Quark matter influence on observational properties of compact stars

TL;DR

This paper explores how quark matter inside compact stars affects their observable properties, including mass-radius relations and magnetic field behavior, with implications for understanding their internal composition.

Contribution

It analyzes the impact of quark matter on the structure and magnetic properties of compact stars, highlighting the role of quark condensation and superfluidity.

Findings

Quark matter influences the mass-radius relationship of compact stars.

Magnetic field behavior is affected by the presence of quark matter cores.

Quark condensation may lead to observable phenomena like slow-period precession.

Abstract

Densities in compact stars may be such that quarks are no longer confined in hadrons, but instead behave as weakly interacting particles. In this regime perturbative calculations are possible. Yet, due to high pressures and an attractive channel in the strong force, condensation of quarks in a superfluid state is likely. This can have interesting consequences for magnetic fields, especially in relation to the discovery of slow-period free precession in a compact star. In this proceedings there will be a discussion of the mass-radius relations of compact stars made from quark matter and magnetic field behaviour in compact stars with a quark matter core.