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Scientific results from COBENASA's Cosmic Background Explorer (COBE) carries three scientific instruments to make precise measurements of the spectrum and anisotropy of the cosmic microwave background (CMB) radiation on angular scales greater than 7 deg and to conduct a search for a diffuse cosmic infrared background (CIB) radiation with 0.7 deg angular resolution. Data from the Far-Infrared Absolute Spectrophotometer (FIRAS) show that the spectrum of the CMB is that of a blackbody of temperature T = 2.73 +/- 0.06 K, with no deviation from a blackbody spectrum greater than 0.25% of the peak brightness. The first year of data from the Differential Microwave Radiometers (DMR) show statistically significant CMB anisotropy. The anisotropy is consistent with a scale invariant primordial density fluctuation spectrum. Infrared sky brightness measurements from the Diffuse Infrared Background Experiment (DIRBE) provide new conservative upper limits to the CIB. Extensive modeling of solar system and galactic infrared foregrounds is required for further improvement in the CIB limits.
Document ID
19950049970
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bennett, C. L.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Boggess, N. W.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Cheng, E. S.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Hauser, M. G.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Kelsall, T.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Mather, J. C.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Moseley, S. H., Jr.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Murdock, T. L.
(Lawrence Berkeley Lab. Berkeley, CA, US, United States)
Shafer, R. A.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Silverberg, R. F.
(NASA Goddard Space Flight Center Greenbelt, MD, US, United States)
Date Acquired
August 16, 2013
Publication Date
December 1, 1993
Publication Information
Publication: Advances in Space Research
Volume: 13
Issue: 12
ISSN: 0273-1177
Subject Category
Astrophysics
Accession Number
95A81569
Distribution Limits
Public
Copyright
Other

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