Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2007-01-22
Phys.Rev.D75:064019,2007
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
18 pages, 5 figures, ReVTeX 4.0, submitted to Phys. Rev. D
Scientific paper
10.1103/PhysRevD.75.064019
The equations describing nonradial adiabatic oscillations of differentially rotating relativistic stars are derived in relativistic slow rotation approximation. The differentially rotating configuration is described by a perturbative version of the relativistic j-constant rotation law. Focusing on the oscillation properties of the stellar fluid, the adiabatic nonradial perturbations are studied in the Cowling approximation with a system of five partial differential equations. In these equations, differential rotation introduces new coupling terms between the perturbative quantites with respect to the uniformly rotating stars. In particular, we investigate the axisymmetric and barotropic oscillations and compare their spectral properties with those obtained in nonlinear hydrodynamical studies. The perturbative description of the differentially rotating background and the oscillation spectrum agree within a few percent with those of the nonlinear studies.
Kokkotas Kostas
Passamonti Andrea
Stavridis Adamantios
No associations
LandOfFree
Nonradial oscillations of slowly and differentially rotating compact stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Nonradial oscillations of slowly and differentially rotating compact stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonradial oscillations of slowly and differentially rotating compact stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-516140