Hybrid Stars with Hyperons and Strange Quark Matter

TL;DR

This paper investigates the structure of hybrid stars with cores containing strange quark matter, using specific models for hadronic and quark phases, and compares the results with observational constraints.

Contribution

It introduces a combined modeling approach for hybrid stars with hyperons and strange quark matter, analyzing phase transitions with Gibbs construction.

Findings

Hybrid star models satisfy observational constraints.

Phase transition occurs at specific densities.

Strange quark matter influences star properties.

Abstract

We consider the possibility of having hybrid stars with a phase transition from hadrons into strange matter at the core of a neutron star in b equilibrium. For the hadron phase equation of state (EoS) the quark-meson coupling model is used, while the MIT bag model is used to describe the strange matter phase. The phase transition is treated using the Gibbs construction method and results are calculated and checked against the observational constaints imposed on the EoS. The results are also compared with the hadronic EoS including hyperons, F-QMC700