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On Time‐dependent X‐Ray Reflection by Photoionized Accretion Disks: Implications for Fe Kα Line Reverberation Studies of Active Galactic Nuclei
2002
Astrophysical Journal
We perform a first study of time-dependent X-ray reflection in photo-ionized accretion disks. We assume a step-functional change in the X-ray flux and use a simplified prescription to describe the time evolution of the illuminated gas density profile in response to changes in the flux. We find that the dynamical time for re-adjustment of the hydrostatic balance is an important relaxation time scale of the problem since it affects evolution of the ionization state of the reflector. Because of
doi:10.1086/338333
fatcat:fr2tjkq47rfpzcmrolica6gmdq