Mass-radius relation for magnetized strange quark stars

TL;DR

This paper investigates how magnetic fields influence the stability and structure of strange quark matter and strange quark stars, revealing that magnetization enhances stability and affects their mass-radius relationship.

Contribution

It provides a detailed analysis of the stability of magnetized strange quark matter using the MIT bag model and derives the mass-radius relation for magnetized strange quark stars.

Findings

Magnetic fields lower the energy per baryon of strange quark matter.

Magnetized strange quark matter is more stable than non-magnetized SQM.

Magnetization affects the mass-radius relation of strange quark stars.

Abstract

We review the stability of magnetized strange quark matter (MSQM) within the phenomenological MIT bag model, taking into account the variation of the relevant input parameters, namely, the strange quark mass, baryon density, magnetic field and bag parameter. A comparison with magnetized asymmetric quark matter in $\beta$-equilibrium as well as with strange quark matter (SQM) is presented. We obtain that the energy per baryon for MSQM decreases as the magnetic field increases, and its minimum value at vanishing pressure is lower than the value found for SQM, which implies that MSQM is more stable than non-magnetized SQM. The mass-radius relation for magnetized strange quark stars is also obtained in this framework.