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Structure in the COBE differential microwave radiometer first-year maps

G. F. SmootLawrence Berkeley Laboratory; California, University Berkeley, United StatesC. L. BennettNASA Goddard Space Flight Center Greenbelt, MD., United StatesA. KogutUniversities Space Research Association; NASA, Goddard Space Flight Center Greenbelt, MD, United StatesE. L. WrightCalifornia, University Los Angeles, United StatesJ. AymonN. W. BoggessNASA Goddard Space Flight Center Greenbelt, MD., United StatesE. S. ChengNASA Goddard Space Flight Center Greenbelt, MD., United StatesGiovanni De AmiciS. GulkisJPL Pasadena, CA, United StatesM. G. HauserNASA Goddard Space Flight Center Greenbelt, MD., United StatesG. HinshawP. JacksonM. A. JanssenEd KaitaT. KelsallP. KeegstraCharles H. LineweaverK. LoewensteinP. M. LubinJohn MatherS. S. MeyerS. H. MoseleyT. L. MurdockL. RokkeR. F. SilverbergLuis TenorioR. WeißD. T. Wilkinson

1992en

ABI

Annotatsiya

Results 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.

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DOI: 10.1086/186504

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