Nonlinear radial oscillations of neutron stars
Nonlinear radial oscillations of neutron stars
The effects of nonlinear oscillations in compact stars are attracting considerable current interest. In order to study such phenomena in the framework of fully nonlinear general relativity, highly accurate numerical studies are required. A numerical scheme specifically tailored for such a study is based on formulating the time evolution in terms of deviations from a stationary equilibrium configuration.
Using this technique, we investigate over a wide range of amplitudes nonlinear effects in the evolution of radial oscillations of neutron stars. In particular, we discuss mode coupling due to nonlinear interaction, the occurrence of resonance phenomena, shock formation near the stellar surface as well as the capacity of nonlinearities to stabilize perturbatively unstable neutron star models.
64012
Gabler, Michael
8f33d92e-77fa-4fbc-adfc-af15ec0e3603
Sperhake, Ulrich
636ee47a-21ea-4e1e-9095-53476aa89c0e
Andersson, Nils
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
2009
Gabler, Michael
8f33d92e-77fa-4fbc-adfc-af15ec0e3603
Sperhake, Ulrich
636ee47a-21ea-4e1e-9095-53476aa89c0e
Andersson, Nils
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
Gabler, Michael, Sperhake, Ulrich and Andersson, Nils
(2009)
Nonlinear radial oscillations of neutron stars.
Physical Review D, 80 (6), .
(doi:10.1103/PhysRevD.80.064012).
Abstract
The effects of nonlinear oscillations in compact stars are attracting considerable current interest. In order to study such phenomena in the framework of fully nonlinear general relativity, highly accurate numerical studies are required. A numerical scheme specifically tailored for such a study is based on formulating the time evolution in terms of deviations from a stationary equilibrium configuration.
Using this technique, we investigate over a wide range of amplitudes nonlinear effects in the evolution of radial oscillations of neutron stars. In particular, we discuss mode coupling due to nonlinear interaction, the occurrence of resonance phenomena, shock formation near the stellar surface as well as the capacity of nonlinearities to stabilize perturbatively unstable neutron star models.
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Published date: 2009
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Local EPrints ID: 151311
URI: http://eprints.soton.ac.uk/id/eprint/151311
ISSN: 1550-7998
PURE UUID: 027c9db6-09ed-4648-ab1e-7d12b8ffc1cb
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Date deposited: 10 May 2010 10:51
Last modified: 14 Mar 2024 02:42
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Author:
Michael Gabler
Author:
Ulrich Sperhake
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