Fe Kα equivalent-width mapping with 3D radiative transfer calculation: A general model and application to the RS Canum Venaticorum-type stars with XRISM/Resolve

Shun Inoue, Masahiro Tsujimoto, Takayuki Hayashi +4

The Fe K $\hat{I}\pm$ fluorescence line at 6.4 keV has long been used to probe the relative geometry between photoionizing X-ray sources and surrounding cold material in a wide range of as…