Cheng 2010 部分伽马暴来自超导宇宙弦的爆发

主要内容:
不懂啊不懂
就是说有些暴的时标太短，高红移暴的数量太多，于是提出有些伽马暴可能来自别的起源--宇宙弦。

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Title:		High Redshift Gamma-Ray Bursts: Observational Signatures of Superconducting Cosmic Strings?
Authors:		Cheng, K. S.; Yu, Yun-Wei; Harko, T.
Publication:		eprint arXiv:1005.3427
Publication Date:		05/2010
Origin:		ARXIV
Keywords:		Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Extragalactic Astrophysics, High Energy Physics - Phenomenology, High Energy Physics - Theory
Comment:		5 pages, 1 figures, accepted for publication in Phys. Rev. Lett
Bibliographic Code:		2010arXiv1005.3427C

Abstract

The high-redshift gamma-ray bursts (GRBs), GRBs 080913 and 090423, challenge the conventional GRB progenitor models by their short durations, typical for short GRBs, and their high energy releases, typical for long GRBs. Meanwhile, the GRB rate inferred from high-redshift GRBs also remarkably exceeds the prediction of the collapsar model, with an ordinary star formation history. We show that all these contradictions could be eliminated naturally, if we ascribe some high-redshift GRBs to electromagnetic bursts of superconducting cosmic strings. High-redshift GRBs could become a reasonable way to test the superconducting cosmic string model, because the event rate of cosmic string bursts increases rapidly with increasing redshifts, whereas the collapsar rate decreases.

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