Dark matter effects on the properties of neutron stars: optical radii

TL;DR

This paper investigates how dark matter influences neutron star properties, especially their radii, using a combined nuclear and dark matter model to explore various stable stellar configurations.

Contribution

It introduces a comprehensive model combining nuclear matter and dark matter to analyze stable neutron star configurations and their observable radii.

Findings

Diverse stable dark neutron star configurations identified.

Dark matter significantly affects neutron star radii.

The model predicts observable differences in star properties due to dark matter.

Abstract

We study the effects of dark matter on the properties of neutron stars by employing a DM-admixed model. The Brueckner-Hartree-Fock theory with realistic three-body forces and a generic bosonic self-interacting dark matter model describe the equations of state for nuclear matter and DM, respectively. We study the complete set of stable dark neutron stars and in particular the observable radii of these objects. A rich variety of stellar configurations is found and discussed in detail.