X-UDS: The Chandra Legacy Survey of the UKIDSS Ultra Deep Survey Field
Dale D. Kocevski et al 2018 ApJS 236 48
The publicly available X-UDS survey results, obtained with Chandra, suggest that the intrinsic Compton-thick active galactic nucleus fraction is 30%–35% over a wide range in redshift (z = 0.1–3).