Piotr Jaranowski is an Associate Professor in the Faculty of Physics at the University of Bia ystok, Poland. He has been a visiting scientist at the Max Planck Institute for Gravitational Physics and the Friedrich Schiller University, both in Germany, and the Institut des Hautes Etudes Scientifiques, France. He currently works in the field of gravitational-wave data analysis and general-relativistic problem of motion.