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Modeling the X-ray fractional variability spectrum of Active Galactic Nuclei using multiple flares

R. W. Goosmann·M. Dovciak·V. Karas·B. Czerny·M. Mouchet·G. Ponti
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Abstract

Using Monte-Carlo simulations of X-ray flare distributions across the accretion disk of active galactic nuclei (AGN), we obtain modeling results for the energy-dependent fractional variability amplitude. Referring to previous results of this model, we illustrate the relation between the shape of the point-to-point fractional variability spectrum, F_pp, and the time-integrated spectral energy distribution, F_E. The results confirm that the spectral shape and variability of the iron Kalpha line are dominated by the flares closest to the disk center.

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R. W. Goosmann, M. Dovciak, V. Karas, B. Czerny, M. Mouchet, G. Ponti. 2007-01-07. Modeling the X-ray fractional variability spectrum of Active Galactic Nuclei using multiple flares. https://arxiv.org/abs/astro-ph/0701164

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