Discovery of HI gas in a young radio galaxy at $z=0.44$ using the Australian Square Kilometre Array Pathfinder

J. R. Allison, E. M. Sadler, V. A. Moss +100

We report the discovery of a new 21-cm HI absorption system using commissioning data from the Boolardy Engineering Test Array of the Australian Square Kilometre Array Pathfinder (A…