Dear George Disman:

"George Dishman" wrote in message
...

"N:dlzc D:aol T:com (dlzc)" N: dlzc1 D:cox
wrote in message news:LouPe.125018$E95.97822@fed1read01...
Dear Martin Brown:

"Martin Brown" wrote in
message ...
N:dlzc D:aol T:com (dlzc) wrote:

Dear Martin Brown:

"Martin Brown" wrote in
message ...
...
And he can still see the fixed stars outside the BH.

That is what Andrew's simulations show, yes. Yet the photon
sphere will be continually ingested/drained by an expanding
hole, and the Einstein rings will sucessively give up some
of their contents. At least.

Sorry but I cannot make any sense of the last two sentences.
You won't be able to see anything out of an active feeding BH
since it will be surrounded by opaque dense relativistic
plasma.

WE
ARE
TALKING
ABOUT
A
FALLING
PERSON
INSIDE.
How is the world is he supposed to see specular images through
an opaque dense relativistic plasma (shades of the CMBRM,
Batman!), Martin? Can we see through the CMBRM?

David, before shouting at people, remember you were talking
about a black hole, not the big bang at this point:

"And he can still see the fixed stars outside the BH."

That is not what *I* said George. It was to what I was
responding. I will apologize to Martin under separate cover.

There is no "opaque dense relativistic plasma" around
many black holes. At the event horizon, there is nothing
but vacuum so the person inside can look back and see the
external stars. Obviously this would be different for a
BH that has a disk fed from a companion but again you
can still see out to that disk and the bottom of any jets.

I find it fascinating that such a plasma might also fulfill the
needs of a CMBRM. But I don't find it compelling, only
"convenient".

I think the intergrated light history, on its own, will be
sufficient. I wonder if they got any sort of spectral
information on the "dual to a black hole" experiments...

David A. Smith