- #1
Mattergauge
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- TL;DR Summary
- The formation of a black hole as a collapsing massive shell. What happens to the inside metric? What happens as seen from the center?
Black holes form. An undeniable fact. Let's imagine a massive shell collapsing under its own weight (the exact composition of the mass is not important, so just imagine to be a continuous mass with zero thickness).
What happens if the process of collapse evolves? The time on the inside will run slower and slower, as compared to the outside. The metric inside will stay flat during collapse. Bow is this information conveyed to the inside, without resorting to hypothetical gravitons? Are the some kinds of flat gravitational waves involved? Outside of the shell the Schwarzschild metric will follow the collapsing mass. Inside, the metric is flat, while the time component of the metric follows that of the component outside. What happens if the metric reaches the artificial singularity at the Schwarzschild radius? On the inside, one can see the shell going on to collapse. It's confusing though. From the outside one sees the shell stop collapsing on the event horizon, but then the horizon has to be there in the first place, and the horizon is not yet there, as the hole hasn't formed yet. But still the shell seems to slow down in collapsing. And seen from the outside, there is nothing behind the horizon. The hole seems to have zero volume. As opposed to the inside. Any thoughts?
What happens if the process of collapse evolves? The time on the inside will run slower and slower, as compared to the outside. The metric inside will stay flat during collapse. Bow is this information conveyed to the inside, without resorting to hypothetical gravitons? Are the some kinds of flat gravitational waves involved? Outside of the shell the Schwarzschild metric will follow the collapsing mass. Inside, the metric is flat, while the time component of the metric follows that of the component outside. What happens if the metric reaches the artificial singularity at the Schwarzschild radius? On the inside, one can see the shell going on to collapse. It's confusing though. From the outside one sees the shell stop collapsing on the event horizon, but then the horizon has to be there in the first place, and the horizon is not yet there, as the hole hasn't formed yet. But still the shell seems to slow down in collapsing. And seen from the outside, there is nothing behind the horizon. The hole seems to have zero volume. As opposed to the inside. Any thoughts?