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

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  • 21 October 2003
Abstract
The Sagittarius dwarf tidal stream is raining dark matter onto the solar system, and will almost certainly 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 a step-like feature in the energy recoil spectrum that is annually modulated. The total count rate in detectors is then not a cosine curve in time, and peaks at a different time of year than the standard case.

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