Lensing of space time around a black hole. At Oxford we study black holes observationally and theoretically on all size and time scales - it is some of our core work. Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES. Christopher DuncanVisitor Sub departmentAstrophysics Research groupsBeecroft Institute for Particle Astrophysics and CosmologyEuclid christopher.duncan@physics.ox.ac.uk Telephone: 01865(2)83016 Denys Wilkinson Building, room 555A About Publications