Ohmic decay of magnetic flux expelled from neutron star interiors

Details Ohmic decay of magnetic flux expelled from neutron star interiors Ohmic decay of magnetic flux expelled from neutron star interiors

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.282.1059b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 282, Issue 3, pp. 1059-1063.

Astronomy and Astrophysics

Astronomy

20

Magnetic Fields - Stars, Neutron - Pulsars, General.

Scientific paper

We study Ohmic diffusion of magnetic flux expelled from the superconducting core of a neutron star to its crust owing to spindown-induced field evolution. We find that Ohmic decay time-scales in the range 10^7.5-10^9 yr obtain for a wide range of crustal temperatures and impurity concentrations for various equation of state models of neutron star matter. This result is in agreement with the Ohmic time-scale that appears to be required to explain observed magnetic field strengths of isolated and binary neutron stars in the spindown-induced magnetic flux expulsion scenario.

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