Fine Structure of Dark Matter Halos and its Effect on Terrestrial Detection Experiments

Details Fine Structure of Dark Matter Halos and its Effect on Terrestrial Detection Experiments Fine Structure of Dark Matter Halos and its Effect on Terrestrial Detection Experiments

2003-01-15

arxiv.org/abs/astro-ph/0301301v1

Phys.Rev.Lett. 90 (2003) 211301

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.90.211301

Terrestrial dark matter detection experiments probe the velocity-space distribution of dark matter particles in the vicinity of the Earth. We present a novel method, to be used in conjunction with standard cosmological simulations of hierarchical clustering, that allows one to extract a truly local velocity-space distribution in exquisite detail. Preliminary results suggest a new picture for this distribution which is decidedly non-Maxwellian but instead is characterized by randomly positioned peaks in velocity space. We discuss the implications of these results for both WIMP and axion detection experiments.

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