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| HAL : in2p3-00184659, version 1 |
| Code Bibliographique ADS : 2006ASPC..360..277G |
| Fiche détaillée |  Récupérer au format |
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| AGN Variability from X-Rays to Radio Waves, Crimée : Ukraine (2004) |
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| X-ray Variability of AGN and the Flare Model |
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| R. W. GoosmannB. CzernyA.-M. DumontM. Mouchet1A. Rózanska |
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| (2007) |
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| 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 10^3-10^5 seconds. We discuss short variability time scales in the frame 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 and of a reprocessed Compton reflection component that we model with numerical radiative transfer simulations. The incident hard X-rays of the flare will heat up the atmosphere of the accretion disk and hence induce thermal expansion. Eventually, the flare source will be surrounded by an optically-thick medium, which should modify the observed spectra. |
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| 1 : | APC - AstroParticule et Cosmologie |
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| APC - Cosmologie et gravitation |
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| Thème(s) | : | Physique/Astrophysique/Cosmologie et astrophysique extra-galactique Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique |
| in2p3-00184659, version 1 | |
| http://hal.in2p3.fr/in2p3-00184659 | |
| oai:hal.in2p3.fr:in2p3-00184659 | |
| Contributeur : Simone Lantz | |
| Soumis le : Mercredi 31 Octobre 2007, 15:58:29 | |
| Dernière modification le : Mardi 19 Juin 2012, 17:25:29 | |
