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SUMMARY:Anomalies in the gravitational recoil of eccentric black-hole merg
 ers with unequal mass ratios - Miren Radia (DAMTP)
DTSTART:20210226T130000Z
DTEND:20210226T140000Z
UID:TALK156046@talks.cam.ac.uk
CONTACT:Justin Ripley
DESCRIPTION:The radiation of linear momentum imparts a recoil (or "kick") 
 to the center of mass of a merging black hole binary system. In 2019\, num
 erical relativity calculations showed that the addition of orbital eccentr
 icity can lead to an approximate 25% increase in recoil velocities for equ
 al-mass\, spinning binaries with spins lying in the orbital plane ("superk
 ick" configurations) arXiv:1910.01598]. I will present recent results [arX
 iv:2101.11015] obtained from numerical simulations investigating the impac
 t of nonzero eccentricity on the kick magnitude and gravitational-wave emi
 ssion of nonspinning\, unequal-mass black hole binaries. Like the spinning
  case\, nonzero eccentricities at merger can lead to kicks which are large
 r by up to ~25% relative to the\nquasicircular case. However\, we also fin
 d that the kick velocity has an oscillatory dependence on the eccentricity
 . I will discuss our interpretation of this phenomenon and our observation
 s.
LOCATION:Zoom
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