Hybrid Wave-forms for Precessing binary black holes for LIGO data analysis

We construct hybrid waveforms of precessing binary black holes by
combining numerical relativity waveforms with analytical models. More
specifically, we use the analytical models for the slow inspiral phase
and numerical relativity waveforms for the faster inspiral, merger, and
ring-down phases. To hybridize, we align the two waveforms in the
co-precessing frame and then find appropriate rotations and time
translations that maximize the overlap of the two waveforms in a
hybridization interval. We discuss the accuracy and limitations for such
hybrids in the context of LIGO observations.