\"Inner Horizon\" of a Black Hole??
I was watching a tape of a Nova program on Black Holes (from Oct 2006). About 27 minutes in they talk about the "Inner Horizon" of a Black Hole. What is this exactly?
BTW they were not talking about a rotating Black Hole, nor was it something at the Planck scale AFAICT.
They are talking about falling into such a large Black Hole that you can experience it for some time after passing through the event horizon. Then they say:
NARRATOR: ... Deep within, there's an inner horizon; a logjam of trapped light and energy.
PHYSICIST: At a certain moment, as we hit the inner horizon, there's this infinitely bright blinding flash. That's the stuff that's been waiting there trying to get out. It's just held there at the inner horizon.
Does anyone know what exactly this "Inner Horizon" of a Black Hole is? Informed speculation welcome.
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