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Amplification of superkicks in black-hole binaries through orbital eccentricity

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Gerosa, Davide 
Berti, Emanuele 

Abstract

We present new numerical-relativity simulations of eccentric merging black holes with initially anti-parallel spins lying in the orbital plane (the so-called 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.

Description

Keywords

gr-qc, gr-qc, astro-ph.HE

Journal Title

Physical Review D: Particles, Fields, Gravitation and Cosmology

Conference Name

Journal ISSN

1550-2368
2470-0029

Volume Title

101

Publisher

American Physical Society

Rights

All rights reserved
Sponsorship
European Research Council (646597)
European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (690904)
Science and Technology Facilities Council (ST/P000673/1)
Science and Technology Facilities Council (ST/R002452/1)
Science and Technology Facilities Council (ST/R00689X/1)
STFC (1628481)
Science and Technology Facilities Council (ST/M007065/1)
STFC (ST/M007073/1)
STFC (ST/T001550/1)