The evolution of the magnetic fields of neutron stars

Bhattacharya, Dipankar (1995) The evolution of the magnetic fields of neutron stars Journal of Astrophysics and Astronomy, 16 (2). pp. 217-232. ISSN 0250-6335

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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.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Neutron Stars; Pulsara; Magnetic Field
ID Code:1806
Deposited On:08 Oct 2010 12:27
Last Modified:16 May 2016 12:51

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