The Effects of the Sagittarius Dwarf Tidal Stream on Dark Matter Detectors

Details The Effects of the Sagittarius Dwarf Tidal Stream on Dark Matter Detectors The Effects of the Sagittarius Dwarf Tidal Stream on Dark Matter Detectors

2003-10-13

arxiv.org/abs/astro-ph/0310334v3

Phys.Rev.Lett.92:111301,2004

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures. Replaced with version to appear in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.92.111301

The Sagittarius dwarf tidal stream may be showering dark matter onto the solar neighborhood, which can change the results and interpretation of WIMP direct detection experiments. 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.

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