Structure in the COBE differential microwave radiometer first-year maps

  title={Structure in the COBE differential microwave radiometer first-year maps},
  author={George F. Smoot and Charles L. Bennett and Alan Kogut and Edward L. Wright and J. Aymon and Nancy W. Boggess and Edward S. Cheng and Giovanni De Amici and Samuel Gulkis and Michael G. Hauser and Gary F. Hinshaw and Peter Douglas Jackson and Michael A. Janssen and Ed Kaita and Thomas Kelsall and Phillip B. Keegstra and C. Lineweaver and Kurt L{\"o}wenstein and Philip Lubin and John C. Mather and Stephan S. Meyer and Samuel H. Moseley and Thomas Lee Murdock and Laurie Ann Rokke and Robert F. Silverberg and L. Tenorio and Rainer Weiss and David Todd Wilkinson},
  journal={The Astrophysical Journal},
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… 
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