Interglitch braking indices of pulsars and energy dissipation in neutron stars

Alpar M.

1997 Pacific Rim Conference on Stellar Astrophysics, HONG KONG, PEOPLES R CHINA, 13 - 16 August 1997, vol.138, pp.7-13 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 138
  • City: HONG KONG
  • Country: PEOPLES R CHINA
  • Page Numbers: pp.7-13
  • Middle East Technical University Affiliated: No


Braking indices reported for pulsars with large glitches are in agreement with the models developed for the glitches and interglitch braking indices observed from the Vela pulsar, implying that this dynamical behavior may be universal among pulsars. This implies a lower limit on the lag in rotation rate between the crust and the superfluid components of the neutron star, and on the energy dissipation rate of the neutron star. If the magnetic fields of isolated neutron stars do not decay, then dipole radiation torques and energy dissipation in the neutron star persist after the pulsar activity is over. The lower bound on the energy dissipation rate is extrapolated to give bounds on the thermal luminosities of old isolated neutron stars.