Cosmological Implications of a Large Complete Quasar Sample

Details Cosmological Implications of a Large Complete Quasar Sample Cosmological Implications of a Large Complete Quasar Sample

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pnas...95.4804s&link_type=abstract

Proceedings of the National Academy of Sciences of the United States of America, Volume 95, Issue 9, pp. 4804-4807

Mathematics

Logic

3

Scientific paper

Objective and reproducible determinations of the probabilistic significance levels of the deviations between theoretical cosmological prediction and direct model-independent observation are made for the Large Bright Quasar Sample [Foltz, C., Chaffee, F. H., Hewett, P. C., MacAlpine, G. M., Turnshek, D. A., et al. (1987) Astron. J. 94, 1423-1460]. The Expanding Universe model as represented by the Friedman-Lemaitre cosmology with parameters qo = 0, Λ = 0 denoted as C1 and chronometric cosmology (no relevant adjustable parameters) denoted as C2 are the cosmologies considered. The mean and the dispersion of the apparent magnitudes and the slope of the apparent magnitude-redshift relation are the directly observed statistics predicted. The C1 predictions of these cosmology-independent quantities are deviant by as much as 11σ from direct observation; none of the C2 predictions deviate by >2σ . The C1 deviations may be reconciled with theory by the hypothesis of quasar ``evolution,'' which, however, appears incapable of being substantiated through direct observation. The excellent quantitative agreement of the C1 deviations with those predicted by C2 without adjustable parameters for the results of analysis predicated on C1 indicates that the evolution hypothesis may well be a theoretical artifact.

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