Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...316l...5s&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 316, May 1, 1987, p. L5, L6.
Astronomy and Astrophysics
Astrophysics
1
Cosmology, Quasars, Red Shift
Scientific paper
The probabilities of deviations between chronometric predictions and high-redshift quasar observations are examined. The main principles of the chronometric theory of Segal (1972) are discussed. The Schmidt et al. (1986) observations of 10 quasars in the range z = 0.7-2.7 and observations of eight quasars in the range z = 1.00-2.76 are compared with the observations of no quasars in the range z = 2.7-4.9 and z = 2.9-5.0, respectively, and the probabilities are calculated. Also the Koo and Kron (1986) observation of seven quasars with z greater than 2.2 is contrasted with the observation of 32 quasars in the range z = 0.9-3.1, and the probabilities are again estimated. It is noted that the observed high-redshift quasar cutoff shows no statistically significant departure from the predictions of the nonevolutionary and nonparametric chronometric cosmology.
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