Supermassive Black Hole Discoveries & Press Coverage
Discoveries and research highlights featured by NASA and partner institutions.
Featured Release
NASA's Hubble & Chandra Discover a Dual Supermassive Black Hole System
Astronomers have identified the closest-separation pair of actively accreting supermassive black holes in the nearby universe confirmed through multiwavelength observations, using data from Hubble, Chandra, and the Very Large Array (VLA) telescopes. Separated by just ~300 light-years, the system offers a rare view of the final stages of black hole pairing during a galaxy merger.
This view is not a common occurrence in the nearby universe, and tells us there’s something unusual happening within the galaxy.
— Anna Trindade Falcão
Why This System Matters
Dual active galactic nuclei provide a direct window into how supermassive black holes grow during galaxy mergers. As galaxies collide, their central black holes are brought into close proximity, eventually forming gravitationally bound systems that may later merge and emit gravitational waves
Systems at such small separations are rarely observed, particularly in the nearby universe. This discovery offers a uniquely well-resolved, multiwavelength view of the physical processes that regulate black hole growth and shape galaxy evolution.
My contribution
I led the identification and interpretation of the dual supermassive black hole system through multiwavelength analysis. By combining Hubble’s spatial resolution with Chandra’s X-ray sensitivity, we confirmed that the two bright sources correspond to distinct accreting black holes, rather than a single obscured nucleus.
Credit: NASA’s Goddard Space Flight Center
Lead Producer: Paul Morris
Artist’s concept of a dual supermassive black hole system in a merging galaxy.
Credit: NASA, ESA, Joseph Olmsted (STScI)
HST observations reveal multiple bright sources at the galaxy’s center, while Chandra X-ray data identify two of them as actively accreting supermassive black holes.
Credit: NASA, ESA, Anna Trindade Falcão (CfA); Image Processing: Joseph DePasquale (STScI)
The two supermassive black holes were once at the core of their respective host galaxies. A merger between the galaxies brought the black holes into close proximity.
They will continue to spiral closer together until they eventually merge — in perhaps 100 million years — rattling the fabric of space and time as gravitational waves.