天文学进展2011，Vol.29Issue(2)：168-174,7.
伽马射线暴的光度-光变复杂度关系
The Correlation Between Variability and Luminosity for the Long Gamma-Ray Bursts
摘要
Abstract
The variability of Gamma-ray Burst is a quantitative measure of whether its light curve is spiky or smooth. From the detected spectroscopic redshift, peak fluxes, and highresolution light curves of long Gamma-ray Burst, it was found that the isotropic peak luminosity positively correlate with the variability of light curves: the more variable bursts(with larger V) tend to have higher intrinsic isotropic luminosities L. This correlation was originally found by Reichart et al. using a sample of 18 Gamma-ray Bursts. In this paper, the definition and algorithm of variability are detailedly investigated and analyzed. The V - L correlation and fitting results are also listed. If L - V relation can be confirmed, it can be adopted as rough distance indicators and redshift estimators of a Gamma-ray Burst from parameters measured merely at gamma-ray prompt emission and it can be used to constrain cosmological parameters.关键词
伽马射线暴/瞬时辐射/光变复杂度Key words
gamma-ray burst/ prompt emission/ variability分类
天文与地球科学引用本文复制引用
李兆升,陈黎,王德华..伽马射线暴的光度-光变复杂度关系[J].天文学进展,2011,29(2):168-174,7.基金项目
国家自然科学基金(10778716) （10778716）
973计划(2009CB824800) （2009CB824800）
北京师范大学自主科研基金 （）
中央高校基本科研业务费专项资金 （）
