The temperature of the cosmic background radiation: Results from the 1987 and 1988 measurements at 3. 8 GHz

Journal Article · Fri Aug 10 00:00:00 EDT 1990 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/169052· OSTI ID:7158538

Amici, G De; Bensadoun, M; Bersanelli, M; Kogut, A; Levin, S; Smoot, G F; Witebsky, C ^[1]

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1. Lawrence Berkeley Lab., CA (United States)

The low-frequency (Rayleigh-Jeans) spectrum of the cosmic background radiation (CBR) is expected to contain information relevant to the physical processes that occurred in the early universe. In this paper, the authors have measured the temperature of the cosmic background radiation (CBR) at a frequency of 3.8 GHz (7.9 cm wavelength), during two consecutive summers, obtaining a brightness temperature, T{sub CBR}, of 2.56 {plus minus} 0.08 K in 1987 and 2.71 {plus minus} 0.07 K in 1988 (68% confidence level). The new results are in agreement with their previous measurement at 3.7 GHz obtained in 1986 and have smaller error bars. Combining measurements from all 3 years, they obtain T{sub CBR} = 2.64 {plus minus} 0.07 K.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7158538
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
RELICT RADIATION
TEMPERATURE MEASUREMENT
COMPARATIVE EVALUATIONS
COSMOLOGY
DATA
EARTH ATMOSPHERE
ERRORS
MEASURING METHODS
MILKY WAY
RADIOMETERS
ELECTROMAGNETIC RADIATION
EVALUATION
GALAXIES
INFORMATION
MEASURING INSTRUMENTS
MICROWAVE RADIATION
RADIATION DETECTORS
RADIATIONS
661300* - Other Aspects of Physical Science- (1992-)