Re: Sir Hermann Bondi has died.



In article <eKKdnZ2dnZ2T96jknZ2dndfIu96dnZ2dRVn-z52dnZ0@xxxxxxxxxxx>,
William Hamblen <wrhamblen@xxxxxxxxxxx> wrote:

> http://news.independent.co.uk/people/obituaries/article311877.ece
>
> Sir Hermann Bondi was a well-known mathematician and astronomer.
> Bondi co-authored the steady state cosmology with Fred Hoyle
> and Tommy Gold. Hoyle died in 2001. Gold died last year.

Speaking of Tommy Gold there was a recent paper in arXiv.org
about his cosmology:

==
astro-ph/0509230

Tommy Gold Revisited: Why Does Not The Universe Rotate?

Authors: George Chapline (Lawrence Livermore National Laboratory), Pawel
O. Mazur (University of South Carolina)

Understanding gravitational collapse requires understanding how
$\sim 10^{58}$ nucleons can be destroyed in $\sim 10^{-5}$ seconds.
The recent proposal that the endpoint of gravitational collapse can
be a "dark energy star" implies that the mass-energy of the nucleons
undergoing gravitational collapse can be converted to vacuum energy
when one gets near to conditions where classical general relativity
predicts that a trapped surface would form. The negative pressure
associated with a large vacuum energy prevents an event horizon from
forming, thus resolving the long-standing puzzle as to why gravitational
collapse always leads to an explosion. An indirect consequence is that the
reverse process - creation of matter from vacuum energy - should also be
possible. Indeed this process may be responsible for the "big bang". In this
new cosmology the observable universe began as a fluctuation in an overall
steady state universe. The fluctuations in the CMB in this picture are the
result of quantum turbulence associated with vorticity. This explanation
for the CMB fluctuations is superior to inflationary scenarios because
there is a natural explanation for both the level of CMB fluctuations
and the deviation from a scale invariant spectrum at large scales.
==

I'll read the paper & let you know how it comes out ( my bet is it
wasn't Colonel Mustard in the Library. )

Dark skies,

tom

--
We have discovered a therapy ( NOT a cure )
for the common cold. Play tuba for an hour.
.