Physics a Lie Sept 17, 2011 8:07:13 GMT -5
Post by Vene on Sept 17, 2011 8:07:13 GMT -5
It's looking like between the lack of solid data from the LHC and now this about dark matter that the standard model in physics doesn't work.
Research on dwarf galaxies suggests they cannot form in the way they do if dark matter exists in the form that the most common model requires it to.
Various experiments are being carried out in deep mines in Yorkshire, on the Fermi Space Telescope, and in the Large Hadron Collider (LHC) in Switzerland to try and detect these elusive particles, or indirect evidence of their effects.
So far, none of these experiments has conclusively spotted them.
Prof Carlos Frenk at Durham University, working with the Virgo Consortium, now has data suggesting that our understanding of the formation and composition of the Universe is incomplete.
These data come from an unlikely source: dwarf galaxies, a "halo" of which surrounds our own Milky Way.
The team found that the final results of these simulations did not at all match what we observe. The models showed many more small galaxies in a wide halo around the Milky Way, whereas in reality there are fewer, larger dwarf galaxies.
One idea is that many dwarf galaxies formed as in the simulation, but there were violent supernova explosions during their formation that radically changed the structure of the dwarf galaxy halo.
An alternative cause for the discrepancies between the modelled data and what we observe is much more fundamental: that CDM does not exist, and the predictions of the standard model relating to it are false.
Prof Frenk said that after working for 35 years with the predictions of the standard model, he is "losing sleep" over the results of the simulations.