Feedback from Active Galactic Nuclei in Galaxy Groups

The co-evolution between supermassive black holes and their environment is most directly traced by the hot atmospheres of dark matter halos. cooling atmosphere supplies central regions with fresh gas, igniting active galactic nuclei (AGN) long duty cycles. Outflows from engine tightly couple surrounding gaseous medium provide dominant heating source preventing runaway carving cavities driving shocks across medium. AGN feedback loop a key feature all modern galaxy evolution models. Here, we review our knowledge process in specific context groups. Galaxy groups are uniquely suited to constrain mechanisms governing cooling–heating balance. Unlike more massive halos, energy that supplied intragroup can exceed gravitational binding halo gas particles. We report on state-of-the-art observations phenomenon theoretical models heating-cooling balance also describe how impacts large-scale baryon distributions. Finally, discuss new instrumentation will answer open questions topic.