Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2007-02-08
Phys.Rev.Lett.98:231101,2007
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Final version, published by Phys. Rev. Lett.; title changed according to suggestion of PRL; note added after preparation of ma
Scientific paper
10.1103/PhysRevLett.98.231101
Recent calculations of the recoil velocity in binary black hole mergers have found the kick velocity to be of the order of a few hundred km/s in the case of non-spinning binaries and about $500 $km/s in the case of spinning configurations, and have lead to predictions of a maximum kick of up to $1300 $km/s. We test these predictions and demonstrate that kick velocities of at least $2500 $km/s are possible for equal-mass binaries with anti-aligned spins in the orbital plane. Kicks of that magnitude are likely to have significant repercussions for models of black-hole formation, the population of intergalactic black holes and the structure of host galaxies.
Brugmann Bernd
Gonzalez Jose A.
Hannam Mark D.
Husa Sascha
Sperhake Uli
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