2023/05/01 by A. S. Dmitriev, Dmitriev, A. S., D. G. Levkov +5 · 4 citations
Physics and Astronomy · #Astro and Planetary Science
paper · pdf · doi:10.48550/arxiv.2305.01005
We analytically solve the problem of Bose star growth in the bath of gravitationally interacting particles. We find that after nucleation of this object the bath is described by a self-similar solution of kinetic equation. Together with the conservation laws, this fixes mass evolution of the Bose star. Our theory explains, in particular, the slowdown of the star growth at a certain "core-halo" mass, but also predicts formation of heavier and lighter objects in magistral dark matter models. The developed "adiabatic" approach to self-similarity may be of interest for kinetic theory in general.