LOW-FREQUENCY SPECTRA OF GAMMA-RAY BURSTS

被引：190
作者：
KATZ, JI [1 ]
机构：
[1] WASHINGTON UNIV,MCDONNELL CTR SPACE SCI,ST LOUIS,MO 63130
来源：
ASTROPHYSICAL JOURNAL | 1994年 / 432卷 / 02期
关键词：
ACCELERATION OF PARTICLES; GAMMA-RAYS; BURSTS; SHOCK WAVES;
D O I：
10.1086/187523
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Particles with energies below the mean energy E0 in relativistic shocked plasmas should assume an equilibrium energy distribution. This leads to a synchrotron spectrum F(nu) proportional-to nu1/3 up to approximately the critical frequency nu0 of an electron with the energy E0. Application to gamma-ray bursts (GRBs) implies that a burst with 10(-5) ergs cm-2 s-1 of soft gamma rays and hnu0 = 300 keV should simultaneously be about 18th magnitude in visible light and a few muJy at 1 GHz (less if self-absorbed); the low-frequency intensities peak later at higher values.
引用
收藏
页码：L107 / L109
页数：3
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