Reanalysis of data places new constraints on powerful extragalactic technosignatures

At the 2022 International Astronautical Congress in Paris, France, the University of Manchester and Breakthrough Listen (the initiative to find signs of intelligent life in the universe) announced a reanalysis of existing data that extends the search for extraterrestrial intelligence (SETI) into a new realm of parameter space and places stringent limits on the existence of extragalactic technosignatures.