Observational constraints on finite scale factor singularities

Abstract

We discuss the combined constraints on a Finite Scale Factor Singularity (FSF) universe evolution scenario, which come from the shift parameter R, baryon acoustic oscillations (BAO) A, and from the type Ia supernovae. We show that observations allow existence of such singularities in the 2x10^9 years, in future, at the 1σ CL, and that at the present moment of the cosmic evolution, one cannot differentiate between cosmological scenario which allow finite scale factor singularities and the standard dark energy models. We also show that there is an allowed value of m = 2/3 within 1σ CL, which corresponds to a dust-filled Einstein-de-Sitter universe limit of the early time evolution.

6 pages, some misprints corrected

References in corpus (14)

• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• A Parameterized Post-Friedmann Framework for Modified Gravity
• Measuring the dark side (with weak lensing)
• A discriminating probe of gravity at cosmological scales
• Are loop quantum cosmos never singular?
• Non-minimally coupled canonical, phantom and quintom models of holographic dark energy
• Classification of cosmological milestones
• Constraints on a New Post-General Relativity Cosmological Parameter
• Observational constraints on the linear fluctuation growth rate
• Barotropic index w-singularities in cosmology
• Classical Stability of Sudden and Big Rip Singularities
• How far is it to a sudden future singularity of pressure?
• Singularities in loop quantum cosmology
• Cosmological tests of sudden future singularities

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• Redshift drift test of exotic singularity universes
• Dark energy and dark matter perturbations in singular universes
• Sudden Future Singularities in Quintessence and Scalar-Tensor Quintessence Models
• Is a pole type singularity an alternative to inflation?
• Future soft singularities, Born-Infeld-like fields and particles
• Dynamical dark energy models with singularities in the view of the forthcoming results of the growth observations
• Scale-dependent perturbations finally detectable by future galaxy surveys and their contribution to cosmological model selection
• Criticality and Big Brake singularities in the tachyonic evolutions of closed Friedmann universes with cold dark matter