Uniformity of quasars in the chronometric cosmology

Details Uniformity of quasars in the chronometric cosmology Uniformity of quasars in the chronometric cosmology

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...144l..23s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 144, no. 2, March 1985, p. L23-L26.

Statistics

4

Cosmology, Luminosity, Quasars, Statistical Analysis, Big Bang Cosmology, Goodness Of Fit, Magnitude, Nonparametric Statistics, Red Shift, Regression Analysis

Scientific paper

Bright quasars form a standard candle within the framework of the chronometric cosmology, without evolution. The standard deviation of the portion of the luminosity function observed in the Palomar Bright Quasar Survey at redshifts above 0.1 is estimated to be less than 1/2-mag., with due allowance for the observational magnitude cutoff bias by an optimal nonparametric statistical method known as 'ROBUST'. The inclusion of deeper complete samples as reported by Schmidt and Green (1983) does not affect this value. Apparent luminosity evolution within the framework of a Friedman cosmology is shown to be as predicted by the chronometric cosmology.

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