271 citations · 2.2k across the 52 of their papers we have counts for
1 paper · 1 filter
Rosa Valiante, Bhaskar Agarwal, Melanie Habouzit +1
Observations of the most luminous quasars at redshift z>6 reveal the existence of numerous supermasssive black holes (>10^9 Msun) already in place about twelve billion years ago. I…