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Two simple models for gravitational-wave modes of compact stars

Two simple models for gravitational-wave modes of compact stars
Two simple models for gravitational-wave modes of compact stars
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.
0001-7701
1433-1445
Andersson, Nils
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
Andersson, Nils
2dd6d1ee-cefd-478a-b1ac-e6feedafe304

Andersson, Nils (1996) Two simple models for gravitational-wave modes of compact stars. General Relativity and Gravitation, 28 (12), 1433-1445. (doi:10.1007/BF02113773).

Record type: Article

Abstract

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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More information

Published date: 1996

Identifiers

Local EPrints ID: 29416
URI: http://eprints.soton.ac.uk/id/eprint/29416
ISSN: 0001-7701
PURE UUID: 5e63ab38-4503-4733-b166-1cc4e952572c
ORCID for Nils Andersson: ORCID iD orcid.org/0000-0001-8550-3843

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Date deposited: 06 Feb 2007
Last modified: 16 Mar 2024 03:01

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