On 1/24/2014 5:01 AM, Edgar L. Owen wrote:
Liz,

Once the warp is formed it can easily separate from the matter that caused it. At that point it is effectively just another mass of matter. That is why it's called dark matter. And of course masses separate from each other all the time.

Don't think of it like it's continued existence depends on the original galactic mass. Once it's created it exists as a separate dark mass that can go anywhere it likes under gravitational forces just like VISIBLE matter can...

A warp in space that is bound together by its own gravitation is what is known as a black hole.

Note that Hawking as just posted a paper casting doubt on their existence:

http://arxiv.org/abs/1401.5761

Information Preservation and Weather Forecasting for Black Holes
S. W. Hawking
(Submitted on 22 Jan 2014)

It has been suggested [1] that the resolution of the information paradox for evaporating black holes is that the holes are surrounded by firewalls, bolts of outgoing radiation that would destroy any infalling observer. Such firewalls would break the CPT invariance of quantum gravity and seem to be ruled out on other grounds. A different resolution of the paradox is proposed, namely that gravitational collapse produces apparent horizons but no event horizons behind which information is lost. This proposal is supported by ADS-CFT and is the only resolution of the paradox compatible with CPT. The collapse to form a black hole will in general be chaotic and the dual CFT on the boundary of ADS will be turbulent. Thus, like weather forecasting on Earth, information will effectively be lost, although there would be no loss of unitarity.

Brent

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