A simple test of independence for truncated data with applications to redshift surveys

Details A simple test of independence for truncated data with applications to redshift surveys A simple test of independence for truncated data with applications to redshift surveys

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...399..345e&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 399, no. 2, p. 345-352.

Astronomy and Astrophysics

Astronomy

63

Galactic Structure, Red Shift, Sky Surveys (Astronomy), Statistical Tests, Distribution Functions, Luminosity, Quasars

Scientific paper

This paper presents an easily applied permutation test for H0, closely related to Lyden-Bell's (1971) estimate of the marginal distribution of truncated data. The test is applied to two redshift-magnitude surveys, one of galaxies and one of quasars. Assuming statistical independence, testing H0 amounts to testing validity of the cosmological model. Segal's (1986) chronomatic cosmological model is rejected under H0. On the other hand, for the quasar sample H0 is rejected strongly in a conventional cosmological model (and in a chronomatic model as well) indicating either incorrectness of the models or, as is more commonly assumed, indicating strong luminosity evolution.

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