Formation of<i>z</i>∼6 Quasars from Hierarchical Galaxy Mergers
Formation of<i>z</i>∼6 Quasars from Hierarchical Galaxy Mergers
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 old. This finding presents several challenges for theoretical models. Here, we present the first multi-scale simulations that, together with …