Talk:Cosmic neutrino background

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WikiProject Astronomy (Rated C-class, Mid-importance)
WikiProject icon Cosmic neutrino background is within the scope of WikiProject Astronomy, which collaborates on articles related to Astronomy on Wikipedia.
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clarification[edit]

I've edited the text slightly to clarify what I think is going on. I'm not an expert in this area, so please revert if I've changed the meaning.--Eujin16 (talk) 06:15, 28 November 2007 (UTC)

Update request[edit]

Could someone knowledgeable enough include the information from [1]? I'm not an expert so I'd rather not do this myself. --Eleassar my talk 13:35, 8 March 2008 (UTC)

Done. I'll remove the update tag, and I guess noone will object if I remove the stub tag too. SwordSmurf (talk) 23:48, 28 August 2008 (UTC)

To Do[edit]

  • There are some citation needed tags
  • The derivations aren't sufficiently cited, they are just stated
  • It's too technical
  • I think the organization could be improved by adding more overview before the derivations
  • We need a link for this concept of neutrinos (and photons) decoupling I linked to the neutrino decoupling article, but we don't seem to have an article photon decoupling.
  • "Once the temperature reached approximately 2.5 MeV, the neutrinos decoupled from the rest of matter." why this temperature?

CMB anisotropies and structure formation[edit]

The WMAP 9 year results were released some time ago but had an error. That has now been corrected and the revised result is Neff=3.84+/-0.40 Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results This is a significant change (essentially suggesting another species, perhaps the dark matter particle) so the article needs to be updated from the obsolete 5-year data with some words about the implications and consistency. There is a blog item about this here. George Dishman (talk) 19:07, 22 February 2013 (UTC)