Gravitational effects of condensate dark matter on compact stellar objects

TL;DR

This paper investigates how condensate dark matter influences the structure, stability, and observable properties of neutron stars, revealing significant alterations in their mass-radius relation and potential astrophysical implications.

Contribution

It introduces a model of condensate dark matter affecting neutron star structure using a two-fluid TOV approach, highlighting new effects on star stability and observable characteristics.

Findings

Condensate dark matter deforms neutron star mass-radius relations.

Maximum baryonic masses and radii of neutron stars are reduced.

Potential impact on gamma-ray burst rates at high redshift.

Abstract

We study the gravitational effect of non-self-annihilating dark matter on compact stellar objects. The self-interaction of condensate dark matter can give high accretion rate of dark matter onto stars. Phase transition to condensation state takes place when the dark matter density exceeds the critical value. A compact degenerate dark matter core is developed and alter the structure and stability of the stellar objects. Condensate dark matter admixed neutron stars is studied through the two-fuid TOV equation. The existence of condensate dark matter deforms the mass-radius relation of neutron stars and lower their maximum baryonic masses and radii. The possible effects on the Gamma-ray Burst rate in high redshift are discussed.