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arXiv 0811.1068astro-ph
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伽马射线暴后期内震的X射线和高能耀斑

X-Ray and high energy flares from late internal shocks of gamma-ray bursts

Y. W. Yu, Z. G. Dai

摘要:

在详细描述两个均匀壳层碰撞产生的一对激波动力学的基础上,在晚期内激波(LIS)模型的框架内研究了伽马射线暴(GRB)的余辉耀斑。首先,通过面对模型的一些基本的观测特征的X射线耀斑,我们发现一些约束的性质的预碰撞壳直接决定的中央引擎的伽玛暴。其次,在宽的参数空间中研究了与X射线耀斑相关的高能辐射,这种高能辐射来源于LISs的同步辐射自康普顿(SSC)辐射。预测的高能耀斑的通量可能高达$\sim 10^{-8}\rm erg cm^{-2}s^{-1}$,这可能是由\textit{the Fermi Space Telescope}上的大面积望远镜(LAT)探测到的

英文摘要:

We study afterglow flares of gamma-ray bursts (GRBs) in the framework of the late internal shock (LIS) model based on a careful description for the dynamics of a pair of shocks generated by a collision between two homogeneous shells,. First, by confronting the model with some fundamental observational features of X-ray flares, we find some constraints on the properties of the pre-collision shells that are directly determined by the central engine of GRBs. Second, high energy emission associated with X-ray flares, which arises from synchrotron self-Compton (SSC) emission of LISs, is investigated in a wide parameter space. The predicted flux of high energy flares may reach as high as $\sim 10^{-8}\rm erg cm^{-2}s^{-1}$, which is likely to be detectable with the Large Area Telescope (LAT) aboard \textit{the Fermi Space Telescope}

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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