Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...313l...1j&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 313, Feb. 1, 1987, p. L1-L4. NASA-NSF-supported res
Astronomy and Astrophysics
Astrophysics
61
Brightness Temperature, Centimeter Waves, Error Analysis, Relic Radiation, Temperature Measurement, Black Body Radiation, Cosmology, Dicke Radiometers, Extraterrestrial Radiation, Microwaves
Scientific paper
Results are reported of a direct measurement of the cosmic microwave radiation temperature using a special Dicke radiometer (wavelength = 1.2 cm) designed to minimize the usual systematic errors. The experiment was performed at balloon altitudes to avoid atmospheric emission. The first flight gives a cosmic microwave radiation temperature of 2.783 + or - 0.025 K, where the error is due to several errors (mostly systematic) added by quadrature. This is the most accurate direct measurement (by a factor of 3) yet reported.
Johnson David G.
Wilkinson David T.
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