GRB110721A: An Extreme Peak Energy and Signatures of the Photosphere

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dc.citation.firstpageL31en_US
dc.citation.journalTitleThe Astrophysical Journal Lettersen_US
dc.citation.volumeNumber757en_US
dc.contributor.authorBaring, M.G.en_US
dc.contributor.authorAxelsson, M.en_US
dc.contributor.authorBaldini, L.en_US
dc.contributor.authorBarbiellini, G.en_US
dc.contributor.authorBellazzini, R.en_US
dc.contributor.authorBregeon, J.en_US
dc.contributor.authorBrigida, M.en_US
dc.contributor.authorBruel, P.en_US
dc.contributor.authorBuehler, R.en_US
dc.contributor.authorCaliandro, G.A.en_US
dc.contributor.authorCameron, R.A.en_US
dc.contributor.authorCaraveo, P.A.en_US
dc.contributor.authorCecchi, C.en_US
dc.contributor.authorChaves, R.C.G.en_US
dc.contributor.authorChekhtman, A.en_US
dc.contributor.authorChiang, J.en_US
dc.contributor.authorClaus, R.en_US
dc.contributor.authorConrad, J.en_US
dc.contributor.authorCutini, S.en_US
dc.contributor.authorD'Ammando, F.en_US
dc.contributor.authorde Palma, F.en_US
dc.contributor.authorDermer, C.D.en_US
dc.contributor.authordo Couto e Silva, E.en_US
dc.contributor.authorDrell, P.S.en_US
dc.contributor.authorFavuzzi, C.en_US
dc.contributor.authorFegan, S.J.en_US
dc.contributor.authorFerrara, E.C.en_US
dc.contributor.authorFocke, W.B.en_US
dc.contributor.authorFukazawa, Y.en_US
dc.contributor.authorFusco, P.en_US
dc.contributor.authorGargano, F.en_US
dc.contributor.authorGasparrini, D.en_US
dc.contributor.authorGehrels, N.en_US
dc.contributor.authorGermani, S.en_US
dc.contributor.authorGiglietto, N.en_US
dc.contributor.authorGiroletti, M.en_US
dc.contributor.authorGodfrey, G.en_US
dc.contributor.authorGuiriec, S.en_US
dc.contributor.authorHadasch, D.en_US
dc.contributor.authorHanabata, Y.en_US
dc.contributor.authorHayashida, M.en_US
dc.contributor.authorHou, X.en_US
dc.contributor.authorIyyani, S.en_US
dc.contributor.authorJackson, M.S.en_US
dc.contributor.authorKocevski, D.en_US
dc.contributor.authorKuss, M.en_US
dc.contributor.authorLarsson, J.en_US
dc.contributor.authorLongo, F.en_US
dc.contributor.authorLoparco, F.en_US
dc.contributor.authorLundman, C.en_US
dc.contributor.authorMazziotta, M.N.en_US
dc.contributor.authorMcEnery, J.E.en_US
dc.contributor.authorMizuno, T.en_US
dc.contributor.authorMonzani, M.E.en_US
dc.contributor.authorMoretti, E.en_US
dc.contributor.authorMorselli, A.en_US
dc.contributor.authorMurgia, S.en_US
dc.contributor.authorNuss, E.en_US
dc.contributor.authorNymark, T.en_US
dc.contributor.authorOhno, M.en_US
dc.contributor.authorOmodei, N.en_US
dc.contributor.authorPesce-Rollins, M.en_US
dc.contributor.authorPiron, F.en_US
dc.contributor.authorPivato, G.en_US
dc.contributor.authorRacusin, J.L.en_US
dc.contributor.authorRainò, S.en_US
dc.contributor.authorRazzano, M.en_US
dc.contributor.authorRazzaque, S.en_US
dc.contributor.authorReimer, A.en_US
dc.contributor.authorRoth, M.en_US
dc.contributor.authorRyde, F.en_US
dc.contributor.authorSanchez, D.A.en_US
dc.contributor.authorSgrò, C.en_US
dc.contributor.authorSiskind, E.J.en_US
dc.contributor.authorSpandre, G.en_US
dc.contributor.authorSpinelli, P.en_US
dc.contributor.authorStamatikos, M.en_US
dc.contributor.authorTibaldo, L.en_US
dc.contributor.authorTinivella, M.en_US
dc.contributor.authorUsher, T.L.en_US
dc.contributor.authorVandenbroucke, J.en_US
dc.contributor.authorVasileiou, V.en_US
dc.contributor.authorVianello, G.en_US
dc.contributor.authorVitale, V.en_US
dc.contributor.authorWaite, A.P.en_US
dc.contributor.authorWiner, B.L.en_US
dc.contributor.authorWood, K.S.en_US
dc.contributor.authorBurgess, J.M.en_US
dc.contributor.authorBhat, P.N.en_US
dc.contributor.authorBissaldi, E.en_US
dc.contributor.authorBriggs, M.S.en_US
dc.contributor.authorConnaughton, V.en_US
dc.contributor.authorFishman, G.en_US
dc.contributor.authorFitzpatrick, G.en_US
dc.contributor.authorFoley, S.en_US
dc.contributor.authorGruber, D.en_US
dc.contributor.authorKippen, R.M.en_US
dc.contributor.authorKouveliotou, C.en_US
dc.contributor.authorJenke, P.en_US
dc.contributor.authorMcBreen, S.en_US
dc.contributor.authorMcGlynn, S.en_US
dc.contributor.authorMeegan, C.en_US
dc.contributor.authorPaciesas, W.S.en_US
dc.contributor.authorPelassa, V.en_US
dc.contributor.authorPreece, R.en_US
dc.contributor.authorTierney, D.en_US
dc.contributor.authorvon Kienlin, A.en_US
dc.contributor.authorWilson-Hodge, C.en_US
dc.contributor.authorXiong, S.en_US
dc.contributor.authorPe'er, A.en_US
dc.contributor.authorPe'er, A.en_US
dc.date.accessioned2013-03-14T14:45:23Zen_US
dc.date.available2014-03-19T05:10:03Zen_US
dc.date.issued2012en_US
dc.description.abstractGRB110721A 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 s (in the GBM) and had a peak flux of (5.7 ± 0.2) × 10–5 erg s–1 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 ± 2 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 ± 0.10. The temperature of the blackbody component also decreased, starting from ~80 keV, and the decay showed a significant break after ~2 s. The spectrum provides strong constraints on the standard synchrotron model, indicating that alternative mechanisms may give rise to the emission at these energies.en_US
dc.embargo.terms1 yearen_US
dc.identifier.citationBaring, M.G., Axelsson, M., Baldini, L., et al.. "GRB110721A: An Extreme Peak Energy and Signatures of the Photosphere." <i>The Astrophysical Journal Letters,</i> 757, (2012) The American Astronomical Society: L31. http://dx.doi.org/10.1088/2041-8205/757/2/L31.en_US
dc.identifier.doihttp://dx.doi.org/10.1088/2041-8205/757/2/L31en_US
dc.identifier.urihttps://hdl.handle.net/1911/70582en_US
dc.language.isoengen_US
dc.publisherThe American Astronomical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.subject.keywordgamma-ray burst: generalen_US
dc.subject.keywordgamma-ray burst: individual (GRB110721A)en_US
dc.subject.keywordradiation mechanisms: thermalen_US
dc.titleGRB110721A: An Extreme Peak Energy and Signatures of the Photosphereen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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