35 citations · 69 across the 3 of their papers we have counts for
3 papers
astro-ph.HE2015★ 25 cited
Accurate determination of the free-free Gaunt factor. II - relativistic Gaunt factors
P. A. M. van Hoof, G. J. Ferland, R. J. R. Williams +4
When modelling an ionised plasma, all spectral synthesis codes need the thermally averaged free-free Gaunt factor defined over a very wide range of parameter space in order to prod…
astro-ph.CO2012★ 35 cited
Two-Component Structure of the Hbeta Broad-Line Region in Quasars. I. Evidence from Spectral Principal Component Analysis
Chen Hu, Jian-Min Wang, Luis C. Ho +3
We report on a spectral principal component analysis (SPCA) of a sample of 816 quasars, selected to have small Fe II velocity shifts with spectral coverage in the rest wavelength r…
astro-ph.CO2012★ 9 cited
Intervening BLR Clouds' Effects on Optical/UV Spectrum
Ye Wang, Gary J. Ferland, Chen Hu +2
Recent x-ray observations of Mrk 766 suggest that broad emission line region clouds cross our line of sight and produce variable x-ray absorption. Here we investigate what optical/…