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arXiv 1310.2695astro-ph.HEhep-ex
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用γ射线间接探测暗物质

Indirect Detection of Dark Matter with gamma rays

Stefan Funk

摘要:

宇宙中构成暗物质的大部分质量是由什么构成的,这个问题的细节至今仍然是宇宙学和粒子物理学的主要难题之一--距离第一次观测到暗物质的迹象已经过去了80年。今天,人们普遍认为暗物质是存在的,而且它很可能是由基本粒子组成的--它们是弱相互作用的大质量粒子(弱相互作用大质量粒子)。尽管暗物质在我们对宇宙学的理解中非常重要,但迄今为止,对这些粒子的探测仍然是难以捉摸的。它们的主要性质,如质量和相互作用截面仍然是未知的。间接探测寻找的是WIMP湮灭或衰变的产物。这通常是通过观测伽马射线光子或宇宙射线来完成的。Fermi-LAT、H.E.S.S. MAGIC和VERITAS与未来的切伦科夫望远镜阵列(CTA)相结合,将为其他搜索技术提供重要的补充约束。考虑到所有搜索技术的预期敏感性,我们正处于WIMP情景面临严格测试的阶段,可以预期WIMP要么被检测到,要么情景将受到严重限制,必须重新考虑。从这个意义上说,我们正处于“发现的门槛”。本文将对暗物质(WIMP)粒子的间接搜寻的现状和未来展望作一综述。

英文摘要:

The details of what constitutes the majority of the mass that makes up dark matter in the Universe remains one of the prime puzzles of cosmology and particle physics today - eighty years after the first observational indications. Today, it is widely accepted that dark matter exists and that it is very likely composed of elementary particles - that are weakly interacting and massive (WIMPs for Weakly Interacting Massive Particles). As important as dark matter is in our understanding of cosmology, the detection of these particles has so far been elusive. Their primary properties such as mass and interaction cross sections are still unknown. Indirect detection searches for the products of WIMP annihilation or decay. This is generally done through observations of gamma-ray photons or cosmic rays. Instruments such as the Fermi-LAT, H.E.S.S., MAGIC and VERITAS, combined with the future Cherenkov Telescope Array (CTA) will provide important and complementary constraints to other search techniques. Given the expected sensitivities of all search techniques, we are at a stage where the WIMP scenario is facing stringent tests and it can be expected that WIMPs will be either be detected or the scenario will be so severely constrained that it will have to be re-thought. In this sense we are on the "Threshold of Discovery". In this article, I will give a general overview over the current status and the future expectations for indirect searches for dark matter (WIMP) particles.

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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