Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.253..279j&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 253, Nov. 15, 1991, p. 279-286.
Astronomy and Astrophysics
Astronomy
19
Magnetic Flux, Pulsars, Stellar Interiors, Stellar Magnetic Fields, Superconductors, Superfluidity, Electron Gas, Magnus Effect, Neutrons, Protons, Vortices
Scientific paper
The problem of magnetic flux expulsion from the superconducting interior of a neutron star is reexamined under the assumption that superfluid neutron vortices interact strongly with the two-dimensional lattice of proton vortices. The response of the proton-electron system to a Magnus force acting on the neutron vortices is found. An approximate upper limit is obtained for the Magnus force which would move a neutron vortex through the proton vortex lattice. Magnetic flux is expelled from the interior at a rate determined principally by the transport of field in the normally conducting solid crust rather than by the rotation spin-down time. It is shown that a large fraction of the original magnetic flux cold remain in the superconducting interior of a binary neutron star, for example, Her X-1, after its initial rapid spin-down and would then be trapped by the inward radial movement of neutron vortices which follows.
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