hasEventHorizon
P4449
predicate
Indicates that an object possesses an event horizon, a boundary beyond which events cannot affect an outside observer.
Aliases (3)
- hasHorizonStructure ×3
- eventHorizonRadiusSymbol ×1
- hasOuterHorizonRadius ×1
Sample triples (10)
| Subject | Object |
|---|---|
| Bardeen black hole model | can have an extremal horizon ("hasHorizonStructure") → |
| Bardeen black hole model | can have no horizon depending on parameters ("hasHorizonStructure") → |
| Bardeen black hole model | can have two horizons ("hasHorizonStructure") → |
| Eddington–Finkelstein coordinates | r = 2M ("eventHorizonRadiusSymbol") → |
| Kerr–Newman black hole | inner Cauchy horizon → |
| Kerr–Newman black hole | outer event horizon → |
| Reissner–Nordström metric | at r = r_+ for |Q| \le M → |
| Reissner–Nordström metric | r_+ = M + \sqrt{M^2 - Q^2} ("hasOuterHorizonRadius") → |
| Schwarzschild black hole | Schwarzschild radius → |
| de Sitter spacetime | cosmological horizon → |