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SUMMARY:Amplification of superkicks in black-hole binaries through orbital
  eccentricity - Ulrich Sperhake (University of Cambridge)
DTSTART:20191206T130000Z
DTEND:20191206T140000Z
UID:TALK132403@talks.cam.ac.uk
CONTACT:Nathan Johnson-McDaniel
DESCRIPTION:We present numerical-relativity simulations of eccentric mergi
 ng black hole binaries with initially anti-parallel spins lying in the orb
 ital plane (the so-called superkick configuration). Binary eccentricity bo
 osts the recoil of the merger remnant by up to 25%. The increase in the en
 ergy flux is much more modest\, and therefore this kick enhancement is mai
 nly due to asymmetry in the binary dynamics. Our findings might have impor
 tant consequences for the retention of stellar-mass black holes in star cl
 usters and supermassive black holes in galactic hosts.
LOCATION:Pavilion B Potter Room (B1.19)
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