The evolution of the magnetic fields of neutron stars |
| |
Authors: | Dipankar Bhattacharya |
| |
Institution: | (1) Raman Research Institute, 560 080 Bangalore |
| |
Abstract: | Observational evidence, and theoretical models of the magnetic field evolution of neutron stars is discussed. Observational
data indicates that the magnetic field of a neutron star decays significantly only if it has been a member of a close interacting
binary. Theoretically, the magnetic field evolution has been related to the processing of a neutron star in a binary system
through the spin evolution of the neutron star, and also through the accretion of matter on the neutron star surface. I describe
two specific models, one in which magnetic flux is expelled from the superconducting core during spin-down, via a copuling
between Abrikosov fluxoids and Onsager-Feynman vortices; and another in which the compression and heating of the stellar crust
by the accreted mass drastically reduces the ohmic decay time scale of a magnetic field configuration confined entirely to
the crust. General remarks about the behaviour of the crustal field under ohmic diffusion are also made. |
| |
Keywords: | Neutron Stars Pulsara Magnetic Field |
本文献已被 SpringerLink 等数据库收录! |
|