On Fri, 7 Jun 2002, khidr0 wrote:
> --- In thelema93-l@y..., "Eric O'Dell" <eodell@s...> wrote:
> > "natural" gold and platinum are produced almost exclusively
> > by the occasional collisions of neutron stars, supernovas
> > being insufficiently energetic to produce elements heavier
> > than iron
> Is this a new theory ? My understanding of the standard
> model of nucleosynthesis is that a normal star is capable
> of producing elements up to iron ( with the bulk of the hydro-
> gen and helium produced at the origin of the universe ). The
> elements heavier than iron were previously thought to require
> the energies of a supernova to synthesize. More recent theory
> argues that the heavier elements can also be created during a
> slow burn in the later stages of stars similar to our sun.
Do what thou wilt shall be the whole of the Law.
Hmm... I may have been recalling the rest of the details incorrectly. The
proposal that gold and platinum are the products of neutron star
collisions was put forward recently by Stephan Rosswog of the University
of Leicester. His theory was circumstantially supported by the fact that
the observable quantities of gold and platinum in the universe are
approximately what his simulations predicted given the assumed rate of
neutron star collision. There's a blurb at:
...but I can't immediately find any better references.
Love is the law, love under will.