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A Model of the Broad-Band Continuum of NGC 5548

Published online by Cambridge University Press:  25 May 2016

P. Magdziarz  and
O. Blaes
P. Magdziarz
Affiliation:
Astronomical Observatory, Jagiellonian University Orla 171, 30-244 Cracow, Poland
O. Blaes
Affiliation:
Department of Physics, University of California Santa Barbara, CA 93106, USA

Abstract

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We discuss a model of the central source in Seyfert 1 galaxy NGC 5548. The model assumes a three phase disk structure consisting of a cold outer disk, a hot central disk constituting a Comptonizing X/γ source, and an intermediate unstable and complex phase emitting a soft excess component. The model qualitatively explains broad-band spectrum and variability behavior assuming that the soft excess contributes significantly to the continuum emission and drives variability by geometrical changes of the intermediate disk zone.

Type
Session 3: Diagnostics of High Gravity Objects with X- and Gamma Rays
Information
Symposium - International Astronomical Union , Volume 188: The Hot Universe , 1998 , pp. 430 - 431
Copyright
Copyright © Kluwer 1998 

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