Vortex creep and the internal temperature of neutron stars. I - General theory

Astronomy and Astrophysics – Astrophysics

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Magnetohydrodynamics, Neutron Stars, Pulsars, Stellar Interiors, Stellar Temperature, Angular Velocity, Pinning, Relaxation Time, Steady State Creep, Vortices

Scientific paper

The theory of a neutron star superfluid coupled to normal matter via thermal creep against pinning forces is developed in some detail. General equations of motion for a pinned rotating superfluid and their form for vortex creep are given. Steady state creep and the way in which the system approaches the steady state are discussed. The developed formalism is applied to the postglitch relaxation of a pulsar, and detailed models are developed which permit explicit calculation of the postglitch response. The energy dissipation associated with creep and glitches is considered.

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