Comments on the Correlation Function Analysis of the COBE-DMR First-Year Sky Maps

Details Comments on the Correlation Function Analysis of the COBE-DMR First-Year Sky Maps Comments on the Correlation Function Analysis of the COBE-DMR First-Year Sky Maps

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...18312104l&link_type=abstract

American Astronomical Society, 183rd AAS Meeting, #121.04; Bulletin of the American Astronomical Society, Vol. 25, p.1473

Astronomy and Astrophysics

Astrophysics

Scientific paper

The two-point temperature correlation function, C(alpha ), provides an important characterization of cosmic microwave background anisotropies as seen in the first-year DMR sky maps. We investigate the extent to which the noise in the DMR sky maps is correlated from pixel to pixel, and determine the effect of such correlations on C(alpha ). We use Monte Carlo simulations to quantify the effects of uneven sampling, beam smoothing, galactic cut, multipole subtraction and binning choice. Additionally, we compare several methods used to obtain the quadrupole normalization Q_{rms-PS} and the power law spectral index n from the correlation function. The National Aeronautics and Space Administration/Goddard Space Flight Center (NASA/GSFC) is responsible for the design, development, and operation of the Cosmic Background Explorer (COBE). The COBE program is supported by the Astrophysics Division of NASA's Office of Space Science and Applications.

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