Skip to Main content Skip to Navigation
Conference papers

X-ray variability of active galactic nuclei and the flare model

Abstract : 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 104 105 s. We discuss short variability time scales in the framework of the X-ray flare model, which assumes the release of a large hard X-ray flux above a small portion of the accretion disk. The resulting observed X-ray spectrum is composed of the primary radiation as well as a reprocessed/Compton reflection component that we model performing numerical radiative transfer simulations. We conduct Monte-Carlo simulations of large flare distributions across the disk including relativistic corrections of the observed radiation and discuss general implications on AGN spectra and their variability.
Complete list of metadata
Contributor : Simone Lantz <>
Submitted on : Wednesday, November 7, 2007 - 3:25:28 PM
Last modification on : Wednesday, October 21, 2020 - 4:32:15 PM

Links full text



R. W. Goosmann, B. Czerny, A.-M. Dumont, M. Mouchet, A. Rózanska, et al.. X-ray variability of active galactic nuclei and the flare model. AGN variability from the X-rays to the radio, Jun 2004, Nauchy, Crimé, Ukraine. pp.1398-1402, ⟨10.1016/J.ASR.2005.04.028⟩. ⟨in2p3-00185923⟩



Record views