In a potentially groundbreaking discovery, physicists from the US, UK, and Europe suggest that dark matter might have been detected using existing data from gravitational waves. They theorize that when two black holes collide within a dark matter cloud, the resulting gravitational waves could carry unique signatures indicating their environment. Analyzing data from 28 gravitational wave events, they found one event from July 2019 (GW190728) that exhibited patterns consistent with such an environment.
This finding, however, is not definitive proof of dark matter; the researchers stress the need for further investigation by independent teams. They note that traditional models often classify black hole mergers in dark matter fields as occurring in a vacuum, highlighting the importance of considering alternative interpretations.
The study opens new avenues for exploring dark matter, a mysterious substance interacting primarily through gravity. Its characteristics remain elusive, with various models proposing different forms, like ultralight particles or even primordial black holes. The research, published in Physical Review Letters, emphasizes the potential of using black hole collisions to further investigate dark matter.
