Journal article
Long-term statistics of pulsar glitches triggered by a Brownian stress accumulation process
JB Carlin, A Melatos
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | OXFORD UNIV PRESS | Published : 2020
Abstract
A microphysics-agnostic meta-model of rotational glitches in rotation-powered pulsars is developed, wherein the globally averaged internal stress accumulates as a Brownian process between glitches, and a glitch is triggered once a critical threshold is surmounted. Precise, falsifiable predictions are made regarding long-term event statistics in individual pulsars. For example, the Spearman cross-correlation coefficient between the size of a glitch and thewaiting time until the next glitch should exceed 0.25 in all pulsars. Among the six pulsars with themost recorded glitches, PSR J0537-6910 and PSR J0835-4510 are consistent with the predictions of the meta-model, while PSR J1740-3015 and PSR..
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Grants
Awarded by Australian Research Council (ARC) Centre of Excellence for Gravitational Wave Discovery (OzGrav)
Awarded by ARC Discovery Project
Funding Acknowledgements
Parts of this research are supported by the Australian Research Council (ARC) Centre of Excellence for Gravitational Wave Discovery (OzGrav) (project number CE170100004) and ARC Discovery Project DP170103625. JBC is supported by an Australian Postgraduate Award. We thank the anonymous referee for pointing out that inter-glitch spin wandering places independent constraints on the Brownian meta-model in principle, as discussed in Section 2.5.