Supermassive black holes rarely travel alone. Most large galaxies hide one at the center, and when galaxies collide, the two ...

For a single supermassive black hole, extremely strong lensing occurs only when a star lies almost exactly along the line of ...

Supermassive black hole binaries form naturally when galaxies merge, but scientists have only confidently observed a very few of these systems that are widely separated. Black hole binaries that ...

Researchers propose a new technique to identify supermassive black hole binaries through gravitational lensing causing ...

Astronomers have been struggling to explain mysterious repeating bright radio pulses with unusually long periods. New research suggests that such flashes could be originating from exotic binary ...