Dark Matter Fingerprint in Black Hole Collision
Scientists may have found a hidden clue. It could be dark matter fingerprint inside a black hole collision. Gravitational waves from merging black holes might carry traces of this invisible material. Dark matter makes up most of the universe. However, it only interacts through gravity. That makes it very hard to detect. But black holes could change that.
Black Holes Reveal Dark Matter
When two black holes merge, they create gravitational waves. If they move through dense dark matter, those waves change slightly. Researchers from MIT developed a model to predict those changes. They tested 28 of the clearest gravitational wave events. Twenty-seven matched the vacuum scenario. But one signal stood out. It is called GW190728.This signal showed a “preference” for the dark matter model. In other words, it may carry a hidden fingerprint. The team stresses this is not a confirmed detection. Nevertheless, the method is promising. “We now have the potential to discover dark matter around black holes,” says co-author Soumen Roy. Using black holes to search for dark matter would be fantastic. It would allow scientists to probe dark matter at very small scales.
What Comes Next?
The collision involved two black holes. Their total mass was about 20 times that of our Sun. The team showed that such a system could merge inside a dense dark matter cloud. As a result, it would produce waves like GW190728.More data is needed. The LIGO-Virgo-KAGRA detectors keep collecting information. Therefore, future studies may confirm the finding. “It is an exciting time to search for new physics using gravitational waves,” Roy adds. The universe may finally reveal its biggest secret.
