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Early results from the Cosmic Background Explorer (COBE)Data obtained with the FIR Absolute Spectrophotometer, Differential Microwave Radiometers, and Diffuse IR Background Experiment (DIRBE) on the COBE satellite since its launch in November 1989 are briefly characterized. The COBE spacecraft and its 900-km 99-deg orbit are described; the scientific goals and capabilities of the instruments are reviewed; and sample DIRBE data are presented in a map and graph. Upper limits on the Comptonization parameter (y less than 0.001) and the chemical potential (mu less than 0.01 at the 3sigma level) are determined, and the spectrum of the dipole anisotropy is shown to be that of a Doppler-shifted blackbody. The DIRBE 100-micron sky brightness values at the ecliptic poles are found to be significantly lower than those measured by IRAS.
Document ID
19910049925
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mather, J. C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hauser, M. G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bennett, C. L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Boggess, N. W.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Cheng, E. S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Eplee, R. E., Jr.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Freudenreich, H. T.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Isaacman, R. B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kelsall, T.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gulkis, S.
(JPL Pasadena, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1991
Publication Information
Publication: Advances in Space Research
Volume: 11
Issue: 2, 19
ISSN: 0273-1177
Subject Category
Astronomy
Accession Number
91A34548
Distribution Limits
Public
Copyright
Other

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