e± pair cascades and precursors in gamma-ray bursts

被引：57

作者：

Mészáros, P

Ramirez-Ruiz, E

Rees, MJ

机构：

[1] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[2] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16803 USA

[3] Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA

来源：

ASTROPHYSICAL JOURNAL | 2001年 / 554卷 / 02期

关键词：

cosmology : miscellaneous; gamma rays : bursts; X-rays : bursts;

D O I：

10.1086/321404

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Gamma-ray burst sources with a high luminosity can produce electron-positron pair cascades in their environment as a result of backscattering of a seed fraction of their original hard spectrum. The resulting spectral modifications offer the possibility of diagnosing not only the compactness parameter of the gamma-ray-emitting region but also the baryonic density of the environment external to the burst.

引用

页码：660 / 666

页数：7

共 5 条

[1]

Dermer CD, 2000, ASTROPHYS J, V534, pL155, DOI 10.1086/312669

[2] RELATIVISTIC THERMAL PLASMAS - PAIR PROCESSES AND EQUILIBRIA [J].