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QuantumR4ge t1_iy2z05q wrote

Reply to comment by breckenridgeback in ELI5: What does it mean by time slowing down at event horizon? by [deleted]

That isn’t the reason, the reason you don’t observe time dilation in your own frame is because as an in-falling observer you are not accelerating or in motion (you always see yourself at rest), so for both the in-falling and outside observer to agree on the local speed of light, they must disagree on space and time. (Although a specific combination of these is conserved)

The in falling observer actually can’t even define where the event horizon is

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[deleted] OP t1_iy31dy4 wrote

[deleted]

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QuantumR4ge t1_iy328gn wrote

An in falling observer is a non accelerating observer by definition. An in falling observer is inertial. You are viewing the world from a newtonian perspective. The proper acceleration of an inertial observer, is 0, an observer acting under only gravity is inertial, they are following a geodesic, that’s literally why they are falling. This is essentially what the equivalence principle is telling you. There is no “gravitational force “ pulling you.

In Kruskal-szekeres coordinates you can clearly see the event horizon is not defined for the in falling observer. The event horizon is not defined for observers following a geodesic

You are getting confused here, for reference my specialism is in general relativity, this is the field of research i do.

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