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

Abstract

Measurements have been made of the cosmic-background-radiation spectrum at five wavelengths (0.33, 0.9, 3, 6.3, and 12 cm) with use of radiometers with wavelength-scaled corrugated-horn antennas having very low sidelobes. A single large-mouth (0.7-m-diam) 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.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Space Sciences Laboratory and Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
OSTI Identifier:
5472090
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. Lett.; (United States); Journal Volume: 51:12
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BACKGROUND RADIATION; MICROWAVE RADIATION; COSMIC RADIATION; ACCURACY; RADIOMETERS; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; MEASURING INSTRUMENTS; RADIATION DETECTORS; RADIATIONS; 640101* - Astrophysics & Cosmology- Cosmic Radiation

Citation Formats

Smoot, G.F., De Amici, G., Friedman, S.D., Witebsky, C., Mandolesi, N., Partridge, R.B., Sironi, G., Danese, L., and De Zotti, G. Low-frequency measurement of the spectrum of the cosmic background radiation. United States: N. p., 1983. Web. doi:10.1103/PhysRevLett.51.1099.
Smoot, G.F., De Amici, G., Friedman, S.D., Witebsky, C., Mandolesi, N., Partridge, R.B., Sironi, G., Danese, L., & De Zotti, G. Low-frequency measurement of the spectrum of the cosmic background radiation. United States. doi:10.1103/PhysRevLett.51.1099.
Smoot, G.F., De Amici, G., Friedman, S.D., Witebsky, C., Mandolesi, N., Partridge, R.B., Sironi, G., Danese, L., and De Zotti, G. Mon . "Low-frequency measurement of the spectrum of the cosmic background radiation". United States. doi:10.1103/PhysRevLett.51.1099.
@article{osti_5472090,
title = {Low-frequency measurement of the spectrum of the cosmic background radiation},
author = {Smoot, G.F. and De Amici, G. and Friedman, S.D. and Witebsky, C. and Mandolesi, N. and Partridge, R.B. and Sironi, G. and Danese, L. and De Zotti, G.},
abstractNote = {Measurements have been made of the cosmic-background-radiation spectrum at five wavelengths (0.33, 0.9, 3, 6.3, and 12 cm) with use of radiometers with wavelength-scaled corrugated-horn antennas having very low sidelobes. A single large-mouth (0.7-m-diam) 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.},
doi = {10.1103/PhysRevLett.51.1099},
journal = {Phys. Rev. Lett.; (United States)},
number = ,
volume = 51:12,
place = {United States},
year = {Mon Sep 19 00:00:00 EDT 1983},
month = {Mon Sep 19 00:00:00 EDT 1983}
}