Preparing Cloudy for the X-ray Microcalorimeter Era

The Hitomi mission has inaugurated the era of high resolution X-ray spectroscopy. It has also brought to focus areas in the modeling of X-ray plasmas that prevent the full potential of Hitomi, and the forthcoming XRISM mission, from being met. We propose to address these limitations in our pan-spectral synthesis code Cloudy. This will enable high-fidelity spectral predictions to be made in ab initio simulations. Cloudy also permits radiative excitations to be taken into account, and so offers a complementary view to that afforded by the commonly used X-ray spectral fitting packages.