| Issue |
A&A
Volume 387, Number 1, May III 2002
|
|
|---|---|---|
| Page(s) | 63 - 75 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20020368 | |
| Published online | 15 May 2002 | |
Reprocessing of X-rays in AGN
I. Plane parallel geometry – test of pressure equilibrium
1
Observatoire de Paris-Meudon, DAEC, Meudon, France
2
Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland
Corresponding author: A.-M. Dumont, bcz@camk.edu.pl
Received:
23
January
2002
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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