MIT-Led Team Flags 1 of 28 Gravitational-Wave Signals as Possible Dark Matter Imprint
Updated
Updated · MIT News · May 12
MIT-Led Team Flags 1 of 28 Gravitational-Wave Signals as Possible Dark Matter Imprint
5 articles · Updated · MIT News · May 12
GW190728 emerged as the only candidate among 28 of the clearest LIGO-Virgo-KAGRA events to match a new model for black-hole mergers occurring in dense dark matter rather than vacuum.
The MIT-led researchers built waveform predictions for binaries moving through light-scalar dark matter, where superradiance around spinning black holes could amplify dark matter enough to alter the merger signal.
27 signals fit standard vacuum expectations, while GW190728—a July 28, 2019 event from a roughly 20-solar-mass black-hole binary—showed only a statistical preference, not proof of dark matter.
The team said independent checks are still needed, but argued the method could keep future LVK data from misclassifying mergers in dark-matter environments as ordinary vacuum events.
If confirmed in later observations, the approach could let gravitational-wave detectors probe dark matter around black holes at far smaller scales than existing methods.
A lone signal hints at dark matter around black holes. Is this a breakthrough or just a statistical ghost?
If black holes act as dark matter amplifiers, what other cosmic secrets will gravitational waves soon reveal?
Scientists hunt dark matter with waves, stars, and quantum sensors. Which method will solve this cosmic mystery first?
Searching for Dark Matter in Gravitational Wave GW190728: A Novel Analytical Approach and Its Scientific Impact
Overview
Physicists at MIT and in Europe have developed a novel model to search for dark matter by analyzing gravitational waves from colliding black holes. This innovative approach was applied to data from the LVK collaboration, focusing on the GW190728 event detected in 2019. The technique offers a new way to look for dark matter, but the model relies on significant assumptions and uses a Newtonian framework, even for highly relativistic black hole mergers. As a result, any findings are considered tentative, highlighting the need for further research and careful interpretation of the results.