Properties and Stability of Hybrid Stars

TL;DR

This paper explores how the presence of hyperons and quarks affects neutron star properties, stability, and cooling behavior, especially in light of recent observations of massive pulsars and neutron star cooling data.

Contribution

It provides an analysis of exotic particles inside neutron stars and their impact on star stability and thermal evolution, considering recent observational constraints.

Findings

Hyperons and quarks influence neutron star mass and stability.

The study offers explanations for the observed cooling curve of Cas A.

It discusses the compatibility of exotic matter with two-solar mass pulsars.

Abstract

We discuss the properties of neutron stars and their modifications due to the occurrence of hyperons and quarks in the core of the star. More specifically, we consider the general problem of exotic particles inside compact stars in light of the observed two-solar mass pulsar. In addition, we investigate neutron star cooling and a possible explanation of the recently measured cooling curve of the neutron star in the supernova remnant Cas A.