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).


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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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1103/PhysRevLett.102.141101
Additional Information: arXiv:0806.3664v1
Related URLs:
ePrint ID: 54977
Date :
Date Event
23 June 2008Submitted
Date Deposited: 04 Aug 2008
Last Modified: 16 Apr 2017 17:45
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/54977

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