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用IceCube中微子观测站寻找中微子点源

Search for neutrino point sources with the IceCube Neutrino Observatory

Juan A. Aguilar

摘要:

冰立方中微子观测站是目前正在南极建造的一个更大规模的探测器。完整的探测器将包括5,160个光电倍增管(PMT),部署在冰层内1.45-2.45公里深的86个字符串上。截至2009- 2010年夏季,探测器总数中的73个已经部署完毕,探测器正处于最后的建造阶段。在探测器(DeepCore)的中心已经安装了一个由6个弦组成的密集子阵列,以提高对低能中微子的灵敏度。冰立方探测原理是基于对探测器目标物质中中微子相互作用产生的超相对论μ子和簇射所诱导的切伦科夫光的测量。冰立方实验的主要科学目标是探测天体物理学中微子,这将有助于理解和解决有关宇宙射线起源和性质的悬而未决的问题。在这篇文章中,我们将介绍最新的实验结果,关于中微子点源的搜索使用的实验数据,在2008- 09年期间,探测器操作与40弦配置。文中还介绍了稳定的单个中微子源的分析结果以及不同星表的叠加分析结果。

英文摘要:

The IceCube Neutrino Observatory is a kilometer-scale detector currently under construction at the South Pole. The full detector will comprise 5,160 photomultipliers (PMTs) deployed on 86 strings from 1.45-2.45 km deep within the ice. As of the austral summer of 2009-10, 73 out of the total number strings have been deployed, and the detector is reaching its final construction phase. A dense sub-array of 6 strings in the center of the detector (DeepCore) has been already installed for enhancing the sensitivity to low energy neutrinos. The IceCube de- tection principle is based on the measurement of the Cherenkov light induced by ultra-relativistic muons and showers produced by neutrino interactions in the target matter of the detector. The main scientific goal of the IceCube experiment is the detection of astrophysical neu- trinos that will help to understand and settle the unresolved questions about the origin and nature of cosmic rays. In this contribution we will present the latest results of the experiment concerning the search for neutrino point sources using the experimental data taken during 2008- 09 where the detector was operated with a 40-string configuration. The results of the analysis for steady individual neutrino sources as well as the stacking analysis from different catalogs will be presented.

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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