Planck reveals link between active galaxies and their dark matter environment

https://phys.org/news/2019-04-planck-reveals-link-galaxies-dark.html

study by Plank astronomy satellite links dark matter with black holes/ Quasars are basically young active galactic nuclei, and these are almost certainly central black holes eating lots of stars and dust/gas.

This study strongly suggests, to me perhaps, that dark matter is made by black holes munching on ordinary matter.