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Dark energy FRW cosmology – dynamical system reconstruction

Published online by Cambridge University Press:  30 September 2008

A. Oscoz ,
E. Mediavilla ,
M. Serra-Ricart ,
M. Szydłowski  and
A. Kurek
M. Szydłowski
Affiliation:
Astronomical Observatory, Jagiellonian University, Orla 171, 30-244 Kraków, Poland Complex Systems Research Centre, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
A. Kurek
Affiliation:
Astronomical Observatory, Jagiellonian University, Orla 171, 30-244 Kraków, Poland
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Abstract

We develop a simple method of dark energy reconstruction using a geometrical form of the luminosity-distance relation. In this method the FRW dynamical system with dark energy is reconstructed instead of the equation of state parameter. We give several examples which illustrate the usefulness of our method in fitting the redshift transition from the decelerating to accelerating phase as the value of the Hubble function at the transition.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 30: Spanish Relativity Meeting - Encuentros Relativistas Españoles , ERE2007: Relativistic Astrophysics and Cosmology , 2008 , pp. 169 - 174
Copyright
© EAS, EDP Sciences, 2008

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