The hardness evolution of gamma-ray burst pulses

被引：11

作者：

Crider, A

Liang, EP

Preece, RD

Briggs, MS

Pendleton, GN

Paciesas, WS

Band, DL

Matteson, JL

机构：

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

[2] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA

[3] Univ Calif San Diego, Ctr Astrophys & Space Sci 0424, La Jolla, CA 92093 USA

来源：

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

关键词：

gamma-ray; bursts; observations;

D O I：

10.1051/aas:1999280

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have analyzed the evolution of the spectral hardness parameter, E-pk (the maximum of the nu F-nu spectrum) as a function of fluence in gamma-ray bursts. We fit 41 pulses within 26 bursts with the trend reported by Liang & Kargatis (1996) which found that E-pk decays exponentially with respect to photon fluence Phi(t). We also fit these pulses with a slight modification of this trend, where E-pk decays linearly with energy fluence. In both cases, we found the set of 41 pulses to be consistent with the trend.

引用

收藏

页码：401 / 402

页数：2

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