Effects of the Sagittarius dwarf tidal stream on dark matter detectors

被引:127
作者
Freese, K [1 ]
Gondolo, P
Newberg, HJ
Lewis, M
机构
[1] Univ Michigan, Michigan Ctr Theoret Phys, Ann Arbor, MI 48109 USA
[2] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA
[3] Rensselaer Polytech Inst, Dept Phys, Troy, NY 12180 USA
基金
美国国家科学基金会;
关键词
D O I
10.1103/PhysRevLett.92.111301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The Sagittarius dwarf tidal stream may be showering dark matter onto the solar neighborhood, which can change the results and interpretation of direct detection searches for weakly interacting massive particles (WIMPs). Stars in the stream may already have been detected in the solar neighborhood, and the dark matter in the stream is (0.3-25)% of the local density. Experiments should see an annually modulated steplike feature in the energy recoil spectrum that would be a smoking gun for WIMP detection. The total count rate in detectors is not a cosine curve in time and peaks at a different time of year than the standard case.
引用
收藏
页码:111301 / 1
页数:4
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