carmelinux ha scritto:
> On Thu, 20 Aug 2009 10:41:10 +0200, Aleph wrote:
> >...
> > ("... that the SGWB is even smaller than LIGO can currently detect"),
> > ciò che ha consentito di cassare alcuni modelli cosmologici esotici
> quali modelli ? grazie!
"Our result constrains the energy density of the stochastic
gravitational-wave background normalized by the critical energy density of
the Universe, in the frequency band around 100 Hz, to be <6.9 10-6 at 95%
confidence. The data rule out models of early Universe evolution with
relatively large equation-of-state parameter, as well as cosmic
(super)string models with relatively small string tension that are
favoured in some string theory models. This search for the stochastic
background improves on the indirect limits from Big Bang nucleosynthesis
and cosmic microwave background at 100 Hz".
http://www.nature.com/nature/journal/v460/n7258/full/nature08278.html#B5
Saluti,
Aleph
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Received on Fri Aug 21 2009 - 13:01:00 CEST