black holes.....event horizon/?

Question

when nearing a black hole, it is said that there is a boundary known as the 'event horizon' which is like the line of no return,.....however, i was reading on a SECOND boundary line AFTER the event horizon.....it's like this:

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it's like the first line is the event horizon, and between the single line and the double, is the space time dilation.,...after the the double lines, there is supposed to be a second horizon.....where the time dilation ENDS.....does anyone know the name of this horizon or where i can find good information on it/ ? does any one know of it? thanks! ^_^

Answer 1

This is a theory that I have heard nothing about. To my knowledge there is just the event horizon. If time dilation ends that would indicate that time is normal. At the event horizon there is no time, only light exists there and there is no time at the speed of light.

Answer 2

Wikipedia has your answers:

http://en.wikipedia.org/wiki/Black_hole

The region you mean is called the ergosphere. Time dilation does not really end. The falling observer, just like the observer inside the ergosphere have their own proper eigentime just like any other relativistic object. They also have disappeared from the timeline outside of the black hole. There is no contradiction here... that is exactly what an event horizon does: it stops EVENTS from "going through" by distorting time (which is defined only by the transport of events by means of light...see Einstein's early papers) to the point where it seems to stand still. The object creating the events on the outside can have more events on the inside... they will simply never be visible from the outside.

So it's all nice and dandy until you get close to the singularity... and there everything we know about physics stops to make sense. And since we don't have a tested theory of quantum gravity, yet, nobody can tell you what really happens on the inside. And maybe nobody ever will without any doubt... and you really don't want to go inside to find out.

Answer 3

I remember reading about this; I believe it was Stephen Hawking who postulated an end to the effect - but it essentially said, "and beyond is not in the realm of our universe" - meaning, what happened there didn't (and couldn't) be predicted from our side of the Event Horizon...

Look for Hawking's work; I *think* it was him. (And, I could be wrong...)

Answer 4

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Answer 5

i have never heard of a 2nd event horizon. i always thought there was only 1 true event horizon.