寻找Milky Way的未知暗物质卫星
Search for Unknown Dark Matter Satellites of the Milky Way
摘要：
我们提出了一个搜索银河系暗物质（DM）卫星使用大面积望远镜（LAT）。基于Lambda-CDM宇宙学模型的N体模拟预测了大量尚未观测到的银河系DM卫星。这些卫星可能通过DM粒子的自湮灭产生伽马射线。一些DM卫星预计有硬伽马射线光谱，有限的角度范围，并缺乏其他波长的对应物。我们寻找具有这些特征的LAT源。我们发现没有候选DM卫星匹配这些标准在一年的LAT数据和解释这一结果的背景下，N体模拟。
英文摘要：
We present a search for Galactic dark matter (DM) satellites using the Large Area Telescope (LAT). N-body simulations based on the Lambda-CDM model of cosmology predict a large number of as yet unobserved Galactic DM satellites. These satellites could potentially produce gamma rays through the self-annihilation of DM particles. Some DM satellites are expected to have hard gamma-ray spectra, finite angular extents, and a lack of counterparts at other wavelengths. We searched for LAT sources with these characteristics. We found no candidate DM satellites matching these criteria in one year of LAT data and interpreted this result in the context of N-body simulations.
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