Title: Measurement of the cosmic microwave background spectrum by the COBE FIRAS instrument
Abstract: view Abstract Citations (710) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Measurement of the Cosmic Microwave Background Spectrum by the COBE FIRAS Instrument Mather, J. C. ; Cheng, E. S. ; Cottingham, D. A. ; Eplee, R. E., Jr. ; Fixsen, D. J. ; Hewagama, T. ; Isaacman, R. B. ; Jensen, K. A. ; Meyer, S. S. ; Noerdlinger, P. D. ; Read, S. M. ; Rosen, L. P. ; Shafer, R. A. ; Wright, E. L. ; Bennett, C. L. ; Boggess, N. W. ; Hauser, M. G. ; Kelsall, T. ; Moseley, S. H., Jr. ; Silverberg, R. F. ; Smoot, G. F. ; Weiss, R. ; Wilkinson, D. T. Abstract The cosmic microwave background radiation (CMBR) has a blackbody spectrum within 3.4 X 10^-8^ ergs cm^-2^ s^-1^ sr^-1^ cm over the frequency range from 2 to 20 cm^-1^ (5-0.5 mm). These measurements, derived from the FIRAS instrument on the COBE satellite, imply stringent limits on energy release in the early universe after t~1 year and redshift z~3 x 10^6^. The deviations are less than 0.03% of the peak brightness, with an rms value of 0.01%, and the dimensionless cosmological distortion parameters are limited to |y| < 2.5 x 10^-5^ and |μ| < 3.3 x 10^-4^(95% confidence level). The temperature of the CMBR is 2.726 +/- 0.010 K (95% confidence level systematic). Publication: The Astrophysical Journal Pub Date: January 1994 DOI: 10.1086/173574 Bibcode: 1994ApJ...420..439M Keywords: Background Radiation; Cosmic Rays; Cosmology; Far Infrared Radiation; Infrared Spectrophotometers; Microwave Spectra; Universe; Black Body Radiation; Brightness Distribution; Calibrating; Cosmic Background Explorer Satellite; Data Processing; Error Analysis; Red Shift; Astrophysics; COSMOLOGY: COSMIC MICROWAVE BACKGROUND; COSMOLOGY: EARLY UNIVERSE; COSMOLOGY: OBSERVATIONS full text sources ADS |