Mad Bad Rabbit wrote:
> If the charge was extreme enough that Coloumb repulsion almost
> balanced gravitational attraction, wouldn't Hawking radiation rapidly
> neutralize it again?
Well, that's kind of a more general issue. It's thought that extremal
holes are unphysical, that they can't really exist and are just weird
solutions to the Einstein field equations. In practice, any real black
hole is very, very likely to have negligible charge, due to preferential
attraction of opposite charges -- after all, electromagnetism is a much
stronger interaction than gravity.
As for Hawking radiation, remember that Hawking radiation for
solar-massed black holes is extremely feeble. However, there are
Hawking-like processes that preferentially neutralize charged black
holes as well. So you're right, but for a slightly wrong reason.
--
Erik Max Francis && max@[EMAIL PROTECTED]
&& http://www.alcyone.com/max/
San Jose, CA, USA && 37 18 N 121 57 W && AIM, Y!M erikmaxfrancis
It is morale that wins the victory.
-- Gen. George C. Marshall
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