Low-frequency measurement of the spectrum of the cosmic background radiation

Details Low-frequency measurement of the spectrum of the cosmic background radiation Low-frequency measurement of the spectrum of the cosmic background radiation

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983phrvl..51.1099s&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 51, Sept. 19, 1983, p. 1099-1102.

Physics

42

Background Radiation, Low Frequencies, Radiation Spectra, Relic Radiation, Big Bang Cosmology, Dicke Radiometers, Liquid Helium

Scientific paper

Measurements have been made of the cosmic-background-radiation spectrum at five wavelengths (0.33, 0.9, 3, 6.3, and 12 cm) using radiometers with wavelength-scaled corrugated-horn antennas having very low sidelobes. A single large-mouth liquid-helium-cooled absolute reference load was used for all five radiometers. The results of the observations are consistent with previous measurements and represent a significant improvement in accuracy at low frequencies.

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