Mathematics – Probability
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.233p...1n&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 233, July 1, 1988, p. 1P-3P.
Mathematics
Probability
1
Anisotropy, Cosmology, Galaxies, Infrared Astronomy Satellite, Polar Caps, Probability Distribution Functions
Scientific paper
The significance of a study by Rowan-Robinson et al. (1986) is discussed, which found the 60- and 100-micron source density in the north polar cap 20 percent higher than in the south cap after exclusion of the Virgo cluster and 'cirrusy' regions. It was argued that the disparity represents a cosmologically significant anisotropy in the galaxy distribution. In response to the claim of Clowes et al. (1987) that the origin of the disparity is the local supercluster, or galaxies with diameters greater than 130 arsecs, the galaxies of this size were removed from the sample. It is found that an 18 percent density disparity remains even when these galaxies are excluded. It is argued that there is no statistical basis for dismissing the disparity and that the proposed cosmological anisotropy is a significant effect.
Needham B. G.
Rowan-Robinson Michael
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