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arXiv 1101.1909astro-ph.HE
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JEM-EUSO的使命

The JEM-EUSO Mission

Toshikazu Ebisuzaki

摘要:

JEM-EUSO飞行任务探索100 EeV以上极能宇宙射线的起源,并通过观测其到达方向和能量探索基本物理学的极限。它的设计目标是实现大于100万平方千米/年的曝光量,以开辟一条新的粒子天文学通道。这个直径约为2.5米的超宽视场(60度)望远镜从太空向下观察夜空,以探测EECR产生的巨大空气簇射发射的近紫外光子(330- 400 nm,荧光和切伦科夫光子)。包含500多个事件的到达方向图将告诉我们EECR的起源,并允许我们识别已知天体的最近EECR源。这将使他们能够在其他天文频道进行检查。这可能会导致对加速机制的理解,也许会在天体物理学和/或基础物理学中产生发现。空间分辨的单个源之间的能谱的比较将有助于澄清加速/发射机制,并最终确认Greisen-Zatsepin-Kuz'min过程,以验证Lorentz不变性直到γ~10^{11}。中性成分(中微子和伽马射线)也可以被检测到,如果它们的通量足够高。JEM-EUSO飞行任务计划于2015-2016财政年度左右由H2 B火箭发射,并由H2转移飞行器转移到国际空间站。它将附在“KIBO”的暴露设施外部实验平台上。

英文摘要:

The JEM-EUSO mission explores the origin of the extreme energy cosmic rays (EECRs) above 100 EeV and explores the limits of the fundamental physics through the observations of their arrival directions and energies. It is designed to achieve an exposure larger than 1 million km^2 sr year to open a new particle astronomy channel. This super-wide-field (60 degrees) telescope with a diameter of about 2.5 m looks down from space onto the night sky to detect near UV photons (330-400nm, both fluorescent and Cherenkov photons) emitted from the giant air showers produced by EECRs. The arrival direction map with more than five hundred events will tell us the origin of the EECRs and allow us to identify the nearest EECR sources with known astronomical objects. It will allow them to be examined in other astronomical channels. This is likely to lead to an understanding of the acceleration mechanisms, perhaps producing discoveries in astrophysics and/or fundamental physics. The comparison of the energy spectra among the spatially resolved individual sources will help to clarify the acceleration/emission mechanism, and also finally confirm the Greisen-Zatsepin-Kuz'min process for the validation of Lorentz invariance up to γ~10^{11}. Neutral components (neutrinos and gamma rays) can also be detected as well, if their fluxes are high enough. The JEM-EUSO mission is planned to be launched by a H2B rocket about JFY 2015-2016 and transferred to ISS by H2 Transfer Vehicle (HTV). It will be attached to the Exposed Facility external experiment platform of "KIBO".

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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