Where are the prompt emitting regions of long GRBs?

被引：4

作者：

Zhang, Zhibin ^{[1
]}

Zhao, Yunxia ^{[3
]}

Zhang, Yizhen ^{[1
,2
]}

机构：

[1] Guizhou Univ, Dept Phys, Coll Sci, Guiyang 550025, Guizhou, Peoples R China

[2] Joint Res Ctr Astron, Guiyang 550025, Guizhou, Peoples R China

[3] Guizhou Univ, Affiliated Middle Sch, Guiyang 550025, Guizhou, Peoples R China

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2011年 / 333卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Gamma-ray burst: general; Methods: data analysis; GAMMA-RAY BURSTS; AFTERGLOW LIGHT CURVES; EXTERNAL SHOCK MODEL; BRIGHTNESS DISTRIBUTION; RELATIVISTIC FIREBALLS; INTERNAL SHOCKS; HUBBLE DIAGRAM; JET BREAKS; ENERGY; ENERGETICS;

D O I：

10.1007/s10509-011-0620-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have used a simple method to estimate the prompt emission radii of 27 Swift and 37 pre-Swift long gamma-ray bursts with known redshift and jet break time. The prompt gamma-rays are found to emit mainly from a beamed jet with dynamic open angle narrower than its geometric open angle, suggesting an obviously dynamic evolution from prompt to follow-up phases for the jetted outflow. Under condition of the external shock scenario, we confirm that long gamma-ray bursts are produced at a larger radius of similar to 10(16) cm, which puts a strict constraint on the currently theoretical models.

引用

页码：89 / 98

页数：10

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