Timeline for Mass of All the Neutrinos
Current License: CC BY-SA 4.0
12 events
when toggle format | what | by | license | comment | |
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Aug 10, 2021 at 18:05 | comment | added | ProfRob | @JerrySchirmer Correct - I have put this in. Though these neutrinos are not the products of primordial nucleosynthesis. | |
Aug 10, 2021 at 18:04 | history | edited | ProfRob | CC BY-SA 4.0 |
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Aug 10, 2021 at 16:40 | comment | added | Zo the Relativist | I guess an aside for this would be ALSO calculating neutrino production during the "CMB was still fusing hydrogen into helium" era, but even there, you're at something like, at the most, "1% of the 20% of baryonic matter that became helium and heavy elements" as your "biggest possible" estimate. | |
Jul 27, 2021 at 9:55 | history | edited | Peter Mortensen | CC BY-SA 4.0 |
Copy edited (e.g. ref. <https://en.wikipedia.org/wiki/Big_Bang>). Removed historical information (that is what the revision history is for) - the answer should be as if it was written right now.
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Jul 27, 2021 at 1:39 | history | edited | ZeroTheHero | CC BY-SA 4.0 |
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Jul 26, 2021 at 15:15 | history | edited | ProfRob | CC BY-SA 4.0 |
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Jul 26, 2021 at 14:58 | comment | added | ProfRob | @DanielDarabos yes, that is a good source and most of the numbers are still pretty accurate. I will include. | |
Jul 26, 2021 at 14:04 | comment | added | Daniel Darabos | Great answer! I didn't realize stars were a small part of baryonic matter. I eventually found "The Cosmic Energy Inventory" (2004). Looks like it's a good resource to support this answer. iopscience.iop.org/0004-637X/616/2/643/fulltext/60693.text.html | |
Jul 26, 2021 at 13:34 | comment | added | Shufflepants | While this answer provides several rough estimates of percentage compositions, maybe it could be improved by putting these rough estimations together for a "back of the envelope" final calculation of the total percentage of the rest mass of the visible universe that neutrinos make up. | |
Jul 26, 2021 at 7:14 | comment | added | ProfRob | @lurscher the question asks about neutrinos emitted by stars. But we can clarify. | |
Jul 26, 2021 at 2:25 | comment | added | lurscher | Very good answer. Something that is not covered in this answer is the possibility of primordial neutrinos | |
Jul 25, 2021 at 19:23 | history | answered | ProfRob | CC BY-SA 4.0 |