GRB AFTERGLOW

被引：2

作者：

Zhang, B. ^{[1
]}

机构：

[1] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA

来源：

GAMMA-RAY BURSTS: 15 YEARS OF GRB AFTERGLOWS - PROGENITORS, ENVIRONMENTS AND HOST GALAXIES FROM THE NEARBY TO THE EARLY UNIVERSE | 2013年 / 61卷

关键词：

GAMMA-RAY BURST; SWIFT XRT DATA; HIGH-ENERGY EMISSION; X-RAY; COMPREHENSIVE ANALYSIS; LIGHT CURVES; FERMI OBSERVATIONS; PHYSICAL ORIGINS; OPTICAL-EMISSION; FLARES;

D O I：

10.1051/eas/1361046

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent observations of broad-band afterglow of gamma-ray bursts (GRBs) suggest that the standard external shock model cannot account for all the data. The observed "afterglow" of some GRBs includes the contributions from at least three emission components. Theoretically, there are naturally three emission sites. Besides the traditional external forward shock, the existence of X-ray flares demands late central engine activities of the GRB central engine, so that an "internal dissipation" region of the late wind is another emission site. After dissipation, this late wind would inevitably catch up with the blastwave, giving rise to a third emission site at a long-lasting reverse shock. Some recent efforts in understanding the broadband afterglow are reviewed.

引用

页码：285 / 293

页数：9

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