Gravitational Focusing of Low-Velocity Dark Matter on the Earth's Surface
arXiv:2005.08252
Abstract
We show that the Earth acts as a high-efficiency gravitational collector of low-velocity flow of dark matter (DM). The focal point appears on the Earth's surface, when the DM flow speed is about 17 km/s with respect to the geo-center. We discuss diurnal modulation of the local DM density influenced by the Earth's gravity. We also touch upon similar effects on galactic and solar system objects.
arXiv commentTo appear in Galaxies: special issue on Debate on the Dark Matter; 8 pages, 7 figures
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