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题名: GRB afterglows in the nonrelativistic phase
作者: Huang, YF; Lu, T
刊名: 2008 NANJING GAMMA-RAY BURST CONFERENCE
出版日期: 2008
卷号: 1065, 页码:165-
英文摘要: When discussing the afterglows of gamma-ray bursts analytically, it is usually assumed that the external shock is always ultra-relativisitc, with the bulk Lorentz factor much larger than 1. However, we show that the deceleration of the external shock is actually very quick. The afterglow may typically enter the nonrelativistic phase in several days to teens of days, and may even enter the deep Newtonian phase in tens of days to several months. One thus should be careful in using those familiar analytical expressions that are derived only under the ultra-relativistic assumption. To explain the observed afterglows that typically last for a few weeks to several months, we need to consider the dynamics and radiation in the nonrelativisitic phase.
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/17117
Appears in Collections:陆埮_期刊论文

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