Orbiting black-hole binaries and apparent horizons in higher dimensions
View / Open Files
Publication Date
2018Journal Title
Classical and Quantum Gravity
ISSN
0264-9381
Publisher
IOP Publishing
Volume
35
Issue
23
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Cook, W., Wang, D., & Sperhake, U. (2018). Orbiting black-hole binaries and apparent horizons in higher dimensions. Classical and Quantum Gravity, 35 (23) https://doi.org/10.1088/1361-6382/aae995
Abstract
We study gravitational wave emission and the structure and formation of
apparent horizons in orbiting black-hole binary systems in higher-dimensional
general relativity. For this purpose we present an apparent horizon finder for
use in higher dimensional numerical simulations and test the finder's accuracy
and consistency in single and binary black-hole spacetimes. The black-hole
binaries we model in $D=6$ dimensions complete up to about one orbit before
merging or scatter off each other without formation of a common horizon. In
agreement with the absence of stable circular geodesic orbits around
higher-dimensional black holes, we do not find binaries completing multiple
orbits without finetuning of the initial data. All binaries radiate about
$0.13\,\%$ to $0.2\,\%$ of the total mass-energy in gravitational waves, over
an order of magnitude below the radiated energy measured for four-dimensional
binaries. The low radiative efficiency is accompanied by relatively slow
dynamics of the binaries as expected from the more rapid falloff of the binding
gravitational force in higher dimensions.
Sponsorship
Science and Technology Facilities Council (ST/M007065/1)
European Research Council (646597)
European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (690904)
Science and Technology Facilities Council (ST/L000636/1)
Science and Technology Facilities Council (ST/H008586/1)
Science and Technology Facilities Council (ST/K00333X/1)
Science and Technology Facilities Council (ST/P000673/1)
Science and Technology Facilities Council (ST/J005673/1)
Identifiers
External DOI: https://doi.org/10.1088/1361-6382/aae995
This record's URL: https://www.repository.cam.ac.uk/handle/1810/286735
Rights
Licence:
http://www.rioxx.net/licenses/all-rights-reserved
Statistics
Total file downloads (since January 2020). For more information on metrics see the
IRUS guide.