http://www.stsci.edu/institute/conference/blackholemergers Eight images. Four on the left appear to be stills from a computer simulation of a merger, calculated step by step using numerical GR methods. The four on the right seem to be actual photographs, some with false color showing temperature, of real things which resemble stages in the simulated merger of supermassive BHs. That is, the observed thing looks somewhat like what they got by running the numerical model. So it's suggestive.