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. Guangwen ChenPostdoctoral Research Assistant Research themeAstronomy and astrophysics Sub departmentAstrophysics Research groupsGalaxy formation and evolutionThe Square Kilometre Array (SKA) guangwen.chen@physics.ox.ac.uk Telephone: 07593832127 Denys Wilkinson Building, room Dalitz 3 ORCID About Publications Research interests Radio Astronomy Artificial Intelligence Galaxy Formation