Boson Stars from Self-Interacting Dark Matter

TL;DR

This paper explores the formation and properties of boson stars made of self-interacting dark matter, analyzing how different interactions affect their structure and maximum mass, with implications for dark matter models.

Contribution

It provides a detailed analysis of boson stars formed from self-interacting dark matter, including mass-radius relations and density profiles, addressing key issues in dark matter theory.

Findings

Self-interactions influence the mass and size of boson stars.

Maximum mass of boson stars depends on the nature of self-interactions.

Density profiles vary with interaction type and parameters.

Abstract

We study the possibility that self-interacting bosonic dark matter forms star-like objects. We study both the case of attractive and repulsive self-interactions, and we focus particularly in the parameter phase space where self-interactions can solve well standing problems of the collisionless dark matter paradigm. We find the mass radius relations for these dark matter bosonic stars, their density profile as well as the maximum mass they can support.