Indirect Dark Matter Searches with VERITAS

Indirect Dark Matter Searches with VERITAS
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使用 VERITAS 进行间接暗物质搜索

DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
F. C. Collaboration
F. C. Collaboration
中科院分区：
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文献类型：
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作者：
R. Wagner;F. C. Collaboration

文献摘要

被引文献

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天体物理学暗物质（DM）的主要候选者是质量在50 GeV到大于10 TeV范围内的大质量粒子，其相互作用截面在弱尺度上。这种粒子在高DM密度的天体物理区域中的自湮灭可以产生稳定的次级粒子，包括能量高达DM粒子质量的非常高能量的伽马射线。本星系群中的矮球状星系由于距离较近且DM含量较大，是寻找DM湮灭特征的重要目标。我们报告的伽马射线观测与甚高能辐射成像望远镜阵列系统（VERITAS）的几个矮星系的目标，以及球状星团M5和本星系团M32和M33。我们讨论了这些测量的DM粒子模型的参数空间的影响。
A leading candidate for astrophysical dark matter (DM) is a massive particle with a mass in the range from 50 GeV to greater than 10 TeV and an interaction cross section on the weak scale. The self-annihilation of such particles in astrophysical regions of high DM density can generate stable secondary particles including very high energy gamma-rays with energies up to the DM particle mass. Dwarf spheroidal galaxies of the Local Group are attractive targets to search for the annihilation signature of DM due to their proximity and large DM content. We report on gamma-ray observations taken with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) of several dwarf galaxy targets as well as the globular cluster M5 and the local group galaxies M32 and M33. We discuss the implications of these measurements for the parameter space of DM particle models.