An overview of the JEM-EUSO program and results
An overview of the JEM-EUSO program and results
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JEM-EUSO 计划和结果概述
DOI：
10.22323/1.395.0406
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
M. Bertaina
中科院分区：
文献类型：
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作者：
M. Bertaina
UHECR（超高能宇宙射线）领域和对宇宙中粒子加速的理解，作为宇宙中最强大的源的行为的关键因素，对于天体粒子物理学和基础物理学都具有极其重要的意义，并将提高我们对宇宙的总体理解。目前的主要目标是确定UHECR的来源及其组成。为此，需要增加统计数据。用于UHECR研究的天基探测器具有曝光量很大和均匀覆盖天球的优点。JEM-EUSO计划的目的是将UHECR的研究带到太空。观测原理是基于检测地球大气中广泛空气簇射（EAS）激发的大气氮各向同性荧光发射的紫外光以及从地球表面或密集云顶反射的前向切伦科夫辐射。除了UHECR研究的主要目标外，JEMEUSO还将进行几项次级研究，因为这些仪器具有独特的能力，能够以1微秒左右的极端时间分辨率检测非常微弱的紫外信号：流星，瞬态发光事件（TLE），生物发光，人类产生的紫外光地图，寻找奇异夸克物质（SQM）和高能中微子等等。JEM-EUSO计划包括从地面（EUSO-TA），平流层气球（EUSO-Balloon，EUSO-SPB 1，EUSO-SPB 2）和空间（TUS，Mini-EUSO）使用荧光探测器的几个任务，以演示从空间进行的UHECR观测，并准备大型任务K-EUSO和POEMMA。回顾了该计划的现状，迄今为止不同项目所取得的主要成果，以及不久的将来的前景。
The field of UHECRs (Ultra-High energy cosmic Rays) and the understanding of particle acceleration in the cosmos, as a key ingredient to the behaviour of the most powerful sources in the universe, is of outmost importance for astroparticle physics as well as for fundamental physics and will improve our general understanding of the universe. The current main goals are to identify sources of UHECRs and their composition. For this, increased statistics is required. A space-based detector for UHECR research has the advantage of a very large exposure and a uniform coverage of the celestial sphere. The aim of the JEM-EUSO program is to bring the study of UHECRs to space. The principle of observation is based on the detection of UV light emitted by isotropic fluorescence of atmospheric nitrogen excited by the Extensive Air Showers (EAS) in the Earth's atmosphere and forward-beamed Cherenkov radiation reflected from the Earth's surface or dense cloud tops. In addition to the prime objective of UHECR studies, JEMEUSO will do several secondary studies due to the instruments' unique capacity of detecting very weak UV-signals with extreme time-resolution around 1 microsecond: meteors, Transient Luminous Events (TLE), bioluminescence, maps of human generated UV-light, searches for Strange Quark Matter (SQM) and high-energy neutrinos, and more. The JEM-EUSO program includes several missions from ground (EUSO-TA), from stratospheric balloons (EUSO-Balloon, EUSO-SPB1, EUSO-SPB2), and from space (TUS, Mini-EUSO) employing fluorescence detectors to demonstrate the UHECR observation from space and prepare the large size missions K-EUSO and POEMMA. A review of the current status of the program, the key results obtained so far by the different projects, and the perspectives for the near future are presented.
DOI：
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发表时间：
2019
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影响因子：
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作者：
Wang;C.;Hong;C.;Saji;N.&Liu;X.;川原功司;柳朱燕;Noburo Saji
通讯作者：
Noburo Saji
杜克大学/马里兰大学（美国）
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