2024/12/02 by Chamani M. Gunasekera, P. A. M. van Hoof, Gunasekera, Chamani M. +5
Chemistry · Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Inorganic Fluorides and Related Compounds #Muon and positron interactions and applications #Superconducting and THz Device Technology
paper · pdf · doi:10.48550/arxiv.2412.01606
openalex publication_date 2024/12/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
With the launch of the XRISM microcalorimeter mission, space-based X-ray observations will achieve a record spectral resolving power of R≡ E/ΔE∼1200. With this resolving power, emission features associated with fine-structure energy levels of some species will be resolved, sometimes for the first time. The plasma code, Cloudy, was not originally designed for high-resolution X-ray spectroscopy and throughout its history did not resolve fine-structure components of Lyman lines. Here we expand Cloudy to resolve these fine-structure energy levels and obtain predicted X-ray spectra that match the resolution of new microcalorimeter observations. We show how the Lyman lines can be used as column density indicators in the hot X-ray emitting gas in a cluster of galaxies such as Perseus, and examine their sensitivity to external radiation fields and turbulence.