Isotropy of Cosmic Background Radiation at 4080 Megahertz

@article{Wilson1967IsotropyOC,
  title={Isotropy of Cosmic Background Radiation at 4080 Megahertz},
  author={R. W. Wilson and Arno Allan Penzias},
  journal={Science},
  year={1967},
  volume={156},
  pages={1100 - 1101}
}
We have examined an 18 hour-long record made as part of our program of measturements of the fluxes of a number of discrete radio sources. Since our radiometer employed an absolute reference, it was possible to obtain absolute background data from the reference region observed around each of the 29 sources investigated that day. From the study of a plot mode from this data, we conclude that there is no large-scale deviation from isotropy of more than 0.1�K at 4080 megahertz. 
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