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

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.

Authors:
; ;  [1]
  1. Department of Physics and Astronomy, UCLA,475 Portola Plaza, Los Angeles, CA 90095 (United States)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22458439
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 08; Other Information: PUBLISHER-ID: JCAP08(2015)041; OAI: oai:repo.scoap3.org:11444; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FOCUSING; GRAVITATION; MODULATION; NONLUMINOUS MATTER; SIGNALS; SUN

Citation Formats

Nobile, Eugenio Del, Gelmini, Graciela B., and Witte, Samuel J.. Gravitational focusing and substructure effects on the rate modulation in direct dark matter searches. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/08/041.
Nobile, Eugenio Del, Gelmini, Graciela B., & Witte, Samuel J.. Gravitational focusing and substructure effects on the rate modulation in direct dark matter searches. United States. doi:10.1088/1475-7516/2015/08/041.
Nobile, Eugenio Del, Gelmini, Graciela B., and Witte, Samuel J.. Fri . "Gravitational focusing and substructure effects on the rate modulation in direct dark matter searches". United States. doi:10.1088/1475-7516/2015/08/041.
@article{osti_22458439,
title = {Gravitational focusing and substructure effects on the rate modulation in direct dark matter searches},
author = {Nobile, Eugenio Del and Gelmini, Graciela B. and Witte, Samuel J.},
abstractNote = {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.},
doi = {10.1088/1475-7516/2015/08/041},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 08,
volume = 2015,
place = {United States},
year = {Fri Aug 21 00:00:00 EDT 2015},
month = {Fri Aug 21 00:00:00 EDT 2015}
}