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SUMMARY:Averaging the average: new insights on the dynamics of precessing 
 black-hole binaries - Davide Gerosa\, DAMTP\, CMS
DTSTART:20141112T161500Z
DTEND:20141112T171500Z
UID:TALK55053@talks.cam.ac.uk
CONTACT:Ciaran Hughes
DESCRIPTION:The dynamics of precessing black-hole binaries in the post-New
 tonian regime is deeply characterized by a timescale hierarchy: the orbita
 l timescale is very short compared to the spin-precession timescale which\
 , in turn\, is much shorter than the radiation reaction timescale on which
  the orbit is shrinking due to gravitational-wave emission. The binary dyn
 amics is typically studied in an orbit-averaged fashion: one only cares ab
 out the orbit itself\, not the instantaneous position of each black hole. 
 Here we also average over the precessional time\, thus considering the pre
 cessional cones "as a whole"\, without tracking the spin's secular motion.
  These solutions improve our understanding of spin precession in much the 
 same way that the conical sections for Keplerian orbits provide additional
  insights beyond Newton's 1/r^2 law. More on arXiv:1411.0674.
LOCATION:CMS\, Potter Room (B1.19) 
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