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A hydrodynamical trigger mechanism for pulsar glitches

Glampedakis, K. and Andersson, N. (2008) A hydrodynamical trigger mechanism for pulsar glitches Pre-print, 5pp. (doi:10.1103/PhysRevLett.102.141101).

Record type: Article


The standard explanation for large pulsar glitches involves transfer of angular momentum from an internal superfluid component to the star's crust. This model requires an instability to trigger the sudden unpinning of the vortices by means of which the superfluid rotates. This Letter describes a new instability that may play this role. The instability, which is associated with the inertial r-modes of a superfluid neutron star, sets in once the rotational lag in the system reaches a critical level. We demonstrate that our model is in good agreement with observed glitch data, suggesting that the superfluid r-mode instability may indeed be the mechanism that triggers large pulsar glitches.

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Submitted date: 23 June 2008
Additional Information: arXiv:0806.3664v1
Organisations: Applied Mathematics


Local EPrints ID: 54977
PURE UUID: 3086b39f-7c81-4ed1-806a-ef0edc3c8f88

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Date deposited: 04 Aug 2008
Last modified: 17 Jul 2017 14:34

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Author: K. Glampedakis
Author: N. Andersson

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