(urth) "been teaching literature for over 35 years"
Gerry Quinn
gerry at bindweed.com
Mon Sep 9 06:56:02 PDT 2013
From: Jeffery Wilson
> On 9/9/2013 7:42 AM, Gerry Quinn wrote:
> > It doesn't matter (in engineering terms) whether stuff that reaches the
> > event horizon goes somewhere else or not (that's kind of the definition
> > of an event horizon). But an accretion disk outside the Schwarzschild
> > radius is just standard dynamics for any super-condensed object.
> What force acts on the matter to prevent it from following the usual swarm
> of elliptical orbits instead of the disk?
In a word, friction. The matter would be gaseous in this case and particles
could not swirl in independent orbits. But even if it were composed of
solid particles, they would soon collide, which would (1) heat the colliding
particles (2) reduce their energy, and (3) set the colliding particles on
closer trajectories than they were before.
- Gerry Quinn
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