费米探测暗物质湮灭线
Detecting Dark Matter annihilation lines with Fermi
摘要：
暗物质构成了当今物理学中最有趣但迄今尚未解决的问题之一。在标准模型的许多扩展中，都预言了稳定的弱相互作用大质量粒子（WIMP）的存在。WIMP是一个很好的暗物质候选粒子，最有趣的场景之一包括两个WIMP湮灭成两个伽马射线。如果假设WIMP是非相对论性的，那么产生的光子将具有与WIMP质量相等的能量，并且在能谱中表现为单色谱线。这种类型的信号将代表一个“吸烟枪”的暗物质，因为没有其他已知的天体物理过程应该能够产生it. In这些程序中，我们给出了不同的方法来寻找暗物质线的费米-LAT合作所追求的概述和所涉及的各种挑战。
英文摘要：
Dark matter constitutes one of the most intriguing but so far unresolved issues in physics today. In many extensions of the Standard Model the existence of a stable Weakly Interacting Massive Particle (WIMP) is predicted. The WIMP is an excellent dark matter particle candidate and one of the most interesting scenarios include an annihilation of two WIMPs into two gamma-rays. If the WIMPs are assumed to be non-relativistic, the resulting photons will both have an energy equal to the mass of the WIMP and manifest themselves as a monochromatic spectral line in the energy spectrum. This type of signal would represent a "smoking gun" for dark matter, since no other known astrophysical process should be able to produce it. In these proceedings we give an overview of the different approaches to a search for dark matter lines that the Fermi-LAT collaboration is pursuing and the various challenges involved.
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