Kugelblitz (astrophysics)

Short description: Black hole created from the concentration of energy

A kugelblitz (German: [ˈkuːɡl̩ˌblɪt͡s] (listen)) is a theoretical astrophysical object predicted by general relativity. It is a concentration of heat, light or radiation so intense that its energy forms an event horizon and becomes self-trapped. In other words, if enough radiation is aimed into a region of space, the concentration of energy can warp spacetime so much that it creates a black hole. This would be a black hole whose original mass–energy was in the form of radiant energy rather than matter,[1] however as soon as it forms, it is indistinguishable from an ordinary black hole.

John Archibald Wheeler's 1955 Physical Review paper entitled "Geons" refers to the kugelblitz phenomenon and explores the idea of creating such particles (or toy models of particles) from spacetime curvature.[2]

The kugelblitz phenomenon has been considered a possible basis for interstellar engines (drives) for future black hole starships.[3][4][non-primary source needed]

## In Fiction

* A kugelblitz is a major plot point in the third season of the American superhero television series The Umbrella Academy.

## See also

* Bekenstein bound
* Micro black hole

## References

1. ↑ Senovilla, J.M.M. (2014). "Black hole formation by incoming electromagnetic radiation". Classical and Quantum Gravity 32 (1): 017001. doi:10.1088/0264-9381/32/1/017001. Bibcode: 2015CQGra..32a7001S.
2. ↑ Wheeler, J. A. (1955). "Geons". Physical Review 97 (2): 511–536. doi:10.1103/PhysRev.97.511. Bibcode: 1955PhRv...97..511W.
3. ↑ 5 REAL Possibilities for Interstellar Travel on YouTube
4. ↑ Lee, J.S. (2013). "The effect of Hawking Radiation on Fermion re-inflation of a Schwarzschild Kugelblitz". Journal of the British Interplanetary Society 66: 364–376.

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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

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