Talk:Solar neutrino

message: Nice Article on the subject.  I think the end could do with some re writting to clarrify it.  Will come back when I have time. Hope my changes meet with approval. CaptinJohn 14:45, 11 September 2007 (UTC)
thread_title: Clarification request

message: When you type in 'solar neutrino" on the search page you get the pop-ups:
  Solar neutrino
  neutrinos produced by processes above the solar photosphere
and 
   Solar neutrino problem
   major discrepancy between measurements of the 
   numbers of neutrinos flowing through the Earth and 
   theoretical models of the solar interior
Both of theses descriptions are inaccurate, particularly the first one, and are contradicted by the articles themselves. The neutrinos are produced in the Sun's core, not above the photosphere.  And the 2nd description does not indicate that the discrepancy has been resolved by the observation of neutrino oscillations.
(These incorrect descriptions sound like something a believer in the Electric Universe might have written, since it is EU dogma that there is no fusion going on in the Sun's core.)
But since these errors are not in the articles themselves I don't know how to correct them.  Maybe somebody else does.
Archimedes100 (talk) 19:52, 24 July 2017 (UTC)
thread_title: Clarification request

message: The mystery of the missing solar neutrinos took over 30 years to solve.  Using a neutrino detector that was a large tank of dry-cleaning fluid deep in the Homestake mine in South Dakota, Nobel Laureate Ray Davis' team determined that the flux of neutrinos from the Sun was only about 1/3 the number that were predicted according to the Standard Solar Model.  That was because only one of three (or four, if you count sterile ones) possible types of neutrinos produced in that reaction can have an electroweak interaction with chlorine atoms in tetrachloroethane molecules, converting them into inert argon gas, the dissociated atoms of which are detected and counted after several weeks.
References:
http://www.sns.ias.edu/~jnb/Papers/Popular/Scientificamerican69/scientificamerican69.html
https://www.sciencedirect.com/science/article/pii/S2212686414000211
Corroboration of the predictions of the Standard Solar Model and recent accurate measurements of sound speeds over the entire volume of the sun yield rms values within 1%, unless you take your information about the age of the Sun from a creationist website suggesting Intelligent Design values  for the entire universe to be a number of years that is much less.
That age is on the order of 4.5 x 10^9 solar years, which I did not see referenced in this article, and which is the whole point of doing such experiments.
Danshawen (talk)danshawen  —Preceding undated comment added 12:40, 29 June 2019 (UTC)
thread_title:  Ray Davis and the Homestake Neutrino Detector 

message: I question the percentages given for the different sources of neutrinos (86% ad 14%). They do more or less correspond to the values one can calculate from the accompanying figure, but I think those figures are also wrong, and the image file gives no reference. I think it's about 93% neutrinos from the pp reaction and 7% from the others. Does anyone else have something to say on this, with a reference? Eric Kvaalen (talk) 17:02, 24 June 2020 (UTC)
replies: text: The latest and greatest source for solar neutrino fluxes (that I'm aware of) is this paper https://iopscience.iop.org/article/10.3847/1538-4357/835/2/202. Table 2 of that paper lists two different solar models (GS and AGS), those fluxes give approximately 91.5% or 92.3% (respectively) for the pp neutrino fraction and 7.5% or 6.9% (respectively) for the Be7 fraction. That paper also states that the GS model is more consistent with measurements, so for this page it's probably okay to just provide the GS calculation fluxes. Although it would certainly be a good improvement for this page to discuss the two different solar models and their affect on the neutrino fluxes. 73.18.156.222 (talk) 17:20, 12 December 2020 (UTC)
thread_title: Percentages

message: The introduction states: "A solar neutrino is a neutrino originating from nuclear fusion in the Sun's core, and is the most common type of neutrino passing through any source observed on Earth at any particular moment." This is pretty confusing. Why are neutrinos passing through "sources", are the sources where neutrinos pass through observed, or are the neutrinos observed? Are the mentioned sources on earth, or just observed from earth?? Also, the sentence is probably wrong, because in the vicinity (few km) of nuclear reactors, the neutrino flux from the reactor is probably stronger than the flux of solar neutrinos at that position. So please let us clarify this. --Geek3 (talk) 17:38, 2 May 2024 (UTC)
thread_title:  Clarify introduction