Cosmos 12: Nucleosynthesis: The Origin of the Light Elements

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    2. For the time being, mainly what we have is just Liddle, Ch. 12: Nucleosynthesis: The Origin of the Light Elements

    Plus some supplements/complements.

    1. Wikipedia: Big Bang nucleosynthesis, Wikipedia: Nucleosynthesis: Big Bang nucleosynthesis: it larger table of reactions: p+p is not important.
    2. Liddle, Ch. 12: Nucleosynthesis: The Origin of the Light Elements
    3. Wikipedia: Graphical timeline of the Big Bang
    4. Wikipedia: Graphical timeline from Big Bang to Heat Death but note that the left-hand vertical scale is tricky, for greater than about > 0, it is x=100*log(log(t_year)) and so t_year=10**(10**(x/100))). Redundant to the timeline above up to the stelliferous era
    5. Wikipedia: Chronology of the universe: A description rather than a timeline.
    6. Big Bang nucleosynthesis images google.
      See also.
      1. Early universe cosmic temperature figure.
      2. big_bang_nucleosynthesis.html: For the nuclear reaction network and the time evolution Big Bang nucleosynthesis.
      3. See also Wikipedia: Nucleosynthesis: Big Bang nucleosynthesis: It has larger table of reactions: p+p → D+e**(+)+ν_e is NOT important because is so much weaker than the P+D → + He-3 + γ (see Wikipedia: Proton-proton chain reaction: The proton-proton chain reaction
      4. Hyperphysics: Big Bang Nucleosynthesis for a more complete version of the nuclear reaction network.
      5. Thespectrum: Big Bang Nucleosynthesis for the importance of the neutrons because of the lack of Coulomb barrier.
      6. Atropos: Primordial Nucleosynthesis versus Stellar Nucleosynthesis: but it completely omits the enormous distinction that Big Bang nucleosynthesis has free neutrons and stellar nucleosynthesis does NOT.
      7. BBN yield fits to observation
      8. Burro: Time Evolution of Big Bang nucleosynthesis.
      9. Big Bang nucleosynthesis images google.
    7. The cosmological lithium problem. Apparently, no good solution. A major problem for Big Bang nucleosynthesis. See the Li I grotrian diagram with with a strong allowed line from the ground state.
    8. baryon-to-photon ratio η=6.16*10**(-10) (Planck-2018) (see also Wikipedia: Big Bang nucleosynthesis: Baryon-to-photon ratio η; Wikipedia: cosmological lithium problem; An Etymological Dictionary of Astronomy: baryon-to-photon ratio η): 
      
      print*
      con=2.75e-8_np  ! https://physics.stackexchange.com/questions/274780/baryon-photon-ratio
      data=0.0224_np  ! https://physics.stackexchange.com/questions/274780/baryon-photon-ratio
      eta_planck=con*data
      print*,'eta_planck'
      print*,eta_planck
! 6.15999999999999999980E-0010
    9. * | The eras of radiation, matter, and dark energy: new information from the Planck Collaboration: Kevin Cahill, arXiv, 2016, June 22, 13 pages: Research: On cosmic scale factor and the cosmic energy eras based on the Planck 2015: Planck 2015 results. XIII. Cosmological parameters.
      ---Keywords: cold dark matter (CDM), concordance model, concordance model distance measures, cosmic energy eras (radiation era, matter era, dark-energy era) cosmic scale factor, cosmological redshift, cosmology, dark energy, dark matter, disk galaxies, expansion of the universe, IOP cosmological parameters summary: bit dated, Universe in Problems: lots of solutions, etc.
    10. Keywords: Baryonic matter (protons, neutrons, electrons), Big Bang, Big Bang nucleosynthesis, big bang singularity, cosmic energy eras (radiation era, matter era, dark-energy era) deuteron (D or H-2), early universe, helium (He) (He-3, He-4), IOP cosmological parameters summary: bit dated, Universe in Problems: lots of solutions.
    11. See big_bang_nucleosynthesis.html below (local link / general link: big_bang_nucleosynthesis.html):