THE LATE PEAKING AFTERGLOW OF GRB 100418A
THE LATE PEAKING AFTERGLOW OF GRB 100418A
复制标题
GRB 100418A 的后期峰值余辉
DOI：
10.1088/0004-637x/727/2/132
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发表时间：
2011-02
影响因子：
4.9
通讯作者：
Marshall, F. E. Antonelli, L. A. Burrows, D. N. Co
中科院分区：
文献类型：
--
作者：
et al.;Liang, E. W.;O'Brien, P. T. Oates, S. R. Osborne,;, S. T.;Marshall, F. E. Antonelli, L. A. Burrows, D. N. Co
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 ∼7 × 103 s after the trigger, peak at ∼5 × 104 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 ∼2.5 × 104 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 ⩾102 times the 1051 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 T90 for the GRB jet viewed on-axis to be very short, ∼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 ∼ 2 × 106 s indicates a jet half-opening angle of at least ∼14°, and a relatively high-collimation-corrected jet energy of Ejet ⩾ 1052 erg.
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DOI：
10.1086/320255
发表时间：
2000-11
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
Bing Zhang;P. Mészáros
通讯作者：
Bing Zhang;P. Mészáros
DOI：
10.1086/421285
发表时间：
2003-09
期刊：
The Astrophysical Journal
影响因子：
--
作者：
D. Yonetoku;T. Murakami;T. Nakamura;R. Yamazaki;A. Inoue;K. University;Kyoto University;O. Universit
通讯作者：
D. Yonetoku;T. Murakami;T. Nakamura;R. Yamazaki;A. Inoue;K. University;Kyoto University;O. Universit
DOI：
10.1111/j.1365-2966.2005.09411.x
发表时间：
2005-08
影响因子：
4.8
作者：
Y. Zou;X. Wu;Z. Dai
通讯作者：
Y. Zou;X. Wu;Z. Dai
DOI：
10.1007/978-1-4020-2256-2_10
发表时间：
2004
期刊：
Progress in Astronomy
影响因子：
--
作者：
T. Lu;Yong-Feng Huang;Z. Dai;D. Wei
通讯作者：
T. Lu;Yong-Feng Huang;Z. Dai;D. Wei
DOI：
10.1086/517868
发表时间：
2007-06
期刊：
The Astrophysical Journal
影响因子：
--
作者：
D. Grupe;C. Gronwall;Xiang-Yu Wang;P. Roming;J. Cummings;Bing Zhang;P. Mészáros;M. D. Trigo
通讯作者：
D. Grupe;C. Gronwall;Xiang-Yu Wang;P. Roming;J. Cummings;Bing Zhang;P. Mészáros;M. D. Trigo