软γ中继站超耀斑的扩散高能中微子和宇宙射线
Diffuse high energy neutrinos and cosmic rays from hyperflares of soft-gamma repeaters
摘要：
在火球模型的框架下，计算了软γ重复源（SGR）超耀斑（如2004年12月27日\astrobj{SGR 1806-20}产生的超耀斑）的扩散高能中微子辐射.伽马射线暴（GRB）的火球模型能很好地解释这次超耀斑及其后续多频地辉辐射的主要特征。这种超耀斑的预期速率，$\sim 20-100$ Gpc $^{-3}$ day $^{-1}$，远远超过GRB速率。我们的结果表明，这种超耀斑对TeV-PeV中微子扩散背景的贡献小于GRB贡献的10%。我们还讨论了这些源的高能宇宙射线。
英文摘要：
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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