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THE LATE PEAKING AFTERGLOW OF GRB 100418A
Marshall, F. E.1; Antonelli, L. A.2; Burrows, D. N.3; Covino, S.4,5; de Pasquale, M.6; Evans, P. A.7; Fugazza, D.4; Holland, S. T.8,9; Liang, E. W.10,11; O'Brien, P. T.7; Oates, S. R.6; Osborne, J. P.7; Pagani, C.7; Sakamoto, T.1,8,12; Siegel, M. H.; Wu, X. F.10,13; Zhang, B.10
2011-02-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume727Issue:2Pages:132(9pp)
AbstractGRB 100418A is a long gamma-ray burst (GRB) at redshift z = 0.6235 discovered with the Swift Gamma-ray Burst Explorer with unusual optical and X-ray light curves. After an initial short-lived, rapid decline in X-rays, the optical and X-ray light curves observed with Swift are approximately flat or rising slightly out to at least similar to 7 x 10(3) s after the trigger, peak at similar to 5 x 10(4) s, and then follow an approximately power-law decay. Such a long optical plateau and late peaking is rarely seen in GRB afterglows. Observations with Rapid Eye Mount during a gap in the Swift coverage indicate a bright optical flare at similar to 2.5 x 10(4) s. The long plateau phase of the afterglow is interpreted using either a model with continuous injection of energy into the forward shock of the burst or a model in which the jet of the burst is viewed off-axis. In both models the isotropic kinetic energy in the late afterglow after the plateau phase is >= 10(2) times the 10(51) erg of the prompt isotropic gamma-ray energy release. The energy injection model is favored because the off-axis jet model would require the intrinsic T-90 for the GRB jet viewed on-axis to be very short, similar to 10 ms, and the intrinsic isotropic gamma-ray energy release and the true jet energy to be much higher than the typical values of known short GRBs. The non-detection of a jet break up to t similar to 2 x 10(6) s indicates a jet half-opening angle of at least similar to 14 degrees, and a relatively high-collimation-corrected jet energy of E-jet >= 10(52) erg.
KeywordGamma-ray Burst: Individual (Grb 100418a)
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/727/2/132
WOS KeywordGAMMA-RAY BURST ; SWIFT ULTRAVIOLET/OPTICAL TELESCOPE ; LIGHT CURVES ; ALERT TELESCOPE ; CENTRAL ENGINE ; REM ; IDENTIFICATION ; CALIBRATION ; GRB-060206 ; SUPERNOVA
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000286662000071
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/4476
Collection南极天文中心
Affiliation1.NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA
2.INAF Astron Observ Rome, I-00040 Rome, Italy
3.Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA
4.INAF Osservatorio Astron Brera, I-23807 Merate, LC, Italy
5.INAF TNG Fdn Galileo Galilei, Brena Baja 38712, TF, Spain
6.Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England
7.Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England
8.NASA, Ctr Res & Explorat Space Sci & Technol, GSFC, Greenbelt, MD 20771 USA
9.Univ Space Res Assoc, Columbia, MD 21044 USA
10.Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA
11.Guangxi Univ, Dept Phys, Guangxi 530004, Peoples R China
12.Univ Maryland, Joint Ctr Astrophys, Baltimore, MD 21250 USA
13.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
Recommended Citation
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Marshall, F. E.,Antonelli, L. A.,Burrows, D. N.,et al. THE LATE PEAKING AFTERGLOW OF GRB 100418A[J]. ASTROPHYSICAL JOURNAL,2011,727(2):132(9pp).
APA Marshall, F. E..,Antonelli, L. A..,Burrows, D. N..,Covino, S..,de Pasquale, M..,...&Zhang, B..(2011).THE LATE PEAKING AFTERGLOW OF GRB 100418A.ASTROPHYSICAL JOURNAL,727(2),132(9pp).
MLA Marshall, F. E.,et al."THE LATE PEAKING AFTERGLOW OF GRB 100418A".ASTROPHYSICAL JOURNAL 727.2(2011):132(9pp).
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