Vortex pinning in neutron stars

Details Vortex pinning in neutron stars Vortex pinning in neutron stars

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...328..680e&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 328, May 15, 1988, p. 680-690. DOE-sponsored research.

Statistics

Computation

62

Neutron Stars, Pulsars, Stellar Cores, Stellar Interiors, Superfluidity, Vorticity, Angular Velocity, Computational Astrophysics, Free Energy

Scientific paper

The rotating superfluid in the inner crust of a neutron star is threaded by vortex lines. These lines tend to pin to the solid crust by dint of their interaction with nuclei. Here this interaction is examined. The distortion of the superfluid flow by a nucleus produces either an attractive or a repulsive force between a vortex line and a nucleus, depending on the dynamical superfluid mass density in the nucleus. The superfluid properties of nuclei are estimated by minimizing the Ginzburg-Landau free-energy functional, and it is found that nuclei can bind to vortex lines for stellar densities greater than about 10 to the 13th g/cu cm and are repelled from vortex lines at lower densities in the inner crust.

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