### Abstract

We study nonaxisymmetric collision of two black holes (BHs) with a high velocity v=|dxi/dx0|=0.6c-0.9c at infinity, where xμ denotes four-dimensional coordinates. We prepare two boosted BHs for the initial condition which is different from that computed by a simple moving-puncture approach. By extrapolation of the numerical results, we find that the impact parameter has to be smaller than 2.5GM0/c2 for formation of a BH in the collision for v→c, where M0c2 is the initial total Arnowitt-Deser-Misner energy of the system. For the critical value of the impact parameter, 20%-30% of mass energy and 60%-70% of angular momentum are dissipated by gravitational radiation for v=0.6c-0.9c.

Original language | English |
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Article number | 101501 |

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 78 |

Issue number | 10 |

DOIs | |

Publication status | Published - 2008 Nov 3 |

Externally published | Yes |

### ASJC Scopus subject areas

- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)

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## Cite this

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*78*(10), [101501]. https://doi.org/10.1103/PhysRevD.78.101501