Effects of strong magnetic fields on the population of hyperon stars

TL;DR

This paper investigates how extremely strong magnetic fields influence the composition, equation of state, and mass-radius relationship of hyperon-rich neutron stars, revealing magnetic effects on particle populations and star structure.

Contribution

It introduces a multi-component model with density-dependent magnetic fields to analyze magnetic effects on hyperon star matter and their impact on star properties.

Findings

Magnetic fields significantly alter hyperon populations in neutron stars.

The equation of state is affected by Landau quantization under strong magnetic fields.

Mass-radius relations depend on magnetic field strength and interaction schemes.

Abstract

In this contribution we study the effects of strong magnetic fields on the particle population of neutron stars with hyperon degrees of freedom in their composition. The star matter is described by a multi-component model with parameterized baryon-meson interaction couplings. We study the magnetic effects on the equation of state (EoS) due to the Landau quantization, assuming a density dependent static magnetic field that reaches about $10^{19}\,G$ in the center of the star. The Tolman-Oppenheimer-Volkoff equations are solved in order to understand the dependence of the mass-radius relation and hyperon population on the magnetic field intensity assuming different interaction coupling schemes.