2002MNRAS.335..733J

The glitch model of Ruderman, Zhu & Chen is applied to the problem of post-glitch relaxation. The energy dissipated in a glitch is such that motion of both solid and liquid phases during and after spin-up is strictly constrained to surfaces of constant chemical composition. The amorphous and heterogeneous nature of the solid phase of neutron star matter is used to deduce the qualitative form of the dissipative force acting on unit length of a neutron vortex as a function of its velocity. The analysis of post-glitch relaxation given here is necessarily qualitative owing to the stochastic nature of the model, but is consistent with both the normal and anomalous cases observed.