Covering factors of the dusty obscurers in radio-loud and radio-quiet quasars
TLDR
In this paper, the authors compare covering factors of circumnuclear dusty obscurers in radio-loud and radio-quiet quasars, and find that covering factors are on average slightly smaller in FR II radio sources than in radio quiet sources, but this difference is statistically significant only for the highest Eddington ratios.Abstract:
We compare covering factors of circumnuclear dusty obscurers in radio-loud and radio-quiet quasars. The radio-loud quasars are represented by a sample of FR II quasars obtained by cross-matching a catalog of the FR II radio sources selected by van Velzen et al. with the SDSS DR7 catalog of quasars. Covering factors of FR II quasars are compared with covering factors of the radio-quiet quasars matched with them in redshift, black hole mass, and Eddington-ratio. We found that covering factors, proxied by the infrared-to-bolometric luminosity ratio, are on average slightly smaller in FR II quasars than in radio-quiet quasars, however, this difference is statistically significant only for the highest Eddington ratios. For both samples, no statistically significant dependence of a median covering factor on Eddington ratio, black hole mass, nor redshift can be claimed.read more
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The column density distribution of hard X-ray radio galaxies
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Comparison of hard X-ray spectra of luminous radio galaxies and their radio-quiet counterparts
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The CaFe Project: Optical Fe II and Near-Infrared Ca II triplet emission in active galaxies -- simulated EWs, the co-dependence of cloud sizes and metal content
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Comparison of SEDs of very massive radio-loud and radio-quiet AGN
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