AGN feedback using AMR cosmological simulations

TL;DR

This paper demonstrates how AGN feedback modeled with dual jet/heating mechanisms in cosmological AMR simulations can regulate black hole growth and influence galaxy and hot plasma properties, addressing key issues in galaxy formation modeling.

Contribution

Introduces a new dual jet/heating AGN feedback model in cosmological AMR simulations to better regulate black hole growth and galaxy evolution.

Findings

Feedback modifies cold baryon content in galaxies.

Feedback perturbs hot plasma properties.

Model effectively regulates black hole growth.

Abstract

Feedback processes are thought to solve some of the long-standing issues of the numerical modelling of galaxy formation: over-cooling, low angular momentum, massive blue galaxies, extra-galactic enrichment, etc. The accretion of gas onto super-massive black holes in the centre of massive galaxies can release tremendous amounts of energy to the surrounding medium. We show, with cosmological Adaptive Mesh Refinement simulations, how the growth of black holes is regulated by the feedback from Active Galactic Nuclei using a new dual jet/heating mechanism. We discuss how this large amount of feedback is able to modify the cold baryon content of galaxies, and perturb the properties of the hot plasma in their vicinity.