Expectancy of large pulsar glitches

Details Expectancy of large pulsar glitches Expectancy of large pulsar glitches

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.204..655a&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 204, Aug. 1983, p. 655-667. Research supported by the S

Statistics

22

Pulsars, Stellar Rotation, Stellar Models, Superfluidity

Scientific paper

The theoretical expectancy of a glitch occurring in the timing observations performed to date on a large sample of 267 pulsars older than the Crab and Vela is calculated in the framework of both the unpinning and the quake models and is compared with the actual number of glitches observed from the sample. If all pulsars are assumed to experience glitches, both models are consistent with the fact that three such glitches have been observed from the entire sample. The observational statistics, which are found to be consistent with the hypothesis that Vela-type glitches occur in all older pulsars, but at increasingly long intervals as a pulsar ages, do not provide a criterion to distinguish between the two discussed models. Values of the model parameters implied by the observed number of glitches are determined.

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