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arXiv 2108.01530astro-ph.HE
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用IceCube寻找小于1 TeV的中微子瞬变

Searching for Neutrino Transients Below 1 TeV with IceCube

Michael Larson, Jason Koskinen, Alex Pizzuto, Justin Vandenbroucke

摘要:

最近对来自新星的GeV伽马射线的观测导致了对这些物体的理解的范式转变。虽然现在人们相信冲击波对新星的能量收支有很大的贡献,但仍然不知道发射是强子还是轻子的起源。中微子可能是明确区分这两种情况的关键,尽管这种粒子的能量比中微子望远镜通常瞄准的要低得多。IceCube的密集仪器DeepCore子阵列提供了将观测阈值从1 TeV降至约10 GeV的能力。我们将讨论最近的测量在这个低能量的制度,一个新的子TeV的选择的细节,以及未来的搜索瞬态中微子发射的前景。

英文摘要:

Recent observations of GeV gamma-rays from novae have led to a paradigm shift in the understanding of these objects. While it is now believed that shocks contribute significantly to the energy budget of novae, it is still unknown if the emission is hadronic or leptonic in origin. Neutrinos could hold the key to definitively differentiating between these two scenarios, though the energies of such particles would be much lower than are typically targeted with neutrino telescopes. IceCube's densely instrumented DeepCore sub-array provides the ability to reduce the threshold for observation from 1 TeV down to approximately 10 GeV. We will discuss recent measurements in this low energy regime, details of a new sub-TeV selection, and prospects for future searches for transient neutrino emission.

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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