Interstellar gas offers advantages when quantifying the structure of the resonances in disc galaxies. The gas is concentrated close to the disc mid-plane, making it easier to determine its in-plane velocity components, and it offers sharp emission lines for good velocity resolution. These properties are shared by atomic, molecular, and ionized gas

Recent observational studies suggest that feedback from active galactic nuclei (AGNs) may play an important role in the formation and evolution of low-mass dwarf galaxies, an issue that has received little attention from a theoretical perspective. We investigate this using two sets of 12 cosmological magneto-hydrodynamical simulations of the

Observational and theoretical evidence supports the idea that the influence of supermassive black hole growth on galaxies extends from the central tens of parsecs (localised, transient impact) to hundreds of kiloparsecs (global, long-term impact). Because of the completely different scales of these localised and global effects on the host galaxies