Re: A partial black hole?

On 2008-03-08, George W Harris <gharrus@[EMAIL PROTECTED]
> wrote:
> One could have a region of space with an overall density
> approximately that of a globular cluster, say, that would qualify as
> a black hole.  I guess the aggregate gravitational field would still
> be sufficient to cause a collapse into a singularity?

Yes, it would.  It would also require a mass
 M = c^3 / sqrt(rho 32/3 pi G^3),
which works out to about 10^18 solar m*****.  In other words the mass
of more than a million galaxies like ours within a diameter not very
much larger than one.


>  Such a collapse could still take millenia...

A good ****tion of a million years, even.


- Tim