He, Hao-Ning 2011 GRB 100728A的高能GeV辐射的来源

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来自X射线耀的种子光子被外激波电子逆康普顿散射

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Title:		Origin of the GeV Emission During the X-ray Flaring Activity in GRB 100728A
Authors:		He, Hao-Ning; Zhang, Bin-Bin; Wang, Xiang-Yu; Li, Zhuo; Mészáros, Peter
Publication:		eprint arXiv:1112.2253
Publication Date:		12/2011
Origin:		ARXIV
Keywords:		Astrophysics - High Energy Astrophysical Phenomena
Bibliographic Code:		2011arXiv1112.2253H

Abstract

Recently, Fermi-LAT detected GeV emission during the X-ray flaring activity in GRB 100728A. We study various scenarios for its origin. The hard spectrum of the GeV emission favors the external inverse-Compton origin in which X-ray flare photons are up-scattered by relativistic electrons in the external forward shock. This external IC scenario, with anisotropic scattering effect taken into account, can reproduce the temporal and spectral properties of the GeV emission in GRB 100728A.

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