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arXiv 2210.01650astro-ph.HEastro-ph.GA
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高能中微子诱导级联:2021年Baikal-GVD观测到的耀变射电耀斑源TXS 0506+056方向

High-energy neutrino-induced cascade from the direction of the flaring radio blazar TXS 0506+056 observed by Baikal-GVD in 2021

GVD Collaboration, A. K. Erkenov, N. A. Kosogorov, Y. A. Kovalev, Y. Y. Kovalev, A. V. Plavin, A. V. Popkov, A. B. Pushkarev, D. V. Semikoz, Y. V. Sotnikova, S. V. Troitsky

AI总结:

Baikal-GVD于2021年探测到来自TXS 0506+056方向的224±75 TeV高能中微子级联事件,支持射电耀变体为中微子源,开辟级联探测新通道。

摘要:

高能天体物理中微子的存在已被明确证实,但其来源仍然难以捉摸。IceCube报告了一个290 TeV中微子与TXS 0506+056的伽马射线耀斑相关联,TXS 0506+056是一个具有指向我们的致密射电喷流的活动星系核。后来,射电亮耀变体被证明与IceCube中微子事件具有高度统计显著性关联。这些关联尚未得到独立实验数据的证实。在此,我们报告了2021年4月新型Baikal Gigaton Volume Detector(Baikal-GVD)探测到的一个罕见中微子事件,其估计能量为224±75 TeV,来自TXS 0506+056方向。该事件是Baikal-GVD中微子望远镜迄今探测到的来自地平线以下方向的最高能量级联。这一结果支持了先前关于射电耀变体(尤其是TXS 0506+056)是高能中微子来源的推测,并为中微子天文学开辟了级联通道。

英文摘要:

The existence of high-energy astrophysical neutrinos has been unambiguously demonstrated, but their sources remain elusive. IceCube reported an association of a 290-TeV neutrino with a gamma-ray flare of TXS 0506+056, an active galactic nucleus with a compact radio jet pointing to us. Later, radio-bright blazars were shown to be associated with IceCube neutrino events with high statistical significance. These associations remained unconfirmed with the data of independent experiments. Here we report on the detection of a rare neutrino event with the estimated energy of 224+-75 TeV from the direction of TXS 0506+056 by the new Baikal Gigaton Volume Detector (Baikal-GVD) in April 2021. This event is the highest-energy cascade detected so far by the Baikal-GVD neutrino telescope from a direction below horizon. The result supports previous suggestions that radio blazars in general, and TXS 0506+056 in particular, are the sources of high-energy neutrinos, and opens up the cascade channel for the neutrino astronomy.

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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