The discussion centers on the complexities of black hole horizons and Hawking radiation, particularly contrasting the perspectives of distant and falling observers. Participants assert that the formation of an event horizon is not part of a distant observer's past light cone, while it can be in their future light cone. The conversation highlights the distinction between actual event horizons and apparent horizons in the context of evaporating black holes, with references to the Oppenheimer-Snyder and outgoing Vaidya metrics. The consensus indicates that Hawking radiation originates from regions just above the horizon, challenging traditional notions of black hole evaporation.
PREREQUISITESPhysicists, astrophysicists, and students of theoretical physics interested in black hole dynamics, horizon formation, and the implications of Hawking radiation on our understanding of the universe.
Marilyn67 said:Thank you very much