Invisible monsters <\/p>\n
Supermassive blackholes are normally found tucked away at the center of galaxies, gobbling up material with their strong gravitational pull. Some, however, end up drifting in the outer regions of their host galaxies.<\/p>\n
The only way to observe these wandering black holes is through a tidal disruption event, whereby a star passes too close to a blackhole and is ripped apart by its gravitational force. Astronomical surveys typically spot around 30 tidal disruption events each year, and scientists have only seen them taking place in galaxy cores.<\/p>\n
In November 2025, the Zwicky Transient Facility (ZTF) detected an unusual brightening in a galaxy located about 750 million light-years away. ZTF scans the entire northern sky every two days using the Palomar Observatory in Southern California. To help hone in on a specific light pattern emitted by a tidal disruption event, the researchers behind the new study developed an intelligent algorithm to come through the hundreds of thousands of celestial events detected by the survey.<\/p>\n
![\"Supermassive](\"https:\/\/www.newsbeep.com\/us\/wp-content\/uploads\/2026\/07\/supermassive-black-hole-flash-of-light-336x336.jpg\")
The supermassive black hole revealed itself with a flash of light, shown at the center of this image in blue. Credit: Robert David Stein <\/p>\n
\u201cOut of the half million flashes ZTF detects each night, our new artificial intelligence algorithm automatically recognized a flare that looked a lot like a tidal disruption event, despite its unusual location in the outskirts of a galaxy,\u201d Robert Stein, a research fellow at the University of Maryland and NASA\u2019s Goddard Space Flight Center and lead author of the new study, said in a statement<\/a>.<\/p>\n This particular event outshone its entire host galaxy in ultraviolet wavelengths for months, radiating with the light of about 10 billion suns, according to the study.<\/p>\n The researchers used other telescopes, such as the SOAR (Southern Astrophysical Research) telescope in Chile, to gather follow-up observations of the ultrabright flash. They then used NASA\u2019s Neil Gehrels Swift Observatory to look at wavelengths that are otherwise undetectable with ground-based telescopes to gather more data.<\/p>\n \u201cThe combination of all this data helped us rule out other explanations and confidently say it\u2019s a tidal disruption event, despite its strange location,\u201d Jonathan Carney, a doctoral student at the University of North Carolina at Chapel Hill and co-author of the new study, said in a statement.<\/p>\n Caught in the act <\/p>\n The data helped scientists identify that the culprit behind the bright flash was indeed a blackhole located about 30,000 light-years away from the center of its galaxy. It has around the same mass as the blackhole at the center of our galaxy, the Milky Way\u2019s Sagittarius A*, which is around four million times the mass of the Sun.<\/p>\n