Black Holes in the Big Rip

If the expansion of the Universe is accelerating, as recent
observations indicate, and this continues, then eventually
space will be expanding at faster than light speed in a
vacuum (the so-called "Big Rip").

Presumably in that case, event horizons of black holes would
start shrinking, and I would be interested to know whether
any work has been done by black hole cosmologists on these
extreme conditions.

In particular, what would the effective temperature be at
the event horizon? (Zero one might naively think, as the
exterior would be in effect a perfect heat sink.)

Also, is it possible or likely that features inside black
holes, such as mass-inflated horizons, would be uncovered
in their futures and perhaps even locally counteract the
expansion, or does GR prohibit local variations in the
cosmological "constant" (even if it is changing overall)?

Any insights and informed and/or idle speculation welcome!

Regards

John R Ramsden

(jhnrmsdn@xxxxxxxxxxxx) <-- remove one 'o' from Yahoo

.

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