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GRB110721A: An extreme peak energy and signatures of the photosphere

dc.contributor.authorAXELSSON, Magnus
dc.contributor.authorBALDINI, Luca
dc.contributor.authorBARBIELLINI, Guido
dc.contributor.authorG. BARING, M.
dc.contributor.authorBELLAZZINI, R.
dc.contributor.authorBREGEON, J.
dc.contributor.authorBRIGIDA, M.
hal.structure.identifierLaboratoire Leprince-Ringuet [LLR]
dc.contributor.authorBRUEL, Pascal
dc.contributor.authorBUEHLER, R.
dc.contributor.authorA. CALIANDRO, G.
dc.contributor.authorA. CAMERON, R.
dc.contributor.authorCARAVEO, P. A.
dc.contributor.authorCECCHI, C.
hal.structure.identifierMax-Planck-Institut für Kernphysik [MPIK]
dc.contributor.authorCHAVES, R.C.G.
dc.contributor.authorCHEKHTMAN, A.
dc.contributor.authorCHIANG, J.
dc.contributor.authorCLAUS, R.
dc.contributor.authorCONRAD, J.
dc.contributor.authorCUTINI, S.
dc.contributor.authorD'AMMANDO, F.
dc.contributor.authorDE PALMA, F.
dc.contributor.authorD. DERMER, C.
dc.contributor.authorDO COUTO E SILVA, E.
dc.contributor.authorS. DRELL, P.
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.authorFUKAZAWA, Y.
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.authorGIROLETTI, M.
dc.contributor.authorGODFREY, G.
dc.contributor.authorGUIRIEC, S.
dc.contributor.authorHADASCH, D.
dc.contributor.authorHANABATA, Y.
dc.contributor.authorHAYASHIDA, M.
hal.structure.identifierGLAST
dc.contributor.authorHOU, X.
dc.contributor.authorIYYANI, S.
dc.contributor.authorS. JACKSON, M.
dc.contributor.authorKOCEVSKI, D.
dc.contributor.authorKUSS, M.
dc.contributor.authorLARSSON, J.
dc.contributor.authorLARSSON, S.
dc.contributor.authorLONGO, F.
dc.contributor.authorLOPARCO, F.
dc.contributor.authorLUNDMAN, C.
dc.contributor.authorN. MAZZIOTTA, M.
dc.contributor.authorE. MCENERY, J.
dc.contributor.authorMIZUNO, T.
dc.contributor.authorE. MONZANI, M.
dc.contributor.authorMORETTI, E.
dc.contributor.authorMORSELLI, A.
dc.contributor.authorMURGIA, S.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorNUSS, E.
dc.contributor.authorNYMARK, T.
dc.contributor.authorOHNO, M.
dc.contributor.authorOMODEI, N.
dc.contributor.authorPESCE-ROLLINS, M.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorPIRON, F.
dc.contributor.authorPIVATO, G.
dc.contributor.authorL. RACUSIN, J.
dc.contributor.authorRAIN'O, S.
dc.contributor.authorRAZZANO, M.
dc.contributor.authorRAZZAQUE, S.
dc.contributor.authorREIMER, A.
dc.contributor.authorROTH, M.
dc.contributor.authorRYDE, F.
dc.contributor.authorSANCHEZ, D.A.
dc.contributor.authorSGR'O, C.
dc.contributor.authorJ. SISKIND, E.
dc.contributor.authorSPANDRE, G.
dc.contributor.authorSPINELLI, P.
dc.contributor.authorSTAMATIKOS, M.
dc.contributor.authorTIBALDO, L.
dc.contributor.authorTINIVELLA, M.
dc.contributor.authorL. USHER, T.
dc.contributor.authorVANDENBROUCKE, J.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorVASILEIOU, V.
dc.contributor.authorVIANELLO, G.
dc.contributor.authorVITALE, V.
dc.contributor.authorP. WAITE, A.
dc.contributor.authorL. WINER, B.
dc.contributor.authorS. WOOD, K.
dc.contributor.authorM. BURGESS, J.
dc.contributor.authorN. BHAT, P.
dc.contributor.authorBISSALDI, E.
dc.contributor.authorS. BRIGGS, M.
dc.contributor.authorCONNAUGHTON, V.
dc.contributor.authorFISHMAN, G.
dc.contributor.authorFITZPATRICK, G.
dc.contributor.authorFOLEY, S.
dc.contributor.authorGRUBER, D.
dc.contributor.authorM. KIPPEN, R.
dc.contributor.authorKOUVELIOTOU, C.
dc.contributor.authorJENKE, P.
dc.contributor.authorMCBREEN, S.
dc.contributor.authorMCGLYNN, S.
dc.contributor.authorMEEGAN, C.
dc.contributor.authorS. PACISAS, W.
hal.structure.identifierLaboratoire Univers et Particules de Montpellier [LUPM]
dc.contributor.authorPELASSA, V.
dc.contributor.authorPREECE, R.
dc.contributor.authorTIERNEY, D.
dc.contributor.authorVON KIENLIN, A.
dc.contributor.authorWILSON-HODGE, C.
dc.contributor.authorXIONG, S.
dc.contributor.authorPE'ER, A.
dc.date.issued2012
dc.identifier.issn2041-8205
dc.description.abstractEnGRB110721A was observed by the Fermi Gamma-ray Space Telescope using its two instruments the Large Area Telescope (LAT) and the Gamma-ray Burst Monitor (GBM). The burst consisted of one major emission episode which lasted for ~24.5 seconds (in the GBM) and had a peak flux of 5.7\pm0.2 x 10^{-5} erg/s/cm^2. The time-resolved emission spectrum is best modeled with a combination of a Band function and a blackbody spectrum. The peak energy of the Band component was initially 15\pm2 MeV, which is the highest value ever detected in a GRB. This measurement was made possible by combining GBM/BGO data with LAT Low Energy Events to achieve continuous 10--100 MeV coverage. The peak energy later decreased as a power law in time with an index of -1.89\pm0.10. The temperature of the blackbody component also decreased, starting from ~80 keV, and the decay showed a significant break after ~2 seconds. The spectrum provides strong constraints on the standard synchrotron model, indicating that alternative mechanisms may give rise to the emission at these energies.
dc.language.isoen
dc.publisherBristol : IOP Publishing
dc.title.enGRB110721A: An extreme peak energy and signatures of the photosphere
dc.typeArticle de revue
dc.identifier.doi10.1088/2041-8205/757/2/L31
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.identifier.arxiv1207.6109
bordeaux.journalThe Astrophysical journal letters
bordeaux.pageL31
bordeaux.volume757
bordeaux.peerReviewedoui
hal.identifierin2p3-00743070
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00743070v1
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