Is the X-ray continuum of active galactic nuclei of thermal origin?

Details Is the X-ray continuum of active galactic nuclei of thermal origin? Is the X-ray continuum of active galactic nuclei of thermal origin?

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983liaco..24..478s&link_type=abstract

IN: Quasars and gravitational lenses; Proceedings of the Twenty-fourth Liege International Astrophysical Colloquium, Cointe-Ougr

Astronomy and Astrophysics

Astronomy

Accretion Disks, Active Galactic Nuclei, Black Holes (Astronomy), Bremsstrahlung, X Ray Sources, Luminosity, Quasars, Seyfert Galaxies, Temperature Inversions

Scientific paper

The authors present a model of an optically thin bremsstrahlung source in the context of active galactic nuclei. Infalling matter is assumed to form an accretion disk around a supermassive black hole. Dissipation of turbulent energy above the disk results in the formation of a transition layer with inverted temperature gradient. The emitted thermal radiation has a power law spectrum from ⪉0.1 keV to 100 - 300 keV with photon energy index γ = 0.4 - 1. γ = 0.75 appears as a natural power law for Seyferts and QSOs.

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