Journal of Astrophysics and Astronomy

, Volume 6, Issue 3, pp 165–169 | Cite as

Temperature dependent variation of pulsar periods

  • M. C. Padmaraj
  • S. C. K. Nair


Changes in the radii of neutron stars due to variations in core temperature are studied qualitatively in a simple model. The resulting irregular changes in pulsar periods are compared with observed values. For the millisecond pulsar PSR 1937 + 214 the random changes in period due to temperature variation is estimated to be of the order of 10-14s yr-1 which is two orders of magnitude smaller than the steady variation due to loss of energy by radiation.

Key words

Pulsars period variations neutron stars cooling stars, interiors 


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Copyright information

© Indian Academy of Sciences 1985

Authors and Affiliations

  • M. C. Padmaraj
    • 1
  • S. C. K. Nair
    • 1
  1. 1.Physics DepartmentCalicut UniversityCalicut

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