Observation of ultra high energy cosmic rays from space: Status and perspectives
Observation of ultra high energy cosmic rays from space: Status and perspectives
复制标题
从太空观测超高能宇宙射线：现状和前景
DOI：
10.1093/ptep/ptx169
复制
发表时间：
2017
影响因子：
3.5
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
Casolino;M.;et al.
超高能宇宙射线（uhecr）的研究为探测目前人造加速器无法探测的能量提供了独特的可能性。近年来，人们对这些粒子的一些特性已经有所了解，但由于它们的通量极低，它们的起源、性质和加速机制仍然不清楚。天基观测有可能增加统计数据，最多可增加几个数量级，并将能够覆盖整个天空，从而可以对光谱和到达方向进行直接比较。一个比皮埃尔·奥格天文台曝光数倍的探测器将能够澄清观测到的南北天空差异，确认TA热点的存在，并高精度地测量多极各向异性。为了实现这一目标，许多新技术——从光学到传感器、前端和读出电子——已经发展了多年。本文介绍了迄今为止的进展和取得的成果，并讨论了空间超hecr物理观测的前景。
The study of ultra high energy cosmic rays (UHECRs) offers unique possibilities to probe the energies currently inaccessible by man-made accelerators. Recent years have shed light on several characteristics of these particles, but—due to their extremely low flux—their origin, nature, and acceleration mechanisms are still unclear. Space-based observations have the potential for an increase in statistics, up to several orders of magnitude, and would be able to cover the whole sky, allowing for a direct comparison of spectra and direction of arrival. A detector with the exposure of a few times that of the Pierre Auger Observatory would be able to clarify the observed differences between the northern and southern skies, confirm the existence of TA hot spot, and measure multipolar anisotropies with high precision. A number of novel technologies—from optics to sensors, front-end and read-out electronics—have been developed over the years to achieve this goal. In this paper we describe the progress and results obtained so far and discuss the perspectives of UHECR physics observation from space.