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arXiv · 1505.07538

Gravitational Focusing and Substructure Effects on the Rate Modulation in Direct Dark Matter Searches

Eugenio Del Nobile·Graciela B. Gelmini·Samuel J. Witte
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Abstract

We study how gravitational focusing (GF) of dark matter by the Sun affects the annual and biannual modulation of the expected signal in non-directional direct dark matter searches, in the presence of dark matter substructure in the local dark halo. We consider the Sagittarius stream and a possible dark disk, and show that GF suppresses some, but not all, of the distinguishing features that would characterize substructure of the dark halo were GF neglected.

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Eugenio Del Nobile, Graciela B. Gelmini, Samuel J. Witte. 2015-07-27. Gravitational Focusing and Substructure Effects on the Rate Modulation in Direct Dark Matter Searches. https://doi.org/10.1088/1475-7516%2F2015%2F08%2F041

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