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  Black-hole horizons as probes of black-hole dynamics II: geometrical insights

Jaramillo, J. L., Macedo, R. P., Moesta, P., & Rezzolla, L. (2012). Black-hole horizons as probes of black-hole dynamics II: geometrical insights. Physical Review D, 85: 084031. doi:10.1103/PhysRevD.85.084031.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-EEE0-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-EEE1-2
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: In a companion paper [1], we have presented a cross-correlation approach to near-horizon physics in which bulk dynamics is probed through the correlation of quantities defined at inner and outer spacetime hypersurfaces acting as test screens. More specifically, dynamical horizons provide appropriate inner screens in a 3+1 setting and, in this context, we have shown that an effective-curvature vector measured at the common horizon produced in a head-on collision merger can be correlated with the flux of linear Bondi-momentum at null infinity. In this paper we provide a more sound geometric basis to this picture. First, we show that a rigidity property of dynamical horizons, namely foliation uniqueness, leads to a preferred class of null tetrads and Weyl scalars on these hypersurfaces. Second, we identify a heuristic horizon news-like function, depending only on the geometry of spatial sections of the horizon. Fluxes constructed from this function offer refined geometric quantities to be correlated with Bondi fluxes at infinity, as well as a contact with the discussion of quasi-local 4-momentum on dynamical horizons. Third, we highlight the importance of tracking the internal horizon dual to the apparent horizon in spatial 3-slices when integrating fluxes along the horizon. Finally, we discuss the link between the dissipation of the non-stationary part of the horizon's geometry with the viscous-fluid analogy for black holes, introducing a geometric prescription for a "slowness parameter" in black-hole recoil dynamics.

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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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 Rev. Method: -
 Identifiers: arXiv: 1108.0061
DOI: 10.1103/PhysRevD.85.084031
URI: http://arxiv.org/abs/1108.0061
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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: 084031 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: /journals/resource/111088197762258