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Maximum kick from nonspinning black-hole binary inspiral

González, José A., Sperhake, Ulrich, Brügmann, Bernd, Hannam, Mark ORCID: and Husa, Sascha 2007. Maximum kick from nonspinning black-hole binary inspiral. Physical Review Letters 98 (9) , 091101. 10.1103/PhysRevLett.98.091101

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When unequal-mass black holes merge, the final black hole receives a kick due to the asymmetric loss of linear momentum in the gravitational radiation emitted during the merger. The magnitude of this kick has important astrophysical consequences. Recent breakthroughs in numerical relativity allow us to perform the largest parameter study undertaken to date in numerical simulations of binary black-hole inspirals. We study nonspinning black-hole binaries with mass ratios from q=M1/M2=1 to q=0.25 (η=q/(1+q)2 from 0.25 to 0.16). We accurately calculate the velocity of the kick to within 6%, and the final spin of the black holes to within 2%. A maximum kick of 175.2±11  km s-1 is achieved for η=0.195±0.005.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: American Physical Society
ISSN: 0031-9007
Last Modified: 20 Oct 2022 08:18

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