Journal Article

Pulsation modes for increasingly relativistic polytropes

Nils Andersson and Kostas D. Kokkotas

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 297, issue 2, pages 493-496
Published in print June 1998 | ISSN: 0035-8711
Published online June 1998 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1046/j.1365-8711.1998.01541.x
Pulsation modes for increasingly relativistic polytropes

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We present the results of a numerical study of the fluid f, p and the gravitational w modes for increasingly relativistic non-rotating 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.

Keywords: radiation mechanisms: non-thermal; stars: neutron

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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