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From: Mikko <mikko.levanto@iki.fi>
Newsgroups: sci.physics.relativity
Subject: Re: How can gravity itself escape a black hole?
Date: Sun, 3 Nov 2024 16:01:45 +0200
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On 2024-11-02 16:11:21 +0000, Richard Hachel said:

> Le 02/11/2024 à 11:54, Mikko a écrit :
>> Gravity does not escape a black hole. There was gravity already
>> when there was no black hole. The gravity of the matter does not
>> disappear when that matter becomes a black hole.
> 
> Nothing can come out of a black hole.
> Not even a photon.
> But a graviton, yes.

As graviton is neither an observed nor a theoretical particle it
is far from clear what it can do. Anyway, virtual particles used
in quantum field theories can travel faster than light and
backwards in time, which is sufficient for escaping a black hole.

-- 
Mikko