Off-axis emission from the beamed afterglow of gamma-ray bursts and a possible interpretation of the slowly declining X-ray afterglow of GRB 980425

被引：37

作者：

Nakamura, T ^{[1
]}

机构：

[1] Kyoto Univ, Yukawa Inst Theoret Phys, Sakyo Ku, Kyoto 6068502, Japan

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 522卷 / 02期

关键词：

gamma rays : bursts; supernovae : individual (SN 1998bw);

D O I：

10.1086/312235

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A formula is derived for off-axis emissions from the beamed afterglow of gamma-ray bursts in a synchrotron model. The formula is applied to inhomogeneous circumstellar matter obeying n proportional to r(-2), which is also suggested for SN 1998bw/GRB 980425. The slow decline rate as well as the X-ray flux, which is similar to the observed values, are obtained for an appropriate choice of parameters so that the association of GRB 980425 with SN 1998bw is further strengthened.

引用

页码：L101 / L104

页数：4

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