Supermassive recoil velocities for binary black-hole mergers with antialigned spins

González, José A., Hannam, Mark ORCID: https://orcid.org/0000-0001-5571-325X, Sperhake, Ulrich, Brügmann, Bernd and Husa, Sascha 2007. Supermassive recoil velocities for binary black-hole mergers with antialigned spins. Physical Review Letters 98 (23) , 231101. 10.1103/PhysRevLett.98.231101

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Abstract

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 nonspinning 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 antialigned 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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Additional Information:	4 pp.
Publisher:	American Physical Society
ISSN:	0031-9007
Last Modified:	20 Oct 2022 08:18
URI:	https://orca.cardiff.ac.uk/id/eprint/27902

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