Arogue black hole is ablack hole that is not bound by any object's gravity, allowing them to float freely throughout the universe. Since black holes emit no light, the only ways to detect them aregravitational lensing orx-ray bursts that occur when they destroy an object.[2]
These are objects without a host galactic group, caused by collisions between two galaxies or when themerging of two black holes is disrupted. It has been estimated that there could be 12 rogue supermassive black holes on the edge of theMilky Way galaxy.[3]
In January 2022, a team of astronomers reported ofOGLE-2011-BLG-0462/MOA-2011-BLG-191, the first unambiguous detection and mass measurement of an isolatedstellar black hole using theHubble Space Telescope together with theMicrolensing Observations in Astrophysics (MOA) and theOptical Gravitational Lensing Experiment (OGLE).[4][1][5] This black hole is located 5,000light-years away, has a mass 7.1 times that of the Sun, and moves at about 45 km/s.[6] While there have been other candidates, they have been detected more indirectly.[7]
