29 citations · 159 across the 19 of their papers we have counts for
3 papers · 1 filter
Probing the roles of orientation and multi-scale gas distributions in shaping the obscuration of Active Galactic Nuclei through cosmic time
Alba V. Alonso-Tetilla, Francesco Shankar, Fabio Fontanot +14
The origin of obscuration in Active Galactic Nuclei (AGN) is still an open debate. In particular, it is unclear what drives the relative contributions to the line-of-sight column d…
Obscuration beyond the nucleus: infrared quasars can be buried in extreme compact starbursts
Carolina Andonie, David M. Alexander, Claire Greenwell +14
In the standard quasar model, the accretion disk obscuration is due to the canonical dusty torus. Here, we argue that a substantial part of the quasar obscuration can come from the…
Host Dark Matter Halos of WISE-selected Obscured & Unobscured Quasars: Evidence for Evolution
Grayson C. Petter, Ryan C. Hickox, David M. Alexander +4
Obscuration in quasars may arise from steep viewing angles along the dusty torus, or instead may represent a distinct phase of supermassive black hole growth. We test these scenari…