THE LATE PEAKING AFTERGLOW OF GRB 100418A

	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
刊名	ASTROPHYSICAL JOURNAL
	2011-02-01
卷号	727 期号:2 页码:132(9pp)
关键词	gamma-ray burst: individual (GRB 100418A)
ISSN号	0004-637X
英文摘要	GRB 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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	GAMMA-RAY BURST ; SWIFT ULTRAVIOLET/OPTICAL TELESCOPE ; LIGHT CURVES ; ALERT TELESCOPE ; CENTRAL ENGINE ; REM ; IDENTIFICATION ; CALIBRATION ; GRB-060206 ; SUPERNOVA
收录类别	SCI
语种	英语
WOS记录号	WOS:000286662000071
公开日期	2012-08-07
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/4476]
专题	紫金山天文台_南极天文中心
作者单位	1.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
推荐引用方式 GB/T 7714	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).