Gravitational Focusing and Substructure Effects on the Rate Modulation in Direct Dark Matter Searches
High Energy Physics - Phenomenology
2015-09-09 v2 Cosmology and Nongalactic Astrophysics
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.
Keywords
Cite
@article{arxiv.1505.07538,
title = {Gravitational Focusing and Substructure Effects on the Rate Modulation in Direct Dark Matter Searches},
author = {Eugenio Del Nobile and Graciela B. Gelmini and Samuel J. Witte},
journal= {arXiv preprint arXiv:1505.07538},
year = {2015}
}
Comments
16 pages, 9 figures. v2: A section with estimates of the required number of events has been added