HALO DENSITY PROFILES CONSISTENT WITH ASYMMETRIC M-B VELOCITY DISTRIBUTIONS: IMPLICATIONS ON DIRECT DARK MATTER SEARCHES
- University of Ioannina, Ioannina, GR 45110 (Greece), E-mail: vergados@cc.uoi.gr
In this paper, we obtain the weakly interacting, massive particle (WIMP) velocity distribution in our vicinity starting from spherically symmetric WIMP density profiles in a self-consistent way by employing the Eddington approach. By adding a reasonable angular-momentum-dependent term in the expression of the energy, we obtain axially symmetric WIMP velocity distributions as well. We find that some density profiles lead to approximate Maxwell-Boltzmann distributions, which are automatically defined in a finite domain, i.e., the escape velocity need not be put by hand. The role of such distributions in obtaining the direct WIMP detection rates, including the modulation, is studied in some detail and, in particular, the role of the asymmetry is explored.
- OSTI ID:
- 21255701
- Journal Information:
- Astronomical Journal (New York, N.Y. Online), Vol. 138, Issue 1; Other Information: DOI: 10.1088/0004-6256/138/1/76; Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
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