Statistics – Computation
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...403..285l&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 403, no. 1, p. 285-302.
Statistics
Computation
60
Neutron Stars, Stellar Physics, Stellar Rotation, Vortices, Angular Momentum, Computational Astrophysics, Quantum Mechanics, Stellar Interiors, Stellar Structure
Scientific paper
The change in angular momentum of the neutron stars superfluid is determined by the motion of its vortex lines. In the star's inner crust, vortices pin to the nuclear lattice and move by the process of vortex creep. Here we develop a rate theory for vortex creep. Our results differ from those of earlier work by including both quantum and classical unpinning processes, as well as the effects of vortex tension. Quantum tunneling sets a lower limit to the creep rate at low temperatures. Vortex tension reduces the creep rate by coupling adjacent pinning sites. The superfluid in the highest density parts of the inner crust may approach rotational equilibrium on sufficiently short timescales and possess an adequate moment of inertia to account for observed postglitch relaxations.
Baym Gordon
Epstein Richard I.
Link Bennett
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