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Astron. Astrophys. 348, 1-7 (1999)

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Flat Friedmann-Robertson-Walker cosmologies with adiabatic matter creation: kinematic tests

J.A.S. Lima and J.S. Alcaniz

Departamento de Fisica, UFRN, C.P 1641, 59072-970 Natal, Brasil

Received 28 September 1998 / Accepted 1 February 1999


We investigate observational consequences of a cosmological scenario driven by adiabatic matter creation. Exact expressions for the lookback time, age of the universe, luminosity distance, angular diameter, and galaxy number counts versus redshift are derived and their meaning discussed in detail. The expressions of the conventional FRW models are significantly modified and provide a powerful method to limit the parameters of the models.

Key words: cosmology: theory

Send offprint requests to: J.A.S. Lima (limajas@dfte.ufrn.br)

© European Southern Observatory (ESO) 1999

Online publication: July 16, 1999