Expulsion of Magnetic Flux from the Core and Its Dissipation in the Crust of a Neutron Star

Details Expulsion of Magnetic Flux from the Core and Its Dissipation in the Crust of a Neutron Star Expulsion of Magnetic Flux from the Core and Its Dissipation in the Crust of a Neutron Star

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001astl...27..163k&link_type=abstract

Astronomy Letters, vol. 27, p. 163-170 (2001)

Astronomy and Astrophysics

Astronomy

2

Pulsars, Neutron Stars, Magnetic-Field Evolution

Scientific paper

We construct a model for the magnetic-field evolution of an isolated neutron star by assuming that its core is a type II superconductor and that the field penetrates the core in the form of magnetic lines (fluxoids). We consider the fluxoid expulsion from the core and the field dissipation in a conducting crust. The magnetic-field evolution is calculated self-consistently by taking into account the inverse effect of crustal magnetic line bending on the fluxoid velocity in the core. We consider the evolution of two magnetic configurations, in which the bulk of the magnetic flux passes through the neutron-star core and crust. The buoyancy of fluxoids and the force from the neutron vortexes are mainly responsible for their expulsion from the core in the former and latter cases, respectively.

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