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arXiv 2402.17352astro-ph.HEastro-ph.GA
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基于LHAASO γ射线观测搜索天鹅座气泡的中微子发射

Search for neutrino emission from the Cygnus Bubble based on LHAASO $γ$-ray observations

Wenlian Li, Tian-Qi Huang, Donglian Xu, Huihai He

AI总结:

基于LHAASO γ射线观测构建模板,利用IceCube七年数据搜索天鹅座气泡中微子发射,未发现显著信号,并给出5 TeV处90%置信水平通量上限。

摘要:

天鹅座区域包含巨大的分子云、原子云和年轻恒星,是一个有前景的银河系中微子源候选体。宇宙射线在该区域的输运可以产生中微子和γ射线。近期,高海拔宇宙线观测站(LHAASO)在该区域探测到一个超高能γ射线气泡(天鹅座气泡)。利用冰立方中微子天文台(IceCube)在7年全探测器运行期间公开的径迹事件,我们基于LHAASO γ射线观测构建中微子发射模板,搜索来自天鹅座气泡的相关中微子信号。对于所有采用的模板,均未发现显著信号。基于7 TeV γ射线通量模板,我们在5 TeV处设定了天鹅座气泡中微子发射的90%置信水平(C.L.)通量上限为$5.7\times10^{-13}\\, \mathrm{TeV}^{-1}\mathrm{cm}^{-2}\mathrm{s}^{-1}$。

英文摘要:

The Cygnus region, which contains massive molecular and atomic clouds and young stars, is a promising Galactic neutrino source candidate. Cosmic rays transport in the region can produce neutrinos and $γ$-rays. Recently, the Large High Altitude Air Shower Observatory (LHAASO) detected an ultrahigh-energy $γ$-ray bubble (Cygnus Bubble) in this region. Using publicly available track events detected by the IceCube Neutrino Observatory in 7 years of full detector operation, we conduct searches for correlated neutrino signals from the Cygnus Bubble with neutrino emission templates based on LHAASO $γ$-ray observations. No significant signals were found for any employed templates. With the 7 TeV $γ$-ray flux template, we set a flux upper limit of 90% confidence level (C.L.) for the neutrino emission from the Cygnus Bubble to be $5.7\times10^{-13}\, \mathrm{TeV}^{-1}\mathrm{cm}^{-2}\mathrm{s}^{-1}$ at 5 TeV.

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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