Cornell physics and astrophysics professor Saul Teukolsky has been using supercomputers to solve Einstein's equations for black hole mergers for much of his career. Teukolsky and the Cornell-founded Simulation of eXtreme Spacetimes (SXS) collaboration group have been calculating and completing a full catalog of theoretical solutions since 2000, when supercomputers first became capable of the task.
The LIGO (Laser Interferometer Gravitational-Wave Observatory) and Virgo group confirmed that the waves came from a black hole merger by comparing their data with a theoretical model developed at Cornell.
"The LIGO announcement describes one of the greatest scientific discoveries of the past 50 years. Gravitational waves have been a theoretical prediction of Einstein's general theory of relativity for the past 100 years.
"Our group has been solving Einstein's equations on supercomputers to predict the precise form of the signal that should be seen. Our theoretical predictions lie right on top of the experimentalist's measurements – an exciting confirmation of general relativity.
"Finally these waves have been detected on Earth with an unbelievably sensitive experiment. And, surprisingly, the source of the waves is a system of two black holes in orbit around each other, that spiral inward and smash together."