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  Black-hole horizons as probes of black-hole dynamics I: post-merger recoil in head-on collisions

Jaramillo, J. L., Macedo, R. P., Moesta, P., & Rezzolla, L. (2012). Black-hole horizons as probes of black-hole dynamics I: post-merger recoil in head-on collisions. Physical Review D, 85: 084030. doi:10.1103/PhysRevD.85.084030.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-EEE4-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-EEE5-9
Genre: Journal Article

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 Creators:
Jaramillo, Jose Luis1, Author              
Macedo, Rodrigo P., Author
Moesta, Philipp1, 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: The understanding of strong-field dynamics near black-hole horizons is a long-standing and challenging prob- lem in general relativity. Recent advances in numerical relativity and in the geometric characterization of black- hole horizons open new avenues into the problem. In this first paper in a series of two, we focus on the analysis of the recoil occurring in the merger of binary black holes, extending the analysis initiated in [1] with Robinson- Trautman spacetimes. More specifically, we probe spacetime dynamics through the correlation of quantities defined at the black-hole horizon and at null infinity. The geometry of these hypersurfaces responds to bulk gravitational fields acting as test screens in a scattering perspective of spacetime dynamics. Within a 3 + 1 approach we build an effective-curvature vector from the intrinsic geometry of dynamical-horizon sections and correlate its evolution with the flux of Bondi linear momentum at large distances. We employ this setup to study numerically the head-on collision of nonspinning black holes and demonstrate its validity to track the qualita- tive aspects of recoil dynamics at infinity. We also make contact with the suggestion that the antikick can be described in terms of a "slowness parameter" and how this can be computed from the local properties of the horizon. In a companion paper [2] we will further elaborate on the geometric aspects of this approach and on its relation with other approaches to characterize dynamical properties of black-hole horizons.

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 Dates: 2011-07-302012-05-052012
 Publication Status: Published in print
 Pages: final version published on PRD
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 Identifiers: arXiv: 1108.0060
DOI: 10.1103/PhysRevD.85.084030
URI: http://arxiv.org/abs/1108.0060
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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: 85 Sequence Number: 084030 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: /journals/resource/111088197762258