Observational Tests of Active Galactic Nuclei Feedback: An Overview of Approaches and Interpretation

The milky way total mass profile as inferred from Gaia DR2

The quenching and morphological evolution of central galaxies is facilitated by the feedback-driven expulsion of circumgalactic gas

The gas fractions of dark matter haloes hosting simulated ∼L⋆ galaxies are governed by the feedback history of their black holes