Mini-EUSO测量对天基uhecr观测的意义

M. Bertaina, D. Barghini, M. Battisti, A. Belov, M. Bianciotto, F. Bisconti, C. Blaksley, S. Blin, K. Bolmgren, G. Cambiè, F. Capel, M. Casolino, I. Churilo, M. Crisconio, C. de La Taille, T. Ebisuzaki, J. Eser, F. Fenu, G. Filippatos, M. Franceschi, C. Fuglesang, A. Golzio, P. Gorodetzky, F. Kajino, H. Kasuga, P. Klimov, V. Kungel, V. Kuznetsov, M. Manfrin, L. Marcelli, G. Mascetti, Włodzimierz Marszał, M. Mignone, H. Miyamoto, A. Murashov, T. Napolitano, H. Ohmori, A. Olinto, E. Parizot, P. Picozza, L. Piotrowski, Z. Plebaniak, G. Prévôt, E. Reali, M. Ricci, G. Romoli, N. Sakaki, S. Sharakin, K. Shinozaki, J. Szabelski, Y. Takizawa, G. Valentini, M. Vrábel, L. Wiencke, M. Zotov
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引用次数: 1

摘要

Mini-EUSO是JEM-EUSO项目在国际空间站上的第一个任务。它于2019年发射,目前位于国际空间站的俄罗斯部分(星号舱),从一个面向谷底的紫外线透明窗口观察我们的星球。该仪器基于原始JEM-EUSO任务的概念,由一个光学系统组成,采用两个菲涅耳透镜和一个由36个多阳极光电倍增管组成的焦面,每个管64个通道,总共2304个通道,单光子计数灵敏度和44°× 44°的整体视野。Mini-EUSO可以在近紫外范围内(主要在290 ~ 430 nm之间)绘制夜间地球地图,空间分辨率约为6.3 km,时间分辨率分别为2.5µ、320µs和41 ms。小型euso观测对于更好地评估天基探测器在研究超高能量宇宙射线(uhecr)方面的潜力(如K-EUSO和POEMMA)非常重要。在这篇文章中,我们把注意力集中在紫外线测量、云的观测以及Mini-EUSO以最短的时间分辨率触发的某些类别的事件上。我们将它们放在从太空进行的UHECR观测的背景下,即对大范围空气阵雨的暴露和敏感性的估计。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Implications of Mini-EUSO measurements for a space-based observation of UHECRs
Mini-EUSO is the first mission of the JEM-EUSO program on board the International Space Station. It was launched in 2019 and it is currently located in the Russian section (Zvezda module) of the station and viewing our planet from a nadir-facing UV-transparent window. The instrument is based on the concept of the original JEM-EUSO mission and consists of an optical system employing two Fresnel lenses and a focal surface composed of 36 Multi-Anode Photomultiplier tubes, 64 channels each, for a total of 2304 channels with single photon counting sensitivity and an overall field of view of 44° × 44°. Mini-EUSO can map the night-time Earth in the near UV range (predominantly between 290 nm and 430 nm), with a spatial resolution of about 6.3 km and different temporal resolutions of 2.5 µ, 320 µs and 41 ms. Mini-EUSO observations are extremely important to better assess the potential of a space-based detector in studying Ultra-High Energy Cosmic Rays (UHECRs) such as K-EUSO and POEMMA. In this contribution we focus the attention on UV measurements, the observation of clouds and of certain categories of events that Mini-EUSO triggers with the shortest temporal resolution. We place them in the context of UHECR observations from space, namely the estimation of exposure and sensitivity to Extensive Air Showers.
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