New answers tagged event-horizon
You are quite correct that any external observer will never see a true event horizon form, however they will see an apparent horizon and an apparent horizon generates Hawking radiation. So yes you will observe Hawking radiation from an object that is on its way to becoming a black hole.
Both schools, as described by you, are wrong. There seem to be lack of agreement regarding conditions (like gravitational acceleration and time dilation) at the event horizon. Gravitational acceleration isn't a thing. The metric evolves according to the Einstein equation, test particles move along geodesics determined by their tangents, and the ...
Lets take this one at a time: When matter enters a black hole with a singularity What is matter? Ultimately matter is a bound complex of elementary particles and energy. There exist free, not in a composite structure, elementary particles with energy too, the electrons and the neutrinos and the photons. The photons in aggregate build up the ...
It might be easiest to open your idea of coordinates to include lots and lots of different coordinates. For instance if you took a regular Schwarzschild solution then you can imagine putting almost any kind of coordinate system on it. To make paint a concrete picture lets first draw the solution in a Kruskal-Szekeres coordinate system. In a ...
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