Astronomers Discover a Wayward Black Hole Roaming Beyond Its Galaxy's Core

ng data from the MaNGA survey at the Apache Point Observatory, researchers detected this black hole in a dwarf galaxy about 230 million light-years away. Unlike typical supermassive black holes anchored at galactic centers, this one is displaced by nearly 1,000 parsecs (about 3,261 light-years) from the core. Remarkably, it is still actively accreting matter and producing a clear radio jet.

While most known supermassive black holes inhabit galactic nuclei, theoretical models have suggested that in dwarf galaxies—often regarded as “fossil” galaxies—gravitational interactions could eject black holes toward the periphery. This marks the first observationally robust case supporting that scenario.

High-resolution observations with the U.S. Very Long Baseline Array (VLBA) confirmed a brightness temperature of up to a billion Kelvin and parsec-scale jet structures. Long-term variability data ruled out the possibility of a supernova remnant. The black hole is estimated to have a mass of around 300,000 Suns, classifying it as an intermediate-mass black hole.

The finding demonstrates that even outside galactic centers, black holes can efficiently accrete material and influence their surroundings. It also offers new insights into how supermassive black holes may have grown rapidly in the early universe—possibly through “multi-centered” or distributed growth pathways.