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arXiv 1509.00517astro-ph.HE
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用VERITAS寻找与IceCube高能中微子有关的TeV gamma-ray发射

Searching for TeV gamma-ray emission associated with IceCube high-energy neutrinos using VERITAS

M. Santander

摘要:

寻找长期寻找的宇宙射线来源的一个线索是最近冰立方探测器对高能中微子天体物理通量的观测,因为这些中微子可能起源于宇宙射线加速器的强子相互作用。虽然中微子的天空图显示没有显着的点源的迹象,到目前为止,有可能利用成像空气切伦科夫望远镜(IACT)阵列的灵敏度,如VERITAS,从中微子方向搜索强子伽马射线发射。在过去的2年里,已经使用VERITAS阵列观测了IceCube探测到的中微子事件的位置。观测仅限于μ子中微子事件,因为它们的典型角度重建不确定性低于1度,小于VERITAS视场的3.5度直径。VERITAS的位置进一步限制了中微子事件的位置,可以观察到那些位于北部天空,或在温和的南偏。观测位置的列表是从已发表的结果和冰立方提供的一组高能μ子轨道中选择的。我们目前的现状和一些初步的结果,从这个计划。

英文摘要:

A clue to finding the long-sought sources of cosmic rays is the recent observation of an astrophysical flux of high-energy neutrinos by the IceCube detector, since these possibly originate in hadronic interactions at cosmic-ray accelerators. While the neutrino sky map shows no significant indication of point sources so far, it is possible to utilize the sensitivity of Imaging Air Cherenkov Telescope (IACT) arrays, such as VERITAS, to search for hadronic gamma-ray emission from the neutrino directions. Over the last 2 years, the positions of neutrino events detected by IceCube have been observed using the VERITAS array. Observations have been limited to muon neutrino events, since their typical angular reconstruction uncertainty is below 1 degree, smaller than the 3.5-degree diameter of the VERITAS field of view. The location of VERITAS further constrains the neutrino event positions that can be observed to those located in the northern sky, or at moderate southern declinations. The list of observed positions was selected from published results and a set of high-energy muon tracks provided by IceCube. We present the current status and some preliminary results from this program.

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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