Re: Black hole question

From: Damien Broderick (
Date: Sun Feb 13 2000 - 21:09:59 MST

At 01:24 PM 13/02/00 -0800, Jeff wrote:

>If a black hole has an event horizon from within which nothing can escape,
>then how can the mass within the black hole exert a gravitational
>attraction on anything outside the event horizon?

Others have made the standard comment that gravity puts a dent in spacetime
which doesn't go away. I think the more interesting (implied?) question in
Jeff's post arises when you start thinking of gravitation in terms of
exchange gravitons. These spin-2 particles would travel at light speed, and
are complementary to the wave formulation of gravity. So presumably we need
to imagine a graviton flux ceaselessly *created* at the event horizon (due
to the immense curvature) and sweeping outward into the rest of spacetime?


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