Early gamma-ray burst afterglows from relativistic blast waves in general radiative regimes

被引：32

作者：

Böttcher, M ^{[1
]}

Dermer, CD ^{[1
]}

机构：

[1] USN, Res Lab, EO Hulburt Ctr Space Res, Washington, DC 20375 USA

来源：

ASTROPHYSICAL JOURNAL | 2000年 / 532卷 / 01期

关键词：

gamma rays : bursts; X-rays : bursts; radiation mechanisms : nonthermal;

D O I：

10.1086/308580

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present simple analytical expressions for the predicted spectral and temporal behavior of the early afterglow radiation from gamma-ray bursts in radiative regimes intermediate between the adiabatic and the fully radiative solutions of the blast-wave hydrodynamic equations. Our expressions are valid as long as the relativistic electrons responsible for the observed synchrotron emission are in the fast-cooling regime and the blast wave is relativistic. We show that even a slight deviation from a perfectly adiabatic evolution results in significant changes of the temporal characteristics of the afterglow emission.

引用

页码：281 / 285

页数：5

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