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Measurements of the cosmic microwave background temperature at 1.47 GHzWe have used a radio-frequency-gain total-power radiometer to measure the intensity of the cosmic microwave background (CMB) at a frequency of 1.47 GHz (20.4 cm wavelength) from White Mountain, California in 1988 September and from the South Pole in 1989 December. The CMB thermodynamic temperature, T(CMB), is 2.27 +/- 0.25 K (68 percent confidence limit) measured from White Mountain and 2.26 +/- 0.20 K from the South Pole site. The combined result is 2.26 +/- 0.19 K. The correction for Galactic emission has been derived from scaled low-frequency maps and constitutes the main source of error. The atmospheric signal is extrapolated from our zenith scan measurements at higher frequencies. These results are consistent with our previous measurement at 1.41 GHz and about 2.5 sigma from the 2.74 +/- 0.01 K global average CMB temperature.
Document ID
19930053229
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Bensadoun, M.
(California Univ.; Lawrence Berkeley Lab., Berkeley, United States)
Bersanelli, M.
(California Univ.; Lawrence Berkeley Lab., Berkeley; CNR, Ist. di Fisica Cosmica, Milan, Italy)
De Amici, G.
(California Univ.; Lawrence Berkeley Lab., Berkeley, United States)
Kogut, A.
(Universities Space Research Association; NASA, Goddard Space Flight Center Greenbelt, MD, United States)
Levin, S. M.
(JPL Pasadena, CA, United States)
Limon, M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Smoot, G. F.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Witebsky, C.
(California Univ.; Lawrence Berkeley Lab., Berkeley, United States)
Date Acquired
August 16, 2013
Publication Date
May 20, 1993
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 409
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A37226
Funding Number(s)
CONTRACT_GRANT: DE-AC03-76SF-00098
CONTRACT_GRANT: NSF DPP-87-16548
CONTRACT_GRANT: NSF AST-84-06187
Distribution Limits
Public
Copyright
Other

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