The Generation of Timing Noise by Superfluid Rotation in Pulsars

Details The Generation of Timing Noise by Superfluid Rotation in Pulsars The Generation of Timing Noise by Superfluid Rotation in Pulsars

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.246..364j&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 246, NO.2/SEP15, P. 364, 1990

Astronomy and Astrophysics

Astronomy

15

Scientific paper

The pulsar timing noise component produced by a variable internal torque is a source of information about the neutron superfluid rotation. It is shown that the existence of a region in which the vortices corotate with the superfluid explains the properties of the discrete micro-events identified by Cordes & Downs and allows the formulation of a noise model for the rotation angular velocity time-derivative not inconsistent with the measured power spectra of PSR 0531+21 and 0833-45. The model provides some indication that the millisecond pulsar 1937+21 is anomalously quiet: a possible explanation is that it lacks a neutron-drip superfluid owing to the presence of an absolutely stable quark matter phase.

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