Probing dark energy with supernovae: A concordant or a convergent model?

Journal Article · Wed Dec 15 00:00:00 EST 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.121301· OSTI ID:20698193

Virey, J -M; Taxil, P ^[1]; Ealet, A; Tao, C; Tilquin, A; Bonissent, A; Fouchez, D ^[2]

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1. Centre de Physique Theorique, CNRS-Luminy Case 907, F-13288 Marseille Cedex 9 (France) and Universite de Provence, Marseille (France)
2. Centre de Physique des Particules de Marseille, CNRS-Luminy Case 907, F-13288 Marseille Cedex 9 (France)

We present a revised interpretation of recent analysis of supernovae data. We evaluate the effect of the priors on the extraction of the dark energy equation of state. We find that the conclusions depend strongly on the {omega}{sub M} prior value and on its uncertainty and show that a biased fitting procedure applied on non concordant simulated data can converge to the 'concordance model'. Relaxing the prior on {omega}{sub M} points to other sets of solutions, which are not excluded by observational data.

• OSTI ID: 20698193
• Journal Information: Physical Review. D, Particles Fields, Vol. 70, Issue 12; Other Information: DOI: 10.1103/PhysRevD.70.121301; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGY
EQUATIONS OF STATE
MATHEMATICAL SOLUTIONS
NONLUMINOUS MATTER
SUPERNOVAE