Liu 2009 SGR的hyper flare可能是高能中微子背景的来源

主要内容:
用伽玛暴火球模型作为hyper flare的模型, 计算的中微子产生和观测差不多(而伽玛暴产生的这种中微子的诞生率不够).

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Title:		Diffuse high energy neutrinos and cosmic rays from hyperflares of soft-gamma repeaters
Authors:		Liu, Xue-Wen; Wu, Xue-Feng; Lu, Tan
Publication:		eprint arXiv:0908.4371
Publication Date:		08/2009
Origin:		ARXIV
Keywords:		Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Extragalactic Astrophysics
Comment:		Accepted for publication in New Astronomy, 14 pages
Bibliographic Code:		2009arXiv0908.4371L

Abstract

We calculate the diffuse high energy (TeV - PeV) neutrino emission from hyperflares of Soft-Gamma Repeaters (SGRs), like the hyperflare risen from \astrobj{SGR 1806-20} on December 27 of 2004, within the framework of the fireball model. The fireball model for gamma-ray bursts (GRBs) can explain well the main features of this hyperflare and the subsequent multi-frequency terglow emission. The expected rate, $\sim 20-100$ Gpc$^{-3}$day$^{-1}$, of such hyperflares is well in excess of the GRBs rate. Our result shows that the contribution to the diffuse TeV-PeV neutrino background from such hyperflares is less than 10% of the contribution from GRBs. We also discuss the high energy cosmic rays (CRs) from these sources.

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