Magnetized strange quark matter under stellar equilibrium and finite temperature

TL;DR

This paper investigates the effects of strong magnetic fields and finite temperature on strange quark matter within the MIT Bag model, revealing potential transverse collapse in quark stars and providing equations of state relevant for astrophysical objects.

Contribution

It introduces a temperature-dependent equation of state for magnetized strange quark matter considering pressure anisotropy and analyzes implications for quark star stability and structure.

Findings

Transversal pressure collapse occurs above ~10^{19} G magnetic field.

Finite temperature influences the energy per baryon and mass-radius relations.

Magnetic field and temperature conditions affect quark star stability.

Abstract

The strange quark matter under strong magnetic fields and finite temperatures is studied in the framework of the MIT Bag model. Matter under such conditions is believed to be present in the core of dense astrophysical objects, like Neutron Stars and more exotic compact objects like Quark Stars. In this study, the anisotropy of the pressure due to the presence of a strong magnetic field is taken into account and a temperature-dependent equation of state is obtained. In the strong field regime, the behavior of the transversal pressure suggests a transversal collapse of the quark and electron gasses for magnetic fields above $\sim10^{19}$ G, even at finite temperature, which can enhance as well the collapse. The corresponding behavior of the energy per baryon and the mass-radius relation for Quark Stars at different temperatures, fixed magnetic field and taking into account the baryon number conservation, $\beta$-equilibrium and charge neutrality, are as well reported.