The spins of the black holes are anti-parallel, oriented in the orbital plane, and are of magnitude 0.5. In this configuration, the kick of the final black hole has been observed in simulations by Campanelli et al. to depend on the phase of the binary at the time of merger; more specifically, they found that the kick depended sinusoidally upon the angle between the initial momenta of the BHs and the spins. This simulation will be detailed in a future publication in progress; it is discussed in a paper submitted to Phys. Rev. Lett., available at [arXiv:1012.4869].

Movie displaying the evolution of Enn, the tendexes, in the apparent horizons

Movie displaying the evolution of Bnn, the vortexes, in the apparent horizons