Testing for synchrotron self-absorption in GRB 970111

被引：7

作者：

Crider, A ^{[1
]}

Liang, EP ^{[1
]}

机构：

[1] Rice Univ, Dept Space Phys & Astron, Houston, TX 77005 USA

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1999年 / 138卷 / 03期

关键词：

gamma-rays : bursts; gamma-rays : observations; radiation mechanisms : non-thermal; techniques : spectroscopic;

D O I：

10.1051/aas:1999286

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The time-resolved spectra of several gamma-ray bursts have shown that near the beginning of the burst, some absorption mechanism makes the spectra inconsistent with the simple optically-thin synchrotron shock model. We fit GRB 970111, which shows strong evidence for such absorption, with a synchrotron shock spectra suffering self-absorption. The synchrotron self-absorption shape does fit the BATSE time-evolving spectra, although it may be inconsistent with BeppoSAX WFC data. If the turnover just below the spectral break is due to synchrotron self-absorption, a magnetic field strength of 4 10(7) G is required.

引用

页码：405 / 406

页数：2

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