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EXPECTANCY OF LARGE PULSAR GLITCHES - A COMPARISON OF MODELS WITH THE OBSERVED GLITCH SAMPLE
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Date
1994-08-15
Author
ALPAR, MA
Baykal, Altan
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We study the expectancy of large glitches (DELTAOMEGA/OMEGA > 10(-7)) from a sample of 430 pulsars other than the Vela pulsar. The pulsars in this sample have exhibited 19 large glitches. We assume that all pulsars experience such glitches, with rates that depend on the pulsar's rotation rate OMEGA and spin-down rate OMEGA, and on the glitch model. We use the core-quake model, and two variants of the superfluid vortex unpinning model, and choose model parameters such that the observed number of glitches is matched by the theoretically expected number. Among the models investigated, one of the superfluid vortex unpinning models gives good agreement with the observed distribution of glitches and with the parameter values deduced for the Vela pulsar glitches.
Subject Keywords
MHD
,
STARS, INTERIORS
,
PULSAR, GENERAL
,
STARS, ROTATION
URI
https://hdl.handle.net/11511/49042
Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
DOI
https://doi.org/10.1093/mnras/269.4.849
Collections
Department of Physics, Article
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BibTeX
M. ALPAR and A. Baykal, “EXPECTANCY OF LARGE PULSAR GLITCHES - A COMPARISON OF MODELS WITH THE OBSERVED GLITCH SAMPLE,”
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
, vol. 269, no. 4, pp. 849–856, 1994, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/49042.