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- W4236384003 abstract "The aim of the present report is to emphasize the role of the helium problem as the key one for different aspects of cosmological speculations. This is not surprising, because the processes which produce the helium and other elements in primordial matter take place during the first stages of the cosmological expansion of the Universe. The theory gives three critical values of the He 4 abundance in pre-stellar matter, depending on assumptions about the behaviour of the Universe near the singularity. The three critical values are: (1) practically no He 4 at all; (2) about 25% of He 4 by mass; (3) practically entirely He 4 . Although intermediate values of He 4 are in principle possible, the cosmological models permitting such values are highly improbable. It is obvious that the helium abundance is less than 100%, and that even rough estimates of whether the stellar matter consists almost entirely of hydrogen, or if it has a significant part of He 4 , are of tremendous importance. The much-more-difficult determination of traces of primeval He 3 , D, Li 6 , would be of great help in making definite cosmological conclusions." @default.
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- W4236384003 date "1971-01-01" @default.
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- W4236384003 title "Helium Production in the Different Cosmological Models" @default.
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- W4236384003 doi "https://doi.org/10.1017/s1539299600000241" @default.
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