Over-massive Central Black Holes in the Cosmological Simulations ASTRID and Illustris TNG50

Emma Jane Weller, Fabio Pacucci, Priyamvada Natarajan +1

Recent dynamical measurements indicate the presence of a central SMBH with mass $\sim 3\times 10^6{\mathrm{M}}_{\odot }$ in the dwarf galaxy Leo I, placing the system $\sim 50$ times abov…