Mass-radius diagrams for a magnetized anisotropic neutron star

Authors

  • Josue Luis Villarin ⋅ PH National Institute of Physics, University of the Philippines-Diliman
  • Ian Vega ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We examine the relationship between the mass and radius of a magnetized neutron star with a polytropic equation of state $p_{r} = \kappa \rho^{2}$ and Bowers-Liang anisotropy. The mass we computed in the diagrams is the Tolman Whittaker mass, which is a proxy for the gravitational mass of an isolated object. The key effects of anisotropy and magnetic field are as follows: the mass grows with greater magnetic field and tangential pressures over the radial pressure at constant radii; stars with much stronger magnetic fields and tangential pressures may become unstable; and for each anisotropy, there is a critical magnetic field strength beyond which the stars lose stability. In most circumstances, the anisotropy has a higher effect on the mass of the star than the magnetic field.

Issue

Article ID

SPP-2024-PB-13

Section

Poster Session B (Complex Systems, Computational Physics, and Astrophysics)

Published

2024-06-28

How to Cite

[1]
JL Villarin and I Vega, Mass-radius diagrams for a magnetized anisotropic neutron star, Proceedings of the Samahang Pisika ng Pilipinas 42, SPP-2024-PB-13 (2024). URL: https://proceedings.spp-online.org/article/view/SPP-2024-PB-13.