The Drivers of the Decline in Supermassive Black Hole Growth at $z<2$

Zhibo Yu, W. N. Brandt, Fan Zou +4

It is well established that cosmic supermassive black hole (SMBH) growth peaks at $z\approx 1.5-2$, followed by a strong decline of $\approx 1-1.5\mathrm{dex}$ toward the present day, w…