Re: A partial black hole?

On 2008-02-26, Mike Huskey <mikehsk@[EMAIL PROTECTED]
> wrote:
> Then what is it if it isn't a neutron star, and it isn't a black
> hole?

A figment of imagination?  Certainly not anything we have observed, or
ever expect to observe.


> I still don't get it. Escape velocity above the horizon is less than
> C.  At the horizon is C, and below is greater than C. So nothing
> gets out.  Its just an immaterial boundary zone. Yes, conditions are
> extreme, but I still don't see where the laws of physics suddenly go
> berserk.

It's not a question of escape velocity, in a sense. It's a question of
acceleration required to maintain position.  Above the event horizon
it is finite, but increases without bound the closer you are.  At or
below the event horizon it is meaningless, since no such acceleration
exists.

Note that this is looking at things from a global point of view.
Locally, there is no difference just inside the event horizon from
just outside.  Even inside the horizon, you can see out - but a
rapidly contracting view that will end when you inevitably hit the
singularity a short time later.


- Tim