A search for anisotropy in the cosmic microwave radiation at medium angular scales

Details A search for anisotropy in the cosmic microwave radiation at medium angular scales A search for anisotropy in the cosmic microwave radiation at medium angular scales

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...353..140t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 353, April 10, 1990, p. 140-144. Research supported by NSF and NASA.

Astronomy and Astrophysics

Astrophysics

22

Anisotropy, Microwaves, Relic Radiation, Universe, Dark Matter, Monte Carlo Method, Power Spectra

Scientific paper

The results are reported from a search for anisotropy in the cosmic microwave radiation (CMR) at angular scales of 0.5 to 5 deg. No temperature fluctuations are detected, and limits are placed on intrinsic CMR anisotropy. These limits are expressed in terms of two models which describe the temperature fluctuations. For models specified by a Gaussian-shaped correlation function, the fluctuation amplitude is found to be 1.1 x 10 to the -4th or less at 1.1 deg; for models with monochromatic fluctuations it is 7.5 x 10 to the -5th or less at 1.7 deg. These limits satisfy the likelihood ratio test at the 95 percent confidence level. The implications of the results for large-scale structure information scenarios are discussed.

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