GeV Emission during X-Ray Flares from Late Internal Shocks: Application to GRB 100728A
High Energy Astrophysical Phenomena
2013-08-07 v1
Abstract
Recently, the GeV radiation during the X-ray flare activity in GRB 100728A was detected by Feimi/LAT. Here we study the dynamics and emission properties of collision between two homogeneous shells based on the late internal shock model. The GeV photons can be produced from X-ray flare photons up-scattered by relativistic electrons accelerated by forward-reverse shocks, where involved radiative processes include synchrotron self-Compton and crossing inverse-Compton scattering. By analytical and numerical calculations, the observed spectral properties in GRB 100728A can be well explained.
Keywords
Cite
@article{arxiv.1308.1248,
title = {GeV Emission during X-Ray Flares from Late Internal Shocks: Application to GRB 100728A},
author = {K. Wang and Z. G. Dai},
journal= {arXiv preprint arXiv:1308.1248},
year = {2013}
}
Comments
21 pages, 5 figures, published in ApJ