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  The Black Hole Remnant of Black Hole-Neutron Star Coalescing Binaries

Pannarale, F. (2013). The Black Hole Remnant of Black Hole-Neutron Star Coalescing Binaries. Physical Review D, 88(10): 104025. doi:10.1103/PhysRevD.88.104025.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-541B-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-F713-C
Genre: Journal Article

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 Creators:
Pannarale, Francesco1, 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, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 Abstract: We present a model for determining the dimensionless spin parameter and mass of the black hole remnant of black hole-neutron star mergers with parallel orbital angular momentum and initial black hole spin. This approach is based on the Buonanno, Kidder, and Lehner method for binary black holes and it is successfully tested against the results of numerical-relativity simulations: the dimensionless spin parameter is predicted with absolute error $\lesssim 0.02$, whereas the relative error on the final mass is $\lesssim 2$%, its distribution being pronouncedly peaked at 1%. Our approach and the fit to the torus remnant mass reported in Foucart (2012) thus constitute an easy-to-use analytical model that accurately describes the remnant of BH-NS mergers. We investigate the space of parameters consisting of the binary mass ratio, the initial black hole spin, and the neutron star mass and equation of state. We provide indirect support to the cosmic censorship conjecture for black hole remnants of black hole-neutron star mergers. We show that the presence of a neutron star affects the quasi-normal mode frequency of the black hole remnant, thus suggesting that the ringdown epoch of the gravitational wave signal may virtually be used to (1) distinguish binary black hole from black hole-neutron star mergers and to (2) constrain the neutron star equation of state.

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 Dates: 2012-08-29201320132013
 Publication Status: Published in print
 Pages: 16 pages, 11 figures, 45tables
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1208.5869
DOI: 10.1103/PhysRevD.88.104025
 Degree: -

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Title: Physical Review D
  Other : 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: - Volume / Issue: 88 (10) Sequence Number: 104025 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: /journals/resource/111088197762258