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  W-modes - A new family of normal modes of pulsating relativistic stars

Kokkotas, K. D., & Schutz, B. F. (1992). W-modes - A new family of normal modes of pulsating relativistic stars. Monthly Notices of the Royal Astronomical Society, 255, 119-128.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-10CB-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-10CE-D
Genre: Journal Article

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60426.pdf (Publisher version), 2MB
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 Creators:
Kokkotas, K. D.1, 2, Author
Schutz, Bernard F.2, 3, Author              
Affiliations:
1External Organizations, Salonika, University, Greece, escidoc:persistent22              
2External Organizations, University College, Cardiff, Wales, escidoc:persistent22              
3Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, escidoc:24013              

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 Abstract: A new family of outgoing-wave normal modes of pulsating relativistic stars which have no Newtonian analogues is demonstrated. These modes, named w-modes, are primarily oscillations of the space-time metric in which the fluid hardly vibrates at all. They are characterized by complex frequencies with unusually large imaginary parts, comparable to their real parts. A sequence of l = 2 modes is calculated for a number of spherical polytropic stellar models. The lowest order mode of each sequence has a frequency similar to that of a spherical black hole. For higher modes, the spectrum diverges from the black-hole spectrum, but shows remarkable similarity to that of the strongly damped modes of the toy problem. These modes are considered to be important and observable in the burst of gravitational radiation that follows the formation of a neutron star.

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 Dates: 1992-03-01
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: eDoc: 60426
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Title: Monthly Notices of the Royal Astronomical Society
Source Genre: Journal
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Publ. Info: Oxford : Blackwell Science
Pages: - Volume / Issue: 255 Sequence Number: - Start / End Page: 119 - 128 Identifier: ISSN: 0035-8711