Gravity-dominated unequal-mass black hole collisions
Physical Review D
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Sperhake, U., Berti, E., Cardoso, V., & Pretorius, F. (2016). Gravity-dominated unequal-mass black hole collisions. Physical Review D, 93 (044012)https://doi.org/10.1103/PhysRevD.93.044012
We continue our series of studies of high-energy collisions of black holes investigating unequalmass, boosted head-on collisions in four dimensions. We show that the fraction of the center-of-mass energy radiated as gravitational waves becomes independent of mass ratio and approximately equal to 13% at large energies. We support this conclusion with calculations using black hole perturbation theory and Smarr’s zero-frequency limit approximation. These results lend strong support to the conjecture that the detailed structure of the colliding objects is irrelevant at high energies.
This work was supported by the H2020-MSCA-RISE-2015 Grant No. StronGrHEP- 690904, the SDSC Comet and TACC Stampede clusters through NSF-XSEDE Grant No. PHY-090003, STFC Consolidator Grant No. ST/L000636/1, and DiRAC’s Cosmos Shared Memory system through BIS Grant No. ST/J005673/1 and STFC Grant Nos. ST/H008586/1, ST/K00333X/1. E.B. is supported by NSF CAREER Grant No. PHY-1055103 and by FCT contract IF/00797/2014/CP1214/CT0012 under the IF2014 Programme. V.C. thanks the Departament de F´ısica Fonamental at Universitat de Barcelona for hospitality while this work was being completed. V.C. and U.S. acknowledge financial support provided under the European Union’s H2020 ERC Consolidator Grant “Matter and strong-field gravity: New frontiers in Einstein’s theory” grant agreement no. MaGRaTh–646597. V.C. also acknowledges financial support from FCT under Sabbatical Fellowship nr. SFRH/BSAB/105955/2014. F.P. acknowledges financial support from the Simons Foundation and NSF grant PHY-1305682. This research was supported in part by the Perimeter Institute for Theoretical Physics. Research at Perimeter Institute is supported by the Government of Canada through Industry Canada and by the Province of Ontario through the Ministry of Economic Development & Innovation.
ECH2020 EUROPEAN RESEARCH COUNCIL (ERC) (646597)
European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (690904)
External DOI: https://doi.org/10.1103/PhysRevD.93.044012
This record's URL: https://www.repository.cam.ac.uk/handle/1810/253273