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Detection of a spectral break in the extra hard component of GRB 090926A

dc.contributor.authorACKERMANN, Markus
dc.contributor.authorAJELLO, Marco
dc.contributor.authorASANO, K.
dc.contributor.authorAXELSSON, Magnus
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.authorG. BARING, M.
dc.contributor.authorBASTIERI, D.
dc.contributor.authorBECHTOL, K.
dc.contributor.authorBELLAZZINI, R.
dc.contributor.authorBERENJI, B.
dc.contributor.authorN. BHAT, P.
dc.contributor.authorBISSALDI, E.
dc.contributor.authorD. BLANDFORD, R.
dc.contributor.authorBONAMENTE, E.
dc.contributor.authorW. BORGLAND, A.
dc.contributor.authorBOUVIER, A.
dc.contributor.authorBREGEON, J.
dc.contributor.authorBREZ, A.
dc.contributor.authorS. BRIGGS, M.
dc.contributor.authorBRIGIDA, M.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorBRUEL, Pascal
dc.contributor.authorBUEHLER, R.
dc.contributor.authorBUSON, S.
dc.contributor.authorA. CALIANDRO, G.
dc.contributor.authorA. CAMERON, R.
dc.contributor.authorCARAVEO, P. A.
dc.contributor.authorCARRIGAN, S.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorM. CASANDJIAN, J.
dc.contributor.authorCECCHI, C.
dc.contributor.authorÇELIK, Ö.
dc.contributor.authorCHAPLIN, V.
dc.contributor.authorCHARLES, E.
dc.contributor.authorCHEKHTMAN, A.
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.authorCONNAUGHTON, V.
dc.contributor.authorCONRAD, J.
dc.contributor.authorCUTINI, S.
dc.contributor.authorD. DERMER, C.
dc.contributor.authorDE ANGELIS, A.
dc.contributor.authorDE PALMA, F.
dc.contributor.authorL. DINGUS, B.
dc.contributor.authorDO COUTO E SILVA, E.
dc.contributor.authorS. DRELL, P.
dc.contributor.authorDUBOIS, R.
dc.contributor.authorFAVUZZI, C.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorJ. FEGAN, S.
dc.contributor.authorC. FERRARA, E.
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.authorGASPARRINI, D.
dc.contributor.authorGEHRELS, N.
dc.contributor.authorGERMANI, S.
dc.contributor.authorGIGLIETTO, N.
dc.contributor.authorGIORDANO, F.
dc.contributor.authorGIROLETTI, M.
dc.contributor.authorGLANZMAN, T.
dc.contributor.authorGODFREY, G.
dc.contributor.authorGOLDSTEIN, A.
dc.contributor.authorGRANOT, J.
dc.contributor.authorGREINER, J.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorA. GRENIER, I.
dc.contributor.authorE. GROVE, J.
dc.contributor.authorGUIRIEC, S.
dc.contributor.authorHADASCH, D.
dc.contributor.authorHANABATA, Y.
dc.contributor.authorK. HARDING, A.
dc.contributor.authorHAYASHI, K.
dc.contributor.authorHAYASHIDA, M.
dc.contributor.authorHAYS, E.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorHORAN, D.
dc.contributor.authorE. HUGHES, R.
dc.contributor.authorITOH, R.
dc.contributor.authorJÓHANNESSON, G.
dc.contributor.authorS. JOHNSON, A.
dc.contributor.authorN. JOHNSON, W.
dc.contributor.authorKAMAE, T.
dc.contributor.authorKATAGIRI, H.
dc.contributor.authorKATAOKA, J.
dc.contributor.authorM. KIPPEN, R.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorKNÖDLSEDER, Jürgen
dc.contributor.authorKOCEVSKI, D.
dc.contributor.authorKOUVELIOTOU, C.
dc.contributor.authorKUSS, M.
dc.contributor.authorLANDE, J.
dc.contributor.authorLATRONICO, L.
dc.contributor.authorLEE, S.-H.
dc.contributor.authorLLENA GARDE, M.
dc.contributor.authorLONGO, F.
dc.contributor.authorLOPARCO, F.
dc.contributor.authorN. LOVELLETTE, M.
dc.contributor.authorLUBRANO, P.
dc.contributor.authorMAKEEV, A.
dc.contributor.authorN. MAZZIOTTA, M.
dc.contributor.authorMCBREEN, S.
dc.contributor.authorE. MCENERY, J.
dc.contributor.authorMCGLYNN, S.
dc.contributor.authorMEEGAN, C.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorMEHAULT, J.
dc.contributor.authorMÉSZÁROS, P.
dc.contributor.authorF. MICHELSON, P.
dc.contributor.authorMIZUNO, T.
dc.contributor.authorMONTE, C.
dc.contributor.authorE. MONZANI, M.
dc.contributor.authorMORETTI, E.
dc.contributor.authorMORSELLI, A.
dc.contributor.authorV. MOSKALENKO, I.
dc.contributor.authorMURGIA, S.
dc.contributor.authorNAKAJIMA, H.
dc.contributor.authorNAKAMORI, T.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorNAUMANN-GODO, M.
dc.contributor.authorNISHINO, S.
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.authorOHNO, M.
dc.contributor.authorOHSUGI, T.
dc.contributor.authorOKUMURA, A.
dc.contributor.authorOMODEI, N.
dc.contributor.authorORLANDO, E.
dc.contributor.authorF. ORMES, J.
dc.contributor.authorOZAKI, M.
dc.contributor.authorS. PACIESAS, W.
dc.contributor.authorPANEQUE, D.
dc.contributor.authorH. PANETTA, J.
dc.contributor.authorPARENT, D.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorPELASSA, V.
dc.contributor.authorPEPE, M.
dc.contributor.authorPESCE-ROLLINS, M.
dc.contributor.authorPETROSIAN, V.
hal.structure.identifierLaboratoire de Physique Théorique et Astroparticules [LPTA]
dc.contributor.authorPIRON, F.
dc.contributor.authorPORTER, T.A.
dc.contributor.authorPREECE, R.
dc.contributor.authorL. RACUSIN, J.
dc.contributor.authorRAINÒ, S.
dc.contributor.authorRANDO, R.
dc.contributor.authorRAU, A.
dc.contributor.authorRAZZANO, M.
dc.contributor.authorRAZZAQUE, S.
dc.contributor.authorREIMER, A.
dc.contributor.authorREIMER, O.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorREPOSEUR, T.
dc.contributor.authorC. REYES, L.
dc.contributor.authorRIPKEN, J.
dc.contributor.authorRITZ, S.
dc.contributor.authorROTH, M.
dc.contributor.authorRYDE, F.
dc.contributor.authorF.-W. SADROZINSKI, H.
dc.contributor.authorSANDER, A.
dc.contributor.authorD. SCARGLE, J.
dc.contributor.authorL. SCHALK, T.
dc.contributor.authorSGRÒ, C.
dc.contributor.authorJ. SISKIND, E.
dc.contributor.authorD. SMITH, P.
dc.contributor.authorSPANDRE, G.
dc.contributor.authorSPINELLI, P.
dc.contributor.authorSTAMATIKOS, M.
dc.contributor.authorW. STECKER, F.
dc.contributor.authorS. STRICKMAN, M.
dc.contributor.authorJ. SUSON, D.
dc.contributor.authorTAJIMA, H.
dc.contributor.authorTAKAHASHI, H.
dc.contributor.authorTANAKA, T.
dc.contributor.authorTANAKA, Y.
dc.contributor.authorB. THAYER, J.
dc.contributor.authorG. THAYER, J.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorTIBALDO, L.
dc.contributor.authorTIERNEY, D.
dc.contributor.authorTOMA, K.
dc.contributor.authorF. TORRES, D.
dc.contributor.authorTOSTI, G.
dc.contributor.authorTRAMACERE, A.
dc.contributor.authorUCHIYAMA, Y.
dc.contributor.authorUEHARA, T.
dc.contributor.authorL. USHER, T.
dc.contributor.authorVANDENBROUCKE, J.
dc.contributor.authorJ. VAN DER HORST, A.
dc.contributor.authorVASILEIOU, V.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorVILCHEZ, N.
dc.contributor.authorVITALE, V.
dc.contributor.authorVON KIENLIN, A.
dc.contributor.authorP. WAITE, A.
dc.contributor.authorWANG, P.
dc.contributor.authorWILSON-HODGE, C.
dc.contributor.authorL. WINER, B.
dc.contributor.authorS. WOOD, K.
dc.contributor.authorF. WU, X.
dc.contributor.authorYAMAZAKI, R.
dc.contributor.authorYANG, Z.
dc.contributor.authorYLINEN, T.
dc.contributor.authorZIEGLER, M.
dc.date.issued2011-03-10
dc.identifier.issn0004-637X
dc.description.abstractEnWe report on the observation of the bright, long gamma-ray burst, GRB 090926A, by the Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) instruments on board the \Fermi\ Gamma-ray Space Telescope. GRB 090926A shares several features with other bright LAT bursts. In particular, it clearly shows a short spike in the light curve that is present in all detectors that see the burst, and this in turn suggests that there is a common region of emission across the entire \Fermi\ energy range. In addition, while a separate high-energy power-law component has already been observed in other GRBs, here we report for the first time the detection with good significance of a high-energy spectral break (or cutoff) in this power-law component around 1.4 GeV in the time-integrated spectrum. If the spectral break is caused by opacity to electron-positron pair production within the source, then this observation allows us to compute the bulk Lorentz factor for the outflow, rather than a lower limit.
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.subject.engamma-ray burst: individual (GRB 090926A)
dc.title.enDetection of a spectral break in the extra hard component of GRB 090926A
dc.typeArticle de revue
dc.identifier.doi10.1088/0004-637X/729/2/114
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.identifier.arxiv1101.2082
bordeaux.journalThe Astrophysical Journal
bordeaux.page114
bordeaux.volume729
bordeaux.peerReviewedoui
hal.identifierin2p3-00587734
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00587734v1
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