CONSTRAINS ON THE QUINTESSENCE FROM OBSERVATIONAL DATA
Artikel i vetenskaplig tidskrift, 2011

We investigated a flat Universe where the quintessence has been approximated by the first order Chebyshev polynomials. We used different cosmological measurements: angular diameter, luminosity distance and the Hubble parameter to constrain it. The first two types of measurements favor a time dependent quintessence with a value of the quintessence at the present epoch higher than in the cosmological constant case. Hubble parameter measurements support a Universe close to the one given by the cosmological constant case.

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Författare

A. M. Badescu

Cathy Horellou

Chalmers, Rymd- och geovetenskap, Radioastronomi och astrofysik

Romanian Reports on Physics

1221-1451 (ISSN) 1841-8759 (eISSN)

Vol. 63 3 852-861

Ämneskategorier

Astronomi, astrofysik och kosmologi