Pulsar Braking Indices

Details Pulsar Braking Indices Pulsar Braking Indices

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...2e..23b&link_type=abstract

On the Present and Future of Pulsar Astronomy, 26th meeting of the IAU, Joint Discussion 2, 16-17 August, 2006, Prague, Czech Re

Astronomy and Astrophysics

Astronomy

Scientific paper

Almost all pulsars wıth anomalous positive second derivative of angular acceleration measurements (corresponding to anomalous braking indices in the range 5= 10^-7) as well as post glitch or intergiltch second {d^2Ω}/{dt^2} measurement obey the scaling between {d^2Ω}/{dt^2} and glitch parameters originally noted in the Vela pulsar. Negative second derivative values can be understood in terms of glitches that were missed or remained unresolved. We discuss the glitch rates and a priori probabilities of positive and negative braking indices according to the model developed for the Vela pulsar. This behavior supports the universal occurence of a nonlinear dynamical coupling between the neutron star crust and an interior superfluid component.

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