Quote:
Originally Posted by [1ponders]
Thanks Steve.
Yes now that you bring that up I remember now reading something like that in that book, but that leads me to further wonder why a ring and not a flattened disk like a pancake or even an egg with a bulge in the center?
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Hello Paul,
The ring is not an "object" which is shaped by centrifugal forces but is a property of spacetime.
A non rotating black hole is defined as spherically symmetrical spacetime with a point singularity and a single event horizon to an observer outside the black hole.
When you rotate the black hole, the spacetime doesn't flatten out. Instead you have an inner and outer horizon and a ring singularity.
The ring singularity can be thought of as an "orbit" of a point singularity.
Regards
Steven