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Title:
Sensitive measurement of fluctuations in the cosmic microwave background
Authors:
Davies, R. D.; Lasenby, A. N.; Watson, R. A.; Daintree, E. J.; Hopkins, J.; Beckman, J.; Sanchez Almeida, J.; Rebolo, R.
Affiliation:
AA(Manchester, Victoria University, Jodrell Bank, England), AB(Mullard Radio Astronomy Observatory, Cambridge, England), AC(Manchester, Victoria University, Jodrell Bank, England), AD(Manchester, Victoria University, Jodrell Bank, England), AE(Manchester, Victoria University, Jodrell Bank, England)
Publication:
Nature (ISSN 0028-0836), vol. 326, April 2, 1987, p. 462-465. (Nature Homepage)
Publication Date:
04/1987
Category:
Space Radiation
Origin:
STI
NASA/STI Keywords:
ANGULAR DISTRIBUTION, RELIC RADIATION, ANISOTROPY, GALACTIC EVOLUTION, MASS DISTRIBUTION, TEMPERATURE DISTRIBUTION
DOI:
10.1038/326462a0
Bibliographic Code:
1987Natur.326..462D

Abstract

Extensive high sensitivity observations of the cosmic microwave background have been made on an angular scale of 8° covering a substantial fraction of the northern sky. An observed anisotropy in the sky emission at a level of ΔT/T = 3.7×10-5 has been detected (T is temperature). This level should strictly be interpreted as an upper limit to the cosmic microwave background fluctuations. It is possibly the direct imprint of density perturbations in the early universe.
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