Wang, K. 2013 X-ray耀发阶段的GeV辐射

主要内容:
晚期内积波产生的X射线被外激波逆康普顿散射到GeV。并用到GRB 100728A上。

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Title:		GeV Emission during X-Ray Flares from Late Internal Shocks: Application to GRB 100728A
Authors:		Wang, K.; Dai, Z. G.
Affiliation:		AA(School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China ; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, China; dzg@nju.edu.cn), AB(School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China ; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, China)
Publication:		The Astrophysical Journal, Volume 772, Issue 2, article id. 152, 8 pp. (2013). (ApJ Homepage)
Publication Date:		08/2013
Origin:		IOP
Astronomy Keywords:		gamma-ray burst: general, radiation mechanisms: non-thermal
DOI:		10.1088/0004-637X/772/2/152
Bibliographic Code:		2013ApJ...772..152W

Abstract

Recently, the GeV radiation during the X-ray flare activity in GRB 100728A was detected by Fermi/LAT. Here, we study the dynamics and emission properties of a collision between two homogeneous shells based on the late internal shock model. The GeV photons can be produced from X-ray flare photons being upscattered by relativistic electrons that are accelerated by forward-reverse shocks, where the involved radiative processes include synchrotron self-Compton and crossing inverse-Compton scattering. Using analytical and numerical calculations, the observed spectral properties in GRB 100728A can be well explained.

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