Iron K fluorescent lines from relativistic, ionized discs

Astronomy and Astrophysics – Astronomy

Scientific paper

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Accretion, Accretion Discs, Line: Profiles, Radiative Transfer, Galaxies: Active, X-Rays: Galaxies, X-Rays: Stars

Scientific paper

We present detailed Monte Carlo calculations of the iron Kalpha lines from X-ray photoionized, relativistic accretion discs. The vertical ionization structure of the matter has been taken into account, and Compton scattering and resonant absorption have been treated in detail. We find that the ratio of lines emitted by different iron ions depends, apart from the ionization parameter, on the disc inclination angle. The line profiles with relativistic corrections have also been calculated; they can be used to distinguish between different source geometries.

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