伽玛暴光学与X射线余辉关联性分析
发布时间：2018-11-07 13:12
【摘要】：本文首先介绍了近年来伽玛暴的观测和理论进展,随后分析了分解后光学和X射线余辉成分之间的关系,来诊断它们可能的物理起源。 我们收集到104个采样好的光学与X射线余辉光变曲线的伽玛暴,基于我们的经验拟合后分解出不同的辐射成分。我们着重于幂率衰减的余辉成分,它们可能是伽玛暴火球的外激波产生的。我们关联分析发现伽玛暴光学与x射线余辉的相关性可分为三类。第一,在两个能段内都至少发现有一个拐折(这个比例为18/104,称为Group Ⅰ);第二,在光学或者X射线波段的光变曲线里至少发现一个拐折的(这个比例为18/104,其中光学为3,X射线为15,称为Group Ⅱ);第三,其它68个的暴(Group Ⅲ),其中可能是两波段完全没有关联,或者因相同时间范围的缺乏而不能证论两波段光学曲线的时间特征。我们用标准伽玛暴模型检验了Group Ⅰ的光学与X射线余辉的物理起源。这组里面的一些伽玛暴里能量注入的现象被发现。光学与X射线的拐折通常是复色的,但一个试验性的关系被发现。大部分的光学余辉拐折时间后的衰减斜率与喷流模型一致,但X射线余辉确不是。对Group Ⅱ和Group Ⅲ的分析发现光学与X射线的余辉辐射可能由不同物理起源的成分所主导。
[Abstract]:In this paper, the recent progress in observation and theory of gamma-ray bursts is introduced, and then the relationship between the components of decomposed optics and X-ray afterglow is analyzed to diagnose their possible physical origins. We have collected 104 gamma bursts with sampled optical and X-ray afterglow curves and decomposed different radiation components based on our empirical fitting. We focus on the afterglow components of power decay, which may be generated by the external shock of a gamma-ray fireball. Our correlation analysis shows that the correlation between gamma exposure and X-ray afterglow can be classified into three categories. First, at least one turn was found in both energy bands (a ratio of 18 / 104, called Group I); Second, at least one bend is found in the optical or X-ray band light curves (this ratio is 18 / 104, where the optical X ray is 15, known as Group II); Third, the other 68 Group 鈪，
本文编号：2316476
[Abstract]:In this paper, the recent progress in observation and theory of gamma-ray bursts is introduced, and then the relationship between the components of decomposed optics and X-ray afterglow is analyzed to diagnose their possible physical origins. We have collected 104 gamma bursts with sampled optical and X-ray afterglow curves and decomposed different radiation components based on our empirical fitting. We focus on the afterglow components of power decay, which may be generated by the external shock of a gamma-ray fireball. Our correlation analysis shows that the correlation between gamma exposure and X-ray afterglow can be classified into three categories. First, at least one turn was found in both energy bands (a ratio of 18 / 104, called Group I); Second, at least one bend is found in the optical or X-ray band light curves (this ratio is 18 / 104, where the optical X ray is 15, known as Group II); Third, the other 68 Group 鈪，
本文编号：2316476
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