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Gravitational Focusing of Low-Velocity Dark Matter on the Earth's Surface
Published 17 May 2020 in astro-ph.HE and astro-ph.GA | (2005.08252v2)
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.
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