Ioka 2008 伽玛暴遗迹作为"未知"TeV光子的源

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Title:		Hypernova and Gamma-Ray Burst Remnants as TeV Unidentified Sources
Authors:		Ioka, Kunihito; Meszaros, Peter
Publication:		eprint arXiv:0901.0744
Publication Date:		01/2009
Origin:		ARXIV
Keywords:		Astrophysics
Comment:		5 pages, 3 figures
Bibliographic Code:		2009arXiv0901.0744I

Abstract

We investigate hypernova (hyper-energetic supernova) and gamma-ray burst (GRB) remnants in our Galaxy as TeV gamma-ray sources, particularly in the role of potential TeV unidentified sources, which have no clear counterpart at other wavelengths. We show that the observed bright sources in the TeV sky could be dominated by GRB/hypernova remnants, even though they are fewer than supernova remnants (SNRs). If this is the case, TeV SNRs are more extended (and more numerous) than deduced from current observations. In keeping with their role as cosmic ray accelerators, we discuss hadronic gamma-ray emission from pi^0 decay, from beta decay followed by inverse Compton emission, and propose a third, novel process of TeV gamma-ray emission arising from the decay of accelerated radioactive isotopes such as 56Co entrained by relativistic or semi-relativistic jets in GRBs/hypernovae. We discuss the relevant observational signatures which could discriminate between these three mechanisms.

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