Other
Scientific paper
Nov 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...242..306d&link_type=abstract
Astrophysical Journal, Part 1, vol. 242, Nov. 15, 1980, p. 306-318.
Other
5
Neutron Stars, Precession, Stellar Motions, Superfluidity, Equations Of Motion, Spin Dynamics, Stellar Models, Stellar Rotation, Stellar Structure, Stress Analysis, Torque
Scientific paper
The dynamics of a neutron star subject to an external torque is analyzed by considering it as a two-component body. The solid crust and the interior plasma coupled to it by a magnetic field constitute one component, with the interior neutron superfluid being the other component. A viscous stress and an inertial stress acting between the crust and the interior are expressed in equations of motion solved by a perturbation method in the limit that the spin rate changes during the precession period; the viscous stress causes a secular evolution of the spin angular momentum and precession amplitude even if relativistic effects dominate the precession rate. The strength of the inertial couple is critical in determining the decay rate of forced precessional motion; the behavior of a force-precessed superfluid can be found by laboratory experiments that are proposed.
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