On Fe Kα line emission by photo-ionized accretion disks

Details On Fe Kα line emission by photo-ionized accretion disks On Fe Kα line emission by photo-ionized accretion disks

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001adspr..28..425n&link_type=abstract

Advances in Space Research, Volume 28, Issue 2-3, p. 425-431.

Physics

1

Scientific paper

We discuss (1) the importance of ionization physics in the interpretation of X-ray reflection features seen in spectra of most AGN and GBHCs. We show that changes in the ionization structure of the reflector with changes in the X-ray flux or its spectral shape may be confused with changes in the geometry of the accretion flow when studied with simpler (incomplete) X-ray reflection models. (2) In addition, we point out that iron lines from time-dependent accretion disks in their ``quiescent'' states should be narrow even if the cold accretion disk extends to the last stable orbit.

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