High-energy collision of black holes in higher dimensions

@article{Sperhake2019HighenergyCO,
  title={High-energy collision of black holes in higher dimensions},
  author={Ulrich Sperhake and William Cook and Diandian Wang},
  journal={Physical Review D},
  year={2019}
}
We compute the gravitational wave energy E_(rad) radiated in head-on collisions of equal-mass, nonspinning black holes in up to (D=8)-dimensional asymptotically flat spacetimes for boost velocities v up to about 90% of the speed of light. We identify two main regimes: weak radiation at velocities up to about 40% of the speed of light, and exponential growth of E_(rad) with v at larger velocities. Extrapolation to the speed of light predicts a limit of 12.9% (10.1, 7.7, 5.5, 4.5)% of the total… 

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