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$\begingroup$ But, when the Hawking radiation is on the inside, everything else coming form inside, how can a particle, even if it is virtual, form on the outside? Also, how exactly are they 'virtual'? $\endgroup$
– user748
Commented Jan 7, 2014 at 13:47
1

$\begingroup$ Virtual particles form spontaneously and usually live for a very short time, less than about 1e-22 seconds, details see en.wikipedia.org/wiki/Virtual_particle. Only half of the radiation is in the inside, the outside (anti-)particle can become Hawking radiation. A particle looking virtual from an infalling coordiante system can look real from outside, because of extreme time dilation near the event horizon. $\endgroup$
– Gerald
Commented Jan 7, 2014 at 17:07

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