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  Gravitational waves from hot young rapidly rotating neutron stars

Owen, B. J., Lindblom, L., Cutler, C., Schutz, B. F., Vecchio, A., & Andersson, N. (1998). Gravitational waves from hot young rapidly rotating neutron stars. Physical Review D, 58(8): 084020. doi:10.1103/PhysRevD.58.084020.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-746F-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-7472-C
Genre: Journal Article

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 Creators:
Owen, Benjamin J.1, Author              
Lindblom, Lee2, Author
Cutler, Curt3, Author
Schutz, Bernard F.4, Author              
Vecchio, Alberto3, Author
Andersson, Nils2, Author
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              
2External Organizations, ou_persistent22              
3MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_24007              
4Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_24013              

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 Abstract: Gravitational radiation drives an instability in the r-modes of young rapidly rotating neutron stars. This instability is expected to carry away most of the angular momentum of the star by gravitational radiation emission, leaving a star rotating at about 100 Hz. In this paper we model in a simple way the development of the instability and evolution of the neutron star during the year-long spindown phase. This allows us to predict the general features of the resulting gravitational waveform. We show that a neutron star formed in the Virgo cluster could be detected by the LIGO and VIRGO gravitational wave detectors when they reach their ``enhanced'' level of sensitivity, with an amplitude signal-to-noise ratio that could be as large as about 8 if near-optimal data analysis techniques are developed. We also analyze the stochastic background of gravitational waves produced by the r-mode radiation from neutron-star formation throughout the universe. Assuming a substantial fraction of neutron stars are born with spin frequencies near their maximum values, this stochastic background is shown to have an energy density of about 10^-9 of the cosmological closure density, in the range 20 Hz to 1 kHz. This radiation should be detectable by ``advanced'' LIGO as well.

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Language(s): eng - English
 Dates: 1998-10-15
 Publication Status: Published in print
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 Rev. Method: Peer
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 58 (8) Sequence Number: 084020 Start / End Page: - Identifier: ISSN: 1089-4918