Roger Blandford

Caltech

ADIABATIC ACCRETION ONTO BLACK HOLES

When gas is supplied to a black hole at a rate that is either
much smaller or much larger than the Eddington rate, it is   
unable to radiate effectively. It will be argued that under  
these circumstances, the energy and angular liberated by the 
infalling gas is carried off by a powerful outflow. The
implications of this view for observations of the Galactic
Center, Galactic Superluminal Sources, Broad Absorption Line
Quasars and X-ray Transients will be briefly discussed.