The population of infant black holes in the early Universe revealed by JWST
One of the most exciting findings obtained by the James Webb Space Telescope has been the discovery of a large population of massive black holes within the first few billion years after the Big Bang. I will give an overview of the characterization of these infant black holes with some of the most extensive JWST spectroscopic programmes. These observations are revealing puzzling properties, such as large black hole to stellar mass ratios, accretion and circumnuclear properties very different from the population of accreting black holes previously known, and a large population of dual black holes, possibly in the process of merging.