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From: gwyn@BRL.ARPA
Newsgroups: net.physics
Subject: Re:  A Queation Regarding Black Holes
Message-ID: <482@sri-arpa.ARPA>
Date: Thu, 8-Aug-85 18:04:56 EDT
Article-I.D.: sri-arpa.482
Posted: Thu Aug  8 18:04:56 1985
Date-Received: Mon, 12-Aug-85 22:30:59 EDT
Lines: 16

From:  Doug Gwyn (VLD/VMB) 

Two of the three modes of "gravity waves" are purely conventional
while the third has been shown to propagate at the speed of light.
However, this is a "weak field" (nearly Lorentz metric) approximation
and one thing for sure about so-called "black holes" is that they
are not weak fields!  One cannot legitimately treat them as embedded
in a flat background space-time when discussing questions such as
this in regions very "near" the black hole.  My feeling is that one
could "define" terms such that gravitational effects propagated
locally at the speed of light, even "inside" a black hole.  I don't
know what good this would do, though.

P.S.  I'll believe in black holes the day that I see a solution to
the real field equations that looks like one, not just to the old
1916 equations.