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Article overview
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No Crisis for Big Bang Nucleosynthesis | | Peter J. Kernan
; Subir Sarkar
; | | Date: |
28 May 1996 | | Journal: | Phys.Rev. D54 (1996) 3681-3685 | | Abstract: | Contrary to a recent claim, the inferred primordial abundances of the light elements are quite consistent with the expectations from standard big bang nucleosynthesis when attention is restricted to direct observations rather than results from chemical evolution models. The number of light neutrino (or equivalent particle) species ($N_
u$) can be as high as 4.53 if the nucleon-to-photon ratio ($eta$) is at its lower limit of $1.65 imes 10^{-10}$, as constrained by the upper bound on the deuterium abundance in high redshift quasar absorption systems. Alternatively, with $N_
u = 3$, $eta$ can be as high as $8.90 imes 10^{-10}$ if the deuterium abundance is bounded from below by its interstellar value. | | Source: | arXiv, astro-ph/9603045 | | Other source: | [GID 279935] pmid10021100 | | Services: | Forum | Review | PDF | Favorites | |
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