Two Simple Models for Gravitational-Wave Modes of Compact Stars

Details Two Simple Models for Gravitational-Wave Modes of Compact Stars Two Simple Models for Gravitational-Wave Modes of Compact Stars

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996gregr..28.1433a&link_type=abstract

General Relativity and Gravitation, Volume 28, Issue 12, pp.1433-1445

Physics

10

Relativistic Star

Scientific paper

Two simple model problems relevant for the gravitational-wave modes of relativistic stars are discussed. It is shown that the entire mode-spectrum can be obtained if one considers the modes as arising because of the trapping of gravitational waves by the spacetime curvature. The stellar fluid need play no dynamic role. Furthermore, it is shown that two distinct families of gravitational-wave modes exist. The first corresponds to waves trapped inside the star, while the second is similar to acoustic waves scattered off a hard sphere. An infinite number of the first kind of modes exist, but the latter family will only have a few members.

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