15 pp.
15 pp.
| 1962 K 15 pp. | |
| View Document | ||
| Title | An 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 Date | July 1987 | |
| Report Number | LBL--23781 | |
| Unique Identifier | ACC0185 | |
| Other Numbers | OSTI ID: 893044 | |
| Research Org | Lawrence Berkeley Laboratory (LBL) [Ernest Orlando Lawrence Berkeley National Laboratory (LBNL)], Berkeley, CA (US) | |
| Contract No | AC03-76SF00098 | |
| Sponsoring Org | U. S. Department of Energy (USDOE) | |
| Other Information | Astrophysical Journal, Vol. 331, 1988 | |
| Keywords | Cosmic Microwave Background Radiation, X-ray Background, Cosmology | |
| Related Web Pages | George Smoot, Blackbody, and Anisotropyof the Cosmic Microwave Background Radiation | |
| Abstract | This 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 | ||
