshaft, rotatably connected to the second end of each connecting rod, such that the crankshaft is caused to rotate connecting means between the piston and the connecting rod. The improvement comprises the diameter of the cylinder is greater than the permitted stroke distance of the piston within the cylinder, and the axis of the crankshaft is parallel to and laterally offset from the common plane by a distance sufficient to form an angle alpha between the connecting rod and the axis of the cylinder, when the piston is at top-dead center, of at least about 12 degrees, such that the time during which each air intake port is exposed is increased when the direction of crankshaft rotation is opposite to the direction of the crankshaft offset from the common plane.

  9. Internal absorber solar collector

    DOE Patents [OSTI]

    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)

    1981-01-01

    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.

  10. International energy annual 1995

    SciTech Connect (OSTI)

    1996-12-01

    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.

  11. The International Linear Collider

    E-Print Network [OSTI]

    Marco Battaglia

    2007-05-28

    The International Linear Collider (ILC) is the next large scale project in accelerator particle physics. Colliding electrons with positrons at energies from 0.3 TeV up to about 1 TeV, the ILC is expected to provide the accuracy needed to complement the LHC data and extend the sensitivity to new phenomena at the high energy frontier and answer some of the fundamental questions in particle physics and in its relation to Cosmology. This paper reviews some highlights of the ILC physics program and some of the major challenges for the accelerator and detector design.

  12. International energy annual, 1993

    SciTech Connect (OSTI)

    1995-05-08

    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.

  13. Internal Policy Library

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIsProcess RelevantInternal Audit

  14. Internal Revenue Service

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIsProcess RelevantInternal AuditDrawings/Photos | Links1

  15. Internal Revenue Service

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIsProcess RelevantInternal AuditDrawings/Photos |

  16. Internal Revenue Service

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIsProcess RelevantInternal AuditDrawings/Photos |5-9651

  17. International Energy Statistics - EIA

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural Gas Reserves AdjustmentsDecadeSign upInternational >

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

    E-Print Network [OSTI]

    Aris, John P.

    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

  19. Sub-arcsec mid-IR observations of NGC 1614: Nuclear star-formation or an intrinsically X-ray weak AGN?

    E-Print Network [OSTI]

    Pereira-Santaella, M; Alonso-Herrero, A; Usero, A; Díaz-Santos, T; García-Burillo, S; Alberdi, A; Gonzalez-Martin, O; Herrero-Illana, R; Imanishi, M; Levenson, N A; Pérez-Torres, M A; Almeida, C Ramos

    2015-01-01

    We present new mid-infrared N-band spectroscopy and Q-band photometry of the local luminous infrared galaxy NGC1614, one of the most extreme nearby starbursts. We analyze the mid-IR properties of the nucleus (central 150 pc) and four regions of the bright circumnuclear (diameter~600 pc) star-forming (SF) ring of this object. The nucleus differs from the circumnuclear SF ring by having a strong 8-12 micron continuum (low 11.3 micron PAH equivalent width). These characteristics, together with the nuclear X-ray and sub-mm properties, can be explained by an X-ray weak active galactic nucleus (AGN), or by peculiar SF with a short molecular gas depletion time and producing an enhanced radiation field density. In either case, the nuclear luminosity (L(IR) energy output in this object. We also compare three star-formation rate (SFR) tracers (Pa$\\alpha$, 11.3 micron PAH, and 24 micron emissions) at...

  20. Deep Chandra, HST-COS, and Megacam Observations of the Phoenix Cluster: Extreme Star Formation and AGN Feedback on Hundred Kiloparsec Scales

    E-Print Network [OSTI]

    McDonald, M; van Weeren, R J; Applegate, D E; Bayliss, M; Bautz, M W; Benson, B A; Carlstrom, J E; Bleem, L E; Chatzikos, M; Edge, A C; Fabian, A C; Garmire, G P; Hlavacek-Larrondo, J; Jones-Forman, C; Mantz, A B; Miller, E D; Stalder, B; Veilleux, S; Zuhone, J A

    2015-01-01

    We present new ultraviolet, optical, and X-ray data on the Phoenix galaxy cluster (SPT-CLJ2344-4243). Deep optical imaging reveals previously-undetected filaments of star formation, extending to radii of ~50-100 kpc in multiple directions. Combined UV-optical spectroscopy of the central galaxy reveals a massive (2x10^9 Msun)), young (~4.5 Myr) population of stars, consistent with a time-averaged star formation rate of 610 +/- 50 Msun/yr. We report a strong detection of OVI(1032,1038) which appears to originate primarily in shock-heated gas, but may contain a substantial contribution (>1000 Msun/yr) from the cooling intracluster medium. We confirm the presence of deep X-ray cavities in the inner ~10 kpc, which are amongst the most extreme examples of radio-mode feedback detected to date, implying jet powers of 2-7 x10^45 erg/s. We provide evidence that the AGN inflating these cavities may have only recently transitioned from "quasar-mode" to "radio-mode", and may currently be insufficient to completely offset ...

  1. International Clean Energy Coalition

    SciTech Connect (OSTI)

    Erin Skootsky; Matt Gardner; Bevan Flansburgh

    2010-09-28

    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.

  2. International petroleum statistics report

    SciTech Connect (OSTI)

    1995-07-27

    The International Petroleum Statistics Report presents data on international oil production, demand, imports, and 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.

  3. International petroleum statistics report

    SciTech Connect (OSTI)

    1995-11-01

    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.

  4. International petroleum statistics report

    SciTech Connect (OSTI)

    1996-10-01

    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.

  5. International petroleum statistics report

    SciTech Connect (OSTI)

    1996-05-01

    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.

  6. International energy outlook 1998

    SciTech Connect (OSTI)

    1998-04-01

    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.

  7. The International Linear Collider

    E-Print Network [OSTI]

    Barish, Barry

    2013-01-01

    In this article, we describe the key features of the recently completed technical design for the International Linear Collider (ILC), a 200-500 GeV linear electron-positron collider (expandable to 1 TeV) that is based on 1.3 GHz superconducting radio-frequency (SCRF) technology. The machine parameters and detector characteristics have been chosen to complement the Large Hadron Collider physics, including the discovery of the Higgs boson, and to further exploit this new particle physics energy frontier with a precision instrument. The linear collider design is the result of nearly twenty years of R&D, resulting in a mature conceptual design for the ILC project that reflects an international consensus. We summarize the physics goals and capability of the ILC, the enabling R&D and resulting accelerator design, as well as the concepts for two complementary detectors. The ILC is technically ready to be proposed and built as a next generation lepton collider, perhaps to be built in stages beginning as a Hig...

  8. Nanoparticle Emissions from Internal Combustion Engines | Department...

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

    Nanoparticle Emissions from Internal Combustion Engines Nanoparticle Emissions from Internal Combustion Engines 2004 Diesel Engine Emissions Reduction (DEER) Conference...

  9. INTERNAL REPAIR OF PIPELINES

    SciTech Connect (OSTI)

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

    2004-12-31

    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.

  10. INTERNAL REPAIR OF PIPELINES

    SciTech Connect (OSTI)

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

    2005-07-20

    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.

  11. INTERNAL REPAIR OF PIPELINES

    SciTech Connect (OSTI)

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

    2004-08-17

    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.

  12. International Oil and Gas Board International Oil and Gas Board...

    Open Energy Info (EERE)

    Board International Oil and Gas Board Address Place Zip Website Abu Dhabi Supreme Petroleum Council Abu Dhabi Supreme Petroleum Council Abu Dhabi United Arab Emirates http www...

  13. Mexican Internal and International Migration: Empirical Evidence from Related Theories

    E-Print Network [OSTI]

    von Scheven, Elsa Beatrice

    2015-01-01

    and Undocumented Migration from Mexico. ” In Immigrationand S. Martin 1998 Migration Between Mexico and the UnitedRural-origin Internal Migration in Mexico. ” Social Science

  14. MA 16200 Study Guide for material since Exam 3, Fall 2014 NOTE ...

    E-Print Network [OSTI]

    2014-11-28

    MA 16200 Study Guide for material since Exam 3, Fall 2014. NOTE: SINCE THE FINAL EXAM WILL COVER ALL THE MATERIAL OF THE. COURSE, YOU ...

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

  19. Lecture Notes in Computer Science Edited by G. Goos, J. Hartmanis and J. van Leeuwen

    E-Print Network [OSTI]

    Dershowitz, Nachum

    ; London ; Milan ; Paris ; Tokyo 9 Springer, 1995 (Lecture notes in computer science ; Vol. 968) ISBN 3 ............................................... 1 A Calculus for Rippling David A. Basin and Toby Walsh

  20. International District Energy Association

    Broader source: Energy.gov [DOE]

    Since its formation in 1909, the International District Energy Association (IDEA) has served as a principal industry advocate and management resource for owners, operators, developers, and suppliers of district heating and cooling systems in cities, campuses, bases, and healthcare facilities. Today, with over 1,400 members in 26 countries, IDEA continues to organize high-quality technical conferences that inform, connect, and advance the industry toward higher energy efficiency and lower carbon emissions through innovation and investment in scalable sustainable solutions. With the support of DOE, IDEA performs industry research and market analysis to foster high impact projects and help transform the U.S. energy industry. IDEA was an active participant in the original Vision and Roadmap process and has continued to partner with DOE on combined heat and power (CHP) efforts across the country.