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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.
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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.
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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.
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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.
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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.
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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. |
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Post by Shano on Sept 17, 2011 14:39:56 GMT -5
Um...
Galaxy formation is so completely and totally still in its infancy that ANY predictions based on it are to be taken with large chunks of salt. And not only should DM but also DE be taken into account and THAT we don't even know if it is a particle or geometry phenomenon.
In addition the lack of detection of the Higgs is so not suggesting any problem yet.
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Post by MaybeNever on Sept 17, 2011 20:59:52 GMT -5
Plus the Bible.
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Post by Amaranth on Sept 18, 2011 8:25:32 GMT -5
Because GAWD
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Post by Old Viking on Sept 21, 2011 14:41:10 GMT -5
Geez, if dark matter could be detected it wouldn't be dark, now, would it?
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Post by DeadpanDoubter on Sept 21, 2011 15:15:37 GMT -5
I thought that was invisible matter.
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Post by sylvana on Sept 22, 2011 2:06:19 GMT -5
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.
Any scientist that thought our understanding of the universe was anything but horribly incomplete should have their tenure stopped. Given that all we have to work with is what we can see from our small little spot in the universe, its amazing we have any kind of understanding at all. The joys of science is that if someone comes up with a better explanation, it can form the basis of future work to discover more. |
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Post by CtraK on Sept 22, 2011 2:25:35 GMT -5
Any scientist that thought our understanding of the universe was anything but horribly incomplete should have their tenure stopped. Most likely he didn't actually say that. Science reporting is often features the worst aspects of journalism on either side of the Atlantic - at least with celebrity gossip they assume you know who the people are, more or less. Science reporting simply assumes that you're an utter moron in every respect, because far, far too many times, the journalist in question is. |
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