Connecting neutron star observations to the high density equation of state of quasi-particle model

TL;DR

This paper links neutron star observations to the high-density equation of state using a quasi-particle model, constraining model parameters based on observed star masses.

Contribution

It introduces a quasi-particle model for the EOS of quark and hybrid stars and constrains its parameters using neutron star mass observations.

Findings

Constraints on quasi-particle model parameters from neutron star mass data

EOS models for pure quark and hybrid stars compatible with observations

Implications for high-density matter in neutron stars

Abstract

The observation of $1.97\pm0.04$ solar-mass neutron-like star gives constraint on the equation of state (EOS) of cold, condensed matter. In this paper, the EOS for both pure quark star and hybrid star with a quark core described by quasi-particle model are considered. The parameters of quasi-particle model which affect the mass of both quark star and hybrid star can be constrained by the observation.