Large-scale homogeneity of the Universe measured by the microwave background

  title={Large-scale homogeneity of the Universe measured by the microwave background},
  author={Nazzareno Mandolesi and Pier Ugo Calzolari and Stefano Cortiglioni and F. Delpino and Giorgio Sironi and P. Inzani and G. Deamici and J-E. Solheim and Lars Berger and Robert B. Partridge and P. L. Martenis and C. H. Sangree and Roland Harvey},
The isotropy of the cosmic-microwave background is a measure of the homogeneity of the Universe at the epoch of last scattering, conventionally taken to be the epoch of recombination of the primeval plasma at a redshift zs ∼1,000. Here we report measurements of the isotropy at a wavelength of 3 cm. At the 95% confidence level, our results restrict departures from isotropy to < 5–7×10−4 on angular scales of ∼2−10°. The angular scale of our observations is of particular cosmological significance… Expand
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