Re: Can Black Holes move?

Is the black hole the singularity, or the event horizon (and
other mass-resultant structures)?

The black hole is the singularity. The event horizon is a state
change (boundry), not a physical structure. The mass resultant
structures are just that. Resultant (Like, uh, the smell is not the
fart, the fart is the fart, the smell the smell)

What has always intrigued me however, is whether or not all of the
apparent polar radiation escapes.


The accretion disk does indeed rotate at least
up to the event horizon,

Event horizon = 2M
Phootn sphere = 3M
Last stable orbit = 6M
... "up to the event horizon" isn't quite correct.

Okay, you're right on that. I see the point ( ha, 'the point')


and then it's anyone's guess what happens
after that as it is not yet been directly observed,
and may never be.  This is pretty basic stuff.

Except that *if* the mass that formed the black hole represented
some angular momentum, then the black hole must also represent
angular momentum... including "frame dragging".

I guess we will never know if frame dragging stops completely at the
singularity or whether or not it passes through and unravels as a
white hole at some other point in some other dimension. It is thought
that space time ceases to exist at the singularity, therefor the frame
dragged space time (which has ceased to exist) cannot spin.

Also, "must also represent" is pretty strong. "Could" is better.
Although we know it must be preserved _here_, we don't know if that
law applies outside these (our apparent) dimensions.

Good points, Dave.

GMod (the email addy is from another life... nothing to do with this
group, sorry.



David A. Smith

.

Relevant Pages

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