Angular velocity glitches of the Vela pulsar in a model with ``centrifugal buoyancy'' of vortices

Details Angular velocity glitches of the Vela pulsar in a model with ``centrifugal buoyancy'' of vortices Angular velocity glitches of the Vela pulsar in a model with ``centrifugal buoyancy'' of vortices

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap.....50..144s&link_type=abstract

Astrophysics, Volume 50, Issue 2, pp.144-156

Astronomy and Astrophysics

Astrophysics

1

(Stars:), Pulsars-Isolated, Vela

Scientific paper

The forces acting on the solid crust of a differentially rotating neutron star are examined when a nonuniform excess of chemical potential exists. The resultant of the external forces, a stress force, is expressed in terms of a centrifugal buoyancy force and the deformation of the star’s crust under the action of this force is calculated. It is shown that there is a region within the star where the resulting stresses lead to fracture of the crust when the difference in the angular velocities of the superfluid and normal components reaches a critical value. The “centrifugal buoyancy” mechanism for generating a glitch is used to estimate the parameters of glitches in the Vela pulsar.

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