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arXiv 0705.1186astro-ph
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用AMANDA寻找北半球伽马射线暴中的μ子中微子

The Search for Muon Neutrinos from Northern Hemisphere Gamma-Ray Bursts with AMANDA

The IceCube Collaboration, A. Achterberg, the IPN Collaboration, :, K. Hurley

摘要:

本文介绍了1997 - 2003年南极μ子和中微子探测器阵列(AMANDA)中微子观测结果与北半球400多个伽马射线暴(GRB)光子观测结果的相关性分析。在这段时间内,AMANDA的μ子中微子有效收集区域比任何其他现有的探测器都要大。基于我们在数据集中伽玛暴期间和伽玛暴之前的零中微子观测,我们对与伽马射线暴相关的μ子中微子发射设定了最严格的上限。假设一个Waxman-Bahcall谱,并考虑所有系统的不确定性,我们的通量上限在1 PeV处的归一化值为E^2Φ_v { \leq } 6.0 \times 10^{-9} GeV cm^{-2} s^{-1} sr^{-1},90%的事件预计在~10 TeV ~3 PeV的能量范围内。这一限制的影响,几个理论模型的伽玛暴进行了讨论,以及未来的潜力,为下一代中微子望远镜探测伽玛暴。最后,我们简要描述了对该分析的几项修改,以便将其应用于其他类型的瞬变点源。

英文摘要:

We present the results of the analysis of neutrino observations by the Antarctic Muon and Neutrino Detector Array (AMANDA) correlated with photon observations of more than 400 gamma-ray bursts (GRBs) in the Northern Hemisphere from 1997 to 2003. During this time period, AMANDA's effective collection area for muon neutrinos was larger than that of any other existing detector. Based on our observations of zero neutrinos during and immediately prior to the GRBs in the dataset, we set the most stringent upper limit on muon neutrino emission correlated with gamma-ray bursts. Assuming a Waxman-Bahcall spectrum and incorporating all systematic uncertainties, our flux upper limit has a normalization at 1 PeV of E^2Φ_ν {\leq} 6.0 \times 10^{-9} GeV cm^{-2} s^{-1} sr^{-1}, with 90% of the events expected within the energy range of ~10 TeV to ~3 PeV. The impact of this limit on several theoretical models of GRBs is discussed, as well as the future potential for detection of GRBs by next generation neutrino telescopes. Finally, we briefly describe several modifications to this analysis in order to apply it to other types of transient point sources.

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