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arXiv 2105.03255astro-ph.IMastro-ph.HE
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利用亚轨道和轨道高度直接观测的Cosmic Ray大范围空气簇射模拟光学切伦科夫信号

Modeling the Optical Cherenkov Signals by Cosmic Ray Extensive Air Showers Directly Observed from Sub-Orbital and Orbital Altitudes

Austin Cummings, Roberto Aloisio, Johannes Eser, John Krizmanic

摘要:

今后在亚轨道和轨道高度观测地球大气层的基础上进行的实验计划包括光学切伦科夫照相机,以观测高能宇宙辐射通过与地球及其大气层相互作用而产生的大范围空气簇射。正如其他地方所讨论的,特别相关的是由天体物理中微子掠过地球并在地球上相互作用而引发的向上移动的簇射的情况。切伦科夫相机,通过观察地球的边缘,也可以探测到能量从小于一个PeV到最高能量(几十个EeV)的宇宙射线。使用定制的计算方案,以确定预期的光学切伦科夫信号,从这些高能宇宙射线,我们估计的灵敏度和事件率的球载和卫星为基础的仪器,我们的分析集中在极端宇宙空间天文台搭载超压气球2(EUSO-SPB 2)和极端多信使天体物理学探测器(POEMMA)实验。我们发现预期的事件率大于每小时的实验实时时间的数百个事件,从而能够从亚轨道和轨道高度对切伦科夫探测技术进行有希望的全面测试,以及可以用于理解仪器响应的保证信号。

英文摘要:

Future experiments based on the observation of Earth's atmosphere from sub-orbital and orbital altitudes plan to include optical Cherenkov cameras to observe extensive air showers produced by high-energy cosmic radiation via its interaction with both the Earth and its atmosphere. As discussed elsewhere, particularly relevant is the case of upward-moving showers initiated by astrophysical neutrinos skimming and interacting in the Earth. The Cherenkov cameras, by looking above Earth's limb, can also detect cosmic rays with energies starting from less than a PeV up to the highest energies (tens of EeV). Using a customized computation scheme to determine the expected optical Cherenkov signal from these high-energy cosmic rays, we estimate the sensitivity and event rate for balloon-borne and satellite-based instruments, focusing our analysis on the Extreme Universe Space Observatory aboard a Super Pressure Balloon 2 (EUSO-SPB2) and the Probe of Extreme Multi-Messenger Astrophysics (POEMMA) experiments. We find the expected event rates to be larger than hundreds of events per hour of experimental live time, enabling a promising overall test of the Cherenkov detection technique from sub-orbital and orbital altitudes as well as a guaranteed signal that can be used for understanding the response of the instrument.

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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