1.9k citations · 5.4k across the 24 of their papers we have counts for
1 paper · 1 filter
Yuexing Li, Lars Hernquist, Brant Robertson +8
The discovery of luminous quasars at redshift z ~ 6 indicates the presence of supermassive black holes (SMBHs) of mass ~10^9 Msun when the Universe was less than one billion years…