Gravitational Focusing of Low-Velocity Dark Matter on the Earth's Surface
High Energy Astrophysical Phenomena
2020-05-21 v2 Astrophysics of Galaxies
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.
Cite
@article{arxiv.2005.08252,
title = {Gravitational Focusing of Low-Velocity Dark Matter on the Earth's Surface},
author = {Yoshiaki Sofue},
journal= {arXiv preprint arXiv:2005.08252},
year = {2020}
}
Comments
To appear in Galaxies: special issue on Debate on the Dark Matter; 8 pages, 7 figures