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Results tagged with event-horizon
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user 100271
An event horizon is a type of boundary such that any information past this boundary is inaccessible to the observer it is defined for. Common examples are the Schwarzschild radius of a black hole (which is defined commonly for all observers outside this radius) and the cosmological event horizon (which is defined as a radius from an observer)
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Kerr black hole horizons and infinite redshift surfaces
In the Kerr black holes we have infinite-redshift surfaces (where a infalling body is still according to the asymptotic observer) and event horizons (the escape velocity becomes greater than the speed …
- 435
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Physical interpretation of the Reissner-Nordström metric
The Reissner-Nordström metric (in spherical coordinates and $c = 1$) differs from the Schwarzschild metric in a additive term $$\frac{GQ^2}{4\pi\epsilon_0 r^2},$$ so the metric is
$$ds^2 = \left(1 - \ …
- 435