Rogue black hole

A rogue black hole (also termed a free-floating (FFP), interstellar, nomad, orphan, unbound or wandering black hole) is an interstellar object without a host galactic group.[1] They are caused by collisions between two galaxies or when the merging of two black holes is disrupted.[2] It has been estimated that there could be 12 rogue black holes in the Milky Way galaxy.[2]

MOA-2011-BLG-191/OGLE-2011-BLG-0462

In January 2022, a team of astronomers reported the first unambiguous detection and mass measurement of an isolated stellar black hole with the Hubble Space Telescope.[3][4] This black hole is located 5,000 light-years away, weighs 7.1 times that of the Sun, and moves at about 45 km/s.[5]

See also

References
  1. "Rogue Black Hole Observed for the First Time - ExtremeTech". www.extremetech.com. Retrieved 2022-02-10.
  2. Ben Turner (2021-08-27). "Rogue black holes could be wandering at the edges of the Milky Way". livescience.com. Retrieved 2022-02-10.
  3. Sahu, Kailash C.; Anderson, Jay; Casertano, Stefano; Bond, Howard E.; Udalski, Andrzej; Dominik, Martin; Calamida, Annalisa; Bellini, Andrea; Brown, Thomas M.; Rejkuba, Marina; Bajaj, Varun (2022-01-31). "An Isolated Stellar-Mass Black Hole Detected Through Astrometric Microlensing". arXiv:2201.13296 [astro-ph.SR].
  4. Browne, Ed (2022-02-08). "First ever rogue black hole spotted zooming through space at 28 miles per second". Newsweek. Retrieved 2022-02-10.
  5. "The First Rogue Black Hole has Been Discovered, and it's Only 5,000 Light-Years Away". Universe Today. 2022-02-06. Retrieved 2022-02-10.
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