Peak energy-isotropic energy relation in the off-axis gamma-ray burst model

被引：73

作者：

Yamazaki, R ^{[1
]}

Ioka, K

Nakamura, T

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[2] Osaka Univ, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 606卷 / 01期

关键词：

gamma rays : bursts; gamma rays : theory;

D O I：

10.1086/421084

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a simple uniform jet model of prompt emissions of gamma-ray bursts (GRBs), we reproduce the observed peak energy - isotropic energy relation. A Monte Carlo simulation shows that the low isotropic energy part of the relation is dominated by events viewed from off-axis directions, and the number of the off-axis events is about one-third of the on-axis emissions. We also compute the observed event rates of the GRBs, the X-ray - rich GRBs, and the X-ray flashes detected by High Energy Transient Explorer 2, and we find that they are similar.

引用

页码：L33 / L36

页数：4