Hostname: page-component-8448b6f56d-m8qmq Total loading time: 0 Render date: 2024-04-24T09:13:17.103Z Has data issue: false hasContentIssue false
  • English
  • Français

Helium Production in the Different Cosmological Models*

Published online by Cambridge University Press:  30 March 2016

A. G. Doroshkevich ,
I. D. Novikov ,
R. A. Sunyaev  and
Ya. B. Zeldovich

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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 He4 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 He4 at all;

(2) about 25% of He4 by mass;

(3) practically entirely He4.

Although intermediate values of He4 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 He4, are of tremendous importance. The much-more-difficult determination of traces of primeval He3, D, Li6, would be of great help in making definite cosmological conclusions.

Type
III. Joint Discussions
Information
Highlights of Astronomy , Volume 2: Highlights of Astronomy. As presented at the XIVth General Assembly of the IAU, 1970 , 1971 , pp. 318 - 327
Copyright
Copyright © Reidel 1971

Footnotes

*

The references of the first works and some of modern reviews are given at the end of the report. We do not give references in the text as a rule.

References

References

Alpher, R. A., Gamow, G., and Herman, R.: 1967, Proc. Roy. Astron. Soc. 58, 2179.Google Scholar
Fermi, E., Turkevich, A.: Unpublished work.Google Scholar
Fowler, W. A.: June 1970, Preprint.Google Scholar
Greenstein, G.: 1969, Nature 223, 939.Google Scholar
Hayashi, C..: 1950, Progr. Theoret. Phys. Japan 5, 224.Google Scholar
Peebles, P.: 1966, Astrophys. J. 146, 552.Google Scholar
Shvartsman, V. F.: 1969, Zh. E. T. E, Pis. Red. (USSR) 9, 315; (Soviet. Phys. JETP Letters 9, 184).Google Scholar
Tayler, R.: 1968, Nature 217, 433.Google Scholar
Wagoner, R. V., Fowler, W. A., and Hoyle, F.: 1967, Astrophys. J. 148, 3.Google Scholar
Zeldovich, Ya. B. and Sunyaev, R. A.: 1969, Comm. Astron. Space Sci. 1, 159.Google Scholar
Zeldovich, Ya. B. and Novikov, I. D.: 1967, Relativistic Astrophysics, Moscow.Google Scholar
Doroshkevich, A. G., Zeldovich, Ya. B., and Novikov, I. D.: 1967, JETP (USSR) 53, 644; 1969, Astrophysics (USSR) 5, 539.Google Scholar
Hawking, S. W. and Tayler, J.: 1966, Nature 209, 1278.Google Scholar
Misner, C. W.: 1968, Astrophys. J. 158, 431.Google Scholar
Novikov, I. D.: 1970, Preprint, IAM 18.Google Scholar
Stewart, J. M.: 1968, Astron. Letters 2, 133; 1968, Preprint, Cambridge.Google Scholar
Thorne, W. S.: 1967, Astrophys. J. 148, 51.CrossRefGoogle Scholar
Dicke, R. H.: 1968, Astrophys. J. 152, 1.CrossRefGoogle Scholar
Burbidge, G. R.: 1969, Comm. Astron. Space. Phys. 1, 101.Google Scholar
Castellani, V., Giannone, P., and Rensini, A.: 1969, Nature 222, 151.Google Scholar
Fowler, W. A., Burbidge, E. M., Burbidge, G. R., and Hoyle, F.: 1969, Astrophys. J. 142, 423.Google Scholar
Kurt, V. G. and Sunyaev, R. A.: 1967, Kosmich. Issled. (USSR) 5, 573.Google Scholar
Novikov, I. D. and Sunyaev, R. A.: 1967, Astron. J. (USSR) 44, 320.Google Scholar
Rees, M. J., Sciama, D. W., and Stobbs, S. H.: 1968, Astrophys. Letters 2(6), 243.Google Scholar
Sargent, W.L.W. and Searle, L.: 1968, Astrophys. J. 152, 443.Google Scholar
Zeldovich, Ya. B., Novikov, I. D., and Sunyaev, R. A.: 1966, Astron. Cirk. 37.Google Scholar
Goldwire, H. C. and Goss, W. M.: 1967, Astrophys. J. 149, 15.Google Scholar
Seling, T. V. and Heiles, C.: 1969, Astrophys. J. 155, LI63.CrossRefGoogle Scholar
Sunyaev, R. A.: 1966, Soviet Astron.-A.J. 10, 989.Google Scholar