Ionized Iron Lines in X-ray Reflection Spectra

Abstract

We present results from new calculations of the X-ray reflection spectrum from ionized accretion discs. These computations improve on our previous models by including the condition of hydrostatic balance in the vertical direction, following the work of Nayakshin, Kazanas & Kallman. We find that an ionized Fe K$α$ line is prominent in the reflection spectra for a wide variety of physical conditions. The results hold for both gas and radiation pressure dominated discs and when the metal abundances have been varied.

4 pages, to appear in the proceedings of "Spectroscopic Challenges of Photoionized Plasmas", G.J. Ferland & D.W. Savin, eds. A code update caused changes in the figures. Conclusions unchanged