New Measurements of the Cosmic Microwave Background at λ=3.2 cm and λ=1.58 cm-Evidence in Support of a Blackbody Spectrum

Phys. Rev. Lett. 19, 1199 – Published 13 November 1967
R. A. Stokes, R. B. Partridge, and David T. Wilkinson

Abstract

In an effort to delineate the spectrum of the cosmic blackbody radiation, we have made more accurate measurements of the intensity at wavelengths of 3.2 and 1.58 cm. The results, combined with that at λ=8.56 mm reported in the preceding Letter, indicate that over this wavelength range the spectrum is that of a black body at 2.68-0.14 °K+0.09. In particular, a hot greybody spectrum does not fit the results.

DOI: http://dx.doi.org/10.1103/PhysRevLett.19.1199

  • Received 18 September 1967
  • Published in the issue dated 13 November 1967

© 1967 The American Physical Society

Authors & Affiliations

R. A. Stokes, R. B. Partridge, and David T. Wilkinson*

  • Palmer Physical Laboratory, Princeton University, Princeton, New Jersey

  • *Alfred P. Sloan Foundation Fellow.

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