Impact of supermassive black hole growth on star formation
  Supermassive black holes are found at the centre of massive galaxies. During
the growth of these black holes they light up to become visible as active
galactic nuclei (AGN) and release extraordinary amounts of energy across the
electromagnetic spectrum. This energy is widely believed to regulate the rate
of star formation in the black holes' host galaxies via so-called "AGN
feedback". However, the details of how and when this occurs remains uncertain
from both an observational and theoretical perspective. I review some of the
observational results and discuss possible observational signatures of the
impact of super-massive black hole growth on star formation.
