A refined sub-grid model for black hole accretion and AGN feedback in large cosmological simulations

Understand

In large scale cosmological hydrodynamic simulations simplified sub-grid models for gas accretion onto black holes and AGN feedback are commonly used.

• Such models typically depend on various free parameters, which are not well constrained.
• We present a new advanced model containing a more detailed description of AGN feedback, where those parameters reflect the results of recent observations.
• The model takes the dependency of these parameters on the black hole properties into account and describes a continuous transition between the feedback processes acting in the so-called radio-mode and quasar-mode.