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Expectancy of large pulsar glitches

Published online by Cambridge University Press:  12 April 2016

Altan Baykal  and
Ali Alpar
Altan Baykal
Affiliation:
NAS/NRC Resident Research Associate, LHEA NASA/GSFC Greenbelt, Maryland 20771, USAand Physics Dept., Middle East Technical University, Ankara 06531, Turkey
Ali Alpar
Affiliation:
Physics Dept., Middle East Technical University, Ankara 06531, Turkey

Abstract

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We study the expectancy of large glitches (ΔΩ/Ω > 10−7) from a sample of 472 pulsars other than the Vela pulsar. The pulsars in this sample have exhibited 20 large glitches. In the sample the total observation span is larger than 2000 pulsar years. We assume that all pulsars experience such glitches, with rates that depend on the pulsars’ rotation rate and spin-down rate, and on the glitch model. The superfluid vortex unpinning model gives good agreement with the observed distribution of glitches and with the parameter values deduced for the Vela pulsar glitches.

Type
Part 2 Precision Measurements
Information
International Astronomical Union Colloquium , Volume 160: Pulsars: Problems and Progress , 1996 , pp. 105 - 106
Copyright
Copyright © Astronomical Society of the Pacific 1996

References

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