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  Neutron star tidal disruption in mixed binaries: the imprint of the equation of state

Ferrari, V., Gualtieri, L., & Pannarale, F. (2010). Neutron star tidal disruption in mixed binaries: the imprint of the equation of state. Physical Review D., 81: 064026. doi:10.1103/PhysRevD.81.064026.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-9CD0-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-9CD3-3
Genre: Journal Article

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0912.3692 (Preprint), 352KB
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 Creators:
Ferrari, V., Author
Gualtieri, L., Author
Pannarale, F.1, Author              
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_24013              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, Solar and Stellar Astrophysics, astro-ph.SR
 Abstract: We study the tidal disruption of neutron stars in black hole-neutron star coalescing binaries. We calculate the critical orbital separation at which the star is disrupted by the black hole tidal field for several equations of state describing the matter inside the neutron star, and for a large set of the binary parameters. When the disruption occurs before the star reaches the innermost stable circular orbit, the gravitational wave (GW) signal emitted by the system is expected to exhibit a cutoff frequency nu_GWtide, which is a distinctive feature of the waveform. We evaluate nu_GWtide and show that, if this frequency will be found in a detected gravitational wave, it will allow to determine the neutron star radius with an error of a few percent, providing valuable information on the behaviour of matter in the stellar core.

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 Dates: 2009-12-182010-03-162010
 Publication Status: Published in print
 Pages: 11 pages, 9 figures, 3 tables; references added
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 0912.3692
DOI: 10.1103/PhysRevD.81.064026
URI: http://arxiv.org/abs/0912.3692
 Degree: -

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Title: Physical Review D.
  Alternative Title : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : Published for the American Physical Society by the American Institute of Physics
Pages: 11 Volume / Issue: 81 Sequence Number: 064026 Start / End Page: - Identifier: Other: 111088197762258
Other: 0556-2821