46 citations · 59 across the 2 of their papers we have counts for
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astro-ph.GA2020★ 46 cited
Improved Fe II emission line models for AGN using new atomic datasets
A. Sarkar, G. J. Ferland, M. Chatzikos +6
Understanding the Fe II emission from Active Galactic Nuclei (AGN) has been a grand challenge for many decades. The rewards from understanding the AGN spectra would be immense, inv…
astro-ph.GA2016
Ultraviolet emission lines of Si II in quasars --- investigating the "Si II disaster"
Sibasish Laha, Francis P. Keenan, Gary J. Ferland +2
The observed line intensity ratios of the Si II 1263 and 1307 Å multiplets to that of Si II 1814\,Å in the broad line region of quasars are both an order of magnitude larger than t…