Gravitational focusing and substructure effects on the rate modulation in direct dark matter searches

Journal Article · Sat Aug 01 00:00:00 EDT 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/08/041· OSTI ID:22525548

Nobile, Eugenio Del; Gelmini, Graciela B.

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.

• OSTI ID: 22525548
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 08; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
FOCUSING
GRAVITATIONAL LENSES
MODULATION
NONLUMINOUS MATTER
SIGNALS
STARS
STREAMS
SUN