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Old 09-08-2011, 04:35 PM
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renormalised (Carl)
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Quote:
Originally Posted by CraigS View Post
Its interesting to note that it has been confirmed that high energy photons from a GRB (Gamma Ray Burst) have been observed to arrive ahead of lower energy photons.

This is predicted in Smolin's theory, as momentum space is curved (ie: 'non-metric').

Mind you, they go on to explain that this can also be explained simply by the way they're emitted from the source .. ie: the explosions aren't instantaneous .. they last for several seconds, which would account for the observed delays.

More GRBs are needed in order to pin this one down ..

.. interesting …

Cheers
The other explanation also has to do with the graininess of spacetime and how the gamma rays emitted from the GRB interact with spacetime in their journey to the detectors.

In any case, the emission mechanism could easily explain why, as they have mentioned. The more powerful gamma rays are emitted during the peak of the explosion, with the weaker gamma rays being emitted during the tailing off of the explosion.
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