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arXiv 0909.5562astro-ph.HE
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用贝加尔中微子望远镜NT200寻找高能中微子扩散通量

Search for a diffuse flux of high-energy neutrinos with the Baikal neutrino telescope NT200

Zh. -A. Dzhilkibaev

摘要:

我们提出了一个新的数据分析的结果,在1998年至2002年寻找高能地外中微子。分析是基于一个完整的重建的高能量级联参数:顶点坐标,能量和到达方向。所有中微子的口味,预测的几个模型的活动星系核的中微子源的扩散通量的上限推导。对于中微子谱的${\bf E^{-2}}$行为,我们的极限是在中微子能量范围${\bf 2 \times 10^4 ÷2 \times 10^7}$ GeV上的${\bf E^{2} F_ν(E) < 2.9 \times 10^{-7}}$ cm ${\bf ^{-2}}$ s ${\bf ^{-1}}$ sr ${\bf ^{-1}}$ GeV。该限度比先前分析获得的限度严格2.8倍。

英文摘要:

We present the results of a new analysis of data taken in 1998-2002 for a search for high-energy extraterrestrial neutrinos. The analysis is based on a full reconstruction of high-energy cascade parameters: vertex coordinates, energy and arrival direction. Upper limits on the diffuse fluxes of all neutrino flavors, predicted by several models of AGN-like neutrino sources are derived. For an ${\bf E^{-2}}$ behavior of the neutrino spectrum, our limit is ${\bf E^{2} F_ν(E) < 2.9 \times 10^{-7}}$ cm${\bf ^{-2}}$ s${\bf ^{-1}}$ sr${\bf ^{-1}}$ GeV over a neutrino energy range ${\bf 2 \times 10^4 ÷2 \times 10^7}$ GeV. This limit is by a factor of 2.8 more stringent than a limit obtained with a previous analysis.

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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