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. Jake RuleGraduate Student Research themeAstronomy and astrophysics Sub departmentAstrophysics Research groupsPulsars, transients and relativistic astrophysics jake.rule@physics.ox.ac.uk About I'm a 1st year DPhil student studying black hole accretion disks under the supervison of Prof. Steven Balbus. Research interests Accretion, Black Holes, Simulation