An article in the 4/1/14 issue of "New Scientist" indicates that photons from the most energetic GRB to date (GRB130427A, seen on 27/4/13) have a lag of 100s of seconds between the low and high energy rays. This is at a redshift of 0.34 or 4.68GLyr, so plenty of scope for interacting with any quantum foam that may be floating around.
The relevant article is here ... http://arxiv.org/abs/1305.2626v2 On 30 October 2013 05:12, Chris de Morsella <[email protected]> wrote: > If true – ESA experimental measurements of the polarization of ranges of > gamma rays (over a range of energies) from very distant gamma ray bursts > that have travelled across billions of light years of spacetime to reach > earth. Their experiments determined that spacetime does not have a granular > structure, which would have had a measurable effect on the polarization of > these distant gamma rays, down to a level of 10^-48 m (which is exceedingly > small)) trillions of times smaller than the Planck scale. > > Spacetime does not appear to be granular – at least down to these > incredibly small scales. These results have lead me to question any > hypothesis that seems to depend on spacetime having a discreet granular > structure. > > > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
