The impact of the phase-space density on the indirect detection of dark matter

Journal Article · Sun Sep 01 00:00:00 EDT 2013 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2013/09/005· OSTI ID:22282752

Ferrer, Francesc; Hunter, Daniel R. ^[1]

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1. Physics Department and McDonnell Center for the Space Sciences, Washington University, St Louis, MO 63130 (United States)

We study the indirect detection of dark matter when the local dark matter velocity distribution depends upon position, as expected for the Milky Way and its dwarf spheroidal satellites, and the annihilation cross-section is not purely s-wave. Using a phase-space distribution consistent with the dark matter density profile, we present estimates of cosmic and gamma-ray fluxes from dark matter annihilations. The expectations for the indirect detection of dark matter can differ significantly from the usual calculation that assumes that the velocity of the dark matter particles follows a Maxwell-Boltzmann distribution.

• OSTI ID: 22282752
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 09; 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
ANNIHILATION
ASTROPHYSICS
BOLTZMANN STATISTICS
CROSS SECTIONS
DENSITY
GAMMA RADIATION
MILKY WAY
NONLUMINOUS MATTER
PHASE SPACE
S WAVES