The Apparent Motion-Redshift Relation and the Inflationary Universe

Details The Apparent Motion-Redshift Relation and the Inflationary Universe The Apparent Motion-Redshift Relation and the Inflationary Universe

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998iraj...25...21u&link_type=abstract

Irish Astronomical Journal, 1998, 25(1), 21

Astronomy and Astrophysics

Astronomy

Scientific paper

We show that the apparent motion--redshift (mu-z) upper envelope relation for a homogeneous sample of quasars can be interpreted in terms of an inflationary universe with bulk Lorentz factor gamma = 18-36 for Hubble's constant H0 = 100-50 km s^-1 Mpc^-1. This is a factor of two higher than gamma = 9-18 obtained by Cohen et al. (1988) in the Einstein-de Sitter universe. It is shown that the two results can be reconciled if it is assumed that there is evolution of gamma with redshift in the inflationary universe. A simple power-law evolution of the sort gamma = gamma0 (1+z)^m shows that only a mild evolution with m ~ 0.75 will be required.

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