I am a Professor and Chair of the School of Physics and member of the Center for Relativistic Astrophysics in the College of Sciences at the Georgia Institute of Technology in Atlanta, U.S.A. My research is in computational astrophysics and numerical relativity. I use computers to solve the Einstein’s equations of General Relativity to study astrophysical phenomena were the curvature of space-time plays a fundamental role. I am currently focusing on computer simulations to investigate 1) the merger of black holes and/or neutron stars binary systems and their emission of gravitational waves, and 2) the disruption of stars by tidal forces from massive black holes.