Volume 387, Number 1, May III 2002
|Page(s)||63 - 75|
|Section||Cosmology (including clusters of galaxies)|
|Published online||15 May 2002|
Reprocessing of X-rays in AGN
I. Plane parallel geometry – test of pressure equilibrium
Observatoire de Paris-Meudon, DAEC, Meudon, France
2 Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland
Corresponding author: A.-M. Dumont, email@example.com
Accepted: 5 March 2002
We present a model of the vertical stratification and the spectra of an irradiated medium under the assumption of constant pressure. Such a solution has properties intermediate between constant density models and hydrostatic equilibrium models, and it may represent a flattened configuration of gas clumps accreting onto the central black hole. Such a medium develops a hot skin, thicker than hydrostatic models, but thinner than constant density models, under comparable irradiation. The range of theoretical values of the index is comparable to those from hydrostatic models and both are close to the observed values for Seyfert galaxies but lower than in quasars. The amount of X-ray Compton reflection is consistent with the observed range. The characteristic property of the model is a frequently multicomponent iron Kα line.
Key words: radiative transfer / accretion disks / galaxies: active / galaxies: Seyfert / X-rays: stars / X-rays: galaxies
© ESO, 2002
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