Evidence for violations of Weak Cosmic Censorship in black hole collisions in higher dimensions

Evidence for violations of Weak Cosmic Censorship in black hole collisions in higher dimensions

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Abstract We study collisions of boosted rotating black holes in D = 6 and 7 spacetime dimensions with a Bike Parts - Tubes non-zero impact parameter.We find that there exists an open set of initial conditions such that the intermediate state of the collision is a black hole with a dumbbell-like horizon which is unstable to a local Gregory-Laflamme-type instability.We are able to provide convincing numerical evidence that the evolution of such an instability leads to a pinch off of the horizon in finite asymptotic time thus forming a naked singularity, as in similar unstable black holes.Since the black holes in the initial state are stable, this is the first genuinely generic Whips-Quirts evidence for the violation of the Weak Cosmic Censorship Conjecture in higher dimensional asymptotically flat spacetimes.