A Unified Dark-Matter--Driven Relativistic Bondi Route to Black-Hole Growth from Stellar to Supermassive Scales

Chian-Shu Chen, Feng-Li Lin

Observations of luminous quasars at $z\gtrsim 7$ reveal supermassive black holes (SMBHs) with inferred masses $M_{\mathrm{BH}}\sim 10^9{M}_{\odot }$ formed within the first $\sim 700$~Myr o…