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  Analytic modelling of tidal effects in the relativistic inspiral of binary neutron stars

Baiotti, L., Damour, T., Giacomazzo, B., Nagar, A., & Rezzolla, L. (2010). Analytic modelling of tidal effects in the relativistic inspiral of binary neutron stars. Physical Review Letters, 105: 261101. doi:10.1103/PhysRevLett.105.261101.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-EF84-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-12C4-6
Genre: Journal Article

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1009.0521 (Preprint), 540KB
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 Creators:
Baiotti, Luca, Author
Damour, Thibault, Author
Giacomazzo, Bruno, Author
Nagar, Alessandro, Author
Rezzolla, Luciano1, Author              
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: To detect the gravitational-wave (GW) signal from binary neutron stars and extract information about the equation of state of matter at nuclear density, it is necessary to match the signal with a bank of accurate templates. We present the two longest (to date) general-relativistic simulations of equal-mass binary neutron stars with different compactnesses, C=0.12 and C=0.14, and compare them with a tidal extension of the effective-one-body (EOB)model. The typical numerical phasing errors over the $\simeq 22$ GW cycles are $\Delta \phi\simeq \pm 0.24$ rad. By calibrating only one parameter (representing a higher-order amplification of tidal effects), the EOB model can reproduce, within the numerical error, the two numerical waveforms essentially up to the merger. By contrast, the third post-Newtonian Taylor-T4 approximant with leading-order tidal corrections dephases with respect to the numerical waveforms by several radians.

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 Dates: 2010-09-022010-12-222010
 Publication Status: Published in print
 Pages: 4
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1009.0521
DOI: 10.1103/PhysRevLett.105.261101
URI: http://arxiv.org/abs/1009.0521
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Title: Physical Review Letters
Source Genre: Journal
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Publ. Info: Woodbury, N.Y., etc. : American Physical Society.
Pages: - Volume / Issue: 105 Sequence Number: 261101 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: /journals/resource/954925433406_1