Strong Magnetic Field Effect on Radius of Neutron Stars

Ali Looei, Ali Mohammad; Moshfegh, Hamidreza

doi:10.22055/jrmbs.2022.17610

Strong Magnetic Field Effect on Radius of Neutron Stars

Document Type : Full length research Paper

Authors

Ali Mohammad Ali Looei ¹

Hamidreza Moshfegh ²

¹ Department of Physics, University of Tehran, Tehran, Iran

² Department of physics University of Tehran, Tehran, Iran

10.22055/jrmbs.2022.17610

Abstract

This study investigates the effects of intense magnetic field on Equation of State (EOS) and bulk properties of neutron stars (NS). We have used a variational many-body approach to obtain the EOS of core of NS and various models are considered as basic EOS of crust of neutron stars. In this study, we focused on Landau levels of electrons. It is shown that by increasing the magnetic field, the pressure of NS is increased. Finally, the mass-radius relation of a neutron star is extracted by solving the hydrostatic equilibrium equations. It is shown that the magnetic field does not have a considerable effect on maximum mass which is obtained 2.3M_ʘ by employing EOS in this study. Instead, by increasing the magnetic field inside the NS, the radius of star increases depending on the crust EOS.

Keywords

Neutron star

Magnetic field

Equation of State

Landau Levels

Subjects

nuclear physics

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