A dynamical horizon is a concept that arises in the context of general relativity and black hole physics. It refers to a type of boundary in spacetime that can change or evolve over time, differentiating it from a static or fixed horizon. In particular, it is often associated with the event horizons of black holes, especially in situations where the mass of the black hole can change, such as during the process of accretion or after mergers with other black holes.
New to topics? Read the docs here!