Pair plasmas in the central engine of active galactic nuclei

Details Pair plasmas in the central engine of active galactic nuclei Pair plasmas in the central engine of active galactic nuclei

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ppcn.conf..137t&link_type=abstract

In ESA, Fourth International Toki Conference on Plasma Physics and Controlled Nuclear Fusion p 137-141 (SEE N94-22624 05-75)

Physics

Plasma Physics

Active Galactic Nuclei, Dense Plasmas, X Ray Spectra, Compton Effect, Gamma Ray Spectra, Nonthermal Radiation, Pair Production, X Ray Sources

Scientific paper

As the most promising model for the x-ray emission from a class of active galactic nuclei, represented by radio quiet quasars and Seyfert nuclei, a nonthermal pair cascade model, where soft photons are Comptonized by non thermal electron positron pair plasmas produced by gamma rays, is introduced. The simplest model of this kind, the 'homogeneous spherical cascade model', is presented. Many characteristics of this model are qualitatively similar to the homogeneous cascade model. An important difference is that gamma ray depletion is much more efficient in the surface cascade, and consequently this model satisfies the severe observational constraint imposed by the gamma ray background radiation.

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