On the time evolution of the redshift and the luminosity distance

Details On the time evolution of the redshift and the luminosity distance On the time evolution of the redshift and the luminosity distance

2002-09-09

arxiv.org/abs/astro-ph/0209158v1

Astronomy and Astrophysics

Astrophysics

submitted to ApJ

Scientific paper

We investigate the temporal evolution of the redshift and the luminosity distance within the standard Friedmann-Roberston-Walker cosmological model. The redshift and luminosity distance of sources evolve with time and we show that they tend to given values, namely the stable equilibrium states associated to the first order differential equation they verify. This suggests that the sources concentrate at about these values. Furthermore, as these values depend only on the cosmological parameters, their measure could provide a new approach to determine the value of the cosmological constant.

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