Lagrangian perturbation theory of nonrelativistic superfluid stars
Lagrangian perturbation theory of nonrelativistic superfluid stars
We develop a Lagrangian perturbation framework for rotating non-relativistic superfluid neutron stars. This leads to the first generalization of classic work on the stability properties of rotating stars to models that account for the presence of potentially weakly coupled superfluid components. Our analysis is based on the standard two-fluid model expected to be relevant for the conditions that prevail in the outer core of mature neutron stars. We discuss the implications of our results for dynamic and secular instabilities of a simple neutron star model in which the two fluids are allowed to assume different (uniform) rotation rates.
918-928
Comer, G.L.
f2c1746c-8638-4268-94f0-e5d4375f0358
Andersson, N.
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
Grosart, K.
28b596cf-e3eb-4e68-b218-22a40af9274f
December 2004
Comer, G.L.
f2c1746c-8638-4268-94f0-e5d4375f0358
Andersson, N.
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
Grosart, K.
28b596cf-e3eb-4e68-b218-22a40af9274f
Comer, G.L., Andersson, N. and Grosart, K.
(2004)
Lagrangian perturbation theory of nonrelativistic superfluid stars.
Monthly Notices of the Royal Astronomical Society, 355 (4), .
(doi:10.1111/j.1365-2966.2004.08370.x).
Abstract
We develop a Lagrangian perturbation framework for rotating non-relativistic superfluid neutron stars. This leads to the first generalization of classic work on the stability properties of rotating stars to models that account for the presence of potentially weakly coupled superfluid components. Our analysis is based on the standard two-fluid model expected to be relevant for the conditions that prevail in the outer core of mature neutron stars. We discuss the implications of our results for dynamic and secular instabilities of a simple neutron star model in which the two fluids are allowed to assume different (uniform) rotation rates.
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Published date: December 2004
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Local EPrints ID: 29461
URI: http://eprints.soton.ac.uk/id/eprint/29461
ISSN: 1365-2966
PURE UUID: fc24f5e7-9fc8-4bd3-ad5f-a091e3d645b7
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Date deposited: 11 May 2006
Last modified: 16 Mar 2024 03:02
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Author:
G.L. Comer
Author:
K. Grosart
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