1962 K
15 pp.
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TitleAn Analysis of Recent Measurements of the Temperature of the Cosmic Microwave Background Radiation
Author(s)Smoot, G.; Levin, S. M.; Witebsky, C.; De Amici, G.; Rephaeli, Y.
Publication DateJuly 1987
Report NumberLBL--23781
Unique IdentifierACC0185
Other NumbersOSTI ID: 893044
Research OrgLawrence Berkeley Laboratory (LBL) [Ernest Orlando Lawrence Berkeley National Laboratory (LBNL)], Berkeley, CA (US)
Contract NoAC03-76SF00098
Sponsoring OrgU. S. Department of Energy (USDOE)
Other InformationAstrophysical Journal, Vol. 331, 1988
KeywordsCosmic Microwave Background Radiation, X-ray Background, Cosmology
Related Web PagesGeorge Smoot, Blackbody, and Anisotropyof the Cosmic Microwave Background Radiation
AbstractThis paper presents an analysis of the results of recent temperature measurements of the cosmic microwave background radiation (CMBR). The observations for wavelengths longer than 0.1 cum are well fit by a blackbody spectrum at 2.74{+ or -}0.0w K; however, including the new data of Matsumoto et al. (1987) the result is no longer consistent with a Planckian spectrum. The data are described by a Thomson-distortion parameter u=0.021{+ or -}0.002 and temperature 2.823{+ or -}0.010 K at the 68% confidence level. Fitting the low-frequency data to a Bose-Einstein spectral distortion yields a 95% confidence level upper limit of 1.4 x 10{sup -2} on the chemical potential mu{sub 0}. These limits on spectral distortions place restrictions on a number of potentially interesting sources of energy release to the CMBR, including the hot intergalactic medium proposed as the source of the X-ray background.
1962 K
15 pp.
View Document 

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