Destruction of axion miniclusters in the Galaxy

Understand

Previously, it has been established that axion dark matter (DM) is clustered to form clumps (axion miniclusters) with masses $M\sim10^{-12}M_\odot$.

• The passages of such clumps through the Earth are very rare events occurring once in $10^5$ years.
• It has also been shown that the Earth's passage through DM streams, which are the remnants of clumps destroyed by tidal gravitational forces from Galactic stars, is a much more probable event occurring once in several years.
• In this paper we have performed details calculations of the destruction of miniclusters by taking into account their distribution in orbits in the Galactic halo.