On Wed, Jan 31, 2018 at 6:45 PM, <mix...@bigpond.com> wrote:
Another problem with this scenario is that time slows as the event horizon
> approached, so nothing ever actually makes it into a black hole, at least
> nothing that wasn't there already when it formed. (Assuming that time
> stands still at the event horizon).
I was of the understanding that the event horizon is merely the point of no
return for light, where it begins to curve on a trajectory that does not
escape the black hole. In this understanding, time slows down
asymptotically as objects approach the singularity, but it is still running
(albeit more slowly) at the event horizon.
To outside observers, time might seem to come to a standstill for the
electron and positron, but they would still have time to annihilate.
(Unless I'm mistaken.)