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arXiv · 1709.10514

Black-hole head-on collisions in higher dimensions

William G. Cook·Ulrich Sperhake·Emanuele Berti·Vitor Cardoso
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Abstract

The collision of black holes and the emission of gravitational radiation in higher-dimensional spacetimes are of interest in various research areas, including the gauge-gravity duality, the TeV gravity scenarios evoked for the explanation of the hierarchy problem, and the large-dimensionality limit of general relativity. We present numerical simulations of head-on collisions of nonspinning, unequal-mass black holes starting from rest in general relativity with $4 \leq D\leq 10$ spacetime dimensions. We compare the energy and linear momentum radiated in gravitational waves with perturbative predictions in the extreme mass ratio limit, demonstrating the strength and limitations of black-hole perturbation theory in this context.

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William G. Cook, Ulrich Sperhake, Emanuele Berti, Vitor Cardoso. 2017-09-29. Black-hole head-on collisions in higher dimensions. https://doi.org/10.1103/physrevd.96.124006

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