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It seems that matter usually doesn't fall through the event horizon: due to time dilution it will take infinite time for matter to reach the horizon from our po
by guard-of-terra 11y ago
It seems that matter usually doesn't fall through the event horizon: due to time dilution it will take infinite time for matter to reach the horizon from our point of view.
That's what I've got on Physics stack exchange. There's those collapsars that look exactly like black holes but are made of matter around the event horizon, infinitely falling in.
Is this right, wrong, or irrelevant?
- gthm 11y ago> It seems that matter usually doesn't fall through the event horizon: due to time dilution it will take infinite time for matter to reach the horizon from our point of view. From our point of view, not the matter's. The matter falls through just fine.
- guard-of-terra 11y agoIt can only do it once it witnesses the end of times. We can't see any information destruction since it's always sometime in the future.
- DonGateley 11y agoThat is correct. From the point of view of the infalling object, however, nothing changes as he crosses it except his position in space. I say who gives a shit about the point of view of the infalling object. :-)
- mc808 11y agoIt seems to me, intuitively, that the infalling object should experience inverse time dilation and extreme blue-shifting of the outside universe as it approaches the event horizon. Due to length contraction, that energy would be increasingly perpendicular to the object's trajectory, approaching a point where it is bombarded with enough energy to either knock it off its trajectory or "smear" its particles into orbit around the massive object (basically another sort of firewall). Presumably the mathematical descriptions tell a different story because I never see it described like this.