Black hole bomb
A black hole bomb is the name given to a physical effect utilizing how a bosonic field impinging on a rotating black hole can be amplified through superradiant scattering. An additional condition which must be met is that the field must have a rest mass different from zero. The scattered wave will then be reflected back and forth between the mass term and the black hole becoming amplified on each reflection. The growth of the field is asserted to be exponential and unstable. The mechanism by which the black hole bomb functions is called superradiant instability.
History
The idea that angular momentum and energy may be transferred from a rotating black hole to a particle being scattered by it was proposed by Roger Penrose in 1971. The first discussion of a runaway effect, the black hole bomb, was explored by W. H. Press and S. A. Teukolsky in 1972.[1] If such an effect were to spontaneously occur, it may point to new physics beyond the Standard Model, and showing that black holes have "hair", as pointed out by a paper from 2017, by William E. East and Frans Pretorius.[2]
See also
References
- ^ Sam Dolan (24 July 2017). "Viewpoint: Spinning Black Holes May Grow Hair". Physical Review Letters. American Physical Society.
- ^ Hamish Johnston (27 July 2017). "Spinning black holes could grow long hair". Physics World.
Further reading
- Press, William H.; Teukolsky, Saul A. (1972). "Floating Orbits, Superradiant Scattering and the Black-hole Bomb". Nature. 238 (5361): 211–212. Bibcode:1972Natur.238..211P. doi:10.1038/238211a0.
- "Black-Hole Bombs and Photon-Mass Bounds". Physical Review Letters. 27 September 2012. arXiv:1209.0465. Bibcode:2012PhRvL.109m1102P. doi:10.1103/PhysRevLett.109.131102.
{{cite journal}}: Cite uses deprecated parameter|authors=(help) - "Superradiant Instability and Backreaction of Massive Vector Fields around Kerr Black Holes". Physical Review Letters. American Physical Society. 24 July 2017. arXiv:1704.04791. Bibcode:2017PhRvL.119d1101E. doi:10.1103/PhysRevLett.119.041101.
{{cite journal}}: Cite uses deprecated parameter|authors=(help) - Kurzgesagt (22 April 2018). "The Black Hole Bomb and Black Hole Civilizations on YouTube". Kurzgesagt – In a Nutshell.
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External links
- Helvi Witek, 'Black Hole Bomb' Simulation on YouTube, Ole Miss News, University of Mississippi (12 October 2012)
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