Hybrid magnetized stars in the context of multi-messenger astronomy

TL;DR

This paper models hybrid neutron stars with quark cores and strong magnetic fields, incorporating particle magnetic moments, to explain recent astrophysical observations of mass, radius, and tidal deformability.

Contribution

It introduces a comprehensive model of magnetized hybrid stars including anomalous magnetic moments, analyzing their stability and observational consistency.

Findings

Models satisfy observational constraints on mass and radius.

Magnetic fields and phase transitions influence star stability.

Results align with recent gravitational wave and pulsar data.

Abstract

The most recent detections of LIGO/Virgo and NICER have placed strong constraints on neutron stars' properties. In this work, we study neutron stars modeling them as hybrid stars, compact objects with a quark matter core surrounded by layers of hadronic matter. In addition, we consider the presence of strong magnetic fields, motivated by magnetars detection, like the recently discovered Swift J1818.0-1607. We incorporate the effects of the anomalous magnetic moment of the constituent particles into the equation of state of dense matter and analyze the implications of different hadron-quark phase transitions on the dynamic stability of these compact objects. This study shows that the constraints on the mass, radius, and tidal deformability, imposed by observations of massive pulsars and gravitational waves can be satisfied within the framework of our model.