Mathematics – Logic
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...7e..38b&link_type=abstract
The Universe at z > 6, 26th meeting of the IAU, Joint Discussion 7, 17-18 August 2006, Prague, Czech Republic, JD07, #38
Mathematics
Logic
Scientific paper
This is probably the only paper given in this joint discussion in which it is not assumed that there was an initial state of the universe in which the lightest isotopes ^2D, ^3He, ^4He and ^7Li were synthesized. But as has been shown elsewhere, there is no basic theory behind this idea, and there are good observational arguments which suggest that all of the isotopes were made in stellar nucleosynthesis events (Burbidge & Hoyle 1998; Hoyle, Burbidge and Narlikar 2000; Burbidge 2005). Hydrogen burning in stars must therefore have been responsible for all the helium, and stellar flares may have produced the deuterium. These ideas fit well into a cyclic universe model with a cycle time of about 20 billion years and a situation at minimum in the cycle so that the universe will not contract to densities which would lead to the total break-up of nuclei. Thus all of the observational evidence concerned with objects at high redshifts does not have to be force-fitted into models requiring that the first generations of stars do not contain helium, as is the case for the conventional picture tied to the big bang. Attempts should be made to interpret the observations of elements in objects at high redshifts using the cyclic (quasi-steady state) cosmological model. Ways in which this can be done will be discussed. REFERENCES Burbidge, G. and Hoyle, F. The Origin of Helium and the Other Light Elements. Astrophysical Journal Letters, 509, L1-L3 (1998) and Proc. Conf. Nuclei in the Cosmos V. July 6-11, 1998 Hoyle, F., Burbidge, G., and Narlikar J.V., Book, A Different Approach to Cosmology: From a Static Universe through the Big Bang Towards Reality. (2000), Cambridge University Press, 357 pages. Burbidge, G., The Case Against Primordial Nucleosynthesis, Paper presented at IAU Symposium No. 228, May 23, 2005, From Lithium to Uranium: Elemental Tracers of Early Cosmic Evolution, Paris, France; Proceedings, Cambridge University Press, pps. 71-75, 2005
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