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arXiv 1402.6097astro-ph.IM
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JEM-EUSO望远镜的大气监测系统

The Atmospheric Monitoring system of the JEM-EUSO telescope

S. Toscano, A. Neronov, M. D. Rodríguez Frías, S. Wada

摘要:

国际空间站上的JEM-EUSO观测站是一项拟议的开拓性空间任务,专门用于研究超高能宇宙射线。JEM-EUSO望远镜以60 $^\circ$视场(FoV)向下观察地球大气层,将探测到UHECR引起的广泛空气簇射(EAS)穿透大气层的荧光和切伦科夫紫外辐射。重建初级宇宙线性质的能力取决于对EAS发展区域大气条件的精确测量。JEM-EUSO的大气监测系统将持续监测EAS候选地点以及EAS和JEM-EUSO望远镜之间的大气。利用紫外激光雷达和红外照相机,该系统将监测云量,并以$\sim$ 500米的精度检索云顶高度,以$Δτ\leq$ 0.15的精度和500米的分辨率检索大气光学深度剖面。本文将介绍JEM-EUSO的大气监测系统。在简要介绍该系统之后,将展示其根据卫星数据和模拟研究恢复云顶高度和光学深度以及重建阵雨廓线的能力。

英文摘要:

The JEM-EUSO observatory on board of the International Space Station (ISS) is a proposed pioneering space mission devoted to the investigation of Ultra High Energy Cosmic Rays (UHECRs). Looking downward at the earth's atmosphere with a 60$^\circ$ Field of View (FoV), the JEM-EUSO telescope will detect the fluorescence and Cherenkov UV emission from UHECR induced Extensive Air Showers (EAS) penetrating in the atmosphere. The capability of reconstructing the properties of the primary cosmic ray depends on the accurate measurement of the atmospheric conditions in the region of EAS development. The Atmospheric Monitoring system of JEM-EUSO will continuously monitor the atmosphere at the location of the EAS candidates and between the EAS and the JEM-EUSO telescope. With an UV LIDAR and an Infrared (IR) Camera the system will monitor the cloud cover and retrieve the cloud top altitude with an accuracy of $\sim$ 500 m and the optical depth profile of the atmosphere with an accuracy of $Δτ\leq$ 0.15 and a resolution of 500 m. In this contribution the Atmospheric Monitoring system of JEM-EUSO will be presented. After a brief description of the system, the capability to recover the cloud top height and optical depth and to reconstruct the shower profile will be shown based on satellites data and simulation studies.

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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