universetoday.com/articles/new-observations-show-how-black-holes-stir-up-material-surrounding-a-galaxy New Observations Show How Black Holes Stir Up Material Surrounding A Galaxy
Jets from supermassive black holes ionize gas much farther out than expected, heating the halo around a galaxy that would otherwise cool and fall inward to feed new stars. The finding, drawn from DESI and LOFAR data on hundreds of galaxies with active jets, points to a subtle way a black hole can suppress star formation from afar.
— via Universe Today, Brian Koberlein