A Radio Galaxy at [CLC][ITAL]z[/ITAL][/CLC] = 5.19
A Radio Galaxy at [CLC][ITAL]z[/ITAL][/CLC] = 5.19
We report the discovery of the most distant known active galactic nucleus, the radio galaxy TN J0924-2201 at z=5.19. The radio source was selected from a new sample of ultrasteep spectrum sources, has an extreme radio spectral index α=-1.63, and is identified at near-IR wavelengths with a very faint, K=21.3±0.3 …