  In this paper, I present results from theoretical and numerical (Monte Carlo)
N-particle fully relativistic 4-D analysis of Penrose scattering processes
(Compton and gamma-gamma-->e-e+) in the ergosphere of a supermassive or stellar
mass Kerr (rotating) black hole. Specifically, the escape conditions and the
escaping orbits of the Penrose pair production (gamma-gamma-->e-e+) electrons
are analyzed, revealing that these particles escape along collimated, jet
geodesic trajectories encircling the polar axis. Such collimated vortical
tightly wound coil-like trajectories of relativistic particles are inherent
properties of rotating black holes. The helical polar angles of escape for
these e-e+ pairs range from 40 degrees to 0.5 degree (for the highest energy
particles). These jet distributions appear to be consistent with the
astrophysical jets of active galactic nuclei (AGNs) and galactic black holes
and suggest a mechanism for precollimation within the inner radius of the
dynamically stable accretion disk.
