Energy and angular momentum radiated for non head-on binary black hole   collisions
  We investigate the possible total radiated energy produced by a binary black hole system containing non-vanishing total angular momentum. For the scenearios considered we find that the total radiated energy does not exceed 1%. Additionally we explore the gravitational radiation field and the variation of angular momentum in the process. 
Osvaldo Moreschi, Alejandro Perez and Luis Lehner