Pulsation modes for increasingly relativistic polytropes

Details Pulsation modes for increasingly relativistic polytropes Pulsation modes for increasingly relativistic polytropes

1997-06-03

arxiv.org/abs/gr-qc/9706010v1

Mon.Not.Roy.Astron.Soc. 297 (1998) 493

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

submitted to MNRAS

Scientific paper

10.1046/j.1365-8711.1998.01541.x

We present the results of a numerical study of the fluid $f$, $p$ and the gravitational $w$ modes for increasingly relativistic nonrotating polytropes. The results for $f$ and $w$-modes are in good agreement with previous data for uniform density stars, which supports an understanding of the nature of the gravitational wave modes based on the uniform density data. We show that the $p$-modes can become extremely long-lived for some relativistic stars. This effect is attributed to the change in the perturbed density distribution as the star becomes more compact.

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