  Theoretical and numerical (Monte Carlo) N-particle computer model simulations
show that Penrose Compton scattering (PCS) near the event horizon and Penrose
pair production (PPP) at or near the photon orbit, in the ergosphere of a
supermassive rotating black hole, can generate the necessary energy-momentum
spectra to explain the origin of the mysterious fluxes of ultrarelativistic
electrons, inferred from observations to emerge from the cores of Quasars 3C
279 and 3C 273, and other active galactic nuclei (AGNs). Particles from an
accretion disk surrounding the black hole fall into the ergosphere and scatter
off particles that are in trapped or bound unstable orbits. The Penrose
mechanism allows rotational energy of a Kerr black hole, and energy-momentum
produced by its strong gravitational field, to be extracted by scattered
particles escaping from the ergosphere to infinity. The results of these model
calculations show that the Penrose mechanism is capable of producing the
observed high energy particles (~GeV) emitted by quasars and other AGNs. This
mechanism can extract hard X-ray/gamma-ray photons from PCS of initially
infalling low energy UV/soft X-ray photons by target orbiting electrons in the
ergosphere. The PPP allows the escape of relativistic e-e+ pairs--produced by
infalling low energy photons interacting with highly blueshifted target photons
at the photon orbit. Moreover, and importantly, the emission of scattered
particles by this mechanism naturally produces relativistic jets collimated
about the polar axis, and in most cases one-sided or asymmetrical, agreeing
with observations of AGNs. In these fully relativistic calculations, the
energy-momentum four vectors (or four-momenta) of the scattered particles are
obtained.(ABRIDGED)
