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Cosmological Deuterium Production in Non-standard Scenarios ![]() Auteur(s): Jedamzik K.
(Article) Publié:
Planetary And Space Science, vol. 50 p.1239-1244 (2002)
Texte intégral en Openaccess : Ref Arxiv: astro-ph/0202336 DOI: 10.1016/S0032-0633(02)00089-2 Ref. & Cit.: NASA ADS 7 citations Résumé: It is widely believed that the cosmic baryon density may be obtained by inferring deuterium abundances in low-metallicity quasar absorption line systems. The implicit assumptions which enter this argument are critically assessed. In particular, the production of deuterium in non-standard Big Bang nucleosynthesis scenarios, the putative production of deuterium in astrophysical environments, and the possible destruction of deuterium via non-standard chemical evolution are discussed. Commentaires: Article based on a talk presented at "Deuterium in the Universe", Meudon, June 2001 |