Delayed X-ray afterglows from obscured gamma-ray bursts in star-forming regions

被引：17
|
作者：
Mészáros, P
Gruzinov, A
机构：
[1] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
[2] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA
[3] Penn State Univ, Davey Lab 525, University Pk, PA 16802 USA
来源：
ASTROPHYSICAL JOURNAL | 2000年 / 543卷 / 01期
关键词：
gamma rays : bursts; radiation mechanisms : thermal;
D O I：
10.1086/318175
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
For gamma-ray bursts occurring in dense star-forming regions, the X-ray afterglow behavior minutes to days after the trigger may be dominated by the small-angle scattering of the prompt X-ray emission off dust grains. We give a simple illustrative model for the X-ray light curves at different X-ray energies and discuss possible implications. A bump followed by a steeper decay in soft X-rays is predicted for bursts that are heavily obscured in the optical.
引用
收藏
页码：L35 / L37
页数：3
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