Time-dependent Hypercritical Accretion onto Black Holes
  Results are presented from a time-dependent, numerical investigation of super-Eddington spherical accretion onto black holes with different initial conditions. We have studied the stability of stationary solutions, the non-linear evolution of shocked models and the time-dependent accretion from an expanding medium. 
Luca Zampieri (University of Illinois at Urbana-Champaign)