Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.178..625b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 178, Mar. 1977, p. 625-649. Research supported by the Science Research
Astronomy and Astrophysics
Astronomy
42
Abundance, Cosmology, Galactic Evolution, Light Elements, Nuclear Fusion, Turbulence Effects, Baryons, Deuterium, Helium, Recombination Reactions, Turbulent Flow
Scientific paper
Primordial nucleosynthesis is investigated in the vortex cosmologies conceived by Ozernoi et al. (1968). The early evolution of nonrelativistic and relativistic velocity fields within homogeneous and inhomogeneous anisotropic eddies is investigated in detail together with the occurrence of thermal equilibrium. The various conditions under which element synthesis can occur are delineated, and the resulting abundances are related to the maximum turbulent mass scale at recombination associated with protogalaxies. All dynamical effects depend essentially only upon the baryon density parameter and the adiabatic fluid velocity at the time of equilibrium. The helium and deuterium abundances synthesized on different mass scales are determined, and it is found that helium and deuterium abundances within the range of observation can only be obtained on galactic scales if the baryon density parameter is less than 0.014. The effects of such small-scale processes as clumping dissipation and shocks are also discussed. In conjunction with considerations of the microwave isotropy, the results imply that if light elements are to be synthesized primordially, the turbulent cosmologies conflict with observation.
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