About the Author The astrophysicists ric Gourgoulhon is CNRS Senior Scientist (directeur de recherche) at the Laboratoire Univers et Th orie LUTH of the Observatoire de Paris.
A specialist in Special and General relativity, an experienced lecturer and author of two books on those subjects, ric Gourgoulhon works on black holes,.
He was awarded the CNRS silver medal 2012 for "the originality, quality and importance of his work, of both national and international repute".
About the Author The astrophysicists ric Gourgoulhon is CNRS Senior Scientist (directeur de recherche) at the Laboratoire Univers et Th orie LUTH of the Observatoire de Paris