Binary black holes coalescence: transition from adiabatic inspiral to   plunge
  Using two recent techniques giving non-perturbative re-summed estimates of the damping and of the conservative part of the dynamics of two-body systems, we describe the transition between adiabatic inspiral and plunge in binary non-spinning black holes moving along quasi-circular orbits. 
Alessandra Buonanno and Thibault Damour