Abstract
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.
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Padmaraj, M.C., Nair, S.C.K. Temperature dependent variation of pulsar periods. J. Astrophys. Astr. 6, 165–169 (1985). https://doi.org/10.1007/BF02714997
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DOI: https://doi.org/10.1007/BF02714997