Nonradial oscillations of slowly and differentially rotating compact stars
作者： Adamantios Stavridis , Andrea Passamonti , Kostas Kokkotas
DOI: 10.1103/PHYSREVD.75.064019
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摘要: The equations describing nonradial adiabatic oscillations of differentially rotating relativistic stars are derived in slow rotation approximation. configuration is described by a perturbative version the j-constant law. Focusing on oscillation properties stellar fluid, perturbations studied Cowling approximation with system five partial differential equations. In these equations, introduces new coupling terms between quantities respect to uniformly stars. particular, we investigate axisymmetric and barotropic compare their spectral those obtained nonlinear hydrodynamical studies. description background spectrum agree within few percent
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