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arXiv 0810.1452astro-ph
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千米级深海中微子望远镜KM3NeT的单个GRB灵敏度

Individual GRB sensitivity of a cubic-kilometer deep-sea neutrino telescope KM3NeT

D. Dornic, G. Lelaizant

摘要:

伽马射线暴(GRB)是一种强而多变的伽玛射线源,表明宇宙粒子加速器的存在。在喷流中存在强子加速的假设下,根据内禀火球模型参数和地面和卫星观测到的伽玛暴电磁数据,导出了中微子能谱。利用放置在地中海的一个100公里尺度中微子探测器的性能特点,单独计算了所有具有已知红移的伽马射线暴在该探测器视界以下的事件数。该探测器良好的角分辨率和伽玛暴探测时间附近的窄时间窗允许抑制几乎所有的大气中微子本底。从SWIFT GRB目录中,我们得到了一个爆发的平均特征,以便被一个100公里的探测器作为一个单独的点源探测到。

英文摘要:

Gamma-ray bursts (GRB) are powerful and highly variable sources of gamma rays that indicate the existence of cosmic particle accelerators. Under the assumption of hadronic acceleration in the jet, the expected neutrino energy spectrum is derived according to the intrinsic fireball model parameters and to the observed electromagnetic data of GRBs measured with ground-based and satellite observations. Using the performance characteristics of a cubic-kilometre scale neutrino detector placed in the Mediterranean Sea, the number of events is calculated individually for all the GRBs having a known redshift below the horizon of this detector. The good angular resolution of this detector and the narrow time windows around the GRB detection time allow suppression of almost all the atmospheric neutrino background. From the SWIFT GRB catalogue, we have derived the mean characteristics of a burst in order to be detected as an individual point source by a cubic-kilometre detector.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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