Physics
Scientific paper
Nov 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aps..ses..jd03w&link_type=abstract
American Physical Society, 66th Annual Meeting of the Southeastern Section of the American Physical Society November 7-9, 1999 C
Physics
Scientific paper
Over the past three decays, since the discovery of quasars, mounting observational evidence has accumulated that black holes indeed exist in nature. In this paper, we present a theoretical and numerical (Monte Carlo) analysis of Penrose scattering processes (Compton and γ-γ e*+e^- production) in the ergosphere of Kerr (rotating) black holes. These model calculations surprising reveal that the high energies and luminosities, the collimated jets about the polar axis, and the asymmetrical jets (which can be enhanced by relativistic Doopler beaming effects), all, are inherent properties of rotation black holes. When we assume that the accretion disk is a two-temperature bistable thin disk/ion corona, recently referred to as an advection dominated accretion flow (ADAF), energies as high as 54 GeV can be attained by these Perose processes along; and when relativistic beaming is included, energies in the TeV range can be achieved, agreeing with observations of some BL Lac objects. We show that the scattered escaping particles exhibit tightly wounded coil-like cone distributions (i.e. highly collimated jet distributions) about the polar axis, with helical polar angles of escape varying from 0.5^o to 30^o for the highest to lowest energy particles, respectively. We show also that the gravitomagnetic (GM) field, which causes the dragging of inertial frames, exerts a force acting on the momentum vectors of the incident and scattered particles, causing the particle emission to be asymmetrical above and below the equatorial plane. This Penrose energy extraction model can be applied to any size black hole irrespective of the mass. Also it is reemphasized why the Blandford and Znajek model is not tenable, as pointed out by Punsly and Coroniti (1989, 1990a, 1990b).
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