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Amplification of superkicks in black-hole binaries through orbital eccentricity

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arxiv 1910.01598 v2 pith:YFY3NZF4 submitted 2019-10-03 gr-qc astro-ph.HE

U.Sperhake , R.Rosca-Mead , D.Gerosa , E.Berti This is my paper · ORCID
classification gr-qcastro-ph.HE
keywords blackholesbinaryeccentricityorbitalamplificationantiparallelasymmetry
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abstract

We present new numerical-relativity simulations of eccentric merging black holes with initially antiparallel spins lying in the orbital plane (the so-called \emph{superkick} configuration). Binary eccentricity boosts the recoil of the merger remnant by up to $25\%$. The increase in the energy flux is much more modest, and therefore this kick enhancement is mainly due to asymmetry in the binary dynamics. Our findings might have important consequences for the retention of stellar-mass black holes in star clusters and supermassive black holes in galactic hosts.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Accurate models for recoil velocity distribution in black hole mergers with comparable to extreme mass-ratios and their astrophysical implications

    gr-qc 2025-11 conditional novelty 6.0 of 10

    New analytic, GPR, and normalizing-flow kick models for black-hole mergers trained from q=1 to q≈200, with cluster-retention consequences.

  2. Unique and Universal Effects of Oscillation in Eccentric Orbital Binary Black Hole Mergers beyond Orbital Averaging

    gr-qc 2024-11 conditional novelty 5.0 of 10

    Eccentric binary black hole mergers show oscillations in radiated energy and remnant properties that trace to the orbital phase and disappear when the orbit is averaged over.

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