Gravitational Focusing of Low-Velocity Dark Matter on the Earth’s Surface

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...

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Bibliographic Details
Main Author: Yoshiaki Sofue
Format: Article
Language:English
Published: MDPI AG 2020-05-01
Series:Galaxies
Subjects:
Online Access:https://www.mdpi.com/2075-4434/8/2/42