Formation of Solitonic Stars Through Gravitational Cooling

TL;DR

This paper investigates how solitonic bosonic stars can form via gravitational cooling, exploring their potential abundance and implications for dark matter candidates like axions.

Contribution

It introduces a dissipationless cooling mechanism for forming bosonic stars and discusses its implications for dark matter and astrophysics.

Findings

Bosonic stars can form through gravitational cooling without dissipation.

The mechanism suggests a potentially high abundance of bosonic stars in the universe.

Results may challenge the viability of axions as dark matter candidates.

Abstract

We studied the formation of compact bosonic objects through a dissipationless cooling mechanism. Implications of the existence of this mechanism are discussed, including the abundance of bosonic stars in the universe, and the possibility of ruling out the axion as a dark matter candidate.