Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: Bogie_smiles on 09/10/2017 14:07:58
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Is the dark matter problem now solved by finding the missing baryons? Or not?
https://www.newscientist.com/article/2149742-half-the-universes-missing-matter-has-just-been-finally-found/ (https://www.newscientist.com/article/2149742-half-the-universes-missing-matter-has-just-been-finally-found/)
Filaments of baryons between galaxies
https://www.newscientist.com/article/2139899-lhc-pops-out-a-new-particle-that-could-test-the-strong-force/ (https://www.newscientist.com/article/2139899-lhc-pops-out-a-new-particle-that-could-test-the-strong-force/)
Finding the extra baryons
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I don't think that is what the first link says. The filaments are not galactic halos. The second link is about filling out the quark model so doesn't apply unless the particle is long lived. There is no information in the article about its lifetime.
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Is the dark matter problem solved?
No, the bulk of invisible "Dark Matter" in the universe is still invisible and unknown.
What the astronomers suggest they have discovered is some of the visible "Normal" or "Baryonic" matter - that was just too thinly spread and at the wrong temperature to be detectable via previous methods.
The other discovery from LHC is just another form of Baryon, so it is still "Normal" matter that responds to the strong nuclear force.
Current theories of Dark Matter suggest that it is a particle which does not respond to the Strong nuclear force or the Electromagnetic force. If it responds to the Weak nuclear force, it must interact much less frequently than the ghostly neutrinos (which we can detect on Earth).
See: https://en.wikipedia.org/wiki/Dark_matter
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The thing to keep in mind here is that the matter they found was matter they expected to be there. In other words, the universe was expected to contain a certain amount of baryonic matter, but they hadn't been able to detect it. Finding it just confirmed what they already assumed. Determinations of how much dark matter the universe has already assumed the existence of the this "hidden" baryonic matter, so its discovery has no bearing on the expected amount of dark matter.
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I feel like there is no way for us to understand the meaning and power behind Dark Matter neither now nor in next 30 years. This topic is very hard to see, understand and describe. Not to mention math of course which can be hell and will break not one scientist! But eventually we will get to know this little secret of our universe.
Regards,
Paul - expert writer at <<MOD: Spam link removed>>
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According to the sky at night programme, its at a tipping point of being solved or disproven in its current wimpy form
https://www.bbc.co.uk/iplayer/episode/b09mj749/the-sky-at-night-the-invisible-universe
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BBC iPlayer only works in the UK. Sorry, it’s due to rights issues.
I couldn't play the video but could read the short article. Dark natter and dark energy are interesting topics. Thanks for the link.
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BBC iPlayer only works in the UK. Sorry, it’s due to rights issues.
I couldn't play the video but could read the short article. Dark natter and dark energy are interesting topics. Thanks for the link.
Try bbc world and search "sky at night". It iss not an expensive production, and is educational and informative so there is a strong possibility that it is avaliable. We have rights issues with the bbc here, i cannot watch bbc world service news channel, yet im in the british part of bbc !
That is unless your in china or iran.