Non-axisymmetric oscillations of differentially rotating relativistic stars

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dc.creatorPassamonti, Andrea
dc.creatorStavridis, Adamantios
dc.creatorKokkotas, Kostas
dc.date2007-06-07
dc.date2007-12-05
dc.date.accessioned2026-07-07T11:16:41Z
dc.date.available2026-07-07T11:16:41Z
dc.descriptionNon-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 $\ell_{\rm max}$. 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.
dc.description17 pages, 7 figures, 8 tables, version accepted for publication to Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0706.0991
dc.identifierhttp://arxiv.org/abs/0706.0991
dc.identifierPhys.Rev.D77:024029,2008
dc.identifierdoi:10.1103/PhysRevD.77.024029
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192757
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleNon-axisymmetric oscillations of differentially rotating relativistic stars
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