Can the lumpy distribution of galaxies be reconciled with the smooth X-ray background?

The fluctuations in X-ray background intensity that would be generated by clusters or superclusters of galaxies exceed those observed. It may be that the X-ray background arises from low-luminosity objects which are distributed much more smoothly and are more numerous than bright optical galaxies. H...

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Bibliographic Details
Published inNature (London) Vol. 228; no. 5277; p. 1170
Main Authors Wolfe, A M, Burbidge, G R
Format Journal Article
LanguageEnglish
Published England 19.12.1970
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Summary:The fluctuations in X-ray background intensity that would be generated by clusters or superclusters of galaxies exceed those observed. It may be that the X-ray background arises from low-luminosity objects which are distributed much more smoothly and are more numerous than bright optical galaxies. Hierarchical universe models in which the distribution of X-ray sources follows the cosmological mass distribution are ruled out.
ISSN:0028-0836
DOI:10.1038/2281170a0