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  Strong-Field Scattering of Two Black Holes: Numerics Versus Analytics

Damour, T., Guercilena, F., Hinder, I., Hopper, S., Nagar, A., & Rezzolla, L. (2014). Strong-Field Scattering of Two Black Holes: Numerics Versus Analytics. Physical Review D, 89: 081503. doi:10.1103/PhysRevD.89.081503.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-001A-1158-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-001A-115A-C
Genre: Journal Article

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1402.7307.pdf (Preprint), 211KB
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 Creators:
Damour, Thibault, Author
Guercilena, Federico, Author
Hinder, Ian, Author
Hopper, Seth, 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: We probe the gravitational interaction of two black holes in the strong-field regime by computing the scattering angle $\chi$ of hyperbolic-like, close binary-black-hole encounters as a function of the impact parameter. The fully general-relativistic result from numerical relativity is compared to two analytic approximations: post-Newtonian theory and the effective-one-body formalism. As the impact parameter decreases, so that black holes pass within a few times their Schwarzschild radii, we find that the post-Newtonian prediction becomes quite inaccurate, while the effective-one-body one keeps showing a good agreement with numerical results. Because we have explored a regime which is very different from the one considered so far with binaries in quasi-circular orbits, our results open a new avenue to improve analytic representations of the general-relativistic two-body Hamiltonian.

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 Dates: 2014-02-282014
 Publication Status: Published in print
 Pages: 5 pages, 3 figures. Submitted to Physical Review Letters
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1402.7307
DOI: 10.1103/PhysRevD.89.081503
URI: http://arxiv.org/abs/1402.7307
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 89 Sequence Number: 081503 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: /journals/resource/111088197762258