Modeling of variations in X-ray emission from accretion disks of active galaxies

Details Modeling of variations in X-ray emission from accretion disks of active galaxies Modeling of variations in X-ray emission from accretion disks of active galaxies

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008pobeo..84..467j&link_type=abstract

Publications of the Astronomical Observatory of Belgrade, vol. 84, pp. 467-470

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The observed profiles of the Fe K alpha line in case of some Active Galactic Nuclei (AGN) show certain variations. In this paper we propose a model of disk emissivity variability to explain the observed Fe K alpha line profiles. The disk emission was analyzed using the ray-tracing method in Kerr metric, assuming a modification of the power-law emissivity which allows us to include perturbations in disk emission. When the emissivity law is modified in such way, we find that the corresponding variations in disk emission can explain the observed Fe K alpha line profiles if the line is emitted from the innermost part of the accretion disk.

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