Pair plasmas in the central engine of active galactic nucleiAs 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.
Document ID
19940018168
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Tsuruta, Sachiko (Montana State Univ. Bozeman, MT, United States)
Tritz, B. G. (Montana State Univ. Bozeman, MT, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1993
Publication Information
Publication: ESA, Fourth International Toki Conference on Plasma Physics and Controlled Nuclear Fusion