Oscillations in the angular velocity of pulsars

Details Oscillations in the angular velocity of pulsars Oscillations in the angular velocity of pulsars

Mar 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap.....54..111s&link_type=abstract

Astrophysics, Volume 54, Issue 1, pp.111-116

Astronomy and Astrophysics

Astrophysics

Pulsars, Radii Of Superfluid Regions, Tkachenko Oscillations

Scientific paper

Observational data on long-period oscillations in the angular velocity of pulsars are examined. The characteristic radii of the superfluid regions of pulsars are determined assuming that these oscillations are collective elastic oscillations of a superfluid vortex lattice (Tkachenko oscillations). These radii are compared with values obtained in various theoretical models of neutron stars which assume the existence of a superfluid quark "CFL"-core or a superfluid hyperon core. This method can be used to estimate the radii of pulsars.

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