Constraining the Dark Universe
نویسندگان
چکیده
We combine complementary datasets to constrain dark energy. Using standard Big Bang Nucleosynthesis and the observed abundances of primordial nuclides to put constraints on ΩQ at temperatures near T ∼ 1MeV , we find the strong constraint ΩQ(MeV) < 0.045 at 2σ c.l.. Under the assumption of flatness, using results from Cosmic Microwave Background (CMB) anisotropy measurements, high redshift supernovae (SN-Ia) observations and data from local cluster abundances we put a new constraint on the equation of state parameter wQ < −0.85 at 68% c.l..
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