- #1

naima

Gold Member

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So apparent Horizon is introduced. It uses http://www.fysik.su.se/~ingemar/relteori/Emmaslic.pdf

They are closed spacelike surfaces. when they emit light there is no diverging wave front.

A theorem says that Apparent Horizons lie behind or on the Event Horizon.

My question is about rhe non eternally accelerated observer. Has she an apparent horizons?