Is the radiation temperature-redshift relation of the standard cosmology in accordance with the data?

Details Is the radiation temperature-redshift relation of the standard cosmology in accordance with the data? Is the radiation temperature-redshift relation of the standard cosmology in accordance with the data?

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mnras.312..747l&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 312, Issue 4, pp. 747-752.

Astronomy and Astrophysics

Astronomy

32

Galaxies: Distances And Redshifts, Cosmic Microwave Background, Cosmology: Theory

Scientific paper

The radiation temperature-redshift relation for Friedmann-Robertson-Walker geometries is rediscussed in connection with recent observational data based on the fine-structure splitting of atomic and singly ionized carbon lines in quasar absorption-line systems. Indirect measurement of T(z) is one of the most powerful cosmological tests available because it may exclude even the presence of a cosmological constant. Unlike recent claims, we argue that the temperature at high z may be smaller than the standard prediction, thereby opening a window to alternative (big bang) models. By including new ingredients like a phenomenological decaying vacuum energy density and gravitational `adiabatic' photon creation as well as late inflationary models driven by a scalar field, a new temperature law is deduced and its predictions are compared with the standard result.

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