3 papers
astro-ph.HE2021
X-ray spectroscopy in the microcalorimeter era III: line formation under Case A, Case B, Case C, and Case D in H- and He-like iron for a photoionized cloud
Priyanka Chakraborty, Gary Ferland, Marios Chatzikos +2
Future microcalorimeter X-ray observations will resolve spectral features in unmatched detail. Understanding the line formation processes in the X-rays deserves much attention. The…
physics.atom-ph2018
Suppression of Dielectronic Recombination Due to Finite Density Effects II: Analytical Refinement and Application to Density-dependent Ionization Balances and AGN Broad-line Emission
D. Nikolić, T. W. Gorczyca, K. T. Korista +6
We present improved fits to our treatment of suppression of dielectronic recombination at intermediate densities. At low densities, most recombined excited states eventually decay…
astro-ph.GA2016
H, He-like recombination spectra I: -changing collisions for hydrogen
F. Guzmán, N. R. Badnell, R. J. R. Williams +3
Hydrogen and helium emission lines in nebulae form by radiative recombination. This is a simple process which, in principle, can be described to very high precision. Ratios of He I…