Quote:
Originally Posted by korjik
An event horizon isnt created. it isnt a surface like the surface of the earth, or even like the surface of the sun. An event horizon is where time dilation goes to infinity. It is merely a notional spot, normally in the shape of a surface. There is no creation involved.
the second part of this is that anything inside the event horizon must go into the singularity. No loss of energy is needed, because no energy is being lost. the equal energy orbital path just leads into the singularity. ALL the energy inside the event horizon, in any form, just becomes part if the mass of the black hole.
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You are right about a clasic Black Hole. If the Mass/Radius = c^2/2G (a Schwarzschild Radius) the object is a clasic Black Hole with an Event Horizon.
I am interesting a moment before the star collapses and reaches this Schwarzschild Radius. Every particle is accelerated in the strong gravitational field to a relativistic velocity close to speed of light and at the Schwarzschild Radius it has reach a speed of light. All sychrotron radiation falls mostly into the heavy object and a redshifted radio emission goes away only. In classic Black Hole radio emision can't escape.
The most imprtant problem is that all particles move with a relativistic velocity and can't rest because they absorb more energy then emit. The collapse has to stop because the particles cant lose its kinetic energy and mass of the object is not under the Schwarzschild Radius.
It is like a boiled water. You can collect a water of a steam but you have to cool it. If you press the steam or gas the kinetic energy increases till the balance.
In Black Hole Like Object is a limited gravitational field causes a limited force F=GmM/r^2. it is not infinitely strong. The oscillations and rotations of the particles may create a balance before the Mass/Radius=c^2/2G.