= Isolated horizon
{wiki=Isolated_horizon}
In the context of general relativity and black hole physics, an **isolated horizon** is a concept used to describe the boundaries of black holes in a way that allows for a clearer understanding of their thermodynamic properties and their interactions with the surrounding spacetime. An isolated horizon can be defined as a null hypersurface that is invariant under the action of the gravitational field but is not influenced by any external matter fields or energy.
Back to article page
