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

González, José A., Hannam, Mark ORCID:, 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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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

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