Magnetic field dissipation in neutron star cores

by Dr. Dmitry Ofengeim Jr.

HUJI

at Astrophysics and Cosmology Seminar

Wed, 29 Mar 2023, 11:10
Sacta-Rashi Building for Physics (54), room 207

Abstract

Neutron stars are one of the most extreme types of objects in the modern Universe. They have masses about 1−2 solar masses and radii about 10−15 km. This makes them very compact stars with extremely strong gravitational fields. Density of their interiors exceeds the density of atomic nuclei by several times. Magnetic fields of neutron stars are in the range 10^8−10^15 G on the surface and possibly larger inside. Evolution of magnetic fields is thought to be a source of various observational phenomena related to these stars. It is well studied in the outer layers of the neutron star (the crust). Study of magnetic field evolution in the inner layers (the core) is a more complicated task due to much more complicated physics of the core matter. It can be superfluid, superconducting, and its transport microphysics is still poorly understood. However, there is significant progress in such studies in recent years, especially in assumption of the minimum beta-equilibrated composition of the core (neutrons, protons and electrons only). In this talk I describe the modern approach to magnetic field evolution in neutron star cores and show my recent results concerning a realistic core composition which includes muons.

Created on 26-03-2023 by Zitrin, Adi (zitrin)
Updaded on 26-03-2023 by Zitrin, Adi (zitrin)