A Close Correlation between the Spectral Lags and Redshifts of Gamma-Ray Bursts

被引：0

作者：

TingFeng Yi GuangZhong Xie and FuWen Zhang Physics Department Yunnan University Kunming National Astronomical Observatories Yunnan Observatory Chinese Academy of Sciences Kunming Yunnan Astronomical Center Yunnan University Kunming Graduate School of Chinese Academy of Sciences Beijing ^{[1
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机构：

来源：

Chinese Journal of Astronomy and Astrophysics | 2008年 / 01期

关键词：

gamma-rays:; bursts; —; observations; methods:; statistical;

D O I：

暂无

中图分类号：

P172.3 [γ射线天文学];

学科分类号：

070401 ;

摘要：

Based on nine BATSE GRBs with known redshifts, we found that the maximum spectral lag of all the pulses in a gamma-ray burst (GRB) appears to be anti-correlated with the redshift of the burst. In order to confirm this finding, we analyzed 10 GRBs detected by HETE-2 with known redshifts and found a similar relation. Using the relation, we estimated the redshifts of 878 long GRBs in the BATSE catalog, then we investigated the distributions of the redshifts and 869 Eiso of these GRBs. The distribution of the estimated redshifts is concentrated at z = 1.4 and the distribution of Eiso peaks at 1052 .5 erg. The underlying physics of the correlation is unclear at present.

引用

页码：81 / 86

页数：6