The research team will take another observation of this system in three or four years to confirm the motion and obtain a precise orbit. In the meantime, the team hopes that this discovery will encourage related work from astronomers around the world.

VLBA map of radio galaxy 0402+379 at 15 GHz. It hosts two supermassive black holes at its center, being denoted as C1 and C2. Credit: UNM Newsroom

The Very Long Baseline Array (VLBA) is a system of ten radio telescopes which are operated remotely from their Array Operations Center located in Socorro, New Mexico, as a part of the Long Baseline Observatory (LBO). These ten radio antennas work together as an array that forms the longest system in the world that uses very long baseline interferometry. The longest baseline available in this interferometer is about 8,611 kilometres (5,351 mi).