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1

Professor Harry Hammond Hess  

Science Journals Connector (OSTI)

... THE death of Harry Hess from a heart attack on August 25 was a sad loss to the earth ... to be moving at speeds varying from 1 to 5 cm yr-1. Happily, Harry Hess lived to see a most remarkable change in the attitude of earth scientists during ...

1969-10-25T23:59:59.000Z

2

Michael Hess | Department of Energy  

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

Michael Hess Michael Hess About Us Michael Hess - Former Digital Communications Specialist, Office of Public Affairs Michael Hess Michael joined the Office of New Media at the Energy Department in August 2011 to write and promote stories about science technology, basic and applied science, technology transfer, commercialization, research and development, and the National Labs. In a previous life, Michael was an enlisted Air Force public affairs representative where he worked as the editor of RAF Lakenheath's Jet48 before being stationed in Tucson as a media relations specialist. Michael proudly confesses to being an Ohio native where most of his family still lives. Also within Ohio's fair borders he studied journalism and linguistics at Ohio University. Michael prides himself on lightning-quick

3

38017,"AMERADA HESS CORP ",1,130,"MOTOR...  

U.S. Energy Information Administration (EIA) Indexed Site

SUPPLY CO ",55,850,"UNFINISHED OILS, RESIDUUM",5312,"CORPUS CHRIS, TX","TEXAS",3,428,"GERMANY",543,0,0,"VALERO REFG CO ","CORPUS CHRISTI","TX","TEXAS",3 38017,"VALERO MKTG &...

4

Hydrology and Earth System Sciences, 9, 549568, 2005 www.copernicus.org/EGU/hess/hess/9/549/  

E-Print Network [OSTI]

the various objectives are sensitive to different parameters. The simulated water balance shows that 15Hydrology and Earth System Sciences, 9, 549­568, 2005 www.copernicus.org/EGU/hess/hess/9/549/ SRef-ID: 1607-7938/hess/2005-9-549 European Geosciences Union Hydrology and Earth System Sciences Multi

Boyer, Edmond

5

Hess Retail Natural Gas and Elec. Acctg. (Rhode Island) | Open...  

Open Energy Info (EERE)

for 2010 - File22010" Retrieved from "http:en.openei.orgwindex.php?titleHessRetailNaturalGasandElec.Acctg.(RhodeIsland)&oldid786295" Categories: EIA Utility...

6

Hess Retail Natural Gas and Elec. Acctg. (District of Columbia...  

Open Energy Info (EERE)

EIA-861 Final Data File for 2010 - File22010" Retrieved from "http:en.openei.orgwindex.php?titleHessRetailNaturalGasandElec.Acctg.(DistrictofColumbia)&oldid786281...

7

Hess Retail Natural Gas and Elec. Acctg. (Maine) | Open Energy...  

Open Energy Info (EERE)

for 2010 - File22010" Retrieved from "http:en.openei.orgwindex.php?titleHessRetailNaturalGasandElec.Acctg.(Maine)&oldid786283" Categories: EIA Utility Companies and...

8

Hess Retail Natural Gas and Elec. Acctg. (Pennsylvania) | Open...  

Open Energy Info (EERE)

(Pennsylvania) Jump to: navigation, search Name: Hess Retail Natural Gas and Elec. Acctg. Place: Pennsylvania References: EIA Form EIA-861 Final Data File for 2010 - File220101...

9

Hess Retail Natural Gas and Elec. Acctg. (Maryland) | Open Energy...  

Open Energy Info (EERE)

"EIA Form EIA-861 Final Data File for 2010 - File22010" Retrieved from "http:en.openei.orgwindex.php?titleHessRetailNaturalGasandElec.Acctg.(Maryland)&oldid786285...

10

Hess Retail Natural Gas and Elec. Acctg. (New Hampshire) | Open...  

Open Energy Info (EERE)

Form EIA-861 Final Data File for 2010 - File22010" Retrieved from "http:en.openei.orgwindex.php?titleHessRetailNaturalGasandElec.Acctg.(NewHampshire)&oldid786289...

11

Hess Retail Natural Gas and Elec. Acctg. (Delaware) | Open Energy...  

Open Energy Info (EERE)

"EIA Form EIA-861 Final Data File for 2010 - File22010" Retrieved from "http:en.openei.orgwindex.php?titleHessRetailNaturalGasandElec.Acctg.(Delaware)&oldid786279...

12

Hess Retail Natural Gas and Elec. Acctg. (Connecticut) | Open...  

Open Energy Info (EERE)

"EIA Form EIA-861 Final Data File for 2010 - File22010" Retrieved from "http:en.openei.orgwindex.php?titleHessRetailNaturalGasandElec.Acctg.(Connecticut)&oldid786880...

13

Hess Retail Natural Gas and Elec. Acctg. (Massachusetts) | Open...  

Open Energy Info (EERE)

"EIA Form EIA-861 Final Data File for 2010 - File22010" Retrieved from "http:en.openei.orgwindex.php?titleHessRetailNaturalGasandElec.Acctg.(Massachusetts)&oldid78628...

14

10 Questions for a Spectroscopy Expert: Nancy Hess | Department of Energy  

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

Spectroscopy Expert: Nancy Hess Spectroscopy Expert: Nancy Hess 10 Questions for a Spectroscopy Expert: Nancy Hess April 14, 2011 - 4:34pm Addthis Nancy Hess | Photo Courtesy of Pacific Northwest National Lab (PNNL) Nancy Hess | Photo Courtesy of Pacific Northwest National Lab (PNNL) Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs "I have always enjoyed the beauty and the complexity of processes in the natural world -- Spectroscopy gives you that insight." Nancy Hess, Spectroscopy Expert Meet Nancy Hess -- an expert in spectroscopy (i.e. the change in light intensity and/or frequency resulting from its interaction with matter that gives information about electronic structure, geometry and chemical bonds). At Pacific Northwest National Lab (PNNL), she leads the

15

Sequential decoupling of negative-energy states in Douglas-Kroll-Hess theory  

E-Print Network [OSTI]

Here, we review the historical development, current status, and prospects of Douglas--Kroll--Hess theory as a quantum chemical relativistic electrons-only theory.

Reiher, Markus

2015-01-01T23:59:59.000Z

16

Hess Retail Natural Gas and Elec. Acctg. (New York) | Open Energy...  

Open Energy Info (EERE)

for 2010 - File22010" Retrieved from "http:en.openei.orgwindex.php?titleHessRetailNaturalGasandElec.Acctg.(NewYork)&oldid786291" Categories: EIA Utility Companies...

17

E-Print Network 3.0 - amerada hess corp Sample Search Results  

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

and Medicine 45 GEOPHYSICS, VOL. 60, NO. 2 (MARCH-APRIL 1995); P. 580488, 8 FIGS. Limited-view diffraction tomography in a Summary: (Grant no. 13 220), and partly by the...

18

Stochastic Acceleration in the Galactic Center HESS Source  

E-Print Network [OSTI]

Stochastic acceleration of electrons interacting resonantly with a turbulent magnetic field in a small accretion torus appears to be the likely mechanism responsible for much of Sagittarius A*'s millimeter and shorter wavelength spectrum. The longer wavelength radiation is produced at larger radii by electrons either diffusing from smaller scales or accelerated in situ. An important prediction of this model is the ejection of a significant flux of relativistic protons from a magnetic-field-dominated acceleration site into the wind-shocked medium surrounding the black hole. Recently, several air Cerenkov telescopes, notably HESS, have detected TeV emission from the Galactic center, with characteristics hinting at a p-p-induced pion decay process for the \\gamma-ray emission. Given (1) the size of this acceleration region measured in the radio band and (2) the wind-injected ISM mapped with Chandra using the diffuse X-rays, it is feasible to test the idea that protons accelerated within \\~20 Schwarzschild radii of the black hole produce the TeV emission farther out. We show a fraction of TeV protons scattering about once within ~3 pc of Sagittarius A* and the proton power (~10^37 erg s^-1) produced in concert with the 7 mm radio emission matches the TeV luminosity well. This model explains why the TeV source does not vary on a timescale of a year or less. The particle cascade generated by the p-p scatterings also produces bremsstrahlung, inverse Compton, and synchrotron emission at longer wavelengths from secondary particles. We compare these with current measurements and demonstrate that GLAST will detect this source during its one-year all-sky survey.

Siming Liu; Fulvio Melia; Vahe Petrosian; Marco Fatuzzo

2006-09-16T23:59:59.000Z

19

Contingent robot behaviors from self-referential dynamical systems Ralf Der, Frank Hesse and Rene Liebscher  

E-Print Network [OSTI]

Contingent robot behaviors from self-referential dynamical systems Ralf Der, Frank Hesse and Ren and a challenging objective for autonomous robots. In our earlier work we introduced homeokinesis ­ the dynamical-regulating dynamical system. Mathematical arguments show that the robot behaviors emerging from this are both

Der, Ralf

20

VERY LONG BASELINE INTERFEROMETRY SEARCH FOR THE RADIO COUNTERPART OF HESS J1943+213  

SciTech Connect (OSTI)

HESS J1943+213, a TeV point source close to the Galactic plane recently discovered by the H.E.S.S. Collaboration, was proposed to be an extreme BL Lacertae object, though a pulsar wind nebula (PWN) nature could not be completely discarded. To investigate its nature, we performed high-resolution radio observations with the European Very Long Baseline Interferometry Network (EVN) and reanalyzed archival continuum and H I data. The EVN observations revealed a compact radio counterpart of the TeV source. The low brightness temperature and the resolved nature of the radio source are indications against the beamed BL Lacertae hypothesis. The radio/X-ray source appears immersed in a {approx}1' elliptical feature, suggesting a possible galactic origin (PWN nature) for the HESS source. We found that HESS J1943+213 is located in the interior of a {approx}1 Degree-Sign diameter H I feature and explored the possibility of them being physically related.

Gabanyi, K. E. [Konkoly Observatory, Research Centre for Astronomy and Earth Sciences of the Hungarian Academy of Sciences, P.O. Box 67, Budapest H-1525 (Hungary)] [Konkoly Observatory, Research Centre for Astronomy and Earth Sciences of the Hungarian Academy of Sciences, P.O. Box 67, Budapest H-1525 (Hungary); Dubner, G.; Giacani, E. [Instituto de Astronomia y Fisica del Espacio (CONICET-UBA), CC 67, Suc. 28, 1428 Buenos Aires (Argentina)] [Instituto de Astronomia y Fisica del Espacio (CONICET-UBA), CC 67, Suc. 28, 1428 Buenos Aires (Argentina); Paragi, Z.; Pidopryhora, Y. [Joint Institute for VLBI in Europe, Postbus 2, 7990 AA Dwingeloo (Netherlands)] [Joint Institute for VLBI in Europe, Postbus 2, 7990 AA Dwingeloo (Netherlands); Frey, S., E-mail: gabanyi@konkoly.hu [FOeMI Satellite Geodetic Observatory, P.O. Box 585, H-1592 Budapest (Hungary)

2013-01-01T23:59:59.000Z

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


21

On the essential spectrum of the Jansen-Hess operator for two-electron ions  

E-Print Network [OSTI]

Based on the HVZ theorem and dilation analyticity of the pseudorelativistic no-pair Jansen-Hess operator, it is shown that for subcritical potential strength (Z < 90) the singular continuous spectrum is absent. The bound is slightly higher (Z < 102) for the Brown-Ravenhall operator whose eigenvalues are, by the virial theorem, confined to <2m if Z<50.math/m

D. H. Jakubassa-Amundsen

2006-11-15T23:59:59.000Z

22

HESS Observations of the Galactic Center Region and Their Possible Dark Matter Interpretation  

Science Journals Connector (OSTI)

The detection of ? rays from the source HESS J1745-290 in the Galactic Center (GC) region with the High Energy Spectroscopic System (HESS) array of Cherenkov telescopes in 2004 is presented. After subtraction of the diffuse ?-ray emission from the GC ridge, the source is compatible with a point source with spatial extent less than 1.2?(stat) (95% C.L.). The measured energy spectrum above 160GeV is compatible with a power law with photon index of 2.250.04(stat)0.10(syst) and no significant flux variation is detected. It is finally found that the bulk of the very high energy emission must have non-dark-matter origin.

F. Aharonian et al. (HESS Collaboration)

2006-11-30T23:59:59.000Z

23

A Possible Link Between the Galactic Center HESS Source and Sgr A*  

E-Print Network [OSTI]

Recently, HESS and other air Cerenkov telescopes have detected a source of TeV gamma-rays coincident with the Galactic center. It is not yet clear whether the gamma-rays are produced via leptonic or hadronic processes, so it is important to consider possible acceleration sites for the charged particles which produce the gamma-rays. One exciting possibility for the origin of these particles is the central black hole, Sgr A*, where the turbulent magnetic fields close to the event horizon can accelerate protons to TeV energies. Using a realistic model of the density distribution in a 6 pc x 6 pc x 6pc cube at the Galactic center, we here calculate the trajectories followed by these TeV protons as they gyrate through the turbulent medium surrounding Sgr A*. Diffusing out from the black hole, the protons produce TeV gamma-rays via pi^0 decay following a collision with a proton in the surrounding medium. After following over 222,000 such trajectories, we find that the circumnuclear ring around Sgr A* can reproduce the observed 0.1-100 TeV HESS spectrum and flux if the protons are injected into this medium with an effective power-law index of 0.75, significantly harder than the observed photon index of 2.25. The total energy in the steady-state 1-40 TeV proton population surrounding Sgr A* is inferred to be approx 5x10^{45} ergs. Only 31% of the emitted 1-100 TeV protons encounter the circumnuclear torus, leaving a large flux of protons that diffuse outward to contribute to the Galactic ridge emission observed by HESS on scales of >~ 1 degree.

D. R. Ballantyne; Fulvio Melia; Siming Liu; Roland M. Crocker

2007-02-13T23:59:59.000Z

24

VHE gamma-ray Emitting Pulsar Wind Nebulae Discovered by H.E.S.S.  

SciTech Connect (OSTI)

Recent advances in very-high-energy (VHE) gamma-ray astronomy have opened a new observational window on the physics of pulsars. The high sensitivity of current imaging atmospheric Cherenkov telescopes, and in particular of the H.E.S.S. array, has already led to the discovery of about a dozen VHE-emitting pulsar wind nebulae (PWNe) and PWN candidates. These include the plerions in the composite supernova remnants MSH 15-52, G21.5-0.9, Kes 75, and Vela, two sources in the Kookaburra, and the nebula of PSR B1823-13. This VHE emission is generally interpreted as inverse Compton emission from the relativistic electrons and positrons accelerated by the pulsar and its wind; as such, it can yield a more direct spatial and spectral view of the accelerated particles than can be inferred from observations of their synchrotron emission. The VHE-emitting PWNe detected by the H.E.S.S. telescopes are reviewed and the implications for pulsar physics discussed.

Gallant, Y.A.; /Montpellier U.; Carrigan, S.; /Heidelberg, Max Planck Inst.; Djannati-Atai, A.; /APC, Paris; Funk, S.; /KIPAC, Menlo Park; Hinton, J.A.; /Leeds U.; Hoppe, S.; /Heidelberg, Max Planck Inst.; de Jager, O.C.; /Potchefstroom U.; Khelifi, B.; /Ecole Polytechnique; Komin, Nu.; /Montpellier U.; Kosack, K.; /Heidelberg, Max Planck Inst.; Lemiere, A. /APC, Paris; Masterson, C.; /Dublin Inst.

2008-06-05T23:59:59.000Z

25

X-Ray Observations of Unidentified H.E.S.S. Gamma-Ray Sources  

SciTech Connect (OSTI)

In a survey of the inner part of the Galaxy, performed with the H.E.S.S. Instrument (High energy stereoscopic system) in 2004 and 2005, a large number of new unidentified very high energy (VHE) {gamma}-ray sources above an energy of 100 GeV was discovered. Often the {gamma}-ray spectra in these sources reach energies of up to {approx} 10 TeV. These are the highest energy particles ever attributed to single astrophysical objects. While a few of these sources can be identified at other wavebands, most of these sources remain unidentified so far. A positive identification of these new g-ray sources with a counterpart object at other wavebands requires (a) a positional coincidence between the two sources,( b) a viable {gamma}-ray emission mechanism and (c) a consistent multiwavelength behavior of the two sources. X-ray observations with satellites such as XMM-Newton, Chandra or Suzaku provide one of the best channels to studying these enigmatic {gamma}-ray sources at other wavebands, since they combine high angular resolution and sensitivity with the ability to access non-thermal electrons through their synchrotron emission. We therefore have started a dedicated program to investigate VHE {gamma}-ray sources with high-sensitivity X-ray instruments.

Funk, S.; /SLAC

2007-10-10T23:59:59.000Z

26

SUZAKU OBSERVATIONS OF THE NON-THERMAL SUPERNOVA REMNANT HESS J1731-347  

SciTech Connect (OSTI)

A detailed analysis of the non-thermal X-ray emission from the northwestern and southern parts of the supernova remnant (SNR) HESS J1731-347 with Suzaku is presented. The shell portions covered by the observations emit hard and lineless X-rays. The spectrum can be reproduced by a simple absorbed power-law model with a photon index {Gamma} of 1.8-2.7 and an absorption column density N{sub H} of (1.0-2.1) Multiplication-Sign 10{sup 22} cm{sup -2}. These quantities change significantly from region to region; the northwestern part of the SNR has the hardest and most absorbed spectrum. The western part of the X-ray shell has a smaller curvature than the northwestern and southern shell segments. A comparison of the X-ray morphology to the very high energy gamma-ray and radio images was performed. The efficiency of the electron acceleration and the emission mechanism in each portion of the shell are discussed. Thermal X-ray emission from the SNR was searched for but could not be detected at a significant level.

Bamba, Aya; Yamazaki, Ryo [Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258 (Japan); Puehlhofer, Gerd; Klochkov, Dmitry [Institut fuer Astronomie und Astrophysik, Universitaet Tuebingen, Sand 1, D-72076 Tuebingen (Germany); Acero, Fabio [Laboratoire Univers et Particules de Montpellier, Universite Montpellier 2, CNRS/IN2P3, CC 72, Place Eugene Bataillon, F-34095 Montpellier (France); Tian Wenwu [National Astronomical Observatories, CAS, Beijing 100012 (China); Li Zhiyuan [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Horns, Dieter [Institut fuer Experimentalphysik, Universitaet Hamburg, Luruper Chaussee 149, D-22761 Hamburg (Germany); Kosack, Karl [CEA Saclay, DSM/IRFU, F-91191 Gif-sur-Yvette (France); Komin, Nukri [Laboratoire d'Annecy-le-Vieux de Physique des Particules, Universite de Savoie, CNRS/IN2P3, F-74941 Annecy-le-Vieux (France)

2012-09-10T23:59:59.000Z

27

Analytical energy gradient based on spin-free infinite-order Douglas-Kroll-Hess method with local unitary transformation  

SciTech Connect (OSTI)

In this study, the analytical energy gradient for the spin-free infinite-order Douglas-Kroll-Hess (IODKH) method at the levels of the Hartree-Fock (HF), density functional theory (DFT), and second-order Mller-Plesset perturbation theory (MP2) is developed. Furthermore, adopting the local unitary transformation (LUT) scheme for the IODKH method improves the efficiency in computation of the analytical energy gradient. Numerical assessments of the present gradient method are performed at the HF, DFT, and MP2 levels for the IODKH with and without the LUT scheme. The accuracies are examined for diatomic molecules such as hydrogen halides, halogen dimers, coinage metal (Cu, Ag, and Au) halides, and coinage metal dimers, and 20 metal complexes, including the fourthsixth row transition metals. In addition, the efficiencies are investigated for one-, two-, and three-dimensional silver clusters. The numerical results confirm the accuracy and efficiency of the present method.

Nakajima, Yuya; Seino, Junji [Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Tokyo 169-8555 (Japan)] [Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Tokyo 169-8555 (Japan); Nakai, Hiromi, E-mail: nakai@waseda.jp [Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Tokyo 169-8555 (Japan) [Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Tokyo 169-8555 (Japan); Research Institute for Science and Engineering, Waseda University, Tokyo 169-8555 (Japan); CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan); Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520 (Japan)

2013-12-28T23:59:59.000Z

28

The 2012 flare of PG 1553+113 seen with H.E.S.S. and Fermi-LAT  

E-Print Network [OSTI]

Very high energy (VHE, $E>$100 GeV) $\\gamma$-ray flaring activity of the high-frequency peaked BL Lac object \\pg\\ has been detected by the \\hess\\ telescopes. The flux of the source increased by a factor of 3 during the nights of 2012 April 26 and 27 with respect to the archival measurements with hint of intra-night variability. No counterpart of this event has been detected in the \\fla\\ data. This pattern is consistent with VHE $\\gamma$ ray flaring being caused by the injection of ultrarelativistic particles, emitting $\\gamma$ rays at the highest energies. The dataset offers a unique opportunity to constrain the redshift of this source at \\bestz\\ using a novel method based on Bayesian statistics. The indication of intra-night variability is used to introduce a novel method to probe for a possible Lorentz Invariance Violation (LIV), and to set limits on the energy scale at which Quantum Gravity (QG) effects causing LIV may arise. For the subluminal case, the derived limits are $\\textrm{E}_{\\rm QG,1}>4.10\\times...

Abramowski, A; Benkhali, F Ait; Akhperjanian, A G; Angner, E O; Backes, M; Balenderan, S; Balzer, A; Barnacka, A; Becherini, Y; Tjus, J Becker; Berge, D; Bernhard, S; Bernlhr, K; Birsin, E; Biteau, J; Bttcher, M; Boisson, C; Bolmont, J; Bordas, P; Bregeon, J; Brun, F; Brun, P; Bryan, M; Bulik, T; Carrigan, S; Casanova, S; Chadwick, P M; Chakraborty, N; Chalme-Calvet, R; Chaves, R C G; Chrtien, M; Colafrancesco, S; Cologna, G; Conrad, J; Couturier, C; Cui, Y; Dalton, M; Davids, I D; Degrange, B; Deil, C; deWilt, P; Djannati-Ata, A; Domainko, W; Donath, A; Drury, L O'C; Dubus, G; Dutson, K; Dyks, J; Dyrda, M; Edwards, T; Egberts, K; Eger, P; Espigat, P; Farnier, C; Fegan, S; Feinstein, F; Fernandes, M V; Fernandez, D; Fiasson, A; Fontaine, G; Frster, A; F\\ssling, M; Gabici, S; Gajdus, M; Gallant, Y A; Garrigoux, T; Giavitto, G; Giebels, B; Glicenstein, J F; Gottschall, D; Grondin, M -H; Grudzi?ska, M; Hadsch, D; Hffner, S; Hahn, J; Harris, J; Heinzelmann, G; Henri, G; Hermann, G; Hervet, O; Hillert, A; Hinton, J A; Hofmann, W; Hofverberg, P; Holler, M; Horns, D; Ivascenko, A; Jacholkowska, A; Jahn, C; Jamrozy, M; Janiak, M; Jankowsky, F; Jung, I; Kastendieck, M A; Katarzy?ski, K; Katz, U; Kaufmann, S; Khlifi, B; Kieffer, M; Klepser, S; Klochkov, D; Klu?niak, W; Kolitzus, D; Komin, Nu; Kosack, K; Krakau, S; Krayzel, F; Krger, P P; Laffon, H; Lamanna, G; Lefaucheur, J; Lefranc, V; Lemire, A; Lemoine-Goumard, M; Lenain, J -P; Lohse, T; Lopatin, A; Lu, C -C; Marandon, V; Marcowith, A; Marx, R; Maurin, G; Maxted, N; Mayer, M; McComb, T J L; Mhault, J; Meintjes, P J; Menzler, U; Meyer, M; Mitchell, A M W; Moderski, R; Mohamed, M; Mor, K; Moulin, E; Murach, T; de Naurois, M; Niemiec, J; Nolan, S J; Oakes, L; Odaka, H; Ohm, S; Opitz, B; Ostrowski, M; Oya, I; Panter, M; Parsons, R D; Arribas, M Paz; Pekeur, N W; Pelletier, G; Perez, J; Petrucci, P -O; Peyaud, B; Pita, S; Poon, H; Phlhofer, G; Punch, M; Quirrenbach, A; Raab, S; Reichardt, I; Reimer, A; Reimer, O; Renaud, M; Reyes, R de los; Rieger, F; Rob, L; Romoli, C; Rosier-Lees, S; Rowell, G; Rudak, B; Rulten, C B; Sahakian, V; Salek, D; Sanchez, D A; Santangelo, A; Schlickeiser, R; Schssler, F; Schulz, A; Schwanke, U; Schwarzburg, S; Schwemmer, S; Sol, H; Spanier, F; Spengler, G; Spies, F; Stawarz, ?; Steenkamp, R; Stegmann, C; Stinzing, F; Stycz, K; Sushch, I; Tavernet, J -P; Tavernier, T; Taylor, A M; Terrier, R; Tluczykont, M; Trichard, C; Valerius, K; van Eldik, C; van Soelen, B; Vasileiadis, G; Veh, J; Venter, C; Viana, A; Vincent, P; Vink, J; Vlk, H J; Volpe, F; Vorster, M; Vuillaume, T; Wagner, P; Wagner, R M; Ward, M; Weidinger, M; Weitzel, Q; White, R; Wierzcholska, A; Willmann, P; Wrnlein, A; Wouters, D; Yang, R; Zabalza, V; Zaborov, D; Zacharias, M; Zdziarski, A A; Zech, A; Zechlin, H -S

2015-01-01T23:59:59.000Z

29

HD 259440: THE PROPOSED OPTICAL COUNTERPART OF THE {gamma}-RAY BINARY HESS J0632+057  

SciTech Connect (OSTI)

HD 259440 is a B0pe star that was proposed as the optical counterpart to the {gamma}-ray source HESS J0632+057. Here, we present optical spectra of HD 259440 acquired to investigate the stellar parameters, the properties of the Be star disk, and evidence of binarity in this system. Emission from the H{alpha} line shows evidence of a spiral density wave in the nearly edge-on disk. We find a best-fit stellar effective temperature of 27,500-30,000 K and a log surface gravity of 3.75-4.0, although our fits are somewhat ambiguous due to scattered light from the circumstellar disk. We derive a mass of 13.2-19.0 M{sub sun} and a radius of 6.0-9.6 R{sub sun}. By fitting the spectral energy distribution, we find a distance between 1.1 and 1.7 kpc. We do not detect any significant radial velocity shifts in our data, ruling out orbital periods shorter than one month. If HD 259440 is a binary, it is likely a long-period (>100 d) system.

Aragona, Christina; McSwain, M. Virginia [Department of Physics, Lehigh University, 16 Memorial Drive East, Bethlehem, PA 18015 (United States); De Becker, Michael, E-mail: cha206@lehigh.ed, E-mail: mcswain@lehigh.ed, E-mail: debecker@astro.ulg.ac.b [Institut d'Astrophysique et Geophysique, Universite de Liege, B-4000 Liege (Belgium)

2010-11-20T23:59:59.000Z

30

Thomas E. Hess Page 1 5/19/14 Thomas Hess  

E-Print Network [OSTI]

software QA, testing, knowledge management, training, worldwide customer support and critical problem, when optimally complied, dramatically increased the speed of end user experience and program execution implementation changes. As a result of this development, the "GeoFrame" product was significantly increased

Yang, Zong-Liang

31

Hybrid energy systems (HESs) using small modular reactors (SMRs)  

SciTech Connect (OSTI)

Large-scale nuclear reactors are traditionally operated for a singular purpose: steady-state production of dispatchable baseload electricity that is distributed broadly on the electric grid. While this implementation is key to a sustainable, reliable energy grid, small modular reactors (SMRs) offer new opportunities for increased use of clean nuclear energy for both electric and thermal ap plications in more locations while still accommodating the desire to support renewable production sources.

S. Bragg-Sitton

2014-10-01T23:59:59.000Z

32

Hydrology and Earth System Sciences, 9, 481492, 2005 www.copernicus.org/EGU/hess/hess/9/481/  

E-Print Network [OSTI]

and civil engineering. Standard methods such as oven-drying are very time-consuming and destructive, neutron. The determination of moisture content with time-domain reflectometry (TDR) technology is based on measurements

Paris-Sud XI, Université de

33

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

E-Print Network [OSTI]

Trigger System: Require a 2-telescope conicidence Removes muons Lower threshold Enables stereoscopic 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

California at Santa Cruz, University of

34

HESS J1640465 an exceptionally luminous TeV -ray supernova remnant  

Science Journals Connector (OSTI)

......6-arcmin (2sigma) larger than in the...lines. 610-MHz radio contours...uncertainties in e.g. atmospheric conditions...the missing area due to excluded...the SNR have a large influence on...especially if the plasma temperature...10erg2-s1 at 610-MHz within the X-ray...expected to have a larger extent in radio......

HESS Collaboration; A. Abramowski; F. Aharonian; F. Ait Benkhali; A. G. Akhperjanian; E. Angner; G. Anton; S. Balenderan; A. Balzer; A. Barnacka; Y. Becherini; J. Becker Tjus; K. Bernlhr; E. Birsin; E. Bissaldi; J. Biteau; M. Bttcher; C. Boisson; J. Bolmont; P. Bordas; J. Brucker; F. Brun; P. Brun; T. Bulik; S. Carrigan; S. Casanova; M. Cerruti; P. M. Chadwick; R. Chalme-Calvet; R. C. G. Chaves; A. Cheesebrough; M. Chrtien; S. Colafrancesco; G. Cologna; J. Conrad; C. Couturier; Y. Cui; M. Dalton; M. K. Daniel; I. D. Davids; B. Degrange; C. Deil; P. deWilt; H. J. Dickinson; A. Djannati-Ata; W. Domainko; L. O'C. Drury; G. Dubus; K. Dutson; J. Dyks; M. Dyrda; T. Edwards; K. Egberts; P. Eger; P. Espigat; C. Farnier; S. Fegan; F. Feinstein; M. V. Fernandes; D. Fernandez; A. Fiasson; G. Fontaine; A. Frster; M. Fling; M. Gajdus; Y. A. Gallant; T. Garrigoux; G. Giavitto; B. Giebels; J. F. Glicenstein; M.-H. Grondin; M. Grudzi?ska; S. Hffner; J. Hahn; J. Harris; G. Heinzelmann; G. Henri; G. Hermann; O. Hervet; A. Hillert; J. A. Hinton; W. Hofmann; P. Hofverberg; M. Holler; D. Horns; A. Jacholkowska; C. Jahn; M. Jamrozy; M. Janiak; F. Jankowsky; I. Jung; M. A. Kastendieck; K. Katarzy?ski; U. Katz; S. Kaufmann; B. Khlifi; M. Kieffer; S. Klepser; D. Klochkov; W. Klu?niak; T. Kneiske; D. Kolitzus; Nu. Komin; K. Kosack; S. Krakau; F. Krayzel; P. P. Krger; H. Laffon; G. Lamanna; J. Lefaucheur; A. Lemire; M. Lemoine-Goumard; J.-P. Lenain; D. Lennarz; T. Lohse; A. Lopatin; C.-C. Lu; V. Marandon; A. Marcowith; R. Marx; G. Maurin; N. Maxted; M. Mayer; T. J. L. McComb; J. Mhault; P. J. Meintjes; U. Menzler; M. Meyer; R. Moderski; M. Mohamed; E. Moulin; T. Murach; C. L. Naumann; M. de Naurois; J. Niemiec; S. J. Nolan; L. Oakes; S. Ohm; E. de Oa Wilhelmi; B. Opitz; M. Ostrowski; I. Oya; M. Panter; R. D. Parsons; M. Paz Arribas; N. W. Pekeur; G. Pelletier; J. Perez; P.-O. Petrucci; B. Peyaud; S. Pita; H. Poon; G. Phlhofer; M. Punch; A. Quirrenbach; S. Raab; M. Raue; A. Reimer; O. Reimer; M. Renaud; R. de los Reyes; F. Rieger; L. Rob; C. Romoli; S. Rosier-Lees; G. Rowell; B. Rudak; C. B. Rulten; V. Sahakian; D. A. Sanchez; A. Santangelo; R. Schlickeiser; F. Schssler; A. Schulz; U. Schwanke; S. Schwarzburg; S. Schwemmer; H. Sol; G. Spengler; F. Spies; ?. Stawarz; R. Steenkamp; C. Stegmann; F. Stinzing; K. Stycz; I. Sushch; A. Szostek; J.-P. Tavernet; T. Tavernier; A. M. Taylor; R. Terrier; M. Tluczykont; C. Trichard; K. Valerius; C. van Eldik; B. van Soelen; G. Vasileiadis; C. Venter; A. Viana; P. Vincent; J. Vink; H. J. Vlk; F. Volpe; M. Vorster; T. Vuillaume; S. J. Wagner; P. Wagner; M. Ward; M. Weidinger; Q. Weitzel; R. White; A. Wierzcholska; P. Willmann; A. Wrnlein; D. Wouters; V. Zabalza; M. Zacharias; A. Zajczyk; A. A. Zdziarski; A. Zech; H.-S. Zechlin

2014-01-01T23:59:59.000Z

35

HESS, F. R., AND D. G. AUBREY. Use of radio-controlled miniature ...  

Science Journals Connector (OSTI)

Dec 28, 1983 ... of oxygen in ma- rine sediments measured .... Solar glare off the sea surface in most ... Nauset Inlet, Cape Cod, Massachusetts, as part of a field...

2000-02-19T23:59:59.000Z

36

PowerPoint Presentation  

Gasoline and Diesel Fuel Update (EIA)

/89 /89 4/00 Genealogy of Major U.S. Oil and Gas Producers 2004 2003 2000 5/99 2001 2002 Snyder PennzEnergy BP America a Santa Fe 12/98 BP ARCO Amoco BP America Seagull 8/02 Conoco Conoco Gulf Canada Resources Phillips b SOHIO BP America Devon Mitchell Energy 8/99 10/01 Devon 3/99 7/01 Footnote and source notes are at the bottom of these figures. 8/00 Devon Santa Fe Snyder Devon Devon Ocean Energy Ocean Energy 4/03 ConocoPhillips Anderson Exploration 1/02 Devon 2005 2006 Burlington Resources ConocoPhillips 3/06 8/01 Triton Energy 2000 2002 2003 2004 2001 8/01 Kerr-McGee HS Resources Kerr-McGee El Paso Coastal El Paso Amerada Hess Amerada Hess Exxon ExxonMobil Mobil 11/99 10/99 Anadarko Union Pacific Resources Anadarko Texaco Chevron c Chevron 10/01 El Paso Sonat 7/00 Williams Barrett Resources 8/01 Williams 1/01 8/01 Velvet Exploration

37

Introduction to Theoretical Meterology. Seymour L. Hess. Holt, New York, 1959. xiv + 362 pp. Illus. $8.50  

Science Journals Connector (OSTI)

...defined group of fresh-water algae on a world-wide...to the problems of atmospheric motion. These are...explanation of the gen-eral atmospheric circulation. This...is the treatment of condensation and precipitation prob-lems...techniques of detection, recovery, and identification...

H. E. Landsberg

1960-05-27T23:59:59.000Z

38

Organophosphates as Solvents for Electrolytes in Electrochemical Andrew Hess, Greg Barber, Chen Chen, Thomas E. Mallouk, and Harry R. Allcock*  

E-Print Network [OSTI]

that employ liquid electrolytes for solar power conversion and energy storage, respectively.1,2 Although these problems. DSSCs are also a promising alternative to silicon-based solar cells due to their low raw-sensitized solar cells (DSSCs) and secondary lithium batteries. Unoptimized DSSC electrolyte formulations for DSSCs

39

XES Nanoprobe for Hard X-Ray Region Research Team: Mark Bowden, Kyle Alvine, Nancy Hess, John Lemmon  

E-Print Network [OSTI]

nanometer spatial resolution and in situ capability will be unique and widely applicable to fundamental with CII Project 1.9 Spectroscopic tomography of ZEBRA cathode at SSRL Leverage DOE-BES investments

40

eHealth Research from the User's Perspective Bradford W. Hesse, PhD, Ben Shneiderman, PhD  

E-Print Network [OSTI]

people do?" How can eHealth take part in national goals for healthcare reform to empower relationships (IT) to issues of personal health and health care has had a long and surprisingly complex history of IT applied to health care reflect the lessons learned from computer science more generally. The field

Shneiderman, Ben

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41

#LabChat Recap: Solutions through Supercomputing | Department...  

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

Solutions through Supercomputing LabChat Recap: Solutions through Supercomputing September 20, 2012 - 1:38pm Addthis Michael Hess Michael Hess Former Digital Communications...

42

 

U.S. Energy Information Administration (EIA) Indexed Site

R. Sandri R. Sandri Aectra Refining & Marketing Age Refining Agvantage FS AIC Ltd Bermuda AIG Trading Air BP Aloha Petroleum Alon USA Amerada Hess American Refining Group Amerigas Propane Amoco Amoco Canada Marketing Anadarko Energy Services Antelope Refining AP Propane Apex Oil Arco Arco Oil & Gas Arctic Slope Regional Corp Ascent Aviation Group Ashland Oil Astra Oil Atlantic Ref. & Marketing Atlantic Richfield Atlantic Trading & Marketing Atofina Petro AvFuel Corp Bakersfield Refinery Basis Petroleum Bayway Refinery Bear Stearns Berkshire Energy Management Big West of California LLC Big West Oil Black Elk Refining Blue Dolphin Energy Co Blueknight Energy Partners Blue Ribbon Energy BP Amoco BP Canada Energy Marketing BP Marine BP North America Petroleum BP Oil BP Products North America

43

Salt dome discoveries mounting in Mississippi  

SciTech Connect (OSTI)

Exploratory drilling around piercement salt domes in Mississippi has met with a string of successes in recent months. Exploration of these salt features is reported to have been initiated through the review of non-proprietary, 2D seismic data and subsurface control. This preliminary data and work were then selectively upgraded by the acquisition of additional, generally higher quality, conventional 2D seismic lines. This current flurry of successful exploration and ensuing development drilling by Amerada Hess Corp. on the flanks of salt domes in Mississippi has resulted in a number of significant Hosston discoveries/producers at: Carson salt dome in Jefferson Davis County; Dry Creek salt dome in Covington County, Midway salt dome in lamar County, Monticello salt dome in Lawrence County, and Prentiss salt dome in Jefferson Davis County. The resulting production from these fields is gas and condensate, with wells being completed on 640 acre production units.

Ericksen, R.L. [Mississippi Office of Geology, Jackson, MS (United States)

1996-06-17T23:59:59.000Z

44

E-Print Network 3.0 - andis auhinna soome Sample Search Results  

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

1 A sgn(v) o... ) Coulumb+viscous e) Karnopp c) Coulumb+viscous+stiction f) Hess and Soom Armstrong, etc 12... Friction Friction velocity lag time Hess and Soom (1990): F(v; t) ...

45

This Week In Petroleum Summary Printer-Friendly Version  

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

6, 2013 Next Release: February 13, 2013 Announced Closure of Hess Corp.'s Port Reading Refinery Not Seen Having Major Impact on Gasoline Markets On January 28, Hess Corp. announced...

46

Helping people 2 Johnson Controls September 18, 2013  

E-Print Network [OSTI]

Johnson Controls 4 Ford Motor Co. 5 Intel Corp. 6 Hess Corp. 7 Air Products & Chemicals 8 Praxair Inc. 9

Subramanian, Venkat

47

vol. 172, no. 1 the american naturalist july 2008 Selection through Male Function Favors Smaller Floral  

E-Print Network [OSTI]

- ford 1984; Hessing 1988; de Jong et al. 1992; Snow et al. 1996; Rademaker and de Jong 1998; Eckert 2000

Rausher, Mark D.

48

98:537-541, 2007. First published Apr 18, 2007; doi:10.1152/jn.01229.2006J Neurophysiol Eliana M. Klier, Dora E. Angelaki and Bernhard J. M. Hess  

E-Print Network [OSTI]

of the nervous system. It is published 12 times a yearJournal of Neurophysiology onFebruary19,2009jn rotations about different axes--yaw, pitch, and roll. The order in which we rotate about these axes are accurate after intervening, whole-body rotational sequences. The sequences were reversed, either yaw

Crawford, Doug

49

President Obama Announces New Public-Private Manufacturing Innovation...  

Office of Environmental Management (EM)

Gridbridge, Hesse Mechantronics, II-VI, IQE, John Deere, Monolith Semiconductor, RF Micro Devices, Toshiba International, Transphorm, USCi, Vacon 7 Universities and Labs:...

50

Opportunities for Farmers in Biomass Feedstock Production  

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

Opportunities for Farmers in Biomass Feedstock Production Richard Hess Biomass 2014, Feedstocks Plenary July 29, 2014 Getting into the Biomass Business Crop Residue Removal; Farm...

51

CASL Plan of Record 2 (1/11-6/11)  

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

Proposed Test Stand Selection Criteria Jess Gehin, ORNL Steve Hess, EPRI Zeses Karoutas, Westinghouse Rose Montgomery, TVA Advanced Modeling Applications January 23, 2013...

52

CASL Test Stand Experience  

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

Industry Test Stand Experience Stephen Hess, EPRI Heather Feldman, EPRI Brenden Mervin, EPRI Martin Pytel, EPRI Rose Montgomery, TVA Bill Bird, TVA Fausto Franceschini,...

53

Enhanced High Temperature Performance of NOx Storage/Reduction...  

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

Neal Currier, Junhui Li, Alex Yezerets Cummins Inc. Hai-Ying Chen, Howard Hess Johnson Matthey ACE026 2 Project Overview Timeline Budget Partners Barriers * Start - March...

54

Mechanisms of Sulfur Poisoning of NOx Adsorber (LNT) Materials  

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

Stafford, John Stang (retired), Alex Yezerets Cummins Inc. Hai-Ying Chen, Howard Hess Johnson Matthey Project ID: ace24peden 2 Project Overview Timeline Budget Partners Barriers...

55

Enhanced High and Low Temperature Performance of NOx Reduction...  

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

Li, John Luo, Alex Yezerets Cummins Inc. Mario Castagnola, Hai-Ying Chen, Howard Hess Johnson Matthey ACE026 Vehicle Technologies Office 2 Project Overview Timeline Budget...

56

Enhanced High Temperature Performance of NOx Storage/Reduction...  

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

Neal Currier, Junhui Li, Alex Yezerets Cummins Inc. Hai-Ying Chen, Howard Hess Johnson Matthey Ace026 2 Project Overview Timeline Budget Partners Barriers * Start - July...

57

Terrestrial & Subsurface Ecosystems | EMSL  

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

cycle and ecosystem biogeochemistry and inform biogeochemistry components of Earth System Models. Theme Leads Instruments Science Highlights Publications Leads Nancy J. Hess...

58

Influence of Mg2+ on CaCO3 precipitation during subsurface reactive...  

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

under flow and mixing conditions similar to those in subsurface aquifers. Citation: Boyd V, H Yoon, C Zhang, M Oostrom, NJ Hess, BW Fouke, AJ Valocchi, and CJ...

59

Power Maps in Algebra and  

E-Print Network [OSTI]

Power Maps in Algebra and Topology Kathryn Hess Preface The case of commutative algebras The Hochschild complex of a twisting cochain Power maps on the Hochschild complex Topological relevance Power Maps in Algebra and Topology Kathryn Hess Institute of Geometry, Algebra and Topology Ecole

Thévenaz, Jacques

60

Collaboration Scripts 1 DRAFT! PLEASE DO NOT CIRCULATE  

E-Print Network [OSTI]

Collaboration Scripts 1 DRAFT! PLEASE DO NOT CIRCULATE Running Head: COLLABORATION SCRIPTS Collaboration Scripts ­ A Conceptual Analysis Ingo Kollar, Frank Fischer, and Friedrich W. Hesse Knowledge Media: i.kollar@iwm-kmrc.de Kollar, I., Fischer, F., & Hesse, F. W. (2006). Collaboration scripts

Paris-Sud XI, Université de

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


61

Discovery of two candidate pulsar wind nebulae in very-high-energy gamma rays  

E-Print Network [OSTI]

We present the discovery of two very-high-energy gamma-ray sources in an ongoing systematic search for emission above 100 GeV from pulsar wind nebulae in survey data from the H.E.S.S. telescope array. Imaging Atmospheric Cherenkov Telescopes are ideal tools for searching for extended emission from pulsar wind nebulae in the very-high-energy regime. H.E.S.S., with its large field of view of 5 degrees and high sensitivity, gives new prospects for the search for these objects. An ongoing systematic search for very-high-energy emission from energetic pulsars over the region of the Galactic plane between -60 degrees wind nebulae, HESS J1718-385 and HESS J1809-193. H.E.S.S. has proven to be a suitable instrument for pulsar wind nebula searches.

H. E. S. S. Collaboration; :; F. Aharonian

2007-05-11T23:59:59.000Z

62

CASL Plan of Record 2 (1/11-6/11)  

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

L2:AMA.P9.01 Update to Industry Test Stand Experience Using VERA Stephen M. Hess, EPRI Dennis Hussey, EPRI Brenden Mervin, EPRI Martin Pytel, EPRI Rose Montgomery, TVA Fausto...

63

Structural analysis of the perdido fold belt: timing, evolution, and structural style  

E-Print Network [OSTI]

the upper portion consist of fine grained and muddy siliciclastics which are typical of turbidite and other typical deep water deposits. 2-D, prestacked, depth-migrated seismic data (TGS Phase 45) was interpreted in conjunction with Hess Corporation...

Waller, Troy Dale, II

2007-09-17T23:59:59.000Z

64

Meetings and Societies  

Science Journals Connector (OSTI)

...wetting measurements on petroleum reservoir rocks"; Norman Hackerman and A. C...J. A. Patter-son, "Resin porosity-exchange rates." 6 Aug. L...Hess, Box 114, Winthrop College, Rock Hill, S.C.) 14-16. Telemetering...

1957-03-01T23:59:59.000Z

65

Independent Scientific Advisory Board Review of Salmon and Steelhead  

E-Print Network [OSTI]

Hoc Member Richard N. Williams -ISRP #12;Acknowledgements The ISAB thanks all of the scientists Hallerman, Pete Hassemer, Jay Hesse, Ray Hilborn, Mike Kern, Paul Kline, Jim Lannan, Si Levin, Jeff Lutch

66

CCSM Atmosphere Model Working Group Report, 22-24 March 2006  

E-Print Network [OSTI]

, Aiguo Donner, Leo Eaton, Brian Gent, Peter Gettelman, Andrew Ghan, Steven J Hack, James Hannay, Cecile, Colette L. Hess, Peter Heymsfeld, Andrew Liu, Hongyu Neu, Jessica Rodriguez, Jose M. Vit

67

The Future of Sustainability Reporting as a Regulatory Mechanism  

Science Journals Connector (OSTI)

From this brief description, it is easy to see how transparency through non-financial reporting can be classified as a form of New Governance regulation. In prior work (Hess, 2008), I have described three basic pillars

David Hess

2014-01-01T23:59:59.000Z

68

CFSES Blue Team Presentations  

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

take you to the slides used in the presentation. Constraints on the Magnitude and Rate of CO2 Dissolution at Bravo Dome Natural Gas Field Marc Hesse (May, 2014) Nanoscale...

69

Interfacial ionic liquids: connecting static and dynamic...  

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

L, Lee S S and Fenter P 2012 Real-time observations of interfacial lithiation in a metal silicide thin film J. Phys. Chem. C 116 22341-5 43 Lindahl E, Hess B and van der...

70

Opportunities for Farmers in Biomass Feedstock Production  

Broader source: Energy.gov [DOE]

Plenary IV: Advances in Bioenergy FeedstocksFrom Field to Fuel Opportunities for Farmers in Biomass Feedstock Production J. Richard Hess, Idaho National Lab, Director of Energy Systems & Technology Division

71

Ultracapacitor/Battery Hybrid Energy Storage Systems for Electric Vehicles.  

E-Print Network [OSTI]

??This thesis deals with the design of Hybrid Energy Storage System (HESS) for Light Electric Vehicles (LEV) and EVs. More specifically, a tri-mode high-efficiency non-isolated (more)

Moshirvaziri, Mazhar

2012-01-01T23:59:59.000Z

72

Passive Catalytic Approach to Low Temperature NOx Emission Abatement  

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

Aleksey Yezerets, Michael Ruth Cummins Inc. Hai-Ying Chen, Howard Hess, Mojghan Naseri Johnson Matthey 10252011 US DoE DEER Conference 2011 * 40% Fuel Economy improvement over...

73

Mechanisms of Sulfur Poisoning of NOx Adsorber (LNT) Materials  

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

Stafford, Junhui Li, John Stang, Alex Yezerets Cummins Inc. Hai-Ying Chen, Howard Hess Johnson Matthey 2 The project is a CRADA between PNNL and Cummins Inc. It involves a...

74

1  

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

daily basis. Over the last year or so, we have seen the topic of crude-by-rail transport rise to a level of national importance. Hess commends the continued and persistent efforts...

75

Table of Contents Invited Talks  

E-Print Network [OSTI]

Shih, Keith Sklower, Lakshminarayanan Subramanian, Takashi Suzuki, Shelley Zhuang, Anthony D. Joseph . . . . . . . . . . 16 Christopher K. Hess, Manuel Rom´an, Roy H. Campbell Systems Support for Ubiquitous Computing . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Christopher Lueg Applications The Fastap Keypad and Pervasive Computing

76

Consortium for Advanced Simulation of Light Water Reactors (CASL...  

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

650-855-8529 Rose Montgomery Deputy Lead rmontgomery@tva.gov 865-576-1381 Steve Hess Test Stands shess@epri.com 484-753-3677 Product Integrators and Cross-Cutting Technologies...

77

Aerogel Impregnated Polyurethane Piping and Duct Insulation  

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

Aerogel Impregnated Polyurethane Aerogel Impregnated Polyurethane Piping and Duct Insulation David M. Hess InnoSense LLC david.hess@innosense.us, 310-530-2011 April 4, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Develop an efficient insulation system that will adhere to housing duct work and pipe structures while conforming to complex geometries. New insulations must increase the R-value of existing materials and be easy to apply or retrofit to existing structures.

78

Flight characteristics of pen-reared and wild prairie-chickens and an evaluation of a greenhouse to rear prairie-chickens  

E-Print Network [OSTI]

FLIGHT CHARACTERISTICS OF PEN-REARED AND WILD PRAIRIE- CHICKENS AND AN EVALUATION OF A GREENHOUSE TO REAR PRAIRIE-CHICKENS A Thesis by MARC FREDERICK HESS Submitted to the Office of Graduate Studies of Texas A... AND AN EVALUATION OF A GREENHOUSE TO REAR PRAIRIE-CHICKENS A Thesis by MARC FREDERICK HESS Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by...

Hess, Marc Frederick

2004-09-30T23:59:59.000Z

79

Gamma-ray and radio tests of the e{sup {+-}} excess from DM annihilations  

SciTech Connect (OSTI)

PAMELA and ATIC recently reported an excess in e{sup {+-}} cosmic rays. We show that if it is due to Dark Matter annihilations, the associated gamma-ray flux and the synchrotron emission produced by e{sup {+-}} in the galactic magnetic field violate HESS and radio observations of the galactic center and HESS observations of dwarf spheroidals, unless the DM density profile is significantly less steep than the benchmark NFW and Einasto profiles.

Bertone, Gianfranco; Taoso, Marco [Institut d'Astrophysique de Paris, UMR7095-CNRS and Universite Pierre et Marie Curie, 98bis Boulevard Arago, 75014 Paris (France)] [Institut d'Astrophysique de Paris, UMR7095-CNRS and Universite Pierre et Marie Curie, 98bis Boulevard Arago, 75014 Paris (France); Cirelli, Marco [Institut de Physique Theorique, URA2306-CNRS and DSM, CEA/Saclay, 91191 Gif-sur-Yvette (France)] [Institut de Physique Theorique, URA2306-CNRS and DSM, CEA/Saclay, 91191 Gif-sur-Yvette (France); Strumia, Alessandro, E-mail: bertone@iap.fr, E-mail: marco.cirelli@cea.fr, E-mail: astrumia@mail.df.unipi.it, E-mail: marco.taoso@pd.infn.it [Dipartimento di Fisica, Universita di Pisa, Largo Buonarroti 2, Pisa (Italy)] [Dipartimento di Fisica, Universita di Pisa, Largo Buonarroti 2, Pisa (Italy)

2009-03-15T23:59:59.000Z

80

Diffuse TeV Emission at the Galactic Centre  

E-Print Network [OSTI]

The High-Energy Stereoscopic System (HESS) has detected intense diffuse TeV emission correlated with the distribution of molecular gas along the galactic ridge at the centre of our Galaxy. Earlier HESS observations of this region had already revealed the presence of several point sources at these energies, one of them (HESS J1745-290) coincident with the supermassive black hole Sagittarius A*. It is still not entirely clear what the origin of the TeV emission is, nor even whether it is due to hadronic or leptonic interactions. It is reasonable to suppose, however, that at least for the diffuse emission, the tight correlation of the intensity distribution with the molecular gas indicates a pionic-decay process involving relativistic protons. In this paper, we explore the possible source(s) of energetic hadrons at the galactic centre, and their propagation through a turbulent medium. We conclude that though Sagittarius A* itself may be the source of cosmic rays producing the emission in HESS J1745-290, it cannot be responsible for the diffuse emission farther out. A distribution of point sources, such as pulsar wind nebulae dispersed along the galactic plane, similarly do not produce a TeV emission profile consistent with the HESS map. We conclude that only a relativistic proton distribution accelerated throughout the inter-cloud medium can account for the TeV emission profile measured with HESS.

Elizabeth Wommer; Fulvio Melia; Marco Fatuzzo

2008-04-18T23:59:59.000Z

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81

Argonne Chemical Sciences & Engineering - Nuclear & Environmental Processes  

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

HESS HESS * Members * Publications * Overview * Recent Research Results Nuclear & Environmental Processes Home Heavy Element and Separations Science (HESS) Three dimensional reconstruction of the structure of a plutonium-containing protein in solution from small angle X-ray scattering (SAXS) data. Three-dimensional reconstruction of the structure of a plutonium-containing protein in solution from small-angle X-ray scattering (SAXS) data. Except for ultra-trace amounts of neptunium (Np) and plutonium (Pu) naturally generated by neutrons in uranium ores, all of the elements heavier than uranium (with atomic number 92) found in the geosphere are man made. The study of their chemistries began with the synthetic production of Np by Edwin McMillan and Philip H. Abelson in 1940. Since that time, much

82

Energy Blog | Department of Energy  

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

15, 2011 15, 2011 This Month's Feature on .EDUconnections: University of Wisconsin-Madison UW-Madison ranks as one of the most prolific research universities in the world April 15, 2011 Taking Smart Grid Technology Out of the Lab and Into the Marketplace Find out how this partnership will take early stage technologies out of the lab and test them to see if they can revolutionize the way we use and store electricity. April 14, 2011 Nancy Hess | Photo Courtesy of Pacific Northwest National Lab (PNNL) 10 Questions for a Spectroscopy Expert: Nancy Hess Dr. Hess is using her expertise in molecular level spectroscopy to protect water supplies and advance carbon capture and sequestration technologies. And find out how the Apollo missions, Jacques Cousteau and the Krebs cycle

83

Fiscal year 1985 Department of Energy authorization. Volume I. Hearing before the Subcommittee on Energy Research and Production and the Subcommittee on Energy Development and Applications, US House of Representatives, Ninety-Eighth Congress, Second Session, March 13, 1984  

SciTech Connect (OSTI)

Volume I of the hearing record covers the March 13, 1984 testimony of Martha Hesse, Assistant DOE Secretary for Management and Administration, on the fiscal year 1985 budget request for DOE administration. Ms. Hesse discussed specific budget justifications, including funding for the Technical Information Services, in-house energy management, and policy initiatives, such as the realignment of some functions within the department, the introduction of an integrated accouting and personnel and payroll systems, and other efforts to reduce overhead costs. She reported a three percent drop in staffing level. Following a prepared statement by Ms. Hesse and introductory remarks by committee members, the bulk of the hearing record contains responses to committee questions.

Not Available

1984-01-01T23:59:59.000Z

84

Decathletes Demonstrate Affordable Solar Housing | Department of Energy  

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

Decathletes Demonstrate Affordable Solar Housing Decathletes Demonstrate Affordable Solar Housing Decathletes Demonstrate Affordable Solar Housing September 27, 2011 - 3:54pm Addthis Parsons The New School for Design and Stevens Institute of Technology tied with Purdue University's INhome to win the Affordability Contest at the 2011 Solar Decathlon by building Empowerhouse for less than $230,000. | Courtesy of Empowerhouse. Parsons The New School for Design and Stevens Institute of Technology tied with Purdue University's INhome to win the Affordability Contest at the 2011 Solar Decathlon by building Empowerhouse for less than $230,000. | Courtesy of Empowerhouse. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs

85

The Impact of Traffic Images on Mode Choice in Stated-Preference Surveys  

E-Print Network [OSTI]

that they are marginal. However, they noted that there is little evidence of response fatigue over as many as 32 choice experiments 16 (Stopher and Hensher 2000, Hensher 2006, Hess et al. 2012). Despite this conclusion, this research is designed to be short...

Harline, Carl Eric

2013-09-12T23:59:59.000Z

86

Age at ocean entry of Snake River Basin fall Chinook salmon and its significance to adult returns prior to summer spill at Lower Granite, Little  

E-Print Network [OSTI]

in the Snake River basin. Transactions of the American Fisheries Society 134:291-304. Marsh D. M., Harmon, J. R, Douglas M. Marsh, William D. Muir, Kenneth F. Tiffan, Jay Hesse Prior to 2002, it was largely assumed entrants is an important area for future research. REFERENCES Connor, W. P., H. L. Burge, R. Waitt, and T

87

Physical mapping and characterization of the equine lymphocyte antigen (ELA) complex  

E-Print Network [OSTI]

. 1990) in addition to the LMP2, LMP7, TAP1, TAP2, DOB, and DOA which are present in the class II regions of all mammalian MHCs studied to date (Hess et al. 1999). Comparative sequence analysis of DYA and DIB exons has not identified any orthologous...

Seabury, Ashley Gustafson

2005-08-29T23:59:59.000Z

88

Simulating cosmic rays in clusters of galaxies II. A unified scheme for radio haloes and relics with predictions of the -ray emission  

Science Journals Connector (OSTI)

......low-frequency radio arrays (GMRT,1 LOFAR,2 MWA,3 LWA4), the future hard X-ray satellite missions NuSTAR 5 and Simbol-X, and gamma-ray instruments (the GLAST 6 satellite and imaging atmospheric cerenkov telescopes H.E.S.S.,7 MAGIC......

Christoph Pfrommer; Torsten A. Enlin; Volker Springel

2008-04-11T23:59:59.000Z

89

JOURNAL DE PHYSIQUE Colloque C3, suppldment au no 8, Tome 38, Aoiit 1977,page C3-165 RF HEATING EXPERIMENTS IN THE WEGA TOKAMAK  

E-Print Network [OSTI]

EXPERIMENTS IN THE WEGA TOKAMAK P. BLANC, W. HESS, G. ICHTCHENKO, P. LALLIA, T. K. NGUYEN, G. TONON plasma du Tokamak WEGA a l'aide de boucles plackes a I'intk- rieur de la chambre a vide. Des profils de. Abstract. -To the WEGA Tokamak plasma, up to 90 kW RF power near the lower hybrid fre- quency (500 MHz

Paris-Sud XI, Université de

90

Board of Trustees E. William Barnett, Chair  

E-Print Network [OSTI]

3 Board of Trustees TRUSTEES E. William Barnett, Chair J. D. Bucky Allshouse D. Kent Anderson James A. Baker, III Teveia Rose Barnes Raymond Brochstein Albert Y. Chao James W. Crownover James A Hess Rogers William N. Sick TRUSTEES EMERITI Josephine E. Abercrombie J. Evans Attwell Harry J

Richards-Kortum, Rebecca

91

Aa r e aAa r e a 11Self-Guided Walking Tour (Revised 2007)  

E-Print Network [OSTI]

Cyclotron Rd., B-1,2 Davis Hall, B-3 Disabled Students' Program, D-4,5 Doe (Main) Library, C-4 Donner Lab, B of Anthropology, D-3 Heating Plant, D-6 Hellman Tennis Complex, D-6,7 Hertz Hall, D-3 Hesse Hall, B-4 Hildebrand

Alvarez-Cohen, Lisa

92

Poster Resources Poster Planning  

E-Print Network [OSTI]

Poster Resources Poster Planning � Discovery Day: Tips for Successful Posters by University of South Carolina Office of Undergraduate Research � Creating Effective Poster Presentations by George Hess, Kathryn Tosney, Leon Liegel http://www.ncsu.edu/project/posters/NewSite/index.html � How to Write

Almor, Amit

93

Effective Scientific Posters Quick Reference  

E-Print Network [OSTI]

Effective Scientific Posters Quick Reference George R. Hess An effective poster will help you. A poster is a visual communication tool. Posters serve as ... » a source of information » a conversation starter » a summary of your work » an advertisement of your work Resources for Poster Presenters George

Movileanu, Liviu

94

Title of dissertation: CONTROL, DYNAMICS, AND EPIDEMIC SPREADING IN COMPLEX SYSTEMS  

E-Print Network [OSTI]

To my wife Zsofi and to my parents ii #12;Acknowledgments There are many people to whom I am grateful scientific ideas are lost if not conveyed in a clear accessible manner. He is he sharpest minded critic and professionalism of Jane Hessing. Finally, I would like to thank my parents for their encouragement and support. iv

Anlage, Steven

95

Multi-agent systems support for Community-Based Learning  

Science Journals Connector (OSTI)

......1999 D'Souza D.F. , Wills A.C., Objects, Components, and Frameworks...McGuire, J., Pelavin, R., Shapiro, S., Beck, C., 1993. Specification of the KQML...1999 Franke A. , Hess S., Jung C., Kohlhase M., Sorge V., Agent-oriented......

Yugyung Lee; Quddus Chong

2003-01-01T23:59:59.000Z

96

References and Notes 1. E. Roedder, Ed., Fluid Inclusions, vol. 12 of Reviews in  

E-Print Network [OSTI]

., Tectonophysics 275, 143 (1997). 24. N. M. Shapiro, M. H. Ritzwoller, J. C. Mareschal, C. Jaupart, in Geological. Mineral. Petrol. 102, 102 (1989). 8. D. B. Dingwell, K. U. Hess, C. Romano, Earth Planet. Sci. Lett. 158. C. Kuo, R. J. Kirkpatrick, Am. J. Sci. 285, 51 (1985). 13. C. H. Donaldson, Lithos 8, 163 (1975). 14

Zhang, Guangyu

97

What to Do When Your Hessian Is Not Invertible  

E-Print Network [OSTI]

What to Do When Your Hessian Is Not Invertible Alternatives to Model Respecification in Nonlinear is not invertable? The standard textbook advice is to respecify the model, but this is another way of saying for its inventor, German mathematician Ludwig Hesse) must be positive definite and hence invertible

Gill, Jeff

98

Running head: STEREOTYPE THREAT IN OLDER ADULTS 1 Stereotype threat can enhance, as well as impair, older adults' memory  

E-Print Network [OSTI]

Running head: STEREOTYPE THREAT IN OLDER ADULTS 1 Stereotype threat can enhance, as well as impair, and Rico Velasco for research assistance and to Dr. Tom Hess for providing us with the stereotype threat for publication. #12;STEREOTYPE THREAT IN OLDER ADULTS 2 Abstract (150) Negative stereotypes about aging can

Mather, Mara

99

Electronic Markets The International Journal on  

E-Print Network [OSTI]

: a path analysis Mimi Zhang, Bernard J. Jansen & Abdur Chowdhury #12;1 23 Your article is protected Zhang & Bernard J. Jansen & Abdur Chowdhury Received: 10 October 2010 /Accepted: 12 July 2011 /Published environments, de Chernatony (2000) Responsible editor: Thomas Hess M. Zhang (*) :B. J. Jansen College

Jansen, James

100

Free loop spaces in topology and  

E-Print Network [OSTI]

Free loop spaces in topology and physics Kathryn Hess What is the space of free loops? Enumeration of geodesics Hochschild and cyclic homology Homological conformal field theories Free loop spaces in topology Meeting of the Edinburgh Mathematical Society Glasgow, 14 November 2008 #12;Free loop spaces in topology

Thévenaz, Jacques

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


101

U.S. Department of the Interior U.S. Geological Survey  

E-Print Network [OSTI]

and Production 6.9 billion barrels of oil consumption by U.S. annually (EIA) Production to date1 Williston of oil ~22% of Williston Basin production has been from the Bakken-Three Forks 1: Production numbers · Denbury Resources · Enerplus Corp. · Fidelity Exploration & Production · Hess Corp. · Kodiak Oil & Gas

Torgersen, Christian

102

Sintered Bentonite Ceramics for the Immobilization of Cesium- and Strontium-Bearing Radioactive Waste  

E-Print Network [OSTI]

minimizing the surface area of these waste forms to counter this issue. Hess found ?? damage to stoichiometric 137Cs doped pollucite structure slightly increased the volume from 0.5 - 1 % [8]. A study performed by Argonne and Pacific Northwest National Labs...

Ortega, Luis H.

2010-07-14T23:59:59.000Z

103

Ozlem Celik, UCLA UC Santa Cruz, 9/4/2007 Status of VERITAS  

E-Print Network [OSTI]

VERITAS, CANGAROO, HESS, MAGIC Ground-based Highest energies GLAST Satellite All-sky survey Broad energy and Pulsar Wind Nebula Understand the role of SNRs in CR acceleration Study particle acceleration IImaging TTelescope AArray SSystem T2 T1 T4 T3 SPECIFICATIONS: Energy threshold ~ 100GeV Angular resolution

California at Santa Cruz, University of

104

THE ECONOMIC SITUATION IN THE ECE REGION  

E-Print Network [OSTI]

THE ECONOMIC SITUATION IN THE ECE REGION DIETER HESSE ECONOMIC ANALYSIS DIVISION UNECE #12;Major trends in the global economy so far in 2003 Global economic activity picked up ­ but uneven regional growth forces United States remains main engine of global economic growth Japan and Asian emerging

105

SEMINAR SERIES Towards a climate sensitive  

E-Print Network [OSTI]

in an Earth System Model presented by Peter Hess Associate Professor, Biological and Environmental Engineering are crudely represented in Earth System Models and do not respond changes in climate. Here I present a first interactive parameterization of ammonia emissions in an Earth System Model based on model physics and discuss

106

Overcoming Antiangiogenic Resistance  

Science Journals Connector (OSTI)

...alMC044h, a phase II trial of sorafenib in patients (pts) with metastatic neuroendocrine tumors (NET): a Phase II Consortium (P2C) study.J Clin Oncol 2007;25(18S):abstr 4504. 9. Phan AT , Yao JC, Fogelman DR, Hess KR, Ng CS, Bullock SA, et...

James C. Yao and Alexandria Phan

2011-08-15T23:59:59.000Z

107

New Strategies for Advanced Neuroendocrine Tumors in the Era of Targeted Therapy  

Science Journals Connector (OSTI)

...alMC044h, a phase II trial of sorafenib in patients (pts) with metastatic neuroendocrine tumors (NET): A Phase II Consortium (P2C) study.J Clin Oncol 2007;25:4504. 32. Phan AT , Yao JC, Fogelman DR, Hess KR, Ng CS, Bullock SA, et alA prospective...

Mei Dong; Alexandria T. Phan; James C. Yao

2012-04-01T23:59:59.000Z

108

The impact of incomplete knowledge on evaluation: an experimental benchmark for protein function prediction  

Science Journals Connector (OSTI)

......processes (such as DNA damage repair) rather than molecular functions...e.g. a set of known DNA repair genes for learning about the...validation, we employed a pipeline detailed in the study by Hess...biological processes (e.g. DNA repair) to generate more complete......

Curtis Huttenhower; Matthew A. Hibbs; Chad L. Myers; Amy A. Caudy; David C. Hess; Olga G. Troyanskaya

2009-09-15T23:59:59.000Z

109

Weston Buckley Anderson Department of Earth and Environmental Science  

E-Print Network [OSTI]

-2893-2012. Anderson, W.B., Guikema S., Zaitchik, B. and Pan, W. (2014): Methods for estimating population density University Research: Characterized the 2010-11 East Africa drought using remote sensing products Advisor: Dr drought monitor for East Africa, Hydrol. Earth Syst. Sci., 16, 2893-2913, doi:10.5194/hess-16

110

Single-molecule imaging in live bacteria cells  

Science Journals Connector (OSTI)

...0.10 mum2 s1. In the absence of the laser trap, no long-range motion was observed...Notably, Elmore et al. [30] used a GFP fusion to the Lac repressor to bind the DNA near...MW, Lippincott-Schwartz, J, Hess, HF. 2006 Imaging intracellular fluorescent...

2013-01-01T23:59:59.000Z

111

Experimental approaches for addressing fundamental biological questions in living, functioning cells with single molecule precision  

Science Journals Connector (OSTI)

...relatively short wavelength long uv laser excitation to activate and...resolution non-fluorescence laser interferometry method [20...intermediates of virus-endosome fusion. PLoS Pathog. 7, e1001260...GH Patterson, H Shroff, HF Hess, E Betzig, and J. Lippincott-Schwartz...

2012-01-01T23:59:59.000Z

112

COLLABORATION SCRIPTS A CONCEPTUAL ANALYSIS This is a post-print of an article submitted for consideration in the Educational Psychology  

E-Print Network [OSTI]

COLLABORATION SCRIPTS ­ A CONCEPTUAL ANALYSIS This is a post-print of an article submitted-006-9007-2 } Please refer this manuscript as: Kollar, I., Fischer, F., & Hesse, F. W. (2006). Collaboration scripts manuscript, published in "Educational Psychology Review 18(2) (2006) 159-185" #12;Collaboration Scripts 2

Paris-Sud XI, Université de

113

Tracking Santa With Our Eyes in the Sky | Department of Energy  

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

Tracking Santa With Our Eyes in the Sky Tracking Santa With Our Eyes in the Sky Tracking Santa With Our Eyes in the Sky December 24, 2013 - 10:00am Addthis The Energy Department's Los Alamos National Lab is tracking Santa Claus as he circles the globe the night before Christmas. The Energy Department's Los Alamos National Lab is tracking Santa Claus as he circles the globe the night before Christmas. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs Every year since 1998, the Energy Department's Los Alamos National Lab has been using state-of-the-art technology to track Santa Claus as he circles the globe the night before Christmas. You'll be able to monitor St. Nick's journey here starting at 6 a.m. ET on Christmas Eve. Since Santa doesn't file his flight path with the Federal Aviation

114

Lab Breakthrough: ADM Leads to Petroleum-Free Glycol Production Facility |  

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

Lab Breakthrough: ADM Leads to Petroleum-Free Glycol Production Lab Breakthrough: ADM Leads to Petroleum-Free Glycol Production Facility Lab Breakthrough: ADM Leads to Petroleum-Free Glycol Production Facility May 22, 2012 - 9:38am Addthis Pacific Northwest National Laboratory discovered a viable way to deliver propylene glycol from feedstock, including glycerin byproducts. ADM licensed that technology and in 2010 completed construction and commissioning of its full-scale production facility for the sole purpose of commercializing the PGRS process. View the entire Lab Breakthrough playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What does this project do? Created a renewable alternative to petroleum-based propylene glycol. Primarily, it found a way to do the chemistry efficiently and

115

First-Hand Recollections of the First Self-Sustaining Chain Reaction |  

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

First-Hand Recollections of the First Self-Sustaining Chain First-Hand Recollections of the First Self-Sustaining Chain Reaction First-Hand Recollections of the First Self-Sustaining Chain Reaction August 3, 2012 - 4:53pm Addthis On December 2, 1942, 49 scientists, led by Enrico Fermi, made history when Chicago Pile 1 (CP-1) went critical and produced the world's first self-sustaining, controlled nuclear chain reaction. Seventy years later, two of the last surviving CP-1 pioneers, Harold Agnew and Warren Nyer, recall that historic day. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How were the natives? A small graphite block from the pile is on display at the Museum of Science and Industry in Chicago; another can be seen at the Bradbury Science Museum in Los Alamos, NM.

116

After 15 Years, A New Top Earning Patent At Ames Lab | Department of Energy  

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

After 15 Years, A New Top Earning Patent At Ames Lab After 15 Years, A New Top Earning Patent At Ames Lab After 15 Years, A New Top Earning Patent At Ames Lab January 20, 2012 - 11:32am Addthis Ames Laboratory senior metallurgist Iver Anderson explains the importance of lead-free solder in taking hazardous lead out of the environment by eliminating it from discarded computers and electronics that wind up in landfills. Anderson led a team that developed a tin-silver-copper replacement for traditional lead solder that has been adopted by more than 50 companies worldwide and has generated more than $39 million in licensing income. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are the key facts? As of the end of June 2011, lead-free solder generated $38.9 million

117

How to Turn a Jaguar into a Titan | Department of Energy  

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

How to Turn a Jaguar into a Titan How to Turn a Jaguar into a Titan How to Turn a Jaguar into a Titan November 27, 2012 - 3:02pm Addthis Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What powers Titan? 299,008 processor cores 710 terabytes of memory 8.2 MW power usage How to Turn a Jaguar into a Titan It takes more than the side mural to turn the fastest supercomputer dedicated to Open Science into the fastest computer in the world. The same room and cabinets that held supercomputer Jaguar, now holds Titan. Storified by Energy Department · Tue, Nov 27 2012 12:07:29 How did Oak Ridge National Labs turn this world-class supercomputer into an even faster, more efficient supercomputer? Wikimedia It took a little more than changing the sticker. Wikimedia

118

Recovery Act Energy Jobs Bring New Era of Opportunity | Department of  

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

Energy Jobs Bring New Era of Opportunity Energy Jobs Bring New Era of Opportunity Recovery Act Energy Jobs Bring New Era of Opportunity September 22, 2011 - 12:47pm Addthis Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs Hundreds of thousands of people found work in the past few years thanks to Recovery Act and Energy Department programs designed to stimulate the economy while creating new power sources, conserving resources and aligning the nation to once again lead the global energy economy. The Energy Department has several tools at its disposal to put Americans to work while pursuing long-term national energy goals like spurring the development of electric vehicles, updating the national power grid, and making commercial buildings more efficient. Tax credits directly fund,

119

Registration Now Open for 2013 Science Bowl Teams | Department of Energy  

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

36am 36am Addthis The National Science Bowl finals take place each year in the National Building Museum. The top regional teams come to Washington, D.C., in the spring as they as they advance to National Finals. Registration is now open at the NSB website. | Photo by Dennis Brack, Energy Department Office of Science The National Science Bowl finals take place each year in the National Building Museum. The top regional teams come to Washington, D.C., in the spring as they as they advance to National Finals. Registration is now open at the NSB website. | Photo by Dennis Brack, Energy Department Office of Science Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs

120

Breakthrough: MFiX: Building Industry-Scale Machines in a Virtual World |  

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

Breakthrough: MFiX: Building Industry-Scale Machines in a Virtual Breakthrough: MFiX: Building Industry-Scale Machines in a Virtual World Breakthrough: MFiX: Building Industry-Scale Machines in a Virtual World July 11, 2012 - 1:34pm Addthis Mfix is open-source, virtual modeling software that makes coal gasification processes more efficient than was ever possible through lab tests. Modeling reduces the cost and time of testing and building actual systems and ultimately results in lower costs, improved power plant efficiency, and new energy systems that meet or even exceed current or proposed environmental regulations. View the entire Lab Breakthrough playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What is the future of MFiX? Ultimately, we see MFiX being used to solve industrial-scale

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


121

DOE Announces Award of a Contract to Repurchase Heating Oil for the  

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

DOE Announces Award of a Contract to Repurchase Heating Oil for the DOE Announces Award of a Contract to Repurchase Heating Oil for the Northeast Home Heating Oil Reserve DOE Announces Award of a Contract to Repurchase Heating Oil for the Northeast Home Heating Oil Reserve July 23, 2008 - 2:15pm Addthis WASHINGTON, DC - The U.S. Department of Energy today announced the award of a contract to Hess Corporation for the delivery of approximately 808,625 gallons (approximately 19,250 barrels) of home heating oil for the Northeast Home Heating Oil Reserve (NEHHOR). The purchased oil is expected to be delivered to the Hess First Reserve terminal at Perth Amboy, NJ in New York Harbor later this week. The award resulted from a solicitation issued on June 23, 2008, to repurchase heating oil using $3 million in funds appropriated after the

122

Wrap Up: 2013 ARPA-E Energy Innovation Summit | Department of Energy  

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

Wrap Up: 2013 ARPA-E Energy Innovation Summit Wrap Up: 2013 ARPA-E Energy Innovation Summit Wrap Up: 2013 ARPA-E Energy Innovation Summit March 1, 2013 - 4:05pm Addthis Elon Musk, CEO of Tesla Motors, and Secretary Chu during a fireside chat at the 2013 ARPA-E Energy Innovation Summit | Photo by Sarah Gerrity, Energy Department. Elon Musk, CEO of Tesla Motors, and Secretary Chu during a fireside chat at the 2013 ARPA-E Energy Innovation Summit | Photo by Sarah Gerrity, Energy Department. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What does this project do? Learn more about ARPA-E on their topic page. View the photo gallery at energy.gov/photos. The 2013 ARPA-E Energy Innovation Summit concluded Wednesday with a final

123

Lab Breakthrough: Record-Setting Cavities | Department of Energy  

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

Record-Setting Cavities Record-Setting Cavities Lab Breakthrough: Record-Setting Cavities April 24, 2012 - 2:34pm Addthis At Jefferson Lab, researchers have fabricated a niobium cavity for particle accelerators that has set a world record for energy efficiency. Gianluigi "Gigi" Ciovati, a superconducting radiofrequency scientist, discusses how scientists at the Jefferson Lab developed the technology, and how it will be used to impact the energy industry. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What does this project do? With more powerful accelerators, researchers can someday build new power plants that produce little or no nuclear waste. At Jefferson Lab, researchers have fabricated a niobium cavity for particle accelerators that has set a world record for energy efficiency. Gianluigi

124

Recovery Act Energy Jobs Bring New Era of Opportunity | Department of  

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

Recovery Act Energy Jobs Bring New Era of Opportunity Recovery Act Energy Jobs Bring New Era of Opportunity Recovery Act Energy Jobs Bring New Era of Opportunity September 22, 2011 - 12:47pm Addthis Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs Hundreds of thousands of people found work in the past few years thanks to Recovery Act and Energy Department programs designed to stimulate the economy while creating new power sources, conserving resources and aligning the nation to once again lead the global energy economy. The Energy Department has several tools at its disposal to put Americans to work while pursuing long-term national energy goals like spurring the development of electric vehicles, updating the national power grid, and making commercial buildings more efficient. Tax credits directly fund,

125

Levitation as a Tool in Argonne Lab | Department of Energy  

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

Levitation as a Tool in Argonne Lab Levitation as a Tool in Argonne Lab Levitation as a Tool in Argonne Lab March 19, 2013 - 4:54pm Addthis Scientists at Argonne National Laboratory have discovered a way to use sound waves to levitate individual droplets of solutions containing different pharmaceuticals. Watch all Argonne videos on their video page. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are the key facts? Droplets are suspended in air between two sets of speakers, which generate sound waves at frequencies slightly above the audible range -- about 22 kilohertz. Back in September, Argonne National Lab posted the YouTube video "Acoustic Levitation" featuring physicist Chris Benmore suspending droplets of liquid between two speakers. It almost immediately went viral garnering

126

Are You Smarter Than a Middle Schooler? | Department of Energy  

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

Are You Smarter Than a Middle Schooler? Are You Smarter Than a Middle Schooler? Are You Smarter Than a Middle Schooler? April 25, 2012 - 10:12am Addthis Hopkins Junior High School Team members, from Fremont, Calif., Raghu Dhara and Krishna Bharathal compete at the 2010 National Science Bowl for middle school students in Washington D.C. | Photo courtesy of John Troha, National Science Bowl. Hopkins Junior High School Team members, from Fremont, Calif., Raghu Dhara and Krishna Bharathal compete at the 2010 National Science Bowl for middle school students in Washington D.C. | Photo courtesy of John Troha, National Science Bowl. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How can I participate? We will be livetweeting the round-robin tournaments from @energy on

127

Commercial Ethanol Turns Dross to Dollars for Rural Iowans | Department of  

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

Commercial Ethanol Turns Dross to Dollars for Rural Iowans Commercial Ethanol Turns Dross to Dollars for Rural Iowans Commercial Ethanol Turns Dross to Dollars for Rural Iowans September 28, 2011 - 3:23pm Addthis American farmers harvest 80 million acres of corn each autumn. The corn stover usually left on a hewn field can be processed into a renewable transportation fuel called bioethanol. | Image courtesy of POET American farmers harvest 80 million acres of corn each autumn. The corn stover usually left on a hewn field can be processed into a renewable transportation fuel called bioethanol. | Image courtesy of POET Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are the key facts? Farmers, truck operators, farm equipment distributors and agricultural laborers all benefit from the emerging bioethanol market in

128

NNSA Highly Enriched Uranium Removal Featured on The Rachel Maddow Show |  

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

Highly Enriched Uranium Removal Featured on The Rachel Maddow Highly Enriched Uranium Removal Featured on The Rachel Maddow Show NNSA Highly Enriched Uranium Removal Featured on The Rachel Maddow Show March 22, 2012 - 11:37am Addthis NNSA Administrator Thomas D’Agostino appeared live last night to break the news with Rachel Maddow that all remaining weapons-usable material has been successfully removed from Mexico. | Photo courtesy of the NNSA. NNSA Administrator Thomas D'Agostino appeared live last night to break the news with Rachel Maddow that all remaining weapons-usable material has been successfully removed from Mexico. | Photo courtesy of the NNSA. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What's the difference between HEU and LEU? Highly enriched uranium (HEU) has a greater than 20 percent

129

Supercomputing Our Way to a Clean Energy Future | Department of Energy  

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

Supercomputing Our Way to a Clean Energy Future Supercomputing Our Way to a Clean Energy Future Supercomputing Our Way to a Clean Energy Future August 6, 2012 - 2:34pm Addthis Using computer modeling technology from Lawrence Livermore National Laboratory (LLNL), truck manufacturer Navistar is able to improve vehicle fuel efficiency and durability without the expense of wind tunnel testing. | Photo courtesy of LLNL Livermore Valley Open Campus. Using computer modeling technology from Lawrence Livermore National Laboratory (LLNL), truck manufacturer Navistar is able to improve vehicle fuel efficiency and durability without the expense of wind tunnel testing. | Photo courtesy of LLNL Livermore Valley Open Campus. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs

130

Transphorm Takes Energy Efficiency to a New Level | Department of Energy  

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

Transphorm Takes Energy Efficiency to a New Level Transphorm Takes Energy Efficiency to a New Level Transphorm Takes Energy Efficiency to a New Level February 24, 2012 - 1:20pm Addthis Transphorm's gallium nitride semiconductors could be used to make operating photovoltaic panels, like these on the roof of the Research Support Facility, motor drives and transistors more energy efficient. | Photo courtesy of National Renewable Energy Laboratory. Transphorm's gallium nitride semiconductors could be used to make operating photovoltaic panels, like these on the roof of the Research Support Facility, motor drives and transistors more energy efficient. | Photo courtesy of National Renewable Energy Laboratory. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are the key facts?

131

Supercomputing Our Way to a Clean Energy Future | Department of Energy  

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

Supercomputing Our Way to a Clean Energy Future Supercomputing Our Way to a Clean Energy Future Supercomputing Our Way to a Clean Energy Future August 6, 2012 - 2:34pm Addthis Using computer modeling technology from Lawrence Livermore National Laboratory (LLNL), truck manufacturer Navistar is able to improve vehicle fuel efficiency and durability without the expense of wind tunnel testing. | Photo courtesy of LLNL Livermore Valley Open Campus. Using computer modeling technology from Lawrence Livermore National Laboratory (LLNL), truck manufacturer Navistar is able to improve vehicle fuel efficiency and durability without the expense of wind tunnel testing. | Photo courtesy of LLNL Livermore Valley Open Campus. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs

132

Lab Breakthrough: Lead-free Solder | Department of Energy  

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

Lead-free Solder Lead-free Solder Lab Breakthrough: Lead-free Solder May 24, 2012 - 10:45am Addthis Iver Anderson, senior metallurgist at Ames Laboratory, explains the importance of lead-free solder in taking hazardous lead out of the environment by eliminating it from discarded computers and electronics that wind up in landfills. Anderson led a team that developed a tin-silver-copper replacement for traditional lead-tin solder that has been adopted by more than 50 companies worldwide. View the entire Lab Breakthrough playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs "Many creative solutions to problems in one field can be borrowed from another field..." Dr. Iver Anderson, Ames National Lab senior metallurgist Dr. Iver Anderson, Ames National Laboratory materials scientist, developed

133

Commercial Ethanol Turns Dross to Dollars for Rural Iowans | Department of  

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

Commercial Ethanol Turns Dross to Dollars for Rural Iowans Commercial Ethanol Turns Dross to Dollars for Rural Iowans Commercial Ethanol Turns Dross to Dollars for Rural Iowans September 28, 2011 - 3:23pm Addthis American farmers harvest 80 million acres of corn each autumn. The corn stover usually left on a hewn field can be processed into a renewable transportation fuel called bioethanol. | Image courtesy of POET American farmers harvest 80 million acres of corn each autumn. The corn stover usually left on a hewn field can be processed into a renewable transportation fuel called bioethanol. | Image courtesy of POET Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are the key facts? Farmers, truck operators, farm equipment distributors and agricultural laborers all benefit from the emerging bioethanol market in

134

Iron-based Material Paves Way for New Superconductors | Department of  

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

Iron-based Material Paves Way for New Superconductors Iron-based Material Paves Way for New Superconductors Iron-based Material Paves Way for New Superconductors February 12, 2013 - 6:26pm Addthis Brookhaven physicists Weidong Si (left) and Qiang Li look into the vacuum chamber where the new high-field iron-based superconductors are made through a process called pulsed-laser deposition. Brookhaven physicists Weidong Si (left) and Qiang Li look into the vacuum chamber where the new high-field iron-based superconductors are made through a process called pulsed-laser deposition. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How much better is this film? Under an intense 30-tesla magnetic field, the film carried a record-high 200,000 amperes per square centimeter.

135

Zombie Replicants to Outperform the Living | Department of Energy  

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

Zombie Replicants to Outperform the Living Zombie Replicants to Outperform the Living Zombie Replicants to Outperform the Living February 8, 2013 - 5:08pm Addthis The first stage of the "zombie cell" only moderately heated, the cell is now pure silica and needed a gold coating for a scanning electron microscope to image it. | Photo courtesy of Sandia National Laboratories The first stage of the "zombie cell" only moderately heated, the cell is now pure silica and needed a gold coating for a scanning electron microscope to image it. | Photo courtesy of Sandia National Laboratories Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs Is it just silica? Other porous material structures, relying on titanium instead of silica, have been formed using the organic template technique.

136

Ask the Directors: Secretary Chu to Host Live Chat on the Energy Innovation  

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

Ask the Directors: Secretary Chu to Host Live Chat on the Energy Ask the Directors: Secretary Chu to Host Live Chat on the Energy Innovation Hubs Ask the Directors: Secretary Chu to Host Live Chat on the Energy Innovation Hubs March 5, 2012 - 12:32pm Addthis Secretary Chu is accepting questions on Facebook, Twitter and e-mail for the Energy Innovation Hub directors -- who are working to build better nuclear reactors, obtain fuel from sunlight and design the most energy efficient buildings to date. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How can I participate? Submit your questions on Facebook, Twitter (@energy), or send an e-mail to newmedia@hq.doe.gov, prior to or during the live event. Secretary Chu will host a live, streaming Q&A session with the directors of the Energy Innovation Hubs on Tuesday, March 6, at 2:15 p.m. EST at

137

America's Best Student Start-Up Companies Pitch for Your Vote | Department  

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

Best Student Start-Up Companies Pitch for Your Vote Best Student Start-Up Companies Pitch for Your Vote America's Best Student Start-Up Companies Pitch for Your Vote May 24, 2012 - 9:03am Addthis After pitching their business plan to panels of judges at the regional semifinal and final, six teams advanced to the national competition for a chance at the cash grand prize. | Energy Department file graphic. After pitching their business plan to panels of judges at the regional semifinal and final, six teams advanced to the national competition for a chance at the cash grand prize. | Energy Department file graphic. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How can I participate? You can select your favorite. UPDATE: Voting closed June 12 at 2 p.m. EDT. NuMat Technologies from

138

Lab Breakthrough: Asteroid Killer Simulation | Department of Energy  

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

Lab Breakthrough: Asteroid Killer Simulation Lab Breakthrough: Asteroid Killer Simulation Lab Breakthrough: Asteroid Killer Simulation July 5, 2012 - 12:07pm Addthis A supercomputer at Los Alamos National Laboratory is helping scientists understand how a nuclear detonation might affect an incoming, Earth-threatening asteroid. View the entire Lab Breakthrough playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What if we find an Earth-bound asteroid? If time is very short (less than a month), than there is probably nothing mankind can do. If our nuclear intercept is far enough away, then these computer simulations show most asteroid fragments will steer clear. Los Alamos National Laboratory's Bob Weaver took some time recently to talk about how his research would help avert a catastrophic asteroid

139

Transformative Battery Technology at the National Labs | Department of  

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

Transformative Battery Technology at the National Labs Transformative Battery Technology at the National Labs Transformative Battery Technology at the National Labs January 17, 2012 - 10:45am Addthis Vince Battaglia leads a behind-the-scenes tour of Berkeley Lab's Batteries for Advanced Transportation Technologies Program where researchers aim to improve batteries upon which the range, efficiency, and power of tomorrow's electric cars will depend. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are the key facts? Berkeley's Batteries for Advanced Transportation Technologies Program is developing lithium-ion technology to power a vehicle for 300 miles. Lithium-sulfur and lithium-air are "unknown known" technologies for the future of electric vehicle batteries.

140

WATCH LIVE: Talking the Higgs Boson with CERN | Department of Energy  

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

WATCH LIVE: Talking the Higgs Boson with CERN WATCH LIVE: Talking the Higgs Boson with CERN WATCH LIVE: Talking the Higgs Boson with CERN September 13, 2012 - 2:33pm Addthis WATCH LIVE: Talking the Higgs Boson with CERN Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs Where do I watch? To watch this livestream, go to energy.gov/live. Tune in to a special livestream at energy.gov/live on Friday, Sept. 14 at 10 a.m. ET for a science lecture about the Higgs boson with Joe Incandela, head spokesperson for the CMS experiment at CERN's Large Hadron Collider. Hosted by Secretary of Energy Steven Chu, tune in to the livestream to hear about the research conducted by CERN and the Energy Department. Addthis Related Articles WATCH LIVE: Talking the Higgs Boson with CERN

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141

Lab Breakthrough: Nanomaterials Discoveries Lead to Possible Cancer  

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

Lab Breakthrough: Nanomaterials Discoveries Lead to Possible Cancer Lab Breakthrough: Nanomaterials Discoveries Lead to Possible Cancer Treatment Lab Breakthrough: Nanomaterials Discoveries Lead to Possible Cancer Treatment June 4, 2012 - 3:05pm Addthis Argonne nanoscientist Elena Rozhkova is studying ways to enlist nanoparticles to treat brain cancer. This nano-bio technology may eventually provide an alternative form of therapy that targets only cancer cells and does not affect normal living tissue. View the entire Lab Breakthrough playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What is a nano-bio catalyst? A nanoparticle that triggers specific reactions in cells. The particle attaches to unwanted (tumor) cells, and when researchers shine light on them, they kill the cells through oxidation.

142

Day 1: Innovation at the 2013 ARPA-E Summit | Department of Energy  

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

Day 1: Innovation at the 2013 ARPA-E Summit Day 1: Innovation at the 2013 ARPA-E Summit Day 1: Innovation at the 2013 ARPA-E Summit February 26, 2013 - 2:48pm Addthis Secretary of Energy Steven Chu speaks at the 2013 ARPA-E Energy Innovation Summit. | Photo by Sarah Gerrity. Secretary of Energy Steven Chu speaks at the 2013 ARPA-E Energy Innovation Summit. | Photo by Sarah Gerrity. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How can I participate? Watch for live event updates at twitter.com/energy. The fourth annual ARPA-E Energy Innovation Summit kicked off yesterday near Washington, D.C. bringing together energy thought leaders, and highlighting technologies with a high potential to change the way we generate, store, use and think about energy. For three days, entrepreneurs, investors and industry thought leaders

143

13 Early-Career Scientists Receive Top Presidential Award | Department of  

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

13 Early-Career Scientists Receive Top Presidential Award 13 Early-Career Scientists Receive Top Presidential Award 13 Early-Career Scientists Receive Top Presidential Award July 26, 2012 - 12:37pm Addthis The Department awardees are being recognized for their efforts in a variety of fields – from advances in power electronics for the electric grid to innovations in scientific computation to new physics developments. | Photo courtesy of Argonne National Laboratory. The Department awardees are being recognized for their efforts in a variety of fields - from advances in power electronics for the electric grid to innovations in scientific computation to new physics developments. | Photo courtesy of Argonne National Laboratory. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs

144

Lab Breakthrough: Fermilab Accelerator Technology | Department of Energy  

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

Fermilab Accelerator Technology Fermilab Accelerator Technology Lab Breakthrough: Fermilab Accelerator Technology May 14, 2012 - 10:51am Addthis At Fermilab, scientists are collaborating with other laboratories and industry to optimize the manufacturing processes for a new type of powerful accelerator that uses superconducting niobium cavities. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs Where are these 30,000 particle accelerators? Most of them in medicine and manufacturing fields. They treat cancer, cure inks on cereal boxes, sterilize medical supplies, create better shrink wrap, spot suspicious cargo, clean up dirty drinking water, and help design drugs. Fermi National Accelerator Laboratory scientist Stuart Henderson took some time discuss the role of particle accelerators in basic science,

145

Powering Curiosity: Lab Tech Goes to Mars | Department of Energy  

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

Curiosity: Lab Tech Goes to Mars Curiosity: Lab Tech Goes to Mars Powering Curiosity: Lab Tech Goes to Mars August 6, 2012 - 9:14am Addthis One of the first images taken by NASA's Curiosity rover was taken on the left-rear side of the rover looking directly into the sun. | Photo courtesy of NASA/JPL-Caltech. One of the first images taken by NASA's Curiosity rover was taken on the left-rear side of the rover looking directly into the sun. | Photo courtesy of NASA/JPL-Caltech. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What does this project do? Curiosity will perform 10 experiments over two years to determine whether Mars supports life or has in the past. This morning at 1:31 EDT the Mars rover Curiosity touched down on the Red Planet after a daredevil descent to begin its mission exploring a vast

146

Marius Stan Returning to Reddit To Tie Up Loose Ends | Department of Energy  

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

Marius Stan Returning to Reddit To Tie Up Loose Ends Marius Stan Returning to Reddit To Tie Up Loose Ends Marius Stan Returning to Reddit To Tie Up Loose Ends February 22, 2013 - 5:28pm Addthis Marius Stan, computational energy scientist from Argonne National Lab, submits his verification photo as part of an informal question and answer session with Internet users on the Ask Me Anything section of the social website Reddit on February 14, 2013. Marius Stan, computational energy scientist from Argonne National Lab, submits his verification photo as part of an informal question and answer session with Internet users on the Ask Me Anything section of the social website Reddit on February 14, 2013. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What is Reddit? Reddit is a social site where users post content voted "up" or

147

Transformative Battery Technology at the National Labs | Department of  

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

Transformative Battery Technology at the National Labs Transformative Battery Technology at the National Labs Transformative Battery Technology at the National Labs January 17, 2012 - 10:45am Addthis Vince Battaglia leads a behind-the-scenes tour of Berkeley Lab's Batteries for Advanced Transportation Technologies Program where researchers aim to improve batteries upon which the range, efficiency, and power of tomorrow's electric cars will depend. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are the key facts? Berkeley's Batteries for Advanced Transportation Technologies Program is developing lithium-ion technology to power a vehicle for 300 miles. Lithium-sulfur and lithium-air are "unknown known" technologies for the future of electric vehicle batteries.

148

Lab Breakthrough: X-ray Laser Captures Atoms and Molecules in Action |  

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

X-ray Laser Captures Atoms and Molecules in X-ray Laser Captures Atoms and Molecules in Action Lab Breakthrough: X-ray Laser Captures Atoms and Molecules in Action July 18, 2012 - 12:51pm Addthis The Linac Coherent Light Source at SLAC is the world's most powerful X-ray laser, which helps researchers understand the extreme conditions found in the hearts of stars and giant planets guiding research into nuclear fusion, the mechanism that powers the sun. View the entire Lab Breakthrough playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How is the LCLS different? Rather than accelerate particles to collide them, it accelerates particles in a special way to create extremely bright bunches of photons. These pulses are about 10 billion times brighter and one thousand

149

Energy Innovation Hubs: Achieving Our Energy Goals with Science |  

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

Innovation Hubs: Achieving Our Energy Goals with Science Innovation Hubs: Achieving Our Energy Goals with Science Energy Innovation Hubs: Achieving Our Energy Goals with Science March 2, 2012 - 6:44pm Addthis Secretary Chu stops at Oak Ridge National Lab in February 2012 for a quick, nuclear-themed visit that included a tour of the Consortium for Advanced Simulation of Light Water Reactors (CASL) and a stop at the new Manufacturing Demonstration Facility (MDF). | Photo courtesy of Oak Ridge National Lab Secretary Chu stops at Oak Ridge National Lab in February 2012 for a quick, nuclear-themed visit that included a tour of the Consortium for Advanced Simulation of Light Water Reactors (CASL) and a stop at the new Manufacturing Demonstration Facility (MDF). | Photo courtesy of Oak Ridge National Lab Michael Hess Michael Hess

150

Who Will Be America's Next Top Energy Innovator? | Department of Energy  

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

1:31am 1:31am Addthis National Renewable Energy Laboratory scientists found multiple uses for thin film lithium ion conductors - for batteries and for solar cells. | Photo Courtesy of the National Renewable Energy Laboratory National Renewable Energy Laboratory scientists found multiple uses for thin film lithium ion conductors - for batteries and for solar cells. | Photo Courtesy of the National Renewable Energy Laboratory Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs Where can I vote? In January, vote for the companies you think will make the biggest impact energy.gov/topinnovator Who Will Be America's Next Top Energy Innovator? That's up to you to decide. In May, the Energy Department launched the "America's Next Top Energy

151

Lab Breakthrough: Exploring Matter at the Dawn of Time | Department of  

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

Exploring Matter at the Dawn of Time Exploring Matter at the Dawn of Time Lab Breakthrough: Exploring Matter at the Dawn of Time May 9, 2012 - 2:55pm Addthis Physicist Paul Sorensen describes discoveries made at the Relativistic Heavy Ion Collider (RHIC), a particle accelerator at Brookhaven National Laboratory. At RHIC, scientists from around the world study what the universe may have looked like in the first microseconds after its birth, helping us to understand more about why the physical world works the way it does - from the smallest particles to the largest stars. See the other Lab Breakthrough videos on the YouTube playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs "To me, it's like the first steps on the moon." Physicist Paul Sorensen discussing his work with fundamental

152

#LabChat: Science of the Very Fast and Very Small, June 11 at 2 pm EDT |  

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

#LabChat: Science of the Very Fast and Very Small, June 11 at 2 pm #LabChat: Science of the Very Fast and Very Small, June 11 at 2 pm EDT #LabChat: Science of the Very Fast and Very Small, June 11 at 2 pm EDT June 8, 2012 - 10:17am Addthis Greg Nielson holds a solar cell test prototype with a microscale lens array fastened to it. Together, the cell and lens help create a concentrated photovoltaic unit that when commercialized will revolutionize the way solar energy is collected. | Photo courtesy of Sandia National Lab Greg Nielson holds a solar cell test prototype with a microscale lens array fastened to it. Together, the cell and lens help create a concentrated photovoltaic unit that when commercialized will revolutionize the way solar energy is collected. | Photo courtesy of Sandia National Lab Michael Hess Michael Hess

153

Lab Breakthrough: ADM Leads to Petroleum-Free Glycol Production Facility |  

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

ADM Leads to Petroleum-Free Glycol Production ADM Leads to Petroleum-Free Glycol Production Facility Lab Breakthrough: ADM Leads to Petroleum-Free Glycol Production Facility May 22, 2012 - 9:38am Addthis Pacific Northwest National Laboratory discovered a viable way to deliver propylene glycol from feedstock, including glycerin byproducts. ADM licensed that technology and in 2010 completed construction and commissioning of its full-scale production facility for the sole purpose of commercializing the PGRS process. View the entire Lab Breakthrough playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What does this project do? Created a renewable alternative to petroleum-based propylene glycol. Primarily, it found a way to do the chemistry efficiently and

154

Tackling Big Data Together | Department of Energy  

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

Tackling Big Data Together Tackling Big Data Together Tackling Big Data Together February 21, 2013 - 5:43pm Addthis PNNL's Olympus supercomputer is one of the computational resources that will be used by members of the Northwest Institute for Advanced Computing. Other resources include the University of Washington's Hyak supercomputer and cloud computing. PNNL's Olympus supercomputer is one of the computational resources that will be used by members of the Northwest Institute for Advanced Computing. Other resources include the University of Washington's Hyak supercomputer and cloud computing. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs A powerful coupling: UW's eScience Institute has advanced data-driven discovery, and the university's computational programs in physics, chemistry and astronomy are

155

Energy Innovator Drops Costs for Titanium Metalwork | Department of Energy  

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

Innovator Drops Costs for Titanium Metalwork Innovator Drops Costs for Titanium Metalwork Energy Innovator Drops Costs for Titanium Metalwork March 13, 2012 - 12:42pm Addthis Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are the key facts? Iowa Powder Atomization Technology is one of 36 companies that licensed technology under an agreement with the National Lab as part of the America's Next Top Energy Innovator program. Titanium is the stuff aircrafts are made of, at least the important parts. It's an obvious material choice for aircraft engines and airframes with its high strength-to-weight ratio and resistance to corrosion. However, shaping the metal into complex shapes can be expensive. Using a heavier, easier-to-craft metal can be just as expensive because adding weight to an

156

#LabChat Recap: The Future of Biofuels | Department of Energy  

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

The Future of Biofuels The Future of Biofuels #LabChat Recap: The Future of Biofuels September 27, 2012 - 4:51pm Addthis Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs #LabChat: The Future of Biofuels Brian Pfleger, a synthetic biologist and metabolic engineer from the Great Lakes Bioenergy Research Center, stepped into the #LabChat to answer questions about his work developing advanced biofuels. Moderating the #LabChat was John Greenler, director of education and outreach for the center. Storified by Energy Department · Thu, Sep 27 2012 14:48:51 Great Lakes Bioenergy Research Center is one of three Energy Department facilities not only trying to develop the next generation of biofuels, but rather, trying to develop a new generation of biofuels. They are

157

Emissions Technology Gives Company Clean Win as Energy Innovator |  

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

Emissions Technology Gives Company Clean Win as Energy Innovator Emissions Technology Gives Company Clean Win as Energy Innovator Emissions Technology Gives Company Clean Win as Energy Innovator March 7, 2012 - 2:38pm Addthis Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How does this innovation work? A plasma reformer attached to the engine extracts hydrogen from the fuel. The device injects the hydrogen into the combustion process making the fuel burn more completely. A catalyst attached to the tailpipe cleans up 85 percent of remaining emissions. In just a few months, startup company Umpqua Energy will open its first manufacturing facility with 50 new employees producing an emission control system that can potentially reduce the emissions from vehicles by 90 percent. In a significant technological jump, the startup's system is scalable to

158

DOE Completes Sale of Northeast Home Heating Oil Stocks | Department of  

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

Completes Sale of Northeast Home Heating Oil Stocks Completes Sale of Northeast Home Heating Oil Stocks DOE Completes Sale of Northeast Home Heating Oil Stocks February 10, 2011 - 12:00pm Addthis Washington, DC - The U.S. Department of Energy (DOE) today has awarded contracts to four companies who successfully bid for the purchase of 1,000,000 barrels of heating oil from the Northeast Home Heating Oil Reserve storage sites in Groton and New Haven, CT. Hess Groton Terminal, Groton, CT Shell Trading U.S. Company 150,000 barrels Sprague Energy Corp. 100,000 barrels Magellan New Haven Terminal, New Haven, CT Hess Corporation 300,000 barrels Morgan Stanley 450,000 barrels Today's sale was the second held as part of the Department's initiative to convert the 1,984,253 barrel heating oil reserve to cleaner burning

159

America Chooses the Next Top Energy Innovator | Department of Energy  

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

America Chooses the Next Top Energy Innovator America Chooses the Next Top Energy Innovator America Chooses the Next Top Energy Innovator February 10, 2012 - 1:00pm Addthis The America’s Next Top Energy Innovator Challenge makes inventions and technologies developed at the U.S. Department of Energy’s 17 National Laboratories and the Y-12 National Security Complex available to innovative startups. | Photo courtesy of Lawrence Berkeley National Laboratory. The America's Next Top Energy Innovator Challenge makes inventions and technologies developed at the U.S. Department of Energy's 17 National Laboratories and the Y-12 National Security Complex available to innovative startups. | Photo courtesy of Lawrence Berkeley National Laboratory. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs

160

LiveChat Wed, 11/16, 2 pm ET: Industrial Energy Efficiency | Department of  

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

11/16, 2 pm ET: Industrial Energy Efficiency 11/16, 2 pm ET: Industrial Energy Efficiency LiveChat Wed, 11/16, 2 pm ET: Industrial Energy Efficiency November 14, 2011 - 1:40pm Addthis Do you have questions or ideas about how the U.S. Department of Energy can contribute to global competitiveness through industrial efficiency? Dr. Kathleen Hogan would like to hear them. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How can I participate? Send an email to Dr. Hogan at newmedia@hq.doe.gov, tweet to @energy with the hashtag #energymatters; or leave a question on Energy's Facebook page. Throughout the last two weeks, we've been highlighting specific examples of industrial and commercial energy efficiency measures - and how they are improving American competitiveness and the economy.

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to obtain the most current and comprehensive results.


161

Energy Matters: Industrial Energy Efficiency | Department of Energy  

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

Matters: Industrial Energy Efficiency Matters: Industrial Energy Efficiency Energy Matters: Industrial Energy Efficiency November 18, 2011 - 2:33pm Addthis On November 16, 2011, Deputy Assistant Secretary for Energy Efficiency Dr. Kathleen Hogan joined us for a live chat on Energy.gov to discuss the role of industrial energy efficiency in strengthening the American economy. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs On Wednesday, November 16th, Dr. Kathleen Hogan, Deputy Assistant Secretary for Energy Efficiency, discussed industrial energy efficiency on an Energy Matters video livechat. Dr. Hogan answered questions, submitted by industry professionals and the interested public via email, Facebook and Twitter, on how commercial building efficiency, advanced manufacturing, and corporate partnerships can

162

Transphorm Takes Energy Efficiency to a New Level | Department of Energy  

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

Transphorm Takes Energy Efficiency to a New Level Transphorm Takes Energy Efficiency to a New Level Transphorm Takes Energy Efficiency to a New Level February 24, 2012 - 1:20pm Addthis Transphorm's gallium nitride semiconductors could be used to make operating photovoltaic panels, like these on the roof of the Research Support Facility, motor drives and transistors more energy efficient. | Photo courtesy of National Renewable Energy Laboratory. Transphorm's gallium nitride semiconductors could be used to make operating photovoltaic panels, like these on the roof of the Research Support Facility, motor drives and transistors more energy efficient. | Photo courtesy of National Renewable Energy Laboratory. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are the key facts?

163

Leading the Charge: Tribal Women in Power | Department of Energy  

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

Tribal Women in Power Tribal Women in Power Leading the Charge: Tribal Women in Power October 22, 2012 - 4:19pm Addthis Andrea Alexander, Makah Tribe in Neah Bay (Washington)/Affiliated Tribes of Northwest Indians Andrea Alexander, Makah Tribe in Neah Bay (Washington)/Affiliated Tribes of Northwest Indians Kathy Mayo, Eagle Village in Upper Yukon (Alaska)/Tanana Chiefs Conference Kathy Mayo, Eagle Village in Upper Yukon (Alaska)/Tanana Chiefs Conference Tara Hess-McGeown, Washoe Tribe of Nevada and California/Intertribal Council of Nevada Tara Hess-McGeown, Washoe Tribe of Nevada and California/Intertribal Council of Nevada Andrea Alexander, Makah Tribe in Neah Bay (Washington)/Affiliated Tribes of Northwest Indians Kathy Mayo, Eagle Village in Upper Yukon (Alaska)/Tanana Chiefs Conference

164

Higgs Boson May Be Within Sight

 | Department of Energy  

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

Higgs Boson May Be Within Sight

 Higgs Boson May Be Within Sight

 Higgs Boson May Be Within Sight

 December 16, 2011 - 3:48pm Addthis Fermilab scientist Don Lincoln describes the concept of how the search for the Higgs boson is accomplished and also includes a brief explanation of the latest data revealed at CERN on Dec. 13. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What does this project do? Definitive proof in either direction will be enough for physicists to know if their theoretical structure of all matter in the universe is correct. These are exciting times in the world of particle physics.
 
Having completed two new experiments at the world's largest and highest-energy particle accelerator, physicists from the European

165

Top Student Team Wins $180,000 Toward Clean Energy Start Up | Department of  

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

Student Team Wins $180,000 Toward Clean Energy Start Up Student Team Wins $180,000 Toward Clean Energy Start Up Top Student Team Wins $180,000 Toward Clean Energy Start Up June 15, 2012 - 2:57pm Addthis Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs The winners were: Grand prize: NuMat Technologies from Northwestern University Second place: SolidEnergy Systems from Massachusetts Institute of Technology People's Choice: Navillum Nanotechnologies from University of Utah NuMat Technologies beat out five other finalists Wednesday to become the grand prize winner of the National Clean Energy Business Plan Competition, taking home $180,000 in prizes, which includes seed money for their company and additional prizes from sponsors including technical, design and legal assistance. SolidEnergy Systems came in second place, and Navillum

166

Lab Breakthrough: Microelectronic Photovoltaics | Department of Energy  

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

Microelectronic Photovoltaics Microelectronic Photovoltaics Lab Breakthrough: Microelectronic Photovoltaics June 7, 2012 - 9:31am Addthis Sandia developed tiny glitter-sized photovoltaic (PV) cells that could revolutionize solar energy collection. The crystalline silicon micro-PV cells will be cheaper and have greater efficiencies than current PV collectors. View the entire YouTube Lab Breakthroughs playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are MEMS? MEMS are microelectromechanical systems. MEMS are made up of components between 1 to 100 micrometers in size. MEMS devices generally range in size from 20 micrometers to a millimeter. Sandia National Lab semiconductor engineer Gregory Nielson and postdoctoral appointee Jose Luis Cruz-Campa recently took some time to discuss their

167

Lab Breakthrough: Neutron Science for the Fusion Mission | Department of  

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

Neutron Science for the Fusion Mission Neutron Science for the Fusion Mission Lab Breakthrough: Neutron Science for the Fusion Mission May 16, 2012 - 9:52am Addthis An accelerator team lead by Robert McGreevy at Oak Ridge National Laboratory is testing material - a critical role in building an experimental fusion reactor for commercial use. As part of the international coalition, they expect to have an operational reactor by 2050. View the entire Lab Breakthrough playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What is the difference between fusion and fission? Fission pulls molecules apart. This type of reactor runs nuclear power plants. Fusion puts molecules together. This type of reaction powers the Sun. Oak Ridge National Laboratory scientist Robert McGreevy explains the

168

Report: Tech Review Takes Snapshot of Energy Research | Department of  

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

Report: Tech Review Takes Snapshot of Energy Research Report: Tech Review Takes Snapshot of Energy Research Report: Tech Review Takes Snapshot of Energy Research July 26, 2012 - 2:50pm Addthis The Quadrennial Technology Review contains the seventeen Technology Assessments (TAs) meant to be accessible summaries of the techno-economic aspects and R&D opportunities in the most important energy technologies or systems. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What is the QTR? The Quadrennial Technology Review offers high-level views of the technical status and potential of various energy technologies. With 17 National Labs, hundreds of funded projects at research facilities, and thousands of the world's top scientists, the Energy Department is driving a significant amount of the research and development taking place

169

Ask the Directors: Secretary Chu to Host Live Chat on the Energy Innovation  

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

Ask the Directors: Secretary Chu to Host Live Chat on the Energy Ask the Directors: Secretary Chu to Host Live Chat on the Energy Innovation Hubs Ask the Directors: Secretary Chu to Host Live Chat on the Energy Innovation Hubs March 5, 2012 - 12:32pm Addthis Secretary Chu is accepting questions on Facebook, Twitter and e-mail for the Energy Innovation Hub directors -- who are working to build better nuclear reactors, obtain fuel from sunlight and design the most energy efficient buildings to date. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How can I participate? Submit your questions on Facebook, Twitter (@energy), or send an e-mail to newmedia@hq.doe.gov, prior to or during the live event. Secretary Chu will host a live, streaming Q&A session with the directors of the Energy Innovation Hubs on Tuesday, March 6, at 2:15 p.m. EST at

170

Status of Identification of VHE Gamma-Ray Sources  

SciTech Connect (OSTI)

With the recent advances made by Cherenkov telescopes such as H.E.S.S. the field of very high-energy (VHE) {gamma}-ray astronomy has recently entered a new era in which for the first time populations of Galactic sources such as e.g. Pulsar wind nebulae (PWNe) or Supernova remnants (SNRs) can be studied. However, while some of the new sources can be associated by positional coincidence as well as by consistent multi-wavelength data to a known counterpart at other wavelengths, most of the sources remain not finally identified. In the following, the population of Galactic H.E.S.S. sources will be used to demonstrate the status of the identifications, to classify them into categories according to this status and to point out outstanding problems.

Funk, Stefan; /SLAC

2006-09-28T23:59:59.000Z

171

Gamma Rays from Kaluza-Klein Dark Matter  

Science Journals Connector (OSTI)

A TeV gamma-ray signal from the direction of the Galactic center (GC) has been detected by the HESS experiment. Here, we investigate whether Kaluza-Klein (KK) dark matter annihilations near the GC can be the explanation. Including the contributions from internal bremsstrahlung as well as subsequent decays of quarks and ?leptons, we find a very flat gamma-ray spectrum which drops abruptly at the dark matter particle mass. For a KK mass of about 1TeV, this gives a good fit to the HESS data below 1TeV. A similar model, with gauge coupling roughly 3times as large and a particle mass of about 10TeV, would give both the correct relic density and a photon spectrum that fits the complete range of data.

Lars Bergstrm; Torsten Bringmann; Martin Eriksson; Michael Gustafsson

2005-04-08T23:59:59.000Z

172

Hybrid model of GeV-TeV gamma ray emission from Galactic Center  

E-Print Network [OSTI]

The observations of high energy $\\gamma$-ray emission from the Galactic center (GC) by HESS, and recently by Fermi, suggest the cosmic ray acceleration in the GC and possibly around the supermassive black hole. In this work we propose a lepton-hadron hybrid model to explain simultaneously the GeV-TeV $\\gamma$-ray emission. Both electrons and hadronic cosmic rays were accelerated during the past activity of the GC. Then these particles would diffuse outwards and interact with the interstellar gas and background radiation field. The collisions between hadronic cosmic rays with gas is responsible to the TeV $\\gamma$-ray emission detected by HESS. With fast cooling in the strong radiation field, the electrons would cool down and radiate GeV photons through inverse Compton scattering off the soft background photons. This scenario provides a natural explanation of the observed GeV-TeV spectral shape of $\\gamma$-rays.

Yi-Qing Guo; Qiang Yuan; Cheng Liu; Ai-Feng Li

2014-09-14T23:59:59.000Z

173

Multiwavelength campaign on the HBL PKS~2155-304 : A new insight on its spectral energy distribution  

E-Print Network [OSTI]

The blazar PKS~2155-304 was the target of a multiwavelength campaign from June to October 2013 which widely improves our knowledge of its spectral energy distribution. This campaign involved the NuSTAR satellite (3-79 keV), the Fermi Large Area Telescope (LAT, 100~MeV-300~GeV) and the High Energy Stereoscopic System (H.E.S.S.) array phase II (with an energy threshold of few tens of GeV). While the observations with NuSTAR extend the X-ray spectrum to higher energies than before, H.E.S.S. phase II, together with the use of the LAT PASS 8, enhance the coverage of the $\\gamma$-ray regime with an unprecedented precision. In this work, preliminary results from the multi-wavelength analysis are presented.

Sanchez, D A; Zaborov, D; Parson, D; Madejski, G M; NuSTAR, A Furniss On behalf of the; Fermi,

2015-01-01T23:59:59.000Z

174

Celebrating Pi Day | Department of Energy  

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

Pi Day Pi Day Celebrating Pi Day March 14, 2013 - 1:29pm Addthis A mathematical formula discovered a decade ago in part by David H. Bailey (above), the Chief Technologist of the Computational Research Department at the Lawrence Berkeley National Laboratory, was the basis for researchers to find the sixty-trillionth binary digit of Pi-squared. | Photo Courtesy of Lawrence Berkely National Lab A mathematical formula discovered a decade ago in part by David H. Bailey (above), the Chief Technologist of the Computational Research Department at the Lawrence Berkeley National Laboratory, was the basis for researchers to find the sixty-trillionth binary digit of Pi-squared. | Photo Courtesy of Lawrence Berkely National Lab Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs

175

Kiwis Take Home Engineering Win for Solar Home 'First Light' | Department  

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

Kiwis Take Home Engineering Win for Solar Home 'First Light' Kiwis Take Home Engineering Win for Solar Home 'First Light' Kiwis Take Home Engineering Win for Solar Home 'First Light' September 29, 2011 - 4:22pm Addthis “First Light,” the solar home from New Zealand, stands complete on the first day of the 2011 U.S. Department of Energy Solar Decathlon. The 25-student team from Victory University of Wellington won the Engineering Contest today, the fourth juried contest of the competition. "First Light," the solar home from New Zealand, stands complete on the first day of the 2011 U.S. Department of Energy Solar Decathlon. The 25-student team from Victory University of Wellington won the Engineering Contest today, the fourth juried contest of the competition. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs

176

Building a Better Battery for Vehicles and the Grid | Department of Energy  

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

Building a Better Battery for Vehicles and the Grid Building a Better Battery for Vehicles and the Grid Building a Better Battery for Vehicles and the Grid November 30, 2012 - 12:28pm Addthis Argonne scientists Ira Bloom (front) and Javier Bareño prepare a sample of battery materials for Raman spectroscopy, which is used to gather information regarding the nature of the materials present in the sample. | Photo courtesy of Argonne National Laboratory. Argonne scientists Ira Bloom (front) and Javier Bareño prepare a sample of battery materials for Raman spectroscopy, which is used to gather information regarding the nature of the materials present in the sample. | Photo courtesy of Argonne National Laboratory. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs

177

Lab Breakthrough: Exploring Matter at the Dawn of Time | Department of  

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

Lab Breakthrough: Exploring Matter at the Dawn of Time Lab Breakthrough: Exploring Matter at the Dawn of Time Lab Breakthrough: Exploring Matter at the Dawn of Time May 9, 2012 - 2:55pm Addthis Physicist Paul Sorensen describes discoveries made at the Relativistic Heavy Ion Collider (RHIC), a particle accelerator at Brookhaven National Laboratory. At RHIC, scientists from around the world study what the universe may have looked like in the first microseconds after its birth, helping us to understand more about why the physical world works the way it does - from the smallest particles to the largest stars. See the other Lab Breakthrough videos on the YouTube playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs "To me, it's like the first steps on the moon."

178

Lab Breakthrough: Better Fiber for Better Products | Department of Energy  

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

Better Fiber for Better Products Better Fiber for Better Products Lab Breakthrough: Better Fiber for Better Products May 2, 2012 - 9:47am Addthis Researchers at Idaho National Laboratory have developed a cost-effective method for the continuous production of alpha silicon carbide fiber. The exceptionally strong, lightweight fiber could enable significant performance improvements in many everyday products. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What could Alpha Silicon Carbide Fibers produce? Lighter and longer-lasting vehicle body structures that are 3 to 6 times stronger than those using steel. Utilities could deploy lighter, stronger power lines. Idaho National Laboratory researcher John Garnier recently took some time to explain how the carbon fibers he and George Griffith invented could

179

Lab Breakthrough: Fusion Research Leads to Antiterrorism Device |  

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

Fusion Research Leads to Antiterrorism Device Fusion Research Leads to Antiterrorism Device Lab Breakthrough: Fusion Research Leads to Antiterrorism Device June 26, 2012 - 12:17pm Addthis Researchers at the Princeton Plasma Physics Laboratory developed an antiterrorism device that can detect and identify sources of dangerous radiation that could be used in a dirty bomb. See the other Lab Breakthrough videos on the YouTube playlist. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What is MINDS? MINDS stands for Miniature Integrated Nuclear Detection System The system detects and identifies radiological conditions under a variety of real-world environments - for instance in a shipping yard, at an airport, or public building. Princeton Plasma Physics Laboratory's Charles Gentile, Lead Developer of

180

Helmets Designed by Supercomputers Help Warfighters at Home | Department of  

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

Helmets Designed by Supercomputers Help Warfighters at Home Helmets Designed by Supercomputers Help Warfighters at Home Helmets Designed by Supercomputers Help Warfighters at Home December 26, 2012 - 1:40pm Addthis Paul Taylor, right, and John Ludwigsen, center, both researchers with Sandia’s Terminal Ballistics Technology Department, and Corey Ford, a neurologist at the University of New Mexico's Health Sciences Center, discuss their research on traumatic brain injuries. | Photo by Randy Montoya Paul Taylor, right, and John Ludwigsen, center, both researchers with Sandia's Terminal Ballistics Technology Department, and Corey Ford, a neurologist at the University of New Mexico's Health Sciences Center, discuss their research on traumatic brain injuries. | Photo by Randy Montoya Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs

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While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Energy Tricks Lead to Cost-Saving Treats | Department of Energy  

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

Energy Tricks Lead to Cost-Saving Treats Energy Tricks Lead to Cost-Saving Treats Energy Tricks Lead to Cost-Saving Treats October 31, 2013 - 10:34am Addthis Halloween LED lights are a common, energy efficient decoration. | Photo courtesy of Jeremy Roof, Creative Commons. Halloween LED lights are a common, energy efficient decoration. | Photo courtesy of Jeremy Roof, Creative Commons. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What does this mean for me? Compact fluorescent porch lights, more efficient candy manufacturing and LED street lights are just a few ways Halloween has become a more energy efficient holiday. Want to save more energy? Learn more tips and tricks to ward off energy waste as temperatures cool. Check out Energy Saver for more ways to save energy and money.

182

Reddit AMA: Marius Stan, energy researcher and Breaking Bad actor |  

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

Reddit AMA: Marius Stan, energy researcher and Breaking Bad actor Reddit AMA: Marius Stan, energy researcher and Breaking Bad actor Reddit AMA: Marius Stan, energy researcher and Breaking Bad actor February 14, 2013 - 12:36pm Addthis Marius Stan, computational energy scientist from Argonne National Lab, submits his verification photo as part of an informal question and answer session with Internet users on the Ask Me Anything section of the social website Reddit. Marius Stan, computational energy scientist from Argonne National Lab, submits his verification photo as part of an informal question and answer session with Internet users on the Ask Me Anything section of the social website Reddit. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What is an Reddit AMA? AMA stands for "Ask me anything."

183

Toward positional cloning of everblooming gene (evb) in plants: a BAC library of Rosa chinensis cv. old blush  

E-Print Network [OSTI]

Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved by: Chair of Committee, Hongbin Zhang Committee Members... chinensis cv. Old Blush. (August 2005) Gregory Hess, B.S., University of Texas at Arlington Chair of Advisory Committee: Dr. Hongbin Zhang A majority of commercial rose varieties bloom repeatedly throughout the year, as compared to most rose species...

Hess, Gregory

2006-10-30T23:59:59.000Z

184

The development and operational testing of an experimental reactor for gas-liquid-solid reaction systems at high temperatures and pressures  

E-Print Network [OSTI]

shaft. With the impeller in place and rotating, gas was drawn into the top port and ejected at the impeller mount. The reactor pressure was monitored via the transducer port. The transducer was a Viatran Pressure Transducer, model 103. The liquid...THE DEVELOPMENT AND OPERATIONAL TESTING OF AN EXPERIMENTAL REACTOR FOR GAS-LIQUID-SOLID REACTION SYSTEMS AT HIGH TEMPERATURES AND PRESSURES A Thesis by RICHARD KENNETH HESS Submitted to the Graduate College of Texas A&M University in partial...

Hess, Richard Kenneth

2012-06-07T23:59:59.000Z

185

Steam Partnerships: Case Study of Improved Energy Efficiency  

E-Print Network [OSTI]

Steam Partnerships: Case Study of Improved Energy Efficiency Michael V. Calogero, P.E., CEM Robert E. Hess Novi Leigh Director, Northeast Operations Sr. Energy Systems Engineer Energy Systems Engineer Armstrong Service, Inc ABSTRACT Effective.... 1998-2001 operating data from client's laundry processing facility. 3. Turner, Wayne C., Energy Management Handbook, 2 nd edition, 1993. 4. Armstrong International, Inc., Steam Conservation Guidelines for Condensate Drainage, Handbook N-1 01, 1997...

Calogero, M. V.; Hess, R. E.; Leigh, N.

186

Table 3. Top Five Retailers of Electricity, with End Use Sectors, 2010  

U.S. Energy Information Administration (EIA) Indexed Site

District of Columbia" District of Columbia" "1. Potomac Electric Power Co","Investor-Owned",3388490,2014044,1374446,"-","-" "2. Constellation NewEnergy, Inc","Other Provider",2427380,"-",2369901,12091,45388 "3. PEPCO Energy Services","Other Provider",2099946,1012,2098934,"-","-" "4. Washington Gas Energy Services","Other Provider",1759773,39513,1720260,"-","-" "5. Hess Retail Natural Gas and Elec. Acctg.","Other Provider",801256,"-",536225,265031,"-" "Total Sales, Top Five Providers",,10476845,2054569,8099766,277122,45388 "Percent of Total State Sales",,88,97,88,100,14

187

Table 3. Top Five Retailers of Electricity, with End Use Sectors, 2010  

U.S. Energy Information Administration (EIA) Indexed Site

Maine" Maine" "1. NextEra Energy Power Marketing LLC","Other Provider",3876276,3548267,316308,11701,"-" "2. Dominion Retail Inc","Other Provider",1308742,"-",1308742,"-","-" "3. Constellation NewEnergy, Inc","Other Provider",987998,"-",704002,283996,"-" "4. Hess Retail Natural Gas and Elec. Acctg.","Other Provider",593324,"-",593324,"-","-" "5. Suez Energy Resources North America","Other Provider",483466,"-",483466,"-","-" "Total Sales, Top Five Providers",,7249806,3548267,3405842,295697,"-" "Percent of Total State Sales",,63,81,83,10

188

"2012 Retail Power Marketers Sales- Transportation"  

U.S. Energy Information Administration (EIA) Indexed Site

Transportation" Transportation" "(Data from form EIA-861 schedule 4B)" "Entity","State","Ownership","Customers (Count)","Sales (Megawatthours)","Revenues (Thousands Dollars)","Average Price (cents/kWh)" "Northern California Power Agny","CA","Political Subdivision",1,366159,20892,5.705718 "Constellation NewEnergy, Inc","CT","Power Marketer",2,33816,2550.5,7.5422877 "HESS CORPORATION","CT","Power Marketer",1,106596,5490,5.1502871 "American PowerNet","DC","Power Marketer",1,148928,8161,5.4798292 "Reliant Energy Northeast LLC","DC","Power Marketer",1,200803,13152,6.5497029

189

Table 3. Top Five Retailers of Electricity, with End Use Sectors, 2010  

U.S. Energy Information Administration (EIA) Indexed Site

Rhode Island" Rhode Island" "1. The Narragansett Electric Co","Investor-Owned",5287440,3068731,1938910,279799,"-" "2. Constellation NewEnergy, Inc","Other Provider",594900,"-",387627,191168,16105 "3. TransCanada Power Mktg Ltd","Other Provider",501659,"-","-",501659,"-" "4. Hess Retail Natural Gas and Elec. Acctg.","Other Provider",389583,"-",116875,272708,"-" "5. Glacial Energy Holdings","Other Provider",283973,"-",283973,"-","-" "Total Sales, Top Five Providers",,7057555,3068731,2727385,1245334,16105 "Percent of Total State Sales",,90,98,74,100,59

190

Flight test measurements and theoretical lift prediction for flow energizers  

E-Print Network [OSTI]

1551. 5, Near Fuselage). 30. Flight Test vs. W/. nd Tunnel vs (01551. 5, Near Nacelle) Hess Code Ress Code 49 31. Effect of Flight Velocity (C1551. 5, Along Center of Glove). 32. Ef feet of F11ght Velocity (C15 51. 5, Near Fuselag 33. Ef r.... Ef feet of Indicated Fl 1. ght Velocity on 9 (01551. 5). 6B 46. Effect of Indicated Flight Velocity on 9 (01551. 7). 47. Wake Survey f' or Fuselage-Mounted Ener gi zer 01551. 2 6 r) 71 48. C Compar and C1551 isons for C155 1 . 2, C1 551 . 5...

Pradhan, Amit Aravind

2012-06-07T23:59:59.000Z

191

Subjects: Trematoda And Trematode Diseases, Part 2: Supergenera And Genera C  

E-Print Network [OSTI]

(life history; excretory system).--Miller, G. C., 1958a, 702.-- Mueller, J. F., 1934c , 341-344, pi. 42, figs . 1 -7. ? Mueller, J. F. ; & Van Cleave , H. J., 1932a, 125, 128, 129, pi. 25, fig. 65. ? Odhner, T . , 1911h, 522.-Pear se, A. s'. , 1924b.... , 1946a,258,538,figs. 32a-d. elegans van Beneden, P. J., 1858a, 60-63, 169, 170, 189, 190, 196, pl. 7, figs. 1-8 (Sciaena aquila; gills; Belgium).--van Beneden, P. J. ; ? Hesse, C. ?. , 1864a, 125-126.--Benham, W. B. S. , 1901a, 53 (Sciaena agilis...

Roach, Katharine F.; Breen, Virginia L.

1964-01-01T23:59:59.000Z

192

Pulsar model of the high energy phenomenology of LS 5039  

E-Print Network [OSTI]

Under the assumption that LS 5039 is a system composed by a pulsar rotating around an O6.5V star in a $\\sim 3.9$ day orbit, we present the results of a theoretical modeling of the high energy phenomenology observed by the High Energy Stereoscopy Array (H.E.S.S.). This model (including detailed account of the system geometry, Klein-Nishina inverse Compton, $\\gamma$-$\\gamma$ absorption, and cascading) is able to describe well the rich observed phenomenology found in the system at all timescales, both flux and spectrum-wise.

Agnieszka Sierpowska-Bartosik; Diego F. Torres

2007-10-04T23:59:59.000Z

193

A comparison of the physical and chemical properties of asbestos, mineral wool and fibrous glass insulation material  

E-Print Network [OSTI]

. Rodney J. Simmons for his procedural guidance, worthwile advice and for providing a comfortable environment in the laboratory. I wish to thank Dr. J. Don Byrd and Nr. Rashid Dadabhoy of Cameron Iron Works, Inc. for providing the scanning electron.... Edited by L. Y. Hess. Noyes Data Corp. Park Ridge, N. J. pp. 7-28. (1979). Meyers, Donald L. How to Do Your Own Home Insula- ~tin . Harper and Row. New York. pp. 52-64. (1978). Close, Paul D. Buildin Insulation A Treatise on the Princi les and A...

Cowan, Michael Galen

2012-06-07T23:59:59.000Z

194

Dark matter conversion as a source of boost factor for explaining the cosmic ray positron and electron excesses  

E-Print Network [OSTI]

In interacting multi-component dark matter (DM) models, if the DM components are nearly degenerate in mass and the interactions between them are strong enough, the relatively heavy DM components can be converted into lighter ones at late time after the thermal decoupling. Consequently, the relic density of the lightest DM component can be considerably enhanced at late time. This may contribute to an alternative source of boost factor required to explain the positron and electron excesses reported by the recent DM indirect search experiments such as PAMELA, Fermi-LAT and HESS etc..

Ze-Peng Liu; Yue-Liang Wu; Yu-Feng Zhou

2011-12-17T23:59:59.000Z

195

The MAGIC of SSC and how it affects LHC  

E-Print Network [OSTI]

We discuss the phenomenology of Supercritical String Cosmology (SSC) in the context of Dark Matter constraints on supersymmetric particle physics models at LHC. We also link our results with recent findings of the MAGIC, H.E.S.S. and Fermi Telescopes on delayed arrival of highly energetic photons from the distant Galaxies and GRBs. The link is provided by a concrete model of space-time foam in (supercritical) string theory, involving space-time defects and their interaction with matter in a brane world scenario.

Nick E. Mavromatos; D. V. Nanopoulos

2009-02-09T23:59:59.000Z

196

The high-energy gamma-ray light curve of PSR B1259 -63  

E-Print Network [OSTI]

The high-energy gamma-ray light curve of the binary system PSR B1259 -63, is computed using the approach that successfully predicted the spectrum at periastron. The simultaneous INTEGRAL and H.E.S.S. spectra taken 16 days after periastron currently permit both a model with dominant radiative losses, high pulsar wind Lorentz factor and modest efficiency as well as one with dominant adiabatic losses, a slower wind and higher efficiency. In this paper we shown how the long-term light curve may help to lift this degeneracy.

J. G. Kirk; Lewis Ball; S. Johnston

2005-09-30T23:59:59.000Z

197

Limits on an Energy Dependence of the Speed of Light from a Flare of the Active Galaxy PKS 2155-304  

E-Print Network [OSTI]

In the past few decades, several models have predicted an energy-dependence of the speed of light in the context of quantum gravity. For cosmological sources such as active galaxies, this minuscule effect can add up to measurable photon-energy dependent time lags. In this paper a search for such time lags during the H.E.S.S. observations of the exceptional very high energy flare of the active galaxy PKS 2155-304 on 28 July in 2006 is presented. Since no significant time lag is found, lower limits on the energy scale of speed of light modifications are derived.

H. E. S. S. Collaboration; :; F. Aharonian

2008-10-20T23:59:59.000Z

198

Dynamic pressure response of water flow between closely spaced roughened flat plates  

E-Print Network [OSTI]

of MASTER OF SCIENCE May 1993 Major Subject: Mechanical Engineering DYNAMIC PRESSURE RESPONSE OF WATER FLOW BETWEEN CLOSELY SPACED ROUGHENED FLAT PLATES A Thesis by JOHN CHARLES HESS Approved as to style and content by: Robert E. DeOtte, Jr. (Co.... S. , Texas A&M University Co-Chairs of Advisory Committee: Dr. R. E. DeOtte, Jr, Dr. G, L, Morrison A flat plate tester was designed and built to determine friction factors and dynamic pressures for water flow over smooth, knurl, and cavity...

Hess, John Charles

2012-06-07T23:59:59.000Z

199

#LabChat: What is Dark Energy? Oct 25 at 2pm ET | Department of Energy  

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

What is Dark Energy? Oct 25 at 2pm ET What is Dark Energy? Oct 25 at 2pm ET #LabChat: What is Dark Energy? Oct 25 at 2pm ET October 23, 2012 - 3:03pm Q&A #LabChat Oct 25, 2 pm ET | These physicists are using advanced telescopes and cameras to look for proof of dark energy. Ask them your questions. Ask Us Addthis What is dark energy? Learn about the force we think accounts for three-quarters of the mass and energy in the known universe. What is dark energy? Learn about the force we think accounts for three-quarters of the mass and energy in the known universe. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How can I participate? Send us your questions via Twitter (@ENERGY) using #labchat. Email us your questions at newmedia@hq.doe.gov. This Thursday, October 25, at 2 p.m. EDT, three physicists studying dark

200

#LabChat Q&A: Biofuels of the Future, Sept. 26 at 2 pm EDT | Department of  

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

#LabChat Q&A: Biofuels of the Future, Sept. 26 at 2 pm EDT #LabChat Q&A: Biofuels of the Future, Sept. 26 at 2 pm EDT #LabChat Q&A: Biofuels of the Future, Sept. 26 at 2 pm EDT September 25, 2012 - 1:23pm Addthis Great Lakes Bioenergy Research Center researcher and University of Wisconsin - Madison Assistant Professor Brian Pfleger explains the term "next generation biofuel." You can ask him questions on Sept. 26 at 2 p.m. EDT by using #LabChat in a tweet. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs How can I participate? Send us your questions via Twitter (@ENERGY) using #labchat. Email us your questions at newmedia@hq.doe.gov. This Wednesday, September 26, at 2 p.m. EDT, Great Lakes Bioenergy Research Center will host #LabChat Q&A: Biofuels of the Future. The University of

Note: This page contains sample records for the topic "amerada hess hess" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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201

Decaying dark matter as a probe of unification and TeV spectroscopy  

Science Journals Connector (OSTI)

In supersymmetric unified theories the dark matter particle can decay, just like the proton, through grand unified interactions with a lifetime of order of ?1026??sec. Its decay products can be detected by several experimentsincluding Fermi, HESS, PAMELA, ATIC, and IceCubeopening our first direct window to physics at the TeV scale and simultaneously at the unification scale ?1016??GeV. We consider possibilities for explaining the electron/positron spectra observed by HESS, PAMELA, and ATIC, and the resulting predictions for the gamma-ray, electron/positron, and neutrino spectra as will be measured, for example, by Fermi and IceCube. The discovery of an isotropic, hard gamma ray spectral feature at Fermi would be strong evidence for dark matter and would disfavor astrophysical sources such as pulsars. Substructure in the cosmic ray spectra probes the spectroscopy of new TeV-mass particles. For example, a preponderance of electrons in the final state can result from the lightness of selectrons relative to squarks. Decaying dark matter acts as a sparticle injector with an energy reach potentially higher than the LHC. The resulting cosmic ray flux depends only on the values of the weak and unification scales.

Asimina Arvanitaki; Savas Dimopoulos; Sergei Dubovsky; Peter W. Graham; Roni Harnik; Surjeet Rajendran

2009-09-09T23:59:59.000Z

202

A Gamma-Ray Burst/Pulsar for Cosmic-Ray Positrons with a Dark Matter-like Spectrum  

E-Print Network [OSTI]

We propose that a nearby gamma-ray burst (GRB) or GRB-like (old, single and short-lived) pulsar/supernova remnant/microquasar about 10^{5-6} years ago may be responsible for the excesses of cosmic-ray positrons and electrons recently observed by the PAMELA, ATIC/PPB-BETS, Fermi and HESS experiments. We can reproduce the smooth Fermi/HESS spectra as well as the spiky ATIC/PPB-BETS spectra. The spectra have a sharp cutoff that is similar to the dark matter predictions, sometimes together with a line (not similar), since higher energy cosmic-rays cool faster where the cutoff/line energy marks the source age. A GRB-like astrophysical source is expected to have a small but finite spread in the cutoff/line as well as anisotropy in the cosmic-ray and diffuse gamma-ray flux, providing a method for the Fermi and future CALET experiments to discriminate between dark matter and astrophysical origins.

Kunihito Ioka

2010-06-15T23:59:59.000Z

203

Simultaneous multi-wavelength campaign on PKS 2005-489 in a high state  

E-Print Network [OSTI]

The high-frequency peaked BL Lac object PKS 2005-489 was the target of a multi-wavelength campaign with simultaneous observations in the TeV gamma-ray (H.E.S.S.), GeV gamma-ray (Fermi/LAT), X-ray (RXTE, Swift), UV (Swift) and optical (ATOM, Swift) bands. This campaign was carried out during a high flux state in the synchrotron regime. The flux in the optical and X-ray bands reached the level of the historical maxima. The hard GeV spectrum observed with Fermi/LAT connects well to the very high energy (VHE, E>100GeV) spectrum measured with H.E.S.S. with a peak energy between ~5 and 500 GeV. Compared to observations with contemporaneous coverage in the VHE and X-ray bands in 2004, the X-ray flux was ~50 times higher during the 2009 campaign while the TeV gamma-ray flux shows marginal variation over the years. The spectral energy distribution during this multi-wavelength campaign was fit by a one zone synchrotron self-Compton model with a well determined cutoff in X-rays. The parameters of a one zone SSC model ar...

Abramowski, A; Aharonian, F; Akhperjanian, A G; Anton, G; Barnacka, A; de Almeida, U Barres; Bazer-Bachi, A R; Becherini, Y; Becker, J; Behera, B; Bernlhr, K; Bochow, A; Boisson, C; Bolmont, J; Bordas, P; Borrel, V; Brucker, J; Brun, F; Brun, P; Bulik, T; Bsching, I; Casanova, S; Cerruti, M; Chadwick, P M; Charbonnier, A; Chaves, R C G; Cheesebrough, A; Chounet, L -M; Clapson, A C; Coignet, G; Conrad, J; Dalton, M; Daniel, M K; Davids, I D; Degrange, B; Deil, C; Dickinson, H J; Djannati-Ata, A; Domainko, W; Drury, L O'C; Dubois, F; Dubus, G; Dyks, J; Dyrda, M; Egberts, K; Eger, P; Espigat, P; Fallon, L; Farnier, C; Fegan, S; Feinstein, F; Fernandes, M V; Fiasson, A; Fontaine, G; Frster, A; Fling, M; Gabici, S; Gallant, Y A; Gast, H; Grard, L; Gerbig, D; Giebels, B; Glicenstein, J F; Glck, B; Goret, P; Gring, D; Hague, J D; Hampf, D; Hauser, M; Heinz, S; Heinzelmann, G; Henri, G; Hermann, G; Hinton, J A; Hoffmann, A; Hofmann, W; Hofverberg, P; Horns, D; Jacholkowska, A; de Jager, O C; Jahn, C; Jamrozy, M; Jung, I; Kastendieck, M A; Katarzy?ski, K; Katz, U; Kaufmann, S; Keogh, D; Kerschhaggl, M; Khangulyan, D; Khlifi, B; Klochkov, D; Klu?niak, W; Kneiske, T; Komin, Nu; Kosack, K; Kossakowski, R; Laffon, H; Lamanna, G; Lenain, J -P; Lennarz, D; Lohse, T; Lopatin, A; Lu, C -C; Marandon, V; Marcowith, A; Masbou, J; Maurin, D; Maxted, N; McComb, T J L; Medina, M C; Mhault, J; Nguyen, N; Moderski, R; Moulin, E; Naumann-Godo, M; de Naurois, M; Nedbal, D; Nekrassov, D; Nicholas, B; Niemiec, J; Nolan, S J; Ohm, S; Olive, J-F; Wilhelmi, E de Oa; Opitz, B; Ostrowski, M; Panter, M; Arribas, M Paz; Pedaletti, G; Pelletier, G; Petrucci, P -O; Pita, S; Phlhofer, G; Punch, M; Quirrenbach, A; Raue, M; Rayner, S M; Reimer, A; Reimer, O; Renaud, M; Reyes, R de los; Rieger, F; Ripken, J; Rob, L; Rosier-Lees, S; Rowell, G; Rudak, B; Rulten, C B; Ruppel, J; Ryde, F; Sahakian, V; Santangelo, A; Schlickeiser, R; Schck, F M; Schnwald, A; Schwanke, U; Schwarzburg, S; Schwemmer, S; Shalchi, A; Sikora, M; Skilton, J L; Sol, H; Spengler, G; Stawarz, ?; Steenkamp, R; Stegmann, C; Stinzing, F; Sushch, I; Szostek, A; Tam, P H; Tavernet, J -P; Terrier, R; Tibolla, O; Tluczykont, M; Valerius, K; van Eldik, C; Vasileiadis, G; Venter, C; Vialle, J P; Viana, A; Vincent, P; Vivier, M; Vlk, H J; Volpe, F; Vorobiov, S; Vorster, M; Wagner, S J; Ward, M; Wierzcholska, A; Zajczyk, A; Zdziarski, A A; Zech, A; Zechlin, H -S; Abdo, A A; Ackermann, M; Ajello, M; Baldini, L; Ballet, J; Barbiellini, G; Bastieri, D; Bechtol, K; Bellazzini, R; Berenji, B; Blandford, R D; Bonamente, E; Borgland, A W; Bregeon, J; Brez, A; Brigida, M; Bruel, P; Buehler, R; Buson, S; Caliandro, G A; Cameron, R A; Cannon, A; Caraveo, P A; Carrigan, S; Casandjian, J M; Cavazzuti, E; Cecchi, C; elik, ; Chekhtman, A; Cheung, C C; Chiang, J; Ciprini, S; Claus, R; Cohen-Tanugi, J; Cutini, S; Dermer, C D; de Palma, F; Silva, E do Couto e; Drell, P S; Dubois, R; Dumora, D; Escande, L; Favuzzi, C; Ferrara, E C; Focke, W B; Fortin, P; Frailis, M; Fukazawa, Y; Fusco, P; Gargano, F; Gasparrini, D; Gehrels, N; Germani, S; Giglietto, N; Giommi, P; Giordano, F; Giroletti, M; Glanzman, T; Godfrey, G; Grenier, I A; Grove, J E; Guiriec, S; Hadasch, D; Hays, E; Horan, D; Hughes, R E; Jhannesson, G; Johnson, A S; Johnson, W N; Kamae, T; Katagiri, H; Kataoka, J; Kndlseder, J; Kuss, M; Lande, J; Latronico, L; Lee, S -H; Longo, F; Loparco, F; Lott, B; Lovellette, M N; Lubrano, P; Madejski, G M; Makeev, A; Mazziotta, M N; McConville, W; McEnery, J E; Michelson, P F; Mizuno, T; Monte, C; Monzani, M E; Morselli, A; Moskalenko, I V; Murgia, S; Nakamori, T; Nishino, S; Nolan, P L; Norris, J P; Nuss, E; Ohsugi, T; Okumura, A; Omodei, N; Orlando, E; Ormes, J F; Ozaki, M; Paneque, D; Panetta, J H; Parent, D; Pelassa, V; Pepe, M; Pesce-Rollins, M; Piron, F; Porter, T A; Rain, S; Rando, R; Razzano, M; Sadrozinski, H F -W; Sanchez, D; Sander, A; Sgr, C; Siskind, E J; Smith, P D; Spandre, G; Spinelli, P; Strickman, M S; Suson, D J; Takahashi, H; Takahashi, T; Tanaka, T; Thayer, J B; Thayer, J G; Thompson, D J; Tibaldo, L; Torres, D F; Tosti, G; Tramacere, A; Troja, E; Uehara, T; Usher, T L; Vandenbroucke, J; Vianello, G; Vilchez, N; Vitale, V; Waite, A P; Wang, P; Winer, B L; Wood, K S; Yang, Z; Ylinen, T; Ziegler, M

2011-01-01T23:59:59.000Z

204

Neutrinos from the Galactic Center in the Light of its Gamma-Ray Detection at TeV Energy  

E-Print Network [OSTI]

We re-evaluate the event rate expected in km^3-scale detectors for neutrinos from the direction of the Galactic Center (GC) in light of recent spectral measurements obtained by the HESS instrument for ~TeV gamma-radiation from this direction. In the most plausible scenario the re-evaluated event rate is smaller than that previously calculated--and here re-calculated--on the basis of EGRET data. However, the GC TeV gamma-ray detections by the Whipple, CANGAROO, and HESS instruments, together with the strong indications for an overabundance of cosmic rays coming from the GC at EeV energies, strengthen the expectation for a detectable, TeV-PeV GC neutrino signal from proton-proton interactions in that region. If the TeV gamma-ray--EeV cosmic ray anisotropy connection is correct, this signal will be detectable within a year and half for km^3-scale neutrino detectors in the Northern Hemisphere at super-TeV energies and, significantly, should also be detectable in 1.6 years by the South Polar IceCube detector at energies > 10^14 eV. The GC neutrino signal should also produce a detectable signal from neutrino showering and resonant W^- production by anti-electron-neutrinos in the volume of a km^3-scale detector.

Roland M. Crocker; Fulvio Melia; Raymond R. Volkas

2005-02-10T23:59:59.000Z

205

The high-energy $\\gamma$-ray emission of AP Librae  

E-Print Network [OSTI]

The $\\gamma$-ray spectrum of the low-frequency-peaked BL Lac (LBL) object AP Librae is studied, following the discovery of very-high-energy (VHE; $E>100\\,{\\rm GeV}$) $\\gamma$-ray emission up to the TeV range by the H.E.S.S. experiment. This makes AP Librae one of the few VHE emitters of the LBL type. The measured spectrum yields a flux of $(8.8 \\pm 1.5_{\\rm stat} \\pm 1.8_{\\rm sys}) \\times 10^{-12}\\ {\\rm cm}^{-2} {\\rm s}^{-1}$ above 130 GeV and a spectral index of $\\Gamma = 2.65\\pm0.19_{\\rm stat}\\pm0.20_{\\rm sys}$. This study also makes use of \\textit{Fermi}-LAT, observations in the high energy (HE, E$>$100 MeV) range, providing the longest continuous light curve (5 years) ever published on this source. The source underwent a flaring event between MJD 56306-56376 in the HE range, with a flux increase of a factor 3.5 in the 14-day bin light curve and no significant variation in spectral shape with respect to the low-flux state. While the H.E.S.S., and (low state) \\textit{Fermi}-LAT fluxes are in good agreement ...

,

2014-01-01T23:59:59.000Z

206

Very high energy neutrino expectation from Fanaroff-Riley I sources  

E-Print Network [OSTI]

Fanaroff-Riley I radiogalaxies have been observed in TeV gamma-rays during the last decades. The origin of the emission processes related with this energy band is still under debate. Here we consider the case of the two closest Fanaroff-Riley I objects: Centaurus A and M87. Their entire broadband spectral energy distributions and variability fluxes show evidences that leptonic models are not sufficient to explain their fluxes above 100 GeV. Indeed, both objects have been imaged by LAT instrument aboard of Fermi telescope with measured spectra well connected with one-zone leptonic models. However, to explain the TeV spectra obtained with campaigns by H.E.S.S., for Centaurus A, and by VERITAS, MAGIC and H.E.S.S. for M87, different emission processes must be introduced. In this work we evoke hadronic scenarios to describe the TeV gamma-ray fluxes observed and to obtain the expected neutrino counterparts for each considered TeV campaign. With the obtained neutrino spectra we calculate, through Monte Carlo simulat...

Marinelli, A

2014-01-01T23:59:59.000Z

207

Aspen for short-rotation coppice plantations on agricultural sites in Germany: Effects of spacing and rotation time on growth and biomass production of aspen progenies  

Science Journals Connector (OSTI)

The suitability of agricultural sites for the production of woody biomass using fast-growing trees in short-rotation coppice plantations is being investigated in a joint multi-discipline project. The basis of this project are two trial plantations, one in Bavaria (south Germany) and the other in Hesse (central Germany). At the trial plantation in Bavaria (Abbachhof), six aspen progenies were planted in 1983 and tested for their suitability in different short-rotation periods (5 and 10 years) and three different spacings. At the other location in Hesse (Canstein), 14 aspen progenies were planted in 1986 and tested in a 10-year rotation period at one spacing. The progenies tested resulted from cross-pollinations of selected trees of European (Populus tremula L.) and American aspen (P. tremuloides Michx.). The trials show that hybrid aspen have a higher biomass production in short-rotations than progenies from European or American aspen. This is due to a lower mortality rate as well as to a higher growth rate. Even on sites low in nutrients and only average water availability hybrid aspen are capable of producing biomass on an average of 100t/ha (wood and bark including branches, absolutely dry) within a 10-year rotation period. The results show that the harvesting should be more than 10 years in order to achieve a maximum average biomass-production per year.

M Liesebach; G von Wuehlisch; H.-J Muhs

1999-01-01T23:59:59.000Z

208

NREL: Wind Research - Small Wind Turbine Webinars  

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

Small Wind Turbine Webinars Small Wind Turbine Webinars Here you will find webinars about small wind turbines that NREL hosted. Introducing WindLease(tm): Making Wind Energy Affordable NREL and the American Solar Energy Society (ASES) Wind Division co-hosted this webinar. (Text Version.) Date: August 1, 2013 Run Time: 40 minutes Joe Hess, VP of Business Development at United Wind, described United Wind's WindQuote and WindLease Program and explained the process from the dealer's and consumer's perspective. Texas Renewable Energy Industries Association NREL and the American Solar Energy Society (ASES) Wind Division co-hosted this webinar. (Text Version). Date: March 7, 2013 Run Time: 1 hour Russel Smith, Texas Renewable Energy Industries Association executive director and co-founder, provided an overview of the trade association

209

Distribution List: For Action: Joseph A. McBrearty, SC-3 John E. Surash, EM-50  

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

Distribution List: Distribution List: For Action: Joseph A. McBrearty, SC-3 John E. Surash, EM-50 Carol Battershell, GFO Richard Provencher, NE-ID William C. Gibson, FE-44 For Information: Barbara Jackson, SC-OR Patricia Schuneman, SC-CH Jeffrey C. Armstrong, SR David Hess, EMCBC Diane Snow, CBFO Michael Adams, NE-ID Kelly Gele, FE-4451 Department of Energy M&O CONTRACTOR PURCHASING SYSTEM BALANCED SCORECARD PERFORMANCE MANAGEMENT PROGRAM Core Performance Measures FY 2014 ISSUED: 08/21/2013 LEARNING AND GROWTH - Employee Satisfaction - Employee Alignment FINANCIAL - Optimum Cost Efficiency of Purchasing Operations - Financial Contributions of Procurement via Cost Savings MISSION VISION STRATEGY CUSTOMER - Customer Satisfaction INTERNAL BUSINESS

210

EMSL Research and Capability Development Proposals  

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

Accurate Embedded-Cluster Modeling of Insulators: Applications to Metal Oxide Surface Accurate Embedded-Cluster Modeling of Insulators: Applications to Metal Oxide Surface Chemistry and Surface Excitation Processes Project Duration: May 2008 - Sept 2010 Principal Investigator: Niri Govind, Senior Research Scientist II, High Performance Software Development, EMSL Co-Investigator: Karol Kowalski, Senior Research Scientist II, High Performance Software Development, EMSL Collaborators: Ken Beck (EMSL); Wayne Hess, Alan Joly, Roger Rousseau, Scott Chambers (FCSD); Peter Sushko, Alex Shluger (University College London) The accurate characterization of adsorbate reactivity and surface excitation processes at surfaces such as metal oxide interfaces is key to understanding, controlling, and designing molecular interactions and transformations for new energy sources. Electronic structure of defects and localized states and surface

211

DOE Awards Storage Contracts for Northeast Home Heating Oil Reserve |  

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

Awards Storage Contracts for Northeast Home Heating Oil Reserve Awards Storage Contracts for Northeast Home Heating Oil Reserve DOE Awards Storage Contracts for Northeast Home Heating Oil Reserve August 18, 2011 - 1:00pm Addthis Washington, DC - The U.S. Department of Energy (DOE) today announced that new contracts have been awarded for commercial storage of 650,000 barrels of ultra low sulfur distillate (ULSD) for the Northeast Home Heating Oil Reserve (NEHHOR). Awards were made to two companies for storage in New England--Hess Corporation in Groton, CT for 400,000 barrels, and Global Companies LLC in Revere, MA for 250,000 barrels. The procurement was conducted by the Defense Logistics Agency (DLA Energy), acting as the agent for DOE. Acquisition of storage services for an additional 350,000 barrels is planned to complete the establishment of a

212

Publications  

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

Naomi H. Harley [Clear All Filters] Naomi H. Harley [Clear All Filters] 2005 Gundel, Lara A., and Richard G. Sextro. "Aerosol physics and chemistry: indoor perspective, Chapter 10." In Aerosol Handbook: Measurement, Dosimetry and Health Effects, edited by Lev S. Ruzer and Naomi H. Harley, 189-224. Boca Raton: CRC Press, 2005. Price, Phillip N.. "Assessing uncertainties in the relationship between inhaled particle concentration, internal deposition and health effects, Chapter 9." In Aerosols Handbook: Measurement, Dosimetry and Health Effects, edited by Lev S. Ruzer and Naomi H. Harley, 157-188. CRC Press, Boca Raton, FL, 2005. 2000 Hopke, Philip K., Thomas B. Borak, John Doull, James E. Cleaver, Keith F. Eckerman, Linda C. S. Gundersen, Naomi H. Harley, Thomas C. Hess, Nancy E.

213

Additional Storage Contracts Awarded for Northeast Home Heating Oil Reserve  

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

Additional Storage Contracts Awarded for Northeast Home Heating Oil Additional Storage Contracts Awarded for Northeast Home Heating Oil Reserve Additional Storage Contracts Awarded for Northeast Home Heating Oil Reserve September 30, 2011 - 1:00pm Addthis Washington, DC - The U.S. Department of Energy (DOE) has completed the acquisition of commercial storage services for the one million barrel Northeast Home Heating Oil Reserve (NEHHOR). Two awards totaling 350,000 barrels have been made to companies that had earlier received storage contracts totaling 650,000 barrels. Hess Corporation in Groton, CT has been awarded a second contract for 100,000 barrels, increasing its storage obligation to 500,000 barrels. Global Companies LLC in Revere, MA was awarded a second contract for 250,000 barrels, increasing its obligation to 500,000 barrels.

214

Northeast Home Heating Oil Reserve  

Gasoline and Diesel Fuel Update (EIA)

Northeast Home Heating Oil Reserve Northeast Home Heating Oil Reserve Information on the Northeast Home Heating Oil Reserve is available from the U.S. Department of Energy (DOE) Office of Petroleum Reserves web site at http://www.fossil.energy.gov/programs/reserves/heatingoil/. Northeast Home Heating Oil Reserve (NEHHOR) inventories now classified as ultra-low sulfur distillate (15 parts per million) are not considered to be in the commercial sector and therefore are excluded from distillate fuel oil supply and disposition statistics in Energy Information Administration publications, such as the Weekly Petroleum Status Report, Petroleum Supply Monthly, and This Week In Petroleum. Northeast Home Heating Oil Reserve Terminal Operator Location (Thousand Barrels) Hess Corp. Groton, CT 500*

215

Department of Energy - ARPA-E Summit  

216

Process Design and Economics for Conversion of Lignocellulosic Biomass to Ethanol: Thermochemical Pathway by Indirect Gasification and Mixed Alcohol Synthesis  

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

Conversion of Lignocellulosic Conversion of Lignocellulosic Biomass to Ethanol Thermochemical Pathway by Indirect Gasification and Mixed Alcohol Synthesis A. Dutta, M. Talmadge, and J. Hensley National Renewable Energy Laboratory Golden, Colorado M. Worley and D. Dudgeon Harris Group Inc. Atlanta, Georgia and Seattle, Washington D. Barton, P. Groenendijk, D. Ferrari, and B. Stears The Dow Chemical Company Midland, Michigan E.M. Searcy, C.T. Wright, and J.R. Hess Idaho National Laboratory Idaho Falls, Idaho Technical Report NREL/TP-5100-51400 May 2011 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard

217

Additional Storage Contracts Awarded for Northeast Home Heating Oil Reserve  

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

Additional Storage Contracts Awarded for Northeast Home Heating Oil Additional Storage Contracts Awarded for Northeast Home Heating Oil Reserve Additional Storage Contracts Awarded for Northeast Home Heating Oil Reserve September 30, 2011 - 1:00pm Addthis Washington, DC - The U.S. Department of Energy (DOE) has completed the acquisition of commercial storage services for the one million barrel Northeast Home Heating Oil Reserve (NEHHOR). Two awards totaling 350,000 barrels have been made to companies that had earlier received storage contracts totaling 650,000 barrels. Hess Corporation in Groton, CT has been awarded a second contract for 100,000 barrels, increasing its storage obligation to 500,000 barrels. Global Companies LLC in Revere, MA was awarded a second contract for 250,000 barrels, increasing its obligation to 500,000 barrels.

218

Page not found | Department of Energy  

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

1121 - 1130 of 9,640 results. 1121 - 1130 of 9,640 results. Download CX-006789: Categorical Exclusion Determination Provision of Funds to the Confederated Salish and Kootenai Tribes (CSKT) for Purchase of Lake County Properties CX(s) Applied: B1.25 Date: 09/09/2011 Location(s): Lake County, Montana Office(s): Bonneville Power Administration http://energy.gov/nepa/downloads/cx-006789-categorical-exclusion-determination Article DOE Announces Award of a Contract to Repurchase Heating Oil for the Northeast Home Heating Oil Reserve WASHINGTON, DC - The U.S. Department of Energy today announced the award of a contract to Hess Corporation for the delivery of approximately 808,625 gallons (approximately 19,250 barrels) of home... http://energy.gov/articles/doe-announces-award-contract-repurchase-heating-oil-northeast-home-heating-oil-reserve

219

Hard X-ray emission from accretion shocks around galaxy clusters  

Science Journals Connector (OSTI)

We show that the hard X-ray (HXR) emission observed from several galaxy clusters is consistent with a simple model, in which the nonthermal emission is produced by inverse Compton scattering of cosmic microwave background photons by electrons accelerated in cluster accretion shocks: The dependence of HXR surface brightness on cluster temperature is consistent with that predicted by the model, and the observed HXR luminosity is consistent with the fraction of shock thermal energy deposited in relativistic electrons being 0.1. Alternative models, where the HXR emission is predicted to be correlated with the cluster thermal emission, are disfavored by the data. The implications of our predictions to future HXR observations (e.g. by NuStar, Simbol-X) and to (space/ground based) ?-ray observations (e.g. by Fermi, HESS, MAGIC, VERITAS) are discussed.

Doron Kushnir; Eli Waxman

2010-01-01T23:59:59.000Z

220

Hard X-ray emission from accretion shocks around galaxy clusters  

SciTech Connect (OSTI)

We show that the hard X-ray (HXR) emission observed from several galaxy clusters is consistent with a simple model, in which the nonthermal emission is produced by inverse Compton scattering of cosmic microwave background photons by electrons accelerated in cluster accretion shocks: The dependence of HXR surface brightness on cluster temperature is consistent with that predicted by the model, and the observed HXR luminosity is consistent with the fraction of shock thermal energy deposited in relativistic electrons being ?<0.1. Alternative models, where the HXR emission is predicted to be correlated with the cluster thermal emission, are disfavored by the data. The implications of our predictions to future HXR observations (e.g. by NuStar, Simbol-X) and to (space/ground based) ?-ray observations (e.g. by Fermi, HESS, MAGIC, VERITAS) are discussed.

Kushnir, Doron; Waxman, Eli, E-mail: doron.kushnir@weizmann.ac.il, E-mail: eli.waxman@weizmann.ac.il [Physics Faculty, Weizmann Institute of Science, PO Box 26, Rehovot (Israel)

2010-02-01T23:59:59.000Z

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221

Q-branch Raman scattering and modern kinetic thoery  

SciTech Connect (OSTI)

The program is an extension of previous APL work whose general aim was to calculate line shapes of nearly resonant isolated line transitions with solutions of a popular quantum kinetic equation-the Waldmann-Snider equation-using well known advanced solution techniques developed for the classical Boltzmann equation. The advanced techniques explored have been a BGK type approximation, which is termed the Generalized Hess Method (GHM), and conversion of the collision operator to a block diagonal matrix of symmetric collision kernels which then can be approximated by discrete ordinate methods. The latter method, which is termed the Collision Kernel method (CC), is capable of the highest accuracy and has been used quite successfully for Q-branch Raman scattering. The GHM method, not quite as accurate, is applicable over a wider range of pressures and has proven quite useful.

Monchick, L. [The Johns Hopkins Univ., Laurel, MD (United States)

1993-12-01T23:59:59.000Z

222

GLAST and Ground-Based Gamma-Ray Astronomy  

SciTech Connect (OSTI)

The launch of the Gamma-ray Large Area Space Telescope (GLAST) in 2007 will open the possibility of combined studies of astrophysical sources with existing ground-based VHE {gamma}-ray experiments such as H.E.S.S., VERITAS and MAGIC. Ground-based {gamma}-ray observatories provide complementary capabilities for spectral, temporal, spatial and population studies of high-energy {gamma}-ray sources. Joint observations cover a huge energy range, from 20 MeV to over 50 TeV. The LAT will survey the entire sky every three hours, allowing us to perform long-term monitoring of variable sources under uniform observation conditions and to detect flaring sources promptly. Imaging atmospheric Cherenkov telescopes (IACTs) will complement these observations with high-sensitivity pointed observations on regions of interest.

Funk, S.; Carson, J.E.; Giebels, B.; Longo, F.; McEnery, J.E.; Paneque, D.; Reimer, O.; Reyes, L.C.

2007-10-10T23:59:59.000Z

223

The Spectral Break Near TeV of $e^\\pm$ Cosmic Rays - Standard Physics or Dark Matter Origin?  

E-Print Network [OSTI]

The complex spectra of high energy ${\\rm e^\\pm}$ cosmic rays (CRs) observed near Earth are those expected from standard model physics. In particular, the observed hardening of their spectra with increasing energy reported by the AMS-02 collaboration can be produced by the transition of their energy-loss by inverse Compton scattering off Galactic light from the Thomson to the Klein-Nishina regime. The "cut-off" near TeV in the combined ${\\rm e^\\pm}$ flux observed with H.E.S.S can be due to pair production in ${\\rm e^\\pm}\\gamma$ collisions in source rather than a bump produced by the decay/annihilation of dark matter particles with a mass of $\\sim$TeV. Beyond this "cutoff", the $e^\\pm$ CRs are mostly produced by the decay of mesons from hadronic collisions of CR protons in/near source with a positron fraction $\\sim 0.57$.

Dado, Shlomo

2015-01-01T23:59:59.000Z

224

TIMING AND INTERSTELLAR SCATTERING OF 35 DISTANT PULSARS DISCOVERED IN THE PALFA SURVEY  

SciTech Connect (OSTI)

We have made extensive observations of 35 distant slow (non-recycled) pulsars discovered in the ongoing Arecibo PALFA pulsar survey. Timing observations of these pulsars over several years at Arecibo Observatory and Jodrell Bank Observatory have yielded high-precision positions and measurements of rotation properties. Despite being a relatively distant population, these pulsars have properties that mirror those of the previously known pulsar population. Many of the sources exhibit timing noise, and one underwent a small glitch. We have used multifrequency data to measure the interstellar scattering properties of these pulsars. We find scattering to be higher than predicted along some lines of sight, particularly in the Cygnus region. Finally, we present XMM-Newton and Chandra observations of the youngest and most energetic of the pulsars, J1856+0245, which has previously been associated with the GeV-TeV pulsar wind nebula HESS J1857+026.

Nice, D. J. [Department of Physics, Lafayette College, Easton, PA 18042 (United States); Altiere, E.; Farrington, D.; Popa, L.; Wang, Y. [Department of Physics, Bryn Mawr College, Bryn Mawr, PA 19010 (United States); Bogdanov, S.; Camilo, F. [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Cordes, J. M.; Brazier, A.; Chatterjee, S. [Astronomy Department, Cornell University, Ithaca, NY 14853 (United States); Hessels, J. W. T. [ASTRON, The Netherlands Institute for Radio Astronomy, Postbus 2, 7990-AA Dwingeloo (Netherlands); Kaspi, V. M. [Department of Physics, McGill University, Montreal, QC H3A 2T8 (Canada); Lyne, A. G.; Stappers, B. W. [Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom); Ransom, S. M. [NRAO, Charlottesville, VA 22903 (United States); Sanpa-arsa, S. [Department of Astronomy, University of Virginia, Charlottesville, VA 22903 (United States); Allen, B. [Max-Planck-Institut fuer Gravitationsphysik, D-30167 Hannover (Germany); Bhat, N. D. R. [Center for Astrophysics and Supercomputing, Swinburne University, Hawthorn, Victoria 3122 (Australia); Champion, D. J. [Max-Planck-Institut fuer Radioastronomie, D-53121 Bonn (Germany); Crawford, F. [Department of Physics and Astronomy, Franklin and Marshall College, Lancaster, PA 17604-3003 (United States); and others

2013-07-20T23:59:59.000Z

225

Collimation and Radiative Deceleration of Jets in TeV AGNs  

E-Print Network [OSTI]

We consider some implications of the rapid X-ray and TeV variability observed in M87 and the TeV blazars. We outline a model for jet focusing and demonstrate that modest radiative cooling can lead to recollimation of a relativistic jet in a nozzle having a very small cross-sectional radius. Such a configuration can produce rapid variability at large distances from the central engine and may explain recent observations of the HST-1 knot in M87. Possible applications of this model to TeV blazars are discussed. We also discuss a scenario for the very rapid TeV flares observed with HESS and MAGIC in some blazars, that accommodates the relatively small Doppler factors inferred from radio observations.

Amir Levinson; Omer Bromberg

2007-12-17T23:59:59.000Z

226

A Numerical Assessment of Cosmic-ray Energy Diffusion through Turbulent Media  

E-Print Network [OSTI]

How and where cosmic rays are produced, and how they diffuse through various turbulent media, represent fundamental problems in astrophysics with far reaching implications, both in terms of our theoretical understanding of high-energy processes in the Milky Way and beyond, and the successful interpretation of space-based and ground based GeV and TeV observations. For example, recent and ongoing detections, e.g., by Fermi (in space) and HESS (in Namibia), of $\\gamma$-rays produced in regions of dense molecular gas hold important clues for both processes. In this paper, we carry out a comprehensive numerical investigation of relativistic particle acceleration and transport through turbulent magnetized environments in order to derive broadly useful scaling laws for the energy diffusion coefficients.

Fatuzzo, Marco

2014-01-01T23:59:59.000Z

227

Neutrinos from dark matter annihilations at the galactic center  

Science Journals Connector (OSTI)

We discuss the prospects for detection of high energy neutrinos from dark matter (DM) annihilation at the galactic center (GC). Despite the large uncertainties associated with our poor knowledge of the distribution of dark matter in the innermost regions of the Galaxy, we determine an upper limit on the neutrino flux by requiring that the associated gamma-ray emission does not exceed the observed flux. We conclude that a neutrino flux from the GC will not be observable by Antares if dark matter is made of neutralinos with mass smaller than 650GeV, while for heavier neutralinos, corresponding to models that will soon be probed by HESS (high energy stereoscopic system), the upper limit on the neutrino flux is barely above the Antares sensitivity. The detection of a larger flux would either require an alternative explanation, in terms of astrophysical processes, or the adoption of other dark matter candidates, disfavouring the case for neutralinos.

Gianfranco Bertone; Emmanuel Nezri; Jean Orloff; Joseph Silk

2004-09-02T23:59:59.000Z

228

Cosmic Rays and Terrestrial Life: a Brief Review  

E-Print Network [OSTI]

"The investigation into the possible effects of cosmic rays on living organisms will also offer great interest." - Victor F. Hess, Nobel Lecture, December 12, 1936 High-energy radiation bursts are commonplace in our Universe. From nearby solar flares to distant GRBs, a variety of physical processes accelerate charged particles in a wide energy range, which subsequently reach the Earth. Such particles interact with, and contribute to a number of physical processes occurring in the Earth system. A large fraction of the energy of charged particles gets deposited in the atmosphere, ionizing the atmosphere, causing changes in atmospheric chemistry and affecting the global electric circuit. Remaining secondary particles contribute to the background dose of cosmic rays on the surface and parts of the subsurface region. Life has evolved since past ~ 3 billion years in presence of this background radiation, which itself has varied considerably during the period [1-3]. As demonstrated by the Miller-Urey experiment, lig...

Atri, Dimitra

2012-01-01T23:59:59.000Z

229

Phenomenology of Gamma-Ray Jets  

E-Print Network [OSTI]

We discuss some phenomenological aspects of $\\gamma$-ray emitting jets. In particular, we present calculations of the $\\gamma$-sphere and $\\pi$-sphere for various target photon fields, and employ them to demonstrate how $\\gamma$-ray observations at very high energies can be used to constraint the Doppler factor of the emitting plasma and the production of VHE neutrinos. We also consider the implications of the rapid TeV variability observed in M87 and the TeV blazars, and propose a model for the very rapid TeV flares observed with HESS and MAGIC in some blazars,that accommodates the relatively small Doppler factors inferred from radio observations. Finally, we briefly discuss the prospects for detecting VHE neutrinos from relativistic jets.

Amir Levinson

2007-09-10T23:59:59.000Z

230

Procedures of large scale noise mapping ? examples based on German projects  

Science Journals Connector (OSTI)

Noise mapping projects for the German Federal States Baden?Wuerttemberg Hesse and Schleswig?Holstein and for the cities Munich Frankfurt and Wiesbaden are presented. These large projects have been performed using newest softwaretechnology like fully automated parallel computing applying the PCSP technique (Program Controlled Segmented Processing) and by using all CPU cores of the noise mapping computer cluster (multithreading). With the noise mapping for all main roads and railways in Austria the 64 Bit technology has been applied ? this allows to handle even files of more than 10 GB without the need of manual intervention. The influence of these techniques on uncertainties is discussed using the strategy of DIN 45687 and it is shown that such complete 3D models are the optimal basis to develop noise reduction measures in the frame of Action Planning.

Markus Petz

2008-01-01T23:59:59.000Z

231

TenTen: A New Array of Multi-TeV Imaging Cherenkov Telescopes  

E-Print Network [OSTI]

The exciting results from H.E.S.S. point to a new population of gamma-ray sources at energies E > 10 TeV, paving the way for future studies and new discoveries in the multi-TeV energy range. Connected with these energies is the search for sources of PeV cosmic-rays (CRs) and the study of multi-TeV gamma-ray production in a growing number of astrophysical environments. TenTen is a proposed stereoscopic array (with a suggested site in Australia) of modest-sized (10 to 30m^2) Cherenkov imaging telescopes with a wide field of view (8 to 10deg diameter) optimised for the E~10 to 100 TeV range. TenTen will achieve an effective area of ~10 km^2 at energies above 10 TeV. We outline here the motivation for TenTen and summarise key performance parameters.

Rowell, G; Clay, R; Dawson, B; Denman, J; Protheroe, R; Smith, A G K; Thornton, G; Wild, N

2007-01-01T23:59:59.000Z

232

TenTen: A New Array of Multi-TeV Imaging Cherenkov Telescopes  

E-Print Network [OSTI]

The exciting results from H.E.S.S. point to a new population of gamma-ray sources at energies E > 10 TeV, paving the way for future studies and new discoveries in the multi-TeV energy range. Connected with these energies is the search for sources of PeV cosmic-rays (CRs) and the study of multi-TeV gamma-ray production in a growing number of astrophysical environments. TenTen is a proposed stereoscopic array (with a suggested site in Australia) of modest-sized (10 to 30m^2) Cherenkov imaging telescopes with a wide field of view (8 to 10deg diameter) optimised for the E~10 to 100 TeV range. TenTen will achieve an effective area of ~10 km^2 at energies above 10 TeV. We outline here the motivation for TenTen and summarise key performance parameters.

G. Rowell; V. Stamatescu; R. Clay; B. Dawson; J. Denman; R. Protheroe; A. G. K. Smith; G. Thornton; N. Wild

2007-10-10T23:59:59.000Z

233

Belowground Carbon Cycling Processes at the Molecular Scale: An EMSL Science Theme Advisory Panel Workshop  

SciTech Connect (OSTI)

As part of the Belowground Carbon Cycling Processes at the Molecular Scale workshop, an EMSL Science Theme Advisory Panel meeting held in February 2013, attendees discussed critical biogeochemical processes that regulate carbon cycling in soil. The meeting attendees determined that as a national scientific user facility, EMSL can provide the tools and expertise needed to elucidate the molecular foundation that underlies mechanistic descriptions of biogeochemical processes that control carbon allocation and fluxes at the terrestrial/atmospheric interface in landscape and regional climate models. Consequently, the workshop's goal was to identify the science gaps that hinder either development of mechanistic description of critical processes or their accurate representation in climate models. In part, this report offers recommendations for future EMSL activities in this research area. The workshop was co-chaired by Dr. Nancy Hess (EMSL) and Dr. Gordon Brown (Stanford University).

Hess, Nancy J.; Brown, Gordon E.; Plata, Charity

2014-02-21T23:59:59.000Z

234

Indirect Dark Matter Detection Limits from the Ultra-Faint Milky Way Satellite Segue 1  

SciTech Connect (OSTI)

We use new kinematic data from the ultra-faint Milky Way satellite Segue 1 to model its dark matter distribution and derive upper limits on the dark matter annihilation cross-section. Using gamma-ray ux upper limits from the Fermi satellite and MAGIC, we determine cross-section exclusion regions for dark matter annihilation into a variety of different particles including charged leptons. We show that these exclusion regions are beginning to probe the regions of interest for a dark matter interpretation of the electron and positron uxes from PAMELA, Fermi, and HESS, and that future observations of Segue 1 have strong prospects for testing such an interpretation. We additionally discuss prospects for detecting annihilation with neutrinos using the IceCube detector, finding that in an optimistic scenario a few neutrino events may be detected. Finally we use the kinematic data to model the Segue 1 dark matter velocity dispersion and constrain Sommerfeld enhanced models.

Essig, Rouven; /SLAC; Sehgal, Neelima; Strigari, Louis E.; /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Geha, Marla; /Yale U.; Simon, Joshua D.; /Carnegie Inst. Observ.

2011-08-11T23:59:59.000Z

235

Cosmic ray acceleration in supernova remnants and the FERMI/PAMELA data  

Science Journals Connector (OSTI)

We discuss recent observations of high energy cosmic ray positrons and electrons in the context of hadronic interactions in supernova remnants (SNRs), the suspected accelerators of galactic cosmic rays. Diffusive shock acceleration can harden the energy spectrum of secondary positrons relative to that of the primary protons and electrons and thus explain the rise in the positron fraction observed by PAMELA above 10GeV. We normalize the hadronic interaction rate by holding pion decay to be responsible for the gamma rays detected by HESS from some SNRs. By simulating the spatial and temporal distribution of SNRs in the Galaxy according to their known statistics, we are able to then fit the electron (plus positron) energy spectrum measured by Fermi. It appears that IceCube has good prospects for detecting the hadronic neutrino fluxes expected from nearby SNRs.

Markus Ahlers; Philipp Mertsch; Subir Sarkar

2009-12-29T23:59:59.000Z

236

The AGASA/SUGAR Anisotropies and TeV Gamma Rays from the Galactic Center: A Possible Signature of Extremely High-energy Neutrons  

E-Print Network [OSTI]

Recent analysis of data sets from two extensive air shower cosmic ray detectors shows tantalizing evidence of an anisotropic overabundance of cosmic rays towards the Galactic Center (GC) that ``turns on'' around $10^{18}$ eV. We demonstrate that the anisotropy could be due to neutrons created at the Galactic Center through charge-exchange in proton-proton collisions, where the incident, high energy protons obey an $\\sim E^{-2}$ power law associated with acceleration at a strong shock. We show that the normalization supplied by the gamma-ray signal from EGRET GC source 3EG J1746-2851 -- ascribed to pp induced neutral pion decay at GeV energies -- together with a very reasonable spectral index of 2.2, predicts a neutron flux at $\\sim 10^{18}$ eV fully consistent with the extremely high energy cosmic ray data. Likewise, the normalization supplied by the very recent GC data from the HESS air-Cerenkov telescope at \\~TeV energies is almost equally-well compatible with the $\\sim 10^{18}$ eV cosmic ray data. Interestingly, however, the EGRET and HESS data appear to be themselves incompatible. We consider the implications of this discrepancy. We discuss why the Galactic Center environment can allow diffusive shock acceleration at strong shocks up to energies approaching the ankle in the cosmic ray spectrum. Finally, we argue that the shock acceleration may be occuring in the shell of Sagittarius A East, an unusual supernova remnant located very close to the Galactic Center. If this connection between the anisotropy and Sagittarius A East could be firmly established it would be the first direct evidence for a particular Galactic source of cosmic rays up to energies near the ankle.

Roland M. Crocker; Marco Fatuzzo; Randy Jokipii; Fulvio Melia; Raymond R. Volkas

2004-08-10T23:59:59.000Z

237

On the Energy Spectra of GeV/TeV Cosmic Ray Leptons  

SciTech Connect (OSTI)

Recent observations of cosmic ray electrons from several instruments have revealed various degrees of deviation in the measured electron energy distribution from a simple power-law, in a form of an excess around 0.1 to 1 TeV energies. An even more prominent deviation and excess has been observed in the fraction of cosmic ray positrons around 10 and 100 GeV energies. These observations have received considerable attention and many theoretical models have been proposed to explain them. The models rely on either dark matter annihilation/decay or specific nearby astrophysical sources, and involve several additional assumptions regarding the dark matter distribution or particle acceleration. In this paper we show that the observed excesses in the electron spectrum may be easily reproduced without invoking any unusual sources other than the general diffuse Galactic components of cosmic rays. The model presented here assumes a power-law injection of electrons (and protons) by supernova remnants, and evaluates their expected energy spectrum based on a simple kinetic equation describing the propagation of charged particles in the interstellar medium. The primary physical effect involved is the Klein-Nishina suppression of the electron cooling rate around TeV energies. With a very reasonable choice of the model parameters characterizing the local interstellar medium, we can reproduce the most recent observations by Fermi and HESS experiments. Interestingly, in our model the injection spectral index of cosmic ray electrons becomes comparable to, or even equal to that of cosmic ray protons. The Klein-Nishina effect may also affect the propagation of the secondary e{sup {+-}} pairs, and therefore modify the cosmic ray positron-to-electron ratio. We have explored this possibility by considering two mechanisms for production of e{sup {+-}} pairs within the Galaxy. The first is due to the decay of {pi}{sup {+-}}'s produced by interaction of cosmic ray nuclei with ambient protons. The second source discussed here is due to the annihilation of the diffuse Galactic {gamma}-rays on the stellar photon field. We find that high positron fraction increasing with energy, as claimed by the PAMELA experiment, cannot be explained in our model with the conservative set of the model parameters. We are able, however, to reproduce the PAMELA (as well as Fermi and HESS) results assuming high values of the starlight and interstellar gas densities, which would be more appropriate for vicinities of supernova remnants. A possible solution to this problem may be that cosmic rays undergo most of their interactions near their sources due to the efficient trapping in the far upstream of supernova shocks by self-generated, cosmic ray-driven turbulence.

Stawarz, Lukasz; /KIPAC, Menlo Park /Jagiellonian U., Astron. Observ.; Petrosian, Vahe; /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., Appl. Phys. Dept.; Blandford, Roger D.; /KIPAC, Menlo Park

2011-08-19T23:59:59.000Z

238

Fermi Large Area Telescope Observations of the Supernova Remnant G8.7-0.1  

SciTech Connect (OSTI)

We present a detailed analysis of the GeV gamma-ray emission toward the supernova remnant (SNR) G8.7-0.1 with the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. An investigation of the relationship between G8.7-0.1 and the TeV unidentified source HESS J1804-216 provides us with an important clue on diffusion process of cosmic rays if particle acceleration operates in the SNR. The GeV gamma-ray emission is extended with most of the emission in positional coincidence with the SNR G8.7-0.1 and a lesser part located outside the western boundary of G8.7-0.1. The region of the gamma-ray emission overlaps spatially connected molecular clouds, implying a physical connection for the gamma-ray structure. The total gamma-ray spectrum measured with LAT from 200 MeV-100 GeV can be described by a broken power-law function with a break of 2.4 {+-} 0.6 (stat) {+-} 1.2 (sys) GeV, and photon indices of 2.10 {+-} 0.06 (stat) {+-} 0.10 (sys) below the break and 2.70 {+-} 0.12 (stat) {+-} 0.14 (sys) above the break. Given the spatial association among the gamma rays, the radio emission of G8.7-0.1, and the molecular clouds, the decay of p0s produced by particles accelerated in the SNR and hitting the molecular clouds naturally explains the GeV gamma-ray spectrum. We also find that the GeV morphology is not well represented by the TeV emission from HESS J1804-216 and that the spectrum in the GeV band is not consistent with the extrapolation of the TeV gamma-ray spectrum. The spectral index of the TeV emission is consistent with the particle spectral index predicted by a theory that assumes energy-dependent diffusion of particles accelerated in an SNR. We discuss the possibility that the TeV spectrum originates from the interaction of particles accelerated in G8.7-0.1 with molecular clouds, and we constrain the diffusion coefficient of the particles.

Ajello, M.; Allafort, A.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Baldini, L.; /INFN, Pisa; Ballet, J.; /AIM, Saclay; Barbiellini, G.; /INFN, Trieste /Trieste U.; Bastieri, D.; /INFN, Padua /Padua U.; Bechtol, K.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Bellazzini, R.; /INFN, Pisa; Berenji, B.; Blandford, R.D.; Bloom, E.D.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Bonamente, E.; /INFN, Perugia /Perugia U.; Borgland, A.W.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Bregeon, J.; /INFN, Pisa; Brigida, M.; /Bari Polytechnic /INFN, Bari; Bruel, P.; /Ecole Polytechnique; Buehler, R.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Buson, S.; /INFN, Padua /Padua U.; Caliandro, G.A.; /CSIC, Catalunya; Cameron, R.A.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Caraveo, P.A.; /IASF, Milan /AIM, Saclay /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /SLAC /Unlisted, US /Naval Research Lab, Wash., D.C. /Perugia U. /ASDC, Frascati /Stanford U., HEPL /KIPAC, Menlo Park /SLAC /Montpellier U. /ASDC, Frascati /Udine U. /INFN, Trieste /Bari Polytechnic /INFN, Bari /Naval Research Lab, Wash., D.C. /Stanford U., HEPL /KIPAC, Menlo Park /SLAC /Bari Polytechnic /INFN, Bari /Ecole Polytechnique /NASA, Goddard /Stanford U., HEPL /KIPAC, Menlo Park /SLAC /Udine U. /INFN, Trieste /Trieste Observ. /Hiroshima U. /Nagoya U. /Bari Polytechnic /INFN, Bari /INFN, Bari /ASDC, Frascati /INFN, Perugia /Perugia U. /Bari Polytechnic /INFN, Bari /ASDC, Frascati /Bari Polytechnic /INFN, Bari /Bologna Observ. /Stanford U., HEPL /KIPAC, Menlo Park /SLAC /Naval Research Lab, Wash., D.C. /Alabama U., Huntsville /CSIC, Catalunya /Hiroshima U. /NASA, Goddard /Hiroshima U.; /more authors..

2012-09-14T23:59:59.000Z

239

Hydrodynamic flow in Lower Cretaceous Muddy Sandstones, Rozet Field, Powder River Basin, Wyoming  

E-Print Network [OSTI]

structures are similar although no cross-bedding is observed (Fig. 15). Scour and fill within zone 2 does indicate fluvial development with overlying deltaic deposits. Overlying the fluvial-deltaic deposits of zone 2 is a massive and partly laminated.... Second Muddy zone; sandstone with ripples (r) and inclined laminations (i); scour and fill feature indicated by arrow. D: Skull Creek Shale; top slightly bioturbated overlying black poker chip shale. 37 e462 0 649 3 38 ROZET EAST AMERADA BOYD...

Smith, David Arthur

2012-06-07T23:59:59.000Z

240

Processos Ecossistêmicos em Planícies Alagáveis John M. Melack,  

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

25 a 541. 25 a 541. 1 Processos Ecossistêmicos em Planícies Alagáveis John M. Melack, 1 Evelyn M. L. M. Novo, 2 Bruce R. Forsberg, 3 Maria T. F. Piedade, 3 e Laurence Maurice, 4 As planícies de inundação representam um componente importante da Bacia Amazônica central e influenciam a hidrologia, a ecologia e a biogeoquímica. Hess et al. (2003) utilizaram uma classificação de dados de radar de abertura sintética com 100 m de resolução para uma quadratura de 1,77 milhões de km 2 na Amazônia central e identificaram 17% como várzeas, a maioria delas inundadas durante parte do ano. A produção líquida total atribuída às florestas inundadas (com exceção de incrementos lenhosos), macrófitas aquáticas, fitoplâncton e perifíton para a quadratura

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241

Entity State Ownership  

U.S. Energy Information Administration (EIA) Indexed Site

Northern California Power Agny Northern California Power Agny CA Political Subdivision 1 366,159 20,892.0 5.71 Constellation NewEnergy, Inc CT Power Marketer 2 33,816 2,550.5 7.54 HESS CORPORATION CT Power Marketer 1 106,596 5,490.0 5.15 American PowerNet DC Power Marketer 1 148,928 8,161.0 5.48 Reliant Energy Northeast LLC DC Power Marketer 1 200,803 13,152.0 6.55 Constellation NewEnergy, Inc IL Power Marketer 3 781,822 37,958.5 4.86 Massachusetts Bay Trans Authority MA Political Subdivision 3 55,875 6,106.0 10.93 NextEra Energy Power Marketing MA Power Marketer 1 284,229 7,954.4 2.80 American PowerNet MD Power Marketer 1 121,566 6,618.0 5.44 Constellation NewEnergy, Inc MD Power Marketer 2 151,684 13,222.6 8.72 PPL EnergyPlus LLC MD Power Marketer 1 9,108 544.5 5.98 Reliant Energy Northeast LLC MD Power Marketer 1 157,011 10,282.7 6.55 Constellation NewEnergy, Inc

242

Multiwavelength signals of dark matter annihilations at the Galactic center  

Science Journals Connector (OSTI)

We perform a systematic study of the multiwavelength signal induced by weakly interacting massive particle (WIMP) annihilations at the Galactic Center (GC). Referring to a generic WIMP dark matter (DM) scenario and depending on astrophysical inputs, we discuss spectral and angular features and sketch correlations among signals in the different energy bands. None of the components which have been associated to the GC source Sgr A*, nor the diffuse emission components from the GC region, have spectral or angular features typical of a DM source. Still, data sets at all energy bands, namely, the radio, near-infrared, x-ray and gamma-ray bands, contribute to place significant constraints on the WIMP parameter space. In general, the gamma-ray energy range is not the one with the largest signal to background ratio. In the case of large magnetic fields close to the GC, x-ray data give the tightest bounds. The emission in the radio band, which is less model dependent, is very constraining as well. The recent detection by HESS of a GC gamma-ray source, and of a diffuse gamma-ray component, limits the possibility of a DM discovery with the next generation of gamma-ray telescopes, like GLAST and CTA. We find that most of the region in the parameter space accessible to these instruments is actually already excluded at other wavelengths. On the other hand, there may be still an open window to improve constraints with wide-field radio observations.

Marco Regis and Piero Ullio

2008-08-04T23:59:59.000Z

243

Dark matter identification with gamma rays from dwarf galaxies  

SciTech Connect (OSTI)

If the positron fraction and combined electron-positron flux excesses recently observed by PAMELA, Fermi and HESS are due to dark matter annihilation into lepton-rich final states, the accompanying final state radiation (FSR) photons may be detected by ground-based atmospheric Cherenkov telescopes (ACTs). Satellite dwarf galaxies in the vicinity of the Milky Way are particularly promising targets for this search. We find that current and near-future ACTs have an excellent potential for discovering the FSR photons from dwarfs, although a discovery cannot be guaranteed due to large uncertainties in the fluxes resulting from lack of precise knowledge of dark matter distribution within the dwarfs. We also investigate the possibility of discriminating between different dark matter models based on the measured FSR photon spectrum. For typical parameters, we find that the ACTs can reliably distinguish models predicting dark matter annihilation into two-lepton final states from those favoring four-lepton final states (as in, for example, ''axion portal'' models). In addition, we find that the dark matter particle mass can also be determined from the FSR spectrum.

Perelstein, Maxim; Shakya, Bibhushan, E-mail: mp325@cornell.edu, E-mail: bs475@cornell.edu [Institute for High Energy Phenomenology, Newman Laboratory of Elementary Particle Physics, Cornell University, Ithaca, NY 14853 (United States)

2010-10-01T23:59:59.000Z

244

Non-thermal radio astronomy  

Science Journals Connector (OSTI)

Abstract This presentation starts with Karl Janskys discovery of cosmic radio emission in 1933 and notes the striking similarities to Hesss discovery of cosmic-rays in 1912. At first it was assumed that this radio emission was thermal but in 1939 Grote Reber discovered that it was stronger at longer wavelengths, requiring a non-thermal emission process. These discoveries had a revolutionary impact on astronomy and radio astronomy was born. The interpretation of this non-thermal radiation as synchrotron emission from high energy particles in the interstellar medium did not occur until the late 1940s but then it provided the link between radio astronomy and cosmic-ray research. Ginzburg, in particular, saw that cosmic-ray astrophysics was now possible using radio waves to trace sources of cosmic-rays. We discuss the discovery of extragalactic active galactic nuclei leading to the discovery of quasars and the first evidence for black holes in the nuclei of galaxies. We summarise the present status and future of some of the main radio telescopes used to image the non-thermal emission from external galaxies. Finally, we include a short description of the use of radio signals for the direct detection of cosmic-rays and UHE neutrinos.

R.D. Ekers

2014-01-01T23:59:59.000Z

245

Gamma-ray Astronomy: Implications for Fundamental Physics  

E-Print Network [OSTI]

Gamma-ray Astronomy studies cosmic accelerators through their electromagnetic radiation in the energy range between ~100 MeV and ~100 TeV. The present most sensitive observations in this energy band are performed, from space, by the Large Area Telescope onboard the Fermi satellite and, from Earth, by the Imaging Air Cherenkov Telescopes MAGIC, H.E.S.S. and VERITAS. These instruments have revolutionized the field of Gamma-ray Astronomy, discovering different populations of gamma-ray emitters and studying in detail the non-thermal astrophysical processes producing this high-energy radiation. The scientific objectives of these observatories include also questions of fundamental physics. With gamma-ray instruments we study the origin of Galactic cosmic rays, testing the hypothesis or whether they are mainly produced in supernova explosions. Also, we obtain the most sensitive measurement of the cosmic electron-positron spectrum between 20 GeV and 5 TeV. By observing the gamma-ray emission from sources at cosmological distances, we learn about the intensity and evolution of the extragalactic background light, and perform tests of Lorentz Invariance. Moreover, we can search for dark matter by looking for gamma-ray signals produced by its annihilation or decay in over-density sites. In this paper, we review the most recent results produced with the current generation of gamma-ray instruments in these fields of research.

Javier Rico

2011-11-28T23:59:59.000Z

246

In Wino Veritas? Indirect Searches Shed Light on Neutralino Dark Matter  

E-Print Network [OSTI]

Indirect detection constraints on gamma rays (both continuum and lines) have set strong constraints on wino dark matter. By combining results from Fermi-LAT and HESS, we show that: light nonthermal wino dark matter is strongly excluded; thermal wino dark matter is allowed only if the Milky Way dark matter distribution has a significant (>~0.4 kpc) core; and for plausible NFW and Einasto distributions the entire range of wino masses from 100 GeV up to 3 TeV can be excluded. The case of light, nonthermal wino dark matter is particularly interesting in scenarios with decaying moduli that reheat the universe to a low temperature. Typically such models have been discussed for low reheating temperatures, not far above the BBN bound of a few MeV. We show that constraints on the allowed wino relic density push such models to higher reheating temperatures and hence heavier moduli. Even for a flattened halo model consisting of an NFW profile with constant-density core inside 1 kpc and a density near the sun of 0.3 GeV/...

Fan, JiJi

2013-01-01T23:59:59.000Z

247

Searching for Smoking Gun Signatures of Decaying Dark Matter  

E-Print Network [OSTI]

Clear methods to differentiate between decaying and annihilating dark matter (DM) scenarios are still by and large unavailable. In this note, we study the potential astrophysical signatures of a new class of hidden sector decaying DM models, which can address the recent cosmic ray measurements. Such models may produce primary photons and/or neutrinos at large rates, correlated with the leptonic production. The photon and neutrino spectra will then contain sharp features at the TeV scale. We demonstrate the discovery potential for upcoming and future measurements by FERMI, HESS, AGIS and IceCube/DeepCore. We show that these models may be discovered in the near future. Specifically, measurements of diffuse gamma rays by FERMI can detect the start of a hard photon feature. We argue that these hard spectra can be produced by decaying dark matter and be consistent with current constraints, but are difficult to reconcile with models of annihilating DM. Consequently the measurement of a hard spectral feature, in correlation with the current cosmic ray measurements, will strongly favor decaying DM models. Finally we comment on the preliminary results from the Inner Galaxy presented by the FERMI collaboration.

Joshua T. Ruderman; Tomer Volansky

2009-07-27T23:59:59.000Z

248

EVIDENCE FOR A SECOND COMPONENT IN THE HIGH-ENERGY CORE EMISSION FROM CENTAURUS A?  

SciTech Connect (OSTI)

We report on an analysis of Fermi Large Area Telescope data from four years of observations of the nearby radio galaxy Centaurus A (Cen A). The increased photon statistics results in a detection of high-energy (>100 MeV) gamma-rays up to 50 GeV from the core of Cen A, with a detection significance of about 44{sigma}. The average gamma-ray spectrum of the core reveals evidence for a possible deviation from a simple power law. A likelihood analysis with a broken power-law model shows that the photon index becomes harder above E{sub b} {approx_equal} 4 GeV, changing from {Gamma}{sub 1} = 2.74 {+-} 0.03 below to {Gamma}{sub 2} = 2.09 {+-} 0.20 above. This hardening could be caused by the contribution of an additional high-energy component beyond the common synchrotron self-Compton jet emission. No clear evidence for variability in the high-energy domain is seen. We compare our results with the spectrum reported by H.E.S.S. in the TeV energy range and discuss possible origins of the hardening observed.

Sahakyan, N. [ICRANet, Piazz della Repubblica 10, I-65122 Pescara (Italy); Yang, R. [Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, CAS, Nanjing 210008 (China); Aharonian, F. A. [Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2 (Ireland); Rieger, F. M. [Max-Planck-Institut fuer Kernphysik, P.O. Box 103980, D-69029 Heidelberg (Germany)

2013-06-10T23:59:59.000Z

249

MODELING PHOTODISINTEGRATION-INDUCED TeV PHOTON EMISSION FROM LOW-LUMINOSITY GAMMA-RAY BURSTS  

SciTech Connect (OSTI)

Ultra-high-energy cosmic-ray heavy nuclei have recently been considered as originating from nearby low-luminosity gamma-ray bursts that are associated with Type Ibc supernovae. Unlike the power-law decay in long duration gamma-ray bursts, the light curve of these bursts exhibits complex UV/optical behavior: shock breakout dominated thermal radiation peaks at about 1 day, and, after that, nearly constant emission sustained by radioactive materials for tens of days. We show that the highly boosted heavy nuclei at PeV energy interacting with the UV/optical photon field will produce considerable TeV photons via the photodisintegration/photo-de-excitation process. It was later predicted that a thermal-like {gamma}-ray spectrum peaks at about a few TeV, which may serve as evidence of nucleus acceleration. The future observations by the space telescope Fermi and by the ground atmospheric Cherenkov telescopes such as H.E.S.S., VERITAS, and MAGIC will shed light on this prediction.

Liu Xuewen [Physics Department, Sichuan University, Chengdu 610065 (China); Wu Xuefeng; Lu Tan, E-mail: astrolxw@gmail.com, E-mail: xfwu@pmo.ac.cn, E-mail: t.lu@pmo.ac.cn [Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China)

2012-05-15T23:59:59.000Z

250

The GeV-TeV Connection in Galactic gamma-ray Sources  

SciTech Connect (OSTI)

Recent observations by atmospheric Cherenkov telescopes such as H.E.S.S. and MAGIC have revealed a large number of new sources of very-high-energy (VHE) gamma-rays above 100 GeV, mostly concentrated along the Galactic plane. At lower energies (100 MeV - 10 GeV) the satellite-based instrument EGRET revealed a population of sources clustering along the Galactic Plane. Given their adjacent energy bands a systematic correlation study between the two source classes seems appropriate. While only a few of the sources connect, both in terms of positional coincidence and spectral consistency, most of the detections occur only in one or the other energy domain. In these cases, for the first time consistent upper limits in the other energy band have been derived. Here, the populations of Galactic sources in both energy domains are characterized on observational as well as on theoretical grounds, followed by an interpretation on their similarities and differences. The observational data at this stage suggest rather different major source populations at GeV and TeV energies. With regards to preparations for the upcoming GLAST mission that will cover the energy range bridging GeV and TeV instruments this paper investigates the connection between the population of sources in these bands and concludes with predictions for commonly observable sources for GLAST-LAT detections.

Funk, S.; /KIPAC, Menlo Park; Reimer, O.; /Stanford U., HEPL /KIPAC, Menlo Park; Torres, Diego F.; /ICREA, Barcelona; Hinton, J.A.; /Leeds U.

2007-09-28T23:59:59.000Z

251

A Nonparametrized Ab Initio Determination of the Heat of Formation of Hydroxylamine, NH2OH  

SciTech Connect (OSTI)

Large basis set coupled cluster calculations through noniterative triple excitations were used to compute optimized structures, harmonic vibrational frequencies, atomization energies at 0 K and heats of formation at 298 K for hydroxylamine (NH2OH) and three related compounds (NH3, HNO and H2O2). The use of basis sets as large as augmented sextuple zeta resulted in small extrapolations to the complete basis set limit in order to achieve chemical accuracy ( 1 kcal/mol) in the thermodynamic properties. Complete basis set estimates were determined from several simple extrapolation formulas. In addition, four other corrections were applied to the frozen core atomization energies, (1) a zero point vibrational correction: (2) a core/valence correlation correction; (3) a Douglas-Kroll-Hess scalar relativistic correction; and (4) a first order atomic spin-orbit correction. For NH3 and HNO we incorporated a fifth correction term intended to approximate the difference between coupled cluster theory and the full configuration interact result. This correction was based on coupled cluster theory through iterative quadruple excitations (CCSDTQ). Excellent agreement with experiment was found for the heats of formation of NH3, HNO and H2O2. For NH2OH the best current estimate of the heat of formation at 298 K is 10.1 0.3 kcal/mol, which falls roughly midway between two experimental values at 12.0 2.4 and 7.9 1.5 kcal/mol.

Feller, David F.; Dixon, David A.

2003-12-04T23:59:59.000Z

252

Multi-epoch study of the gamma-ray emission within the M87 magnetosphere model  

E-Print Network [OSTI]

M87 is a nearby radio galaxy that has been detected at energies ranging from radio to very high energy (VHE) gamma-rays. Its proximity and its jet, misaligned from the line of sight allow detailed morphological studies. The imaging atmospheric Cherenkov technique (from 100 GeV to 10 TeV) provides insufficient angular resolution (few arc-minutes) to resolve the M87 emission region. However, the short time scale variability observed by MAGIC, HESS and VERITAS suggests the TeV emission is coming from a very small region, most likely close to the core. We propose that the variable TeV emission may be produced in a pair-starved region of the central black hole (BH) magnetosphere, i.e. a region where the density of the electron-positron plasma is not sufficient to completely screen the accelerating electric field. The funnel, a low density and magnetically dominated region around the poles, appears as a favourable site of low-density where a Blandford-Znajek process may explain the main properties of the TeV $\\gamm...

Vincent, Stephane

2014-01-01T23:59:59.000Z

253

The hard TeV spectrum of 1ES 0229+200: new clues from Swift  

E-Print Network [OSTI]

The BL Lac object 1ES 0229+200 (z=0.14) has been detected by HESS during observations taking place in 2005-2006. The TeV spectrum, when corrected for the absorption of gamma-ray photons through the interaction with the extragalactic background light, is extremely hard, even if the most conservative level for the background is considered. The case of 1ES 0229+200 is very similar to that of 1ES 1101-232, for which a possible explanation, in the framework of the standard one-zone synchrotron-self Compton model, is that the high-energy emission is synchrotron-self Compton radiation of electrons distributed as a power law with a large value of the minimum energy. In this scenario the hard TeV spectrum is accompanied by a very hard synchrotron continuum below the soft X-ray band. We will show that recent Swift observations of 1ES 0229+200 in the critical UV-X-ray band strongly support this model, showing the presence of the expected spectral break and hard continuum between the UV and the X-ray bands.

Tavecchio, F; Ghirlanda, G; Franceschini, A

2009-01-01T23:59:59.000Z

254

Constraints on Lorentz invariance violation from Fermi-Large Area Telescope observations of gamma-ray bursts  

Science Journals Connector (OSTI)

We analyze the MeV/GeV emission from four bright gamma-ray bursts (GRBs) observed by the Fermi Large Area Telescope to produce robust, stringent constraints on a dependence of the speed of light invacuo on the photon energy (vacuum dispersion), a form of Lorentz invariance violation (LIV) allowed by some quantum gravity (QG) theories. First, we use three different and complementary techniques to constrain the total degree of dispersion observed in the data. Additionally, using a maximally conservative set of assumptions on possible source-intrinsic, spectral-evolution effects, we constrain any vacuum dispersion solely attributed to LIV. We then derive limits on the QG energy scale (the energy scale where LIV-inducing QG effects become strong, EQG) and the coefficients of the Standard Model Extension. For the subluminal case (where high-energy photons propagate more slowly than lower-energy photons) and without taking into account any source-intrinsic dispersion, our most stringent limits (at 95%C.L.) are obtained from GRB 090510 and are EQG,1>7.6 times the Planck energy (EPl) and EQG,2>1.31011??GeV for linear and quadratic leading-order LIV-induced vacuum dispersion, respectively. These limits improve the latest constraints by Fermi and H.E.S.S. by a factor of ?2. Our results disfavor any class of models requiring EQG,1?EPl.

V. Vasileiou; A. Jacholkowska; F. Piron; J. Bolmont; C. Couturier; J. Granot; F. W. Stecker; J. Cohen-Tanugi; F. Longo

2013-06-04T23:59:59.000Z

255

Modeling Photodisintegration-induced TeV Photon Emission from Low-luminosity Gamma-Ray Bursts  

Science Journals Connector (OSTI)

Ultra-high-energy cosmic-ray heavy nuclei have recently been considered as originating from nearby low-luminosity gamma-ray bursts that are associated with Type Ibc supernovae. Unlike the power-law decay in long duration gamma-ray bursts, the light curve of these bursts exhibits complex UV/optical behavior: shock breakout dominated thermal radiation peaks at about 1 day, and, after that, nearly constant emission sustained by radioactive materials for tens of days. We show that the highly boosted heavy nuclei at PeV energy interacting with the UV/optical photon field will produce considerable TeV photons via the photodisintegration/photo-de-excitation process. It was later predicted that a thermal-like ?-ray spectrum peaks at about a few TeV, which may serve as evidence of nucleus acceleration. The future observations by the space telescope Fermi and by the ground atmospheric Cherenkov telescopes such as H.E.S.S., VERITAS, and MAGIC will shed light on this prediction.

Xue-Wen Liu; Xue-Feng Wu; Tan Lu

2012-01-01T23:59:59.000Z

256

Advanced Microturbine Systems  

SciTech Connect (OSTI)

Dept. of Energy (DOE) Cooperative Agreement DE-FC02-00-CH11061 was originally awarded to Honeywell International, Inc. ?? Honeywell Power Systems Inc. (HPSI) division located in Albuquerque, NM in October 2000 to conduct a program titled Advanced Microturbine Systems (AMS). The DOE Advanced Microturbines Systems Program was originally proposed as a five-year program to design and develop a high efficiency, low emissions, durable microturbine system. The period of performance was to be October 2000 through September 2005. Program efforts were underway, when one year into the program Honeywell sold the intellectual property of Honeywell Power Systems Inc. and HPSI ceased business operations. Honeywell made an internal decision to restructure the existing program due to the HPSI shutdown and submitted a formal request to DOE on September 24, 2001 to transfer the Cooperative Agreement to Honeywell Engines, Systems and Services (HES&S) in Phoenix, AZ in order to continue to offer support for DOE's Advanced Microturbine Program. Work continued on the descoped program under Cooperative Agreement No. DE-FC26-00-CH11061 and has been completed.

None

2005-12-31T23:59:59.000Z

257

Radio Synchrotron Emission from Secondary Leptons in the Vicinity of Sgr A*  

E-Print Network [OSTI]

A point-like source of ~TeV gamma-rays has recently been seen towards the Galactic center by HESS and other air Cerenkov telescopes. In recent work (Ballantyne et al. 2007), we demonstrated that these gamma-rays can be attributed to high-energy protons that (i) are accelerated close to the event horizon of the central black hole, Sgr A*, (ii) diffuse out to ~pc scales, and (iii) finally interact to produce gamma-rays. The same hadronic collision processes will necessarily lead to the creation of electrons and positrons. Here we calculate the synchrotron emissivity of these secondary leptons in the same magnetic field configuration through which the initiating protons have been propagated in our model. We compare this emission with the observed ~GHz radio spectrum of the inner few pc region which we have assembled from archival data and new measurements we have made with the Australia Telescope Compact Array. We find that our model predicts secondary synchrotron emission with a steep slope consistent with the observations but with an overall normalization that is too large by a factor of ~ 2. If we further constrain our theoretical gamma-ray curve to obey the implicit EGRET upper limit on emission from this region we predict radio emission that is consistent with observations, i.e., the hadronic model of gamma ray emission can, simultaneously and without fine-tuning, also explain essentially all the diffuse radio emission detected from the inner few pc of the Galaxy.

Roland M. Crocker; David Jones; David R. Ballantyne; Fulvio Melia

2007-08-07T23:59:59.000Z

258

Gamma-Ray Observations of the Supernova Remnant RX J0852.0-4622 with the Fermi LAT  

SciTech Connect (OSTI)

We report on gamma-ray observations of the supernova remnant (SNR) RX J0852.0-4622 with the Large Area Telescope (LAT) aboard the Fermi Gamma-ray Space Telescope. In the Fermi LAT data, we find a spatially extended source at the location of the SNR. The extension is consistent with the SNR size seen in other wavelengths such as X-rays and TeV gamma rays, leading to the identification of the gamma-ray source with the SNR. The spectrum is well described as a power law with a photon index of {Lambda} = 1.85 {+-} 0.06 (stat){sub -0.19}{sup +0.18} (sys), which smoothly connects to the H.E.S.S. spectrum in the TeV energy band. We discuss the gamma-ray emission mechanism based on multiwavelength data. The broadband data can be fit well by a model in which the gamma rays are of hadronic origin. We also consider a scenario with inverse Compton scattering of electrons as the emission mechanism of the gamma rays. Although the leptonic model predicts a harder spectrum in the Fermi LAT energy range, the model can fit the data considering the statistical and systematic errors.

Tanaka, T.; Allafort, A.; /Stanford U., HEPL /KIPAC, Menlo Park; Ballet, J.; /Saclay; Funk, S.; /Stanford U., HEPL /KIPAC, Menlo Park; Giordano, F.; /Bari U. /INFN, Bari; Hewitt, J.; /NASA, Goddard; Lemoine-Goumard, M.; /Bordeaux U.; Tajima, H.; /Stanford U., HEPL /KIPAC, Menlo Park /Nagoya U., Solar-terrestrial Environ Lab.; Tibolla, O.; /Wurzburg U.; Uchiyama, Y.; /Stanford U., HEPL /KIPAC, Menlo Park

2011-12-13T23:59:59.000Z

259

Development of a mid-sized Schwarzschild-Couder Telescope for the Cherenkov Telescope Array  

SciTech Connect (OSTI)

The Cherenkov Telescope Array (CTA) is a ground-based observatory for very high-energy (10 GeV to 100 TeV) gamma rays, planned for operation starting in 2018. It will be an array of dozens of optical telescopes, known as Atmospheric Cherenkov Telescopes (ACTs), of 8 m to 24 m diameter, deployed over an area of more than 1 square km, to detect flashes of Cherenkov light from showers initiated in the Earth's atmosphere by gamma rays. CTA will have improved angular resolution, a wider energy range, larger fields of view and an order of magnitude improvement in sensitivity over current ACT arrays such as H.E.S.S., MAGIC and VERITAS. Several institutions have proposed a research and development program to eventually contribute 36 medium-sized telescopes (9 m to 12 m diameter) to CTA to enhance and optimize its science performance. The program aims to construct a prototype of an innovative, Schwarzschild-Couder telescope (SCT) design that will allow much smaller and less expensive cameras and much larger fields of view than conventional Davies-Cotton designs, and will also include design and testing of camera electronics for the necessary advances in performance, reliability and cost. We report on the progress of the mid-sized SCT development program.

Cameron, Robert A.

2012-06-28T23:59:59.000Z

260

The next generation Cherenkov Telescope Array observatory: CTA  

E-Print Network [OSTI]

The Cherenkov Telescope Array (CTA) is a large collaborative effort aimed at the design and operation of an observatory dedicated to the VHE gamma-ray astrophysics in the energy range 30 GeV-100 TeV, which will improve by about one order of magnitude the sensitivity with respect to the current major arrays (H.E.S.S., MAGIC, and VERITAS). In order to achieve such improved performance, for both the northern and southern CTA sites, four units of 23m diameter Large Size Telescopes (LSTs) will be deployed close to the centre of the array with telescopes separated by about 100m. A larger number (about 25 units) of 12m Medium Size Telescopes (MSTs, separated by about 150m), will cover a larger area. The southern site will also include up to 24 Schwarzschild-Couder dual-mirror medium-size Telescopes (SCTs) with the primary mirror diameter of 9.5m. Above a few TeV, the Cherenkov light intensity is such that showers can be detected even well outside the light pool by telescopes significantly smaller than the MSTs. To a...

Vercellone, Stefano

2014-01-01T23:59:59.000Z

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261

Differential and integral enthalpies of solution of akermanite and pseudo-wollastonite in the melts of the system Ca2MgSi2O7?CaSiO3. Isoplethal enthalpies in this system  

Science Journals Connector (OSTI)

It was found that the enthalpy of mixing at formation of the melts in the Ca2MgSi2O7?CaSiO3 system from melts of Ca2MgSi2O7 and CaSiO3 is zero within the temperature limits from 1673 to 1930 K. Consequently, the differential and integral heats of solution of akermanite and pseudo-wollastonite in the melts of this system are equal to their heats of fusion at the corresponding temperature. Using the non-isothermal Hess law and the phase diagram, isoplethal enthalpies were calculated in this system within the temperature range from 298 to 1920 K. The enthalpy and entropy of crystallization for the eutectic melt at the eutectic temperature Te = 1673 K was determined to be ?crystH(eut. melt, Te) = (? 78.3 +- 2.4) J mol?1 and ?crystS(eut. melt, Te) = (?46.8 +- 1.4) J mol?1 K?1, respectively.

I Nerd; K Adamkovic?ov; L Kosa; J Strec?ko; I Proks

1996-01-01T23:59:59.000Z

262

A search for optical counterparts of the complex Vela X system  

E-Print Network [OSTI]

The pulsar wind nebula (PWN) associated with the Vela pulsar is a bright source in the radio, X-ray and gamma-ray bands, but not in the optical. This source is very near, lying at a distance of 290 pc, as inferred from the radio and optical parallax measurements of the pulsar. Knowledge of the brightness and structure of the Vela PWN in optical is important in order to constrain the underlying particle spectrum (and possibly the B-field properties and particle losses) associated with this extended source. We use results from the Digital Sky Survey, as well as results obtained using the SAAO 1.0 m telescope equipped with an imaging CCD (STE4) and BV filters, in an attempt to measure optical radiation from Vela X. To enlarge our field of view, we constructed a mosaic consisting of 3 x 3 frames around the pulsar position. We present spectral measurements from the High Energy Stereoscopic System (H.E.S.S.), Fermi Large Area Telescope (LAT), ASCA, Hubble Space Telescope (HST), Very Large Telescope (VLT), New Techn...

Marubini, T E; Venter, C; de Jager, O C

2015-01-01T23:59:59.000Z

263

On the formation of TeV radiation in LS 5039  

E-Print Network [OSTI]

The recent detections of TeV gamma-rays from compact binary systems show that relativistic outflows (jets or winds) are sites of effective acceleration of particles up to multi-TeV energies. In this paper, we discuss the conditions of acceleration and radiation of ultra-relativistic electrons in LS 5039, the gamma-ray emitting binary system for which the highest quality TeV data are available. Assuming that the gamma-ray emitter is a jet-like structure, we performed detailed numerical calculations of the energy spectrum and lightcurves accounting for the acceleration efficiency, the location of the accelerator, the speed of the emitting flow, the inclination angle of the system, as well as specific features related to anisotropic inverse Compton scattering and pair production. We conclude that the accelerator should not be deep inside the binary system unless we assume a very efficient acceleration rate. We show that within the IC scenario both the gamma-ray spectrum and flux are strongly orbital phase dependent. Formally, our model can reproduce, for specific sets of parameter values, the energy spectrum of gamma-rays reported by HESS for wide orbital phase intervals. However, the physical properties of the source can be constrained only by observations capable of providing detailed energy spectra for narrow orbital phase intervals ($\\Delta\\phi\\ll 0.1$).

Dmitry Khangulyan; Felix Aharonian; Valenti Bosch-Ramon

2007-07-11T23:59:59.000Z

264

The accretion regime of LS 5039: 3-D SPH simulations  

E-Print Network [OSTI]

LS 5039 is a TeV gamma-ray binary with extended radio emission. It consists of a compact object in the mildly eccentric (e=0.35), 3.9-day orbit around a massive O star. The nature of the compact object is not yet established. In this paper, assuming that the compact object is a black hole, we study the accretion of O-star wind by the black hole, by performing three-dimensional Smoothed Particle Hydrodynamics (SPH) simulations. In order to roughly emulate the effect of the stellar radiation effectively canceling the stellar gravity, we assume that the O star's gravity does not exert on the wind. The wind particles are ejected with half the observed terminal velocity in a narrow range of azimuthal and vertical angles toward the black hole, in order to emulate the wind significantly slower than the terminal speed, and optimize the resolution and computational efficiency of simulations. We find that the mass-accretion rate closely follows the classical Bondi-Hoyle-Littleton accretion rate, which is of the order of 10^{16}g/s around periastron. The accretion rate at this level would provide jets enough power to produce the gamma-rays detected by HESS. Since the accretion peak occurs near the periastron passage, we need a strong gamma-ray absorption around periastron in order for the microquasar scenario to be consistent with the observed orbital modulation of the TeV gamma-ray flux.

A. T. Okazaki; G. E. Romero; S. P. Owocki

2008-11-12T23:59:59.000Z

265

Sensitivity of the IceCube neutrino detector to dark matter annihilating in dwarf galaxies  

Science Journals Connector (OSTI)

In this paper, we compare the relative sensitivities of gamma-ray and neutrino observations to the dark matter annihilation cross section in leptophilic models such as have been designed to explain PAMELA data. We investigate whether the high energy neutrino telescope IceCube will be competitive with current and upcoming searches by gamma-ray telescopes, such as the Atmospheric erenkov Telescopes (H.E.S.S., VERITAS, and MAGIC), or the Fermi Gamma-Ray Space Telescope, in detecting or constraining dark matter particles annihilating in dwarf spheroidal galaxies. We find that after 10 years of observation of the most promising nearby dwarfs, IceCube will have sensitivity comparable to the current sensitivity of gamma-ray telescopes only for very heavy (mX?7??TeV) or relatively light (mX?200??GeV) dark matter particles which annihilate primarily to ?+?-. If dark matter particles annihilate primarily to ?+?-, IceCube will have superior sensitivity only for dark matter particle masses below the 200GeV threshold of current Atmospheric erenkov Telescopes. If dark matter annihilations proceed directly to neutrino-antineutrino pairs a substantial fraction of the time, IceCube will be competitive with gamma-ray telescopes for a much wider range of dark matter masses.

Pearl Sandick; Douglas Spolyar; Matthew Buckley; Katherine Freese; Dan Hooper

2010-04-05T23:59:59.000Z

266

Neutrino Astronomy and Cosmic Rays Spectroscopy at Horizons  

E-Print Network [OSTI]

A new air-showering physics may rise in next years at horizon, offering at different angles and altitudes a fine tuned filtered Cosmic Rays astrophysics and an upward Neutrino induced air-showering astronomy. Most of this opportunity arises because of neutrino masses, their mixing and the consequent replenishment of rarest tau flavor during its flight in Space. Horizontal air atmosphere act as a filter for High energy Cosmic Rays (CR) and as a beam dump for Ultra High Energy (UHE) neutrinos and a powerfull amplifier for its tau decay in air by its wide showering areas. Earth sharp shadows plays the role of a huge detector volume for UHE neutrino and a noise-free screen for upcoming EeVs tau air-showers (as well PeVs anti-neutrino electron air interactions). Projects for Tau Airshowers are growing at the top of a mountains or at the edge of a cliff. ASHRA in Hawaii and CRNTN in Utah are tracking fluorescence lights, while other novel projects on Crown array detectors on mountains, on balloons and satellites are elaborated for Cherenkov lights. AUGER, facing the Ande edges, ARGO located within a deep valley are testing inclined showers; MILAGRO (and MILAGRITO) may be triggered by horizontal up-going muon bundles from the Earth edges; HIRES and AUGER UHECR detectors, linking twin array telescopes along their axis may test horizontal Cerenkov blazing photons. MAGIC (Hess, Veritas) and Shalon Telescopes may act already like a detector for few PeVs and Glashow resonance neutrino events; MAGIC pointing downward to terrestrial ground acts as a massive tens of km^3 detector, making it the most sensitive dedicated neutrino telescope. MAGIC facing the sea edges must reveal mirrored downward UHECR Air-showers Cherenkov flashes. Magic-crown systems may lead to tens km^3, neutrino detectors.

D. Fargion

2006-04-20T23:59:59.000Z

267

Study of Nonthermal Emission from SNR RX J1713.73946 with Suzaku  

Science Journals Connector (OSTI)

We present results obtained from a series of observations of the supernova remnant RX J1713.73946 by Suzaku. Hard X-rays have been detected up to ~40 keV. The hard X-ray spectra are described by a power law with photon indices of ~3.0, which is larger than those below 10 keV. The combination of the spatially integrated XIS and HXD spectra clearly reveals a spectral cutoff which is linked to the maximum energy of accelerated electrons. The broadband coverage of Suzaku allows us to derive, for the first time, the energy spectrum of parent electrons in the cutoff region. The cutoff energy in the X-ray spectrum indicates that the electron acceleration in the remnant proceeds close to the Bohm diffusion limit. We discuss the implications of the spectral and morphological properties of the Suzaku data in the context of the origin of nonthermal emission. The Suzaku X-ray and H.E.S.S. gamma-ray data together hardly can be explained within a pure leptonic scenario. Moreover, the leptonic models require a weak magnetic field, which is inconsistent with the recently discovered X-ray filamentary structures and their short-term variability. The hadronic models with strong magnetic fields provide reasonable fits to the observed spectra, but require special arrangements of parameters to explain the lack of thermal X-ray emission. For morphology studies, we compare the X-ray and TeV gamma-ray surface brightness. We confirm the previously reported strong correlation between X-rays and TeV gamma rays. At the same time, the Suzaku data reveal a deviation from the general tendency, namely, the X-ray emission in the western rims appears brighter than expected from the average X-ray to gamma-ray ratio.

Takaaki Tanaka; Yasunobu Uchiyama; Felix A. Aharonian; Tadayuki Takahashi; Aya Bamba; Junko S. Hiraga; Jun Kataoka; Tetsuichi Kishishita; Motohide Kokubun; Koji Mori; Kazuhiro Nakazawa; Robert Petre; Hiroyasu Tajima; Shin Watanabe

2008-01-01T23:59:59.000Z

268

Radio and gamma-ray constraints on dark matter annihilation in the Galactic center  

SciTech Connect (OSTI)

We determine upper limits on the dark matter (DM) self-annihilation cross section for scenarios in which annihilation leads to the production of electron--positron pairs. In the Galactic center, relativistic electrons and positrons produce a radio flux via synchroton emission, and a gamma-ray flux via bremsstrahlung and inverse Compton scattering. On the basis of archival, interferometric and single-dish radio data, we have determined the radio spectrum of an elliptical region around the Galactic center of extent 3 deg. semimajor axis (along the Galactic plane) and 1 deg. semiminor axis and a second, rectangular region, also centered on the Galactic center, of extent 1.6 deg. x 0.6 deg. The radio spectra of both regions are nonthermal over the range of frequencies for which we have data: 74 MHz-10 GHz. We also consider gamma-ray data covering the same region from the EGRET instrument (about GeV) and from HESS (around TeV). We show how the combination of these data can be used to place robust constraints on DM annihilation scenarios, in a way which is relatively insensitive to assumptions about the magnetic field amplitude in this region. Our results are approximately an order of magnitude more constraining than existing Galactic center radio and gamma-ray limits. For a DM mass of m{sub {chi}=}10 GeV, and an Navarro-Frank-White profile, we find <{sigma}{sub A}v>{<=}fewx10{sup -25} cm{sup 3} s{sup -1}.

Crocker, R. M. [School of Physics, University of Melbourne, 3010, Victoria (Australia); School of Physics, Monash University, 3800, Victoria (Australia); Max Planck Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Bell, N. F. [School of Physics, University of Melbourne, 3010, Victoria (Australia); Balazs, C. [School of Physics, Monash University, 3800, Victoria (Australia); Jones, D. I. [Max Planck Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany)

2010-03-15T23:59:59.000Z

269

The role of magnetic reconnection and differential rotation in spheromak formation  

Science Journals Connector (OSTI)

The physical processes involved in the formation of a spheromak are studied. Using one?fluid axisymmetric resistive magnetohydrodynamic equations together with a temperature equation investigations of the essential physics aspects of the formation specifically for the new Maryland Spheromak (MS) [J. Antoniades C. Chin?Fatt A. DeSilva G. Goldenbaum R. Hess and R. Shaw in P r o c e e d i n g s o f t h e S i x t h U. S. S y m p o s i u m o n C o m p a c t T o r u s R e s e a r c h Princeton 1984 (Princeton Plasma Physics Laboratory Princeton NJ 1985) p. 65] have been performed. These studies elucidate the role of differential rotation in accelerating the penetration of toroidal field B ? and in forcing I??r B ? to be a flux function. Another important aspect of the formation is the magnetic reconnection that occurs at the X point between the two reversal coils. A strong toroidal current is generated by the reconnection and the X point is converted into an O point that finally becomes the magnetic axis of the spheromak. In this latter phase of reconnection the plasma is heated very strongly. Studies have also been done on the effect of the difference in phase and time scales for the reversal and I z banks for the purpose of optimization. The effect of radiation from carbon and oxygen is examined and found to have very little effect on the proposed formation scheme. The results are also relatively insensitive to changes in the anomalous electron thermal conduction models used.

P. N. Guzdar; John M. Finn; K. W. Whang; A. Bondeson

1985-01-01T23:59:59.000Z

270

A General Investigation of Optimized Atmospheric Sample Duration  

SciTech Connect (OSTI)

ABSTRACT The International Monitoring System (IMS) consists of up to 80 aerosol and xenon monitoring systems spaced around the world that have collection systems sensitive enough to detect nuclear releases from underground nuclear tests at great distances (CTBT 1996; CTBTO 2011). Although a few of the IMS radionuclide stations are closer together than 1,000 km (such as the stations in Kuwait and Iran), many of them are 2,000 km or more apart. In the absence of a scientific basis for optimizing the duration of atmospheric sampling, historically scientists used a integration times from 24 hours to 14 days for radionuclides (Thomas et al. 1977). This was entirely adequate in the past because the sources of signals were far away and large, meaning that they were smeared over many days by the time they had travelled 10,000 km. The Fukushima event pointed out the unacceptable delay time (72 hours) between the start of sample acquisition and final data being shipped. A scientific basis for selecting a sample duration time is needed. This report considers plume migration of a nondecaying tracer using archived atmospheric data for 2011 in the HYSPLIT (Draxler and Hess 1998; HYSPLIT 2011) transport model. We present two related results: the temporal duration of the majority of the plume as a function of distance and the behavior of the maximum plume concentration as a function of sample collection duration and distance. The modeled plume behavior can then be combined with external information about sampler design to optimize sample durations in a sampling network.

Eslinger, Paul W.; Miley, Harry S.

2012-11-28T23:59:59.000Z

271

High-Energy Neutrinos Produced by Interactions of Relativistic Protons in Shocked Pulsar Winds  

Science Journals Connector (OSTI)

We have estimated fluxes of neutrinos and gamma rays that are generated from the decay of charged and neutral pions from a pulsar surrounded by supernova ejecta in our Galaxy, including an effect that has not been taken into consideration before, that is, the interactions between high-energy cosmic rays themselves in the nebula flow, assuming that hadronic components are the energetically dominant species in the pulsar wind. The bulk flow is assumed to be randomized by passing through the termination shock, and the energy distribution functions of protons and electrons behind the termination shock are assumed to obey relativistic Maxwellians. We have found that fluxes of neutrinos and gamma rays depend very sensitively on the wind luminosity, which is assumed to be comparable to the spin-down luminosity. In the case where B = 1012 G and P = 1 ms, neutrinos should be detected by km3 high-energy neutrino detectors such as AMANDA and IceCube. Also, gamma rays should be detected by Cerenkov telescopes such as CANGAROO and HESS, as well as by gamma-ray satellites such as GLAST. On the other hand, in the case where B = 1012 G and P = 5 ms, fluxes of neutrinos and gamma rays will be too low to be detected even by the next-generation detectors. However, even in the case where B = 1012 G and P = 5 ms, there is a possibility that very high fluxes of neutrinos may be realized at early stages of a supernova explosion (t ? 1 yr), where the location of the termination shock is very near to the pulsar. We have also found that there is a possibility that protons with energies of ~105 GeV in the nebula flow may interact with the photon field from the surface of the pulsar and produce many pions, which would enhance the intensity of the resulting neutrinos and gamma rays.

Shigehiro Nagataki

2004-01-01T23:59:59.000Z

272

Nonthermal emission from clusters of galaxies  

Science Journals Connector (OSTI)

We show that the spectral and radial distribution of the nonthermal emission of massive, M1014.5M?, galaxy clusters may be approximately described by simple analytic expressions, which depend on the cluster thermal X-ray properties and on two model parameter, ?core and ?e. ?core is the ratio of the cosmic-ray (CR) energy density (within a logarithmic CR energy interval) and the thermal energy density at the cluster core, and ?e(p) is the fraction of the thermal energy generated in strong collisionless shocks, which is deposited in CR electrons (protons). Using a simple analytic model for the evolution of intra-cluster medium CRs, which are produced by accretion shocks, we find that ?core ?p/200, nearly independent of cluster mass and with a scatter ?ln ?core 1 between clusters of given mass. We show that the hard X-ray (HXR) and ?-ray luminosities produced by inverse Compton scattering of CMB photons by electrons accelerated in accretion shocks (primary electrons) exceed the luminosities produced by secondary particles (generated in hadronic interactions within the cluster) by factors 500(?e/?p)(T/10keV)?1/2 and 150(?e/?p)(T/10keV)?1/2 respectively, where T is the cluster temperature. Secondary particle emission may dominate at the radio and very high energy (1TeV) ?-ray bands. Our model predicts, in contrast with some earlier work, that the HXR and ?-ray emission from clusters of galaxies are extended, since the emission is dominated at these energies by primary (rather than by secondary) electrons. Our predictions are consistent with the observed nonthermal emission of the Coma cluster for ?p ~ ?e ~ 0.1. The implications of our predictions to future HXR observations (e.g. by NuStar, Simbol-X) and to (space/ground based) ?-ray observations (e.g. by Fermi, HESS, MAGIC, VERITAS) are discussed. In particular, we identify the clusters which are the best candidates for detection in ?-rays. Finally, we show that our model's results agree with results of detailed numerical calculations, and that discrepancies between the results of various numerical simulations (and between such results and our model) are due to inaccuracies in the numerical calculations.

Doron Kushnir; Eli Waxman

2009-01-01T23:59:59.000Z

273

Nonthermal emission from clusters of galaxies  

SciTech Connect (OSTI)

We show that the spectral and radial distribution of the nonthermal emission of massive, M ?> 10{sup 14.5}M{sub ?}, galaxy clusters may be approximately described by simple analytic expressions, which depend on the cluster thermal X-ray properties and on two model parameter, ?{sub core} and ?{sub e}. ?{sub core} is the ratio of the cosmic-ray (CR) energy density (within a logarithmic CR energy interval) and the thermal energy density at the cluster core, and ?{sub e(p)} is the fraction of the thermal energy generated in strong collisionless shocks, which is deposited in CR electrons (protons). Using a simple analytic model for the evolution of intra-cluster medium CRs, which are produced by accretion shocks, we find that ?{sub core} ? ?{sub p}/200, nearly independent of cluster mass and with a scatter ?ln ?{sub core} ? 1 between clusters of given mass. We show that the hard X-ray (HXR) and ?-ray luminosities produced by inverse Compton scattering of CMB photons by electrons accelerated in accretion shocks (primary electrons) exceed the luminosities produced by secondary particles (generated in hadronic interactions within the cluster) by factors ? 500(?{sub e}/?{sub p})(T/10 keV){sup ?1/2} and ? 150(?{sub e}/?{sub p})(T/10 keV){sup ?1/2} respectively, where T is the cluster temperature. Secondary particle emission may dominate at the radio and very high energy (?> 1 TeV) ?-ray bands. Our model predicts, in contrast with some earlier work, that the HXR and ?-ray emission from clusters of galaxies are extended, since the emission is dominated at these energies by primary (rather than by secondary) electrons. Our predictions are consistent with the observed nonthermal emission of the Coma cluster for ?{sub p} ? ?{sub e} ? 0.1. The implications of our predictions to future HXR observations (e.g. by NuStar, Simbol-X) and to (space/ground based) ?-ray observations (e.g. by Fermi, HESS, MAGIC, VERITAS) are discussed. In particular, we identify the clusters which are the best candidates for detection in ?-rays. Finally, we show that our model's results agree with results of detailed numerical calculations, and that discrepancies between the results of various numerical simulations (and between such results and our model) are due to inaccuracies in the numerical calculations.

Kushnir, Doron; Waxman, Eli, E-mail: doron.kushnir@weizmann.ac.il, E-mail: eli.waxman@weizmann.ac.il [Physics Faculty, Weizmann Institute of Science, PO Box 26, Rehovot (Israel)

2009-08-01T23:59:59.000Z

274

INTERACTING COSMIC RAYS WITH MOLECULAR CLOUDS: A BREMSSTRAHLUNG ORIGIN OF DIFFUSE HIGH-ENERGY EMISSION FROM THE INNER 2 Degree-Sign Multiplication-Sign 1 Degree-Sign OF THE GALACTIC CENTER  

SciTech Connect (OSTI)

The high-energy activity in the inner few degrees of the Galactic center is traced by diffuse radio, X-ray, and {gamma}-ray emission. The physical relationship between different components of diffuse gas emitting at multiple wavelengths is a focus of this work. We first present radio continuum observations using the Green Bank Telescope and model the nonthermal spectrum in terms of a broken power-law distribution of {approx}GeV electrons emitting synchrotron radiation. We show that the emission detected by Fermi is primarily due to nonthermal bremsstrahlung produced by the population of synchrotron emitting electrons in the GeV energy range interacting with neutral gas. The extrapolation of the electron population measured from radio data to low and high energies can also explain the origin of Fe I 6.4 keV line and diffuse TeV emission, as observed with Suzaku, XMM-Newton, Chandra, and the H.E.S.S. observatories. The inferred physical quantities from modeling multiwavelength emission in the context of bremsstrahlung emission from the inner {approx}300 Multiplication-Sign 120 pc of the Galactic center are constrained to have the cosmic-ray ionization rate {approx}1-10 Multiplication-Sign 10{sup -15} s{sup -1}, molecular gas heating rate elevating the gas temperature to 75-200 K, fractional ionization of molecular gas 10{sup -6}-10{sup -5}, large-scale magnetic field 10-20 {mu}G, the density of diffuse and dense molecular gas {approx}100 and {approx}10{sup 3} cm{sup -3} over 300 pc and 50 pc path lengths, and the variability of Fe I K{alpha} 6.4 keV line emission on yearly timescales. Important implications of our study are that GeV electrons emitting in radio can explain the GeV {gamma}-rays detected by Fermi and that the cosmic-ray irradiation model, like the model of the X-ray irradiation triggered by past activity of Sgr A*, can also explain the origin of the variable 6.4 keV emission from Galactic center molecular clouds.

Yusef-Zadeh, F.; Roberts, D. A.; Royster, M. [Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208 (United States)] [Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208 (United States); Hewitt, J. W. [Code 662, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)] [Code 662, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Wardle, M. [Department of Physics and Astronomy, and Research Center for Astronomy, Astrophysics and Astrophotonics, Macquarie University, Sydney, NSW 2109 (Australia)] [Department of Physics and Astronomy, and Research Center for Astronomy, Astrophysics and Astrophotonics, Macquarie University, Sydney, NSW 2109 (Australia); Tatischeff, V. [Center de Spectrometrie Nucleaire et de Spectrometrie de Massse, IN2P3/CNRS and Univ. Paris-Sud, F-91405 Orsay Campus (France)] [Center de Spectrometrie Nucleaire et de Spectrometrie de Massse, IN2P3/CNRS and Univ. Paris-Sud, F-91405 Orsay Campus (France); Cotton, W. [NRAO, 520 Edgemont Road, Charlottesville, VA 22903 (United States)] [NRAO, 520 Edgemont Road, Charlottesville, VA 22903 (United States); Uchiyama, H.; Nobukawa, M.; Tsuru, T. G. [Cosmic Ray Group, Physics, Kyoto University, Kitashirakawa-Oiwake-Cho, Sakyo, Kyoto 606-8502 (Japan)] [Cosmic Ray Group, Physics, Kyoto University, Kitashirakawa-Oiwake-Cho, Sakyo, Kyoto 606-8502 (Japan); Heinke, C. [Department of Physics, Room 238 CEB, University of Alberta, Edmonton, AB T6G 2G7 (Canada)] [Department of Physics, Room 238 CEB, University of Alberta, Edmonton, AB T6G 2G7 (Canada)

2013-01-01T23:59:59.000Z

275

Accurate Thermochemical Properties for Energetic Materials Applications. I. Heats of Formation of Nitrogen-Containing Heterocycles and Energetic Precursor Molecules from Electronic Structure Theory  

SciTech Connect (OSTI)

The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. The heats of formation of 1H-imidazole, 1H-1,2,4-trizazole, 1H-tetrazole, CH3NO2, CH3N3, CH3NH2, CH2- CHNO2, HClO4, and phenol, as well as cations and anions derived from some of the molecules have been calculated using ab initio molecular orbital theory. These molecules are important as models for compounds used for energetic materials synthesis. The predicted heats of formation of the heterocycle-based compounds are in excellent agreement with available experimental values and those derived from proton affinities and deprotonation enthalpies to <1 kcal/mol. The predicted value for the tetrazolium cation differs substantially from the experimental value, likely due to uncertainty in the measurement. The heats of formation of the nitro and amino molecules, as well as phenol/phenolate, also are in good agreement with the experimental values (<1.5 kcal/mol). The heat of formation of CH3N3 is predicted to be 72.8 kcal/mol at 298 K with an estimated error bar of (1 kcal/mol on the basis of the agreement between the calculated and experimental values for Hf(HN3). The heat of formation at 298 K of HClO4 is -0.4 kcal/mol, in very good agreement with the experimental value, as well as a W2 literature study. An extrapolation of the CCSD(T)/aug-cc-pV- (Q,5) energies was required to obtain this agreement. This result suggests that very large basis sets (gaugcc- pV5Z) may be needed to fully recover the valence correlation energy contribution in compounds containing elements with high formal oxidation states at the central atom. In addition tight d functions are needed for the geometry predictions. Douglas-Kroll-Hess (DKH) scalar relativistic corrections for HClO4 and ClO4 - at the MP2 level with correlation-consistent DKH basis sets were predicted to be large, likely due to the high formal oxidation state at the Cl.

Gutowski, Keith E.; Rogers, Robin D.; Dixon, David A.

2006-10-26T23:59:59.000Z

276

Spring Chinook Salmon Oncorhynchus tshawytscha Supplementation in the Clearwater Subbasin ; Nez Perce Tribal Hatchery Monitoring and Evaluation Project, 2007 Annual Report.  

SciTech Connect (OSTI)

The Nez Perce Tribal Hatchery (NPTH) program has the following goals (BPA, et al., 1997): (1) Protect, mitigate, and enhance Clearwater Subbasin anadromous fish resources; (2) Develop, reintroduce, and increase natural spawning populations of salmon within the Clearwater Subbasin; (3) Provide long-term harvest opportunities for Tribal and non-Tribal anglers within Nez Perce Treaty lands within four generations (20 years) following project initiation; (4) Sustain long-term fitness and genetic integrity of targeted fish populations; (5) Keep ecological and genetic impacts to non-target populations within acceptable limits; and (6) Promote Nez Perce Tribal management of Nez Perce Tribal Hatchery Facilities and production areas within Nez Perce Treaty lands. The NPTH program was designed to rear and release 1.4 million fall and 625,000 spring Chinook salmon. Construction of the central incubation and rearing facility NPTH and spring Chinook salmon acclimation facilities were completed in 2003 and the first full term NPTH releases occurred in 2004 (Brood Year 03). Monitoring and evaluation plans (Steward, 1996; Hesse and Cramer, 2000) were established to determine whether the Nez Perce Tribal Hatchery program is achieving its stated goals. The monitoring and evaluation action plan identifies the need for annual data collection and annual reporting. In addition, recurring 5-year program reviews will evaluate emerging trends and aid in the determination of the effectiveness of the NPTH program with recommendations to improve the program's implementation. This report covers the Migratory Year (MY) 2007 period of the NPTH Monitoring & Evaluation (M&E) program. There are three NPTH spring Chinook salmon treatment streams: Lolo Creek, Newsome Creek, and Meadow Creek. In 2007, Lolo Creek received 140,284 Brood Year (BY) 2006 acclimated pre-smolts at an average weight of 34.9 grams per fish, Newsome Creek received 77,317 BY 2006 acclimated pre-smolts at an average of 24.9 grams per fish, and Meadow Creek received 53,425 BY 2006 direct stream release parr at an average of 4.7 grams per fish. Natural and hatchery origin spring Chinook salmon pre-smolt emigrants were monitored from September - November 2006 and smolts from March-June 2007. Data on adult returns were collected from May-September. A suite of performance measures were calculated including total adult and spawner escapement, juvenile production, and survival probabilities. These measures were used to evaluate the effectiveness of supplementation and provide information on the capacity of the natural environment to assimilate and support supplemented salmon populations.

Backman, Thomas; Sprague, Sherman; Bretz, Justin [Nez Perce Tribe

2009-06-10T23:59:59.000Z

277

The next generation Cherenkov Telescope Array observatory: CTA  

Science Journals Connector (OSTI)

Abstract The Cherenkov Telescope Array (CTA) is a large collaborative effort aimed at the design and operation of an observatory dedicated to the very high-energy gamma-ray astrophysics in the energy range 30GeV100TeV, which will improve by about one order of magnitude the sensitivity with respect to the current major arrays (H.E.S.S., MAGIC, and VERITAS). In order to achieve such improved performance, for both the northern and southern CTA sites, four units of 23m diameter Large Size Telescopes (LSTs) will be deployed close to the centre of the array with telescopes separated by about 100m. A larger number (about 25 units) of 12m Medium Size Telescopes (MSTs, separated by about 150m), will cover a larger area. The southern site will also include up to 24 SchwarzschildCouder dual-mirror medium-size Telescopes (SCTs) with the primary mirror diameter of 9.5m. Above a few TeV, the Cherenkov light intensity is such that showers can be detected even well outside the light pool by telescopes significantly smaller than the MSTs. To achieve the required sensitivity at high energies, a huge area on the ground needs to be covered by Small Size Telescopes (SSTs) with a field of view of about 10 and an angular resolution of about 0.2, making the dual-mirror configuration very effective. The SST sub-array will be composed of 5070 telescopes with a mirror area of about 510m2 and about 300m spacing, distributed across an area of about 10km2. In this presentation we will focus on the innovative solution for the optical design of the medium and small size telescopes based on a dual-mirror configuration. This layout will allow us to reduce the dimension and the weight of the camera at the focal plane of the telescope, to adopt Silicon-based photo-multipliers as light detectors thanks to the reduced plate-scale, and to have an optimal imaging resolution on a wide field of view.

S. Vercellone

2014-01-01T23:59:59.000Z

278

Cosmic Rays on the Pacific Ocean  

Science Journals Connector (OSTI)

Records of cosmic-ray intensity obtained on the R. M. S. Aorangi during 12 voyages between Vancouver, Canada and Sydney, Australia, from March 17, 1936, to January 18, 1937, using a Carnegie model C cosmic-ray meter, are described and discussed. Typical records exhibiting the latitude effect are shown. A summary of the data taken at sea is given in the form of graphs, in which each datum point represents the average of 6 hours readings with a probable statistical error of 0.13 percent. Any variations due to a possible temperature coefficient of the instrument are negligible. The observed minimum of cosmic-ray intensity near the equator averages 10.3 percent less than the intensity at Vancouver, in satisfactory agreement, considering the difference in expermental conditions, with earlier measurements. The critical latitudes above which changes in intensity are less rapid, are found to be somewhat lower, 38.4N and 34.2S, than previously reported, and beyond these latitudes the intensity is found to continue to increase with latitude. At the higher latitudes is observed a variation, which appears to be seasonal, with the maximum in the cold months in both hemispheres. This variation is closely correlated with the atmospheric temperature. It is hence ascribed to changes in some atmospheric barrier of unknown nature, such as perhaps an atmospheric potential gradient, of whose strength the temperature of the atmosphere is an approximate but not exact index. Changes in this atmospheric barrier have been approximately allowed for by determining the external temperature coefficient and correcting the observations accordingly (this external temperature coefficient is comparable with that reported by Hess and his collaborators). The latitude effect curves as thus corrected should show the effect of the earth's magnetic field alone. They are now nearly flat beyond the critical latitudes and show a magnetic latitude effect of about 7.2 percent. This implies that a latitude effect of about 3.1 percent owes its origin to the atmospheric barrier. Seasonal variations in the corrected latitude effect curve are almost eliminated. Geomagnetic analysis of the energy distribution of the rays indicates a prominent component with a sharp energy threshold of about 7.5109 ev, and a component so weak as to be questionable, whose energy threshold is not greater than 2.5109 ev. It is not found possible to explain the 7.5109 ev threshold in terms of atmospheric absorption as has previously been supposed. Two alternative interpretations are suggested. The difference in cosmic-ray intensity between the northern and southern hemispheres under comparable conditions, as calculated from these data in various ways, appears to be no larger than the probable error of about 0.1 percent. This result is in conflict with the prediction by Compton and Getting of an excess in the north of about 0.5 percent, due to the motion of the earth with the rotation of the galaxy, but is not inconsistent with the small diurnal variation that has been found to follow sidereal time, if it is supposed that the cosmic rays acquire a part of the galactic motion.

A. H. Compton and R. N. Turner

1937-10-15T23:59:59.000Z

279

Remediation of a uranium-contamination in ground water  

SciTech Connect (OSTI)

The former production site of NUKEM where nuclear fuel-elements were developed and handled from 1958 to 1988 was situated in the centre of an industrial park for various activities of the chemical and metallurgical industry. The size of the industrially used part is about 300.000 m{sup 2}. Regulatory routine controls showed elevated CHC (Chlorinated Hydro-Carbons) values of the ground water at the beginning of the 1990's in an area which represented about 80.000 m{sup 2} down-gradient of locations where CHC compounds were stored and handled. Further investigations until 1998 proved that former activities on the NUKEM site, like the UF{sub 6} conversion process, were of certain relevance. The fact that several measured values were above the threshold values made the remediation of the ground water mandatory. This was addressed in the permission given by the Ministry for Nuclear Installations and Environment of Hesse according to chap. 7 of the German atomic law in October 2000. Ground water samples taken in an area of about 5.000 m{sup 2} showed elevated values of total Uranium activity up to between 50 and 75 Bq/l in 2002. Furthermore in an area of another 20.000 m{sup 2} the samples were above threshold value. In this paper results of the remediation are presented. The actual alpha-activities of the ground waters of the remediation wells show values of 3 to 9 Bq/l which are dominated by 80 to 90 % U-234 activity. The mass-share of total Uranium for this nuclide amounts to 0,05% on average. The authority responsible for conventional water utilisation defined target values for remediation: 20 {mu}g/l for dissolved Uranium and 10 {mu}g/l for CHC. Both values have not yet been reached for an area of about 10.000 m{sup 2}. The remediation process by extracting water from four remediation wells has proved its efficiency by reduction of the starting concentrations by a factor of 3 to 6. Further pumping will be necessary especially in that area of the site where the contaminations were found later during soil remediation activities. Only two wells have been in operation since July 2002 when the remediation technique was installed and an apparatus for direct gamma-spectroscopic measurement of the accumulated activities on the adsorbers was qualified. Two further remediation wells have been in operation since August 2006, when the installed remediation technique was about to be doubled from a throughput of 5 m{sup 3}/h to 10 m{sup 3}/h. About 20.000 m{sup 3} of ground water have been extracted since from these two wells and the decrease of their Uranium concentrations behaves similar to that of the two other wells being extracted since the beginning of remediation. Both, total Uranium-concentrations and the weight-share of the nuclides U-234, U-235 and U-238 are measured by ICP-MS (Inductively Coupled Plasma - Mass Spectrometry) besides measurements of Uranium-Alpha-Activities in addition to the measurement of CHC components of which PCE (Per-chlor-Ethene) is dominant in the contaminated area. CHC compounds are measured by GC (Gas Chromatography). Down-gradient naturally attenuated products are detected in various compositions. Overall 183.000 m{sup 3} of ground water have been extracted. Using a pump and treat method 11 kg Uranium have been collected on an ion-exchange material based on cellulose, containing almost 100 MBq U-235 activity, and almost 15 kg of CHC, essentially PCE, were collected on GAC (Granules of Activated Carbon). Less than 3% of the extracted Uranium have passed the adsorber-system of the remediation plant and were adsorbed by the sewage sludge of the industrial site's waste water treatment. The monthly monitoring of 19 monitoring wells shows that an efficient artificial barrier was built up by the water extraction. The Uranium contamination of two ground water plumes has drastically been reduced by the used technique dependent on the amounts of extracted water. The concentration of the CHC contamination has changed depending on the location of temporal pumping. Thereby maximum availability of this contaminan

Woerner, Joerg; Margraf, Sonja; Hackel, Walter [RD Hanau GmbH (Germany)

2007-07-01T23:59:59.000Z

280

DISCLAIMER  

Office of Legacy Management (LM)

PREFACE PREFACE T h i s r e p o r t combines a l l flow and p r e s s u r e b u i l d - u p d a t a c o l l e c t e d on t h e two w e l l s a s s o c i a t e d w i t h P r o j e c t R u l i s o n . A l l s u r f a c e p r e s s u r e s shown t h r o u g h o u t t h i s r e p o r t were measured e i t h e r with a dead weight t e s t e r o r w i t h c o n v e n t i o n a l p r e s s u r e gauges. Bottom h o l e p r e s s u r e s were measured u s i n g an Amerada Type RPG-3 bottom h o l e p r e s s u r e gauge. Flow r a t e s were measured by u s i n g e i t h e r a c o n v e n t i o n a l o r i f i c e f l o w meter o r a c r i t i c a l flow p r o v e r . PROJECT RULISON - WELL TEST DATA TABLE OF CONTENTS Page No. SECTION I - HAYWARD "A" #25-95 (R-E) Pressure Build-up NO. 1 Pressure Drawdown No. 1 Pressure Build-up No. 2 SECTION I 1 - HAYWARD #25-95 (R-EX) Calibration Flow Period Flow Test No. 1 Pressure Build-up NO. 1 Flow Test No. 2 Pressure Build-up NO. 2