Hostname: page-component-745bb68f8f-kw2vx Total loading time: 0 Render date: 2025-02-06T22:07:32.887Z Has data issue: false hasContentIssue false
  • English
  • Français

The Quest for Fine-Scale Anisotropy in the Relict Radiation

Published online by Cambridge University Press:  07 February 2017

Paul E. Boynton
Paul E. Boynton*
Affiliation:
Department of Astronomy, Harvard University, and Harvard College Observatory Cambridge, Massachusetts

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.

Up to Symposium Session IV, the observed properties of the large scale structure of the Universe have been discussed in terms of studies based on the spatial distribution of galaxies with redshift less than one; studies which indicate clustering on characteristic scales up to ~20 Mpc or equivalently ~1015M⊙. Such a survey is rather local in scope compared to what in principle could be inferred from the measurement of temperature fluctuations in the relict radiation surviving from Z ≃ 1000 as the fossil imprint of “primordial” density fluctuations on scales up to the horizon at the epoch of decoupling, M ≃ 1019M⊙. However, the investigation of structure over a still-larger sample volume and scales greater than 1015M⊙ is not a possibility which I wish to stress in this paper. Rather, given our present state of ignorance about the formation of structure, perhaps a more fruitful first approach would be to examine small angular scales in the relict radiation for insight into the evolution of density perturbations by a careful comparison between the observationally inferred “initial” spectrum of mass inhomogeneities present back at the epoch of decoupling, and the mass spectrum of clustering which characterizes the present Universe.

Type
IV. Observational Evidence for Cosmological Evolution
Information
Symposium - International Astronomical Union , Volume 79: The Large Scale Structure of the Universe , 1978 , pp. 317 - 326
Copyright
Copyright © Reidel 1978 

References

1. Ade, P.A.R., Rowan-Robinson, M., and Clegg, P.E.; 1976, Astr. Ap. 53, 403.Google Scholar
2. Boynton, P.E. and Partridge, R.B.; 1973, Astrophys. J. 181, 243.Google Scholar
3. Boynton, P.E.; 1974, in Confrontation of Cosmological Theories with Observational Data, Longair, M.S. (ed.), IAU Symposium 63.Google Scholar
4. Caderni, N., De Cosmo, V., Fabbri, R., Melchiorri, B., Melchiorri, F., and Natale, V.; 1977, Phys. Rev. D. (to be published).Google Scholar
5. Carpenter, R.L., Gulkis, S. and Sato, T.; 1973, Astrophys. J. Letters 182, L61.Google Scholar
6. Conklin, E.K. and Bracewell, R.N.; 1967, Nature 216, 777.CrossRefGoogle Scholar
7. Corsi, R., Dall'Oglio, G., Fonti, S., Guidi, I., Melchiorri, B., Melchiorri, F., Natale, V., Mencaraglia, P., Lombardini, P., Trivero, P., Sivertsen, S.; 1974, IEEE Trans. on Microwave Theory and Techniques, MTT-22, 1036.Google Scholar
8. Field, G.B.; 1967, in Stars and Stellar Systems, ed, Sandage, A. R. and Sandage, M. (University of Chicago Press), Vol. IX.Google Scholar
9. Hildebrand, R.H., Harper, D.A., Whitcomb, S.E., Winston, R., Stiening, R.F. and Moseley, S.H.; 1977, Ap. J. 216, 698.Google Scholar
10. Lifschitz, E.M.; 1946, J. Phys. USSR 10, 116.Google Scholar
11. Longair, M.S. and Sunyaev, R.A.; 1969, Nature 223, 719.Google Scholar
12. Parijskij, Yu. N.; 1973, Astrophys. J. Letter 180, L47.CrossRefGoogle Scholar
13. Parijskij, Yu. N.; 1977, to be published.Google Scholar
14. Partridge, R.B.; 1977, in preparation.Google Scholar
15. Peebles, P.J.E., and Yu, J.T.; 1970, Ap. J. 162, 815.Google Scholar
16. Penzias, A.A., Schraml, J., and Wilson, R.W.; 1969, Astrophys. J. Letters 157, L49.Google Scholar
17. Pigg, J.C.; 1977, in preparation.Google Scholar
18. Rees, M.J., Sciama, D.W.; 1969, Comments Astrophys. Space Phys. 1, 140.Google Scholar
19. Silk, J.; 1968, Ap.J. 151, 459.Google Scholar
20. Silk, J.; 1974, Ap. J. 194, 215.Google Scholar
21. Stankevich, K.S.; 1974, Sov. Astron., 18, 126.Google Scholar
22. Sunyaev, R.A., Zel'dovich, Ya. B.; 1970, Astrophys. Space Sci 7, 1.Google Scholar
23. Weinberg, S.; 1972, Gravitation and Cosmology, J. Wiley, N.Y. Google Scholar