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Non-axisymmetric oscillations of differentially rotating relativistic stars

Record type: Article

Non-axisymmetric oscillations of differentially rotating stars are studied using both slow rotation and Cowling approximation. The equilibrium stellar models are relativistic polytropes where differential rotation is described by the relativistic j-constant rotation law. The oscillation spectrum is studied versus three main parameters: the stellar compactness M/R, the degree of differential rotation A and the number of maximun couplings [script-I]max. It is shown that the rotational splitting of the non-axisymmetric modes is strongly enhached by increasing the compactness of the star and the degree of differential rotation. Finally, we investigate the relation between the fundamental quadrupole mode and the corotation band of differentially rotating stars.

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Citation

Passamonti, Andrea, Stavridis, Adamantios and Kokkotas, Kostas D. (2008) Non-axisymmetric oscillations of differentially rotating relativistic stars Physical Review D, 77, (2), 024029-[14pp]. (doi:10.1103/PhysRevD.77.024029).

More information

Submitted date: 7 June 2007
Published date: 17 January 2008
Keywords: spectral properties of differentially rotating neutron stars.

Identifiers

Local EPrints ID: 63196
URI: http://eprints.soton.ac.uk/id/eprint/63196
ISSN: 1550-7998
PURE UUID: 799fb2c8-ca22-4042-8f39-784b83a6120d

Catalogue record

Date deposited: 17 Sep 2008
Last modified: 17 Jul 2017 14:18

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Contributors

Author: Andrea Passamonti
Author: Adamantios Stavridis
Author: Kostas D. Kokkotas

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