Supermassive black hole binaries can be difficult to detect in many galaxies, but a new approach could find them by looking for the regular flashes of starlight caused by the gravitational lensing of these black holes.
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Supermassive black hole binaries can be difficult to detect in many galaxies, but a new approach could find them by looking for the regular flashes of starlight caused by the gravitational lensing of these black holes.