8 papers
X-ray Variability of Active Galactic Nuclei and the Flare Model
R. W. Goosmann, B. Czerny, A. -M. Dumont +4
Short-term variability of X-ray spectra has been reported for several Active Galactic Nuclei. Significant X-ray flux variations are observed within time scales down to 10^4 -- 10^5…
X-ray Variability of AGN and the Flare Model
R. W. Goosmann, B. Czerny, A. -M. Dumont +2
Short-term variability of X-ray continuum spectra has been reported for several Active Galactic Nuclei. Significant X-ray flux variations are observed within time scales down to 10…
Models for the UV-X emission in AGN : influence of different parameters
S. Coupé, M-C. Artru, S. Collin +2
We present the results of computations performed with a new photoionisation-transfer code designed for hot Compton thick media. Presently the code solves the transfer of the contin…
A code for optically thick and hot photoionized media
A. -M. Dumont, A. Abrassart, S. Collin
We describe a code designed for hot media {(T } a few 10 K), optically thick to Compton scattering. It computes the structure of a plane-parallel slab of gas in thermal an…
X-ray emitting-absorbing media in Seyfert 1 galaxies
M. Mouchet, A. Abrassart, D. Porquet +2
Seyfert galaxies have been shown to exhibit a large variety of features in their X-ray spectra from which the environment of the central engine can be deduced. We focus on the two…
Accretion and Emission Processes in AGN: the UV-X Connection
S. Collin, A. Abrassart, B. Czerny +2
The main characteristics of the average spectrum of radio quiet AGN in the UV and X-ray range are reviewed, and the emission mechanisms are discussed in the framework of accretion…