Rogue black hole

Short description: Interstellar or intergalactic object

Animated astrometric observations of the gravitational microlensing of the interstellar MOA-2011-BLG-191/OGLE-2011-BLG-0462[1]

A rogue black hole is a black 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 are gravitational lensing or x-ray bursts that occur when they destroy an object.[2]

## Contents

* 1 Intergalactic rogue black holes
* 2 Interstellar rogue black holes
* 2.1 Examples
* 3 See also
* 4 References

## Intergalactic rogue black holes

These are objects without a host galactic group, caused by collisions between two galaxies or when the merging of two black holes is disrupted. It has been estimated that there could be 12 rogue supermassive black holes on the edge of the Milky Way galaxy.[3]

## Interstellar rogue black holes

### Examples

In January 2022, a team of astronomers reported of OGLE-2011-BLG-0462/MOA-2011-BLG-191, the first unambiguous detection and mass measurement of an isolated stellar black hole using the Hubble Space Telescope together with the Microlensing Observations in Astrophysics (MOA) and the Optical Gravitational Lensing Experiment (OGLE).[4][1][5] This black hole is located 5,000 light-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]

## See also

* Rogue star
* Rogue planet
* Rogue extragalactic planets
* Rogue comet
* Tidally detached exomoon
* Stellar black hole
* Primordial black hole

## References

1. ↑ 1.0 1.1 Gianopoulos, Andrea (2022-06-07). "Hubble Determines Mass of Isolated Black Hole Roaming Our Milky Way Galaxy". http://www.nasa.gov/feature/goddard/2022/hubble-determines-mass-of-isolated-black-hole-roaming-our-milky-way-galaxy.
2. ↑ Whitwam, Ryan (2022-02-08). "Rogue Black Hole Observed for the First Time". https://www.extremetech.com/extreme/331414-rogue-black-hole-observed-for-the-first-time.
3. ↑ "Rogue black holes could be wandering at the edges of the Milky Way" (in en). 2021-08-27. https://www.livescience.com/rogue-black-holes-lurking.html.
4. ↑ Sahu, Kailash C. et al. (25 May 2022). "An Isolated Stellar-mass Black Hole Detected through Astrometric Microlensing". The Astrophysical Journal 933 (1): 83. doi:10.3847/1538-4357/ac739e. Bibcode: 2022ApJ...933...83S.
5. ↑ Browne, Ed (2022-02-08). "First ever rogue black hole spotted zooming through space at 28 miles per second" (in en). https://www.newsweek.com/first-ever-rogue-isolated-black-hole-spotted-binary-explosion-study-1676325.
6. ↑ Tomaswick, Andy (2022-02-06). "The First Rogue Black Hole has Been Discovered, and it's Only 5,000 Light-Years Away" (in en-US). https://www.universetoday.com/154420/the-first-rogue-black-hole-has-been-discovered-and-its-only-5000-light-years-away/.
7. ↑ Bennett, Dave (2000-01-13). "Lone Black Holes Discovered Adrift in the Galaxy" (in en-US). http://hubblesite.org/contents/news-releases/2000/news-2000-03.

* v
* t
* e

Black holes

Types|

* Schwarzschild
* Rotating
* Charged
* Virtual
* Kugelblitz
* Primordial
* Planck particle

Size|

* Micro
* Extremal
* Electron
* Stellar
* Microquasar
* Intermediate-mass
* Supermassive
* Active galactic nucleus
* Quasar
* Blazar

Formation|

* Stellar evolution
* Gravitational collapse
* Neutron star
* Related links
* Tolman–Oppenheimer–Volkoff limit
* White dwarf
* Related links
* Supernova
* Related links
* Hypernova
* Gamma-ray burst
* Binary black hole

Properties|

* Gravitational singularity
* Ring singularity
* Theorems
* Event horizon
* Photon sphere
* Innermost stable circular orbit
* Ergosphere
* Penrose process
* Blandford–Znajek process
* Accretion disk
* Hawking radiation
* Gravitational lens
* Bondi accretion
* M–sigma relation
* Quasi-periodic oscillation
* Thermodynamics
* Immirzi parameter
* Schwarzschild radius
* Spaghettification

Issues|

* Black hole complementarity
* Information paradox
* Cosmic censorship
* ER=EPR
* Final parsec problem
* Firewall (physics)
* Holographic principle
* No-hair theorem

Metrics|

* Schwarzschild (Derivation)
* Kerr
* Reissner–Nordström
* Kerr–Newman
* Hayward

Alternatives|

* Nonsingular black hole models
* Black star
* Dark star
* Dark-energy star
* Gravastar
* Magnetospheric eternally collapsing object
* Planck star
* Q star
* Fuzzball

Analogs|

* Optical black hole
* Sonic black hole

Lists|

* Black holes
* Most massive
* Nearest
* Quasars
* Microquasars

Related|

* Black Hole Initiative
* Black hole starship
* Compact star
* Exotic star
* Quark star
* Preon star
* Gamma-ray burst progenitors
* Gravity well
* Hypercompact stellar system
* Membrane paradigm
* Naked singularity
* Quasi-star
* Rossi X-ray Timing Explorer
* Timeline of black hole physics
* White hole
* Wormhole

* Category
* Commons

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Rogue black hole. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:Rogue_black_hole&oldid=3921102"
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template