Mészáros 2011 磁化shell的碰撞产生GeV辐射

主要内容:
从基本的动力学出发，考虑碰撞和辐射，值得读，看看具体怎么操作的--有些舍去、有些得考虑。

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Title:		GeV Emission from Collisional Magnetized Gamma Ray Bursts
Authors:		Mészáros, P.; Rees, M. J.
Publication:		eprint arXiv:1104.5025
Publication Date:		04/2011
Origin:		ARXIV
Keywords:		Astrophysics - High Energy Astrophysical Phenomena
Comment:		ApJ(Lett.), in press
Bibliographic Code:		2011arXiv1104.5025M

Abstract

Magnetic fields may play a dominant role in gamma-ray bursts, and recent observations by the Fermi satellite indicate that GeV radiation, when detected, arrives delayed by seconds from the onset of the MeV component. Motivated by this, we discuss a magnetically dominated jet model where both magnetic dissipation and nuclear collisions are important. We show that, for parameters typical of the observed bursts, such a model involving a realistic jet structure can reproduce the general features of the MeV and a separate GeV radiation component, including the time delay between the two. The model also predicts a multi-GeV neutrino component.

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