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Structure in the COBE differential microwave radiometer first-year mapsResults of the first year of data from the differential microwave radiometers on the Cosmic Background Explorer are presented. Statistically significant structure that is well described as scale-invariant fluctuations with a Gaussian distribution is shown. The rms sky variation, smoothed to a total 10-deg FWHM Gaussian, is 30 +/-5 micro-K for Galactic latitude greater than 20-deg data with the dipole anisotropy removed. The rms cosmic quadrupole amplitude is 13 +/-4 micro-K. The angular autocorrelation of the signal in each radiometer channel and cross-correlation between channels are consistent and give a primordial fluctuation power-law spectrum with index of 1.1 +/-0.5, and an rms-quadrupole-normalized amplitude of 16 +/-4 micro-K. These features are in accord with the Harrison-Zel'dovich spectrum predicted by models of inflationary cosmology.
Document ID
19920069709
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/186504
Authors
Smoot, G. F. (Lawrence Berkeley Laboratory; California, University Berkeley, United States)
Bennett, C. L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kogut, A. (Universities Space Research Association; NASA, Goddard Space Flight Center Greenbelt, MD, United States)
Wright, E. L. (California, University Los Angeles, United States)
Aymon, J. (Lawrence Berkeley Laboratory; California, University Berkeley, 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)
De Amici, G. (Lawrence Berkeley Laboratory; California, University Berkeley, United States)
Gulkis, S. (JPL Pasadena, CA, United States)
Hauser, M. G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
September 1, 1992
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 396
Issue: 1, Se
ISSN: 0004-637X
Subject Category
Space Radiation
Report/Patent Number
ISSN: 0004-637X
Accession Number
92A52333
Distribution Limits
Public
Copyright
Other

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