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Fermi Discovery of Gamma-Ray Emission from NGC 1275

dc.contributor.authorA. ABDO, A.
dc.contributor.authorACKERMANN, Markus
dc.contributor.authorAJELLO, Marco
dc.contributor.authorASANO, K.
dc.contributor.authorBALDINI, Luca
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorBALLET, Jean
dc.contributor.authorBARBIELLINI, Guido
dc.contributor.authorBASTIERI, D.
dc.contributor.authorM. BAUGHMAN, B.
dc.contributor.authorBECHTOL, K.
dc.contributor.authorBELLAZZINI, R.
dc.contributor.authorD. BLANDFORD, R.
dc.contributor.authorD. BLOOM, E.
dc.contributor.authorBONAMENTE, E.
dc.contributor.authorW. BORGLAND, A.
dc.contributor.authorBREGEON, J.
dc.contributor.authorBREZ, A.
dc.contributor.authorBRIGIDA, M.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorBRUEL, Pascal
dc.contributor.authorH. BURNETT, T.
dc.contributor.authorA. CALIANDRO, G.
dc.contributor.authorA. CAMERON, R.
dc.contributor.authorCARAVEO, P. A.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorM. CASANDJIAN, J.
dc.contributor.authorCAVAZZUTI, E.
dc.contributor.authorCECCHI, C.
dc.contributor.authorCELOTTI, A.
dc.contributor.authorCHEKHTMAN, A.
dc.contributor.authorC. CHEUNG, C.
dc.contributor.authorCHIANG, J.
dc.contributor.authorCIPRINI, S.
dc.contributor.authorCLAUS, R.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorCOHEN-TANUGI, J.
dc.contributor.authorCOLAFRANCESCO, S.
dc.contributor.authorR. COMINSKY, L.
dc.contributor.authorCONRAD, J.
dc.contributor.authorCOSTAMANTE, L.
dc.contributor.authorD. DERMER, C.
dc.contributor.authorDE ANGELIS, A.
dc.contributor.authorDE PALMA, F.
dc.contributor.authorW. DIGEL, S.
dc.contributor.authorDONATO, D.
dc.contributor.authorDO COUTO E SILVA, E.
dc.contributor.authorS. DRELL, P.
dc.contributor.authorDUBOIS, R.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorDUMORA, D.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorFARNIER, C.
dc.contributor.authorFAVUZZI, C.
dc.contributor.authorFINKE, J.
dc.contributor.authorB. FOCKE, W.
dc.contributor.authorFRAILIS, M.
dc.contributor.authorFUKAZAWA, Y.
dc.contributor.authorFUNK, S.
dc.contributor.authorFUSCO, P.
dc.contributor.authorGARGANO, F.
dc.contributor.authorGEORGANOPOULOS, M.
dc.contributor.authorGERMANI, S.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorGIEBELS, B.
dc.contributor.authorGIGLIETTO, N.
dc.contributor.authorGIORDANO, F.
dc.contributor.authorGLANZMAN, T.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorA. GRENIER, I.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGRONDIN, M.-H.
dc.contributor.authorE. GROVE, J.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorGUILLEMOT, L.
dc.contributor.authorGUIRIEC, S.
dc.contributor.authorHANABATA, Y.
dc.contributor.authorK. HARDING, A.
dc.contributor.authorC. HARTMAN, R.
dc.contributor.authorHAYASHIDA, M.
dc.contributor.authorHAYS, E.
dc.contributor.authorE. HUGHES, R.
dc.contributor.authorJ'OHANNESSON, G.
dc.contributor.authorS. JOHNSON, A.
dc.contributor.authorP. JOHNSON, R.
dc.contributor.authorN. JOHNSON, W.
dc.contributor.authorKADLER, M.
dc.contributor.authorKAMAE, T.
dc.contributor.authorKANAI, Y.
dc.contributor.authorKATAGIRI, H.
dc.contributor.authorKATAOKA, J.
dc.contributor.authorKAWAI, N.
dc.contributor.authorKERR, M.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorKNÖDLSEDER, Jürgen
dc.contributor.authorKUEHN, F.
dc.contributor.authorKUSS, M.
dc.contributor.authorLATRONICO, L.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorLEMOINE-GOUMARD, M.
dc.contributor.authorLONGO, F.
dc.contributor.authorLOPARCO, F.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorLOTT, B.
dc.contributor.authorN. LOVELLETTE, M.
dc.contributor.authorLUBRANO, P.
dc.contributor.authorM. MADEJSKI, G.
dc.contributor.authorMAKEEV, A.
dc.contributor.authorN. MAZZIOTTA, M.
dc.contributor.authorE. MCENERY, J.
dc.contributor.authorMEURER, C.
dc.contributor.authorF. MICHELSON, P.
dc.contributor.authorMITTHUMSIRI, W.
dc.contributor.authorMIZUNO, T.
dc.contributor.authorA. MOISEEV, A.
dc.contributor.authorMONTE, C.
dc.contributor.authorE. MONZANI, M.
dc.contributor.authorMORSELLI, A.
dc.contributor.authorV. MOSKALENKO, I.
dc.contributor.authorMURGIA, S.
dc.contributor.authorNAKAMORI, T.
dc.contributor.authorL. NOLAN, P.
dc.contributor.authorP. NORRIS, J.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorNUSS, E.
dc.contributor.authorOHSUGI, T.
dc.contributor.authorOMODEI, N.
dc.contributor.authorORLANDO, E.
dc.contributor.authorF. ORMES, J.
dc.contributor.authorPANEQUE, D.
dc.contributor.authorH. PANETTA, J.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorPARENT, D.
dc.contributor.authorPEPE, M.
dc.contributor.authorPESCE-ROLLINS, M.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorPIRON, F.
dc.contributor.authorPORTER, T.A.
dc.contributor.authorRAIN'O, S.
dc.contributor.authorRAZZANO, M.
dc.contributor.authorREIMER, A.
dc.contributor.authorREIMER, O.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorREPOSEUR, T.
dc.contributor.authorRITZ, S.
dc.contributor.authorY. RODRIGUEZ, A.
dc.contributor.authorW. ROMANI, R.
dc.contributor.authorRYDE, F.
dc.contributor.authorF.-W. SADROZINSKI, H.
dc.contributor.authorSAMBRUNA, R.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorSANCHEZ, D.
dc.contributor.authorSANDER, A.
dc.contributor.authorSATO, R.
dc.contributor.authorM. SAZ PARKINSON, P.
dc.contributor.authorSGR'O, C.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorSMITH, David Stanley
dc.contributor.authorD. SMITH, P.
dc.contributor.authorSPANDRE, G.
dc.contributor.authorSPINELLI, P.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorSTARCK, Jean-Luc
dc.contributor.authorS. STRICKMAN, M.
dc.contributor.authorW. STRONG, A.
dc.contributor.authorJ. SUSON, D.
dc.contributor.authorTAJIMA, H.
dc.contributor.authorTAKAHASHI, H.
dc.contributor.authorTAKAHASHI, T.
dc.contributor.authorTANAKA, T.
dc.contributor.authorB. TAYLOR, G.
dc.contributor.authorG. THAYER, J.
dc.contributor.authorJ. THOMPSON, D.
dc.contributor.authorF. TORRES, D.
dc.contributor.authorTOSTI, G.
dc.contributor.authorUCHIYAMA, Y.
dc.contributor.authorL. USHER, T.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorVILCHEZ, N.
dc.contributor.authorVITALE, V.
dc.contributor.authorP. WAITE, A.
dc.contributor.authorS. WOOD, K.
dc.contributor.authorYLINEN, T.
dc.contributor.authorZIEGLER, M.
dc.contributor.authorD. ALLER, H.
dc.contributor.authorF. ALLER, M.
dc.contributor.authorI. KELLERMANN, K.
dc.contributor.authorKOVALEV, Y.Y.
dc.contributor.authorA. KOVAL, Yu.
dc.date.issued2009
dc.identifier.issn2041-8205
dc.description.abstractEnWe report the discovery of high-energy (E>100 MeV) gamma-ray emission from NGC 1275, a giant elliptical galaxy lying at the center of the Perseus cluster of galaxies, based on observations made with the Large Area Telescope (LAT) of the Fermi Gamma ray Space Telescope. The positional center of the gamma-ray source is only ~3' away from the NGC 1275 nucleus, well within the 95% LAT error circle of ~5'.The spatial distribution of gamma-ray photons is consistent with a point source. The average flux and power-law photon index measured with the LAT from 2008 August 4 to 2008 December 5 are F_gamma = (2.10+-0.23)x 10^{-7} ph (>100 MeV) cm^{-2} s^{-1} and Gamma = 2.17+-0.05, respectively. The measurements are statistically consistent with constant flux during the four-month LAT observing period. Previous EGRET observations gave an upper limit of F_gamma < 3.72x 10 ^{-8} ph (>100 MeV) cm^{-2} s^{-1} to the gamma-ray flux from NGC 1275. This indicates that the source is variable on timescales of years to decades, and therefore restricts the fraction of emission that can be produced in extended regions of the galaxy cluster. Contemporaneous and historical radio observations are also reported. The broadband spectrum of NGC 1275 is modeled with a simple one-zone synchrotron/synchrotron self-Compton model and a model with a decelerating jet flow.
dc.language.isoen
dc.publisherBristol : IOP Publishing
dc.title.enFermi Discovery of Gamma-Ray Emission from NGC 1275
dc.typeArticle de revue
dc.identifier.doi10.1088/0004-637X/699/1/31
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE]
dc.identifier.arxiv0904.1904
bordeaux.journalThe Astrophysical journal letters
bordeaux.page31-39
bordeaux.volume699
bordeaux.peerReviewedoui
hal.identifierin2p3-00378198
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00378198v1
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