On the time evolution of the redshift and the luminosity distance
msra(2002)
摘要
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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关键词
cosmological constant,differential equation,first order,equilibrium state
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