A New Tool for Finding Dark Matter Digs Up Nothing | Quanta Magazine
Physicists are devising clever new ways to exploit the extreme sensitivity of gravitational wave detectors like LIGO. But so far, they’ve seen no signs of exotica.
Hasnain says:
“In December, a team led by Hartmut Grote of Cardiff University reported in Nature that they had used a gravitational wave detector to look for scalar-field dark matter, a lesser-known candidate for the missing mass in and around galaxies. The team didn’t find a signal, ruling out a large class of scalar-field dark matter models. Now the stuff can only exist if it affects normal matter very weakly — at least a million times more weakly than was previously thought possible.”
Posted on 2022-03-25T04:25:14+0000