Cosmological tests of sudden future singularities

Abstract

We discuss combined constraints, coming from the cosmic microwave background shift parameter $\mathcal{R}$, baryon acoustic oscillations (BAO) distance parameter $\mathcal{A}$, and from the latest type Ia supernovae data, imposed on cosmological models which allow sudden future singularities of pressure. We show that due to their weakness such sudden singularities may happen in the very near future and that at present they can mimic standard dark energy models.

8 pages, 2 references added

References in corpus (11)

• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• Classification of cosmological milestones
• Pseudo-rip: Cosmological models intermediate between the cosmological constant and the little rip
• Barotropic index w-singularities in cosmology
• Strings at future singularities
• How far is it to a sudden future singularity of pressure?
• $w$-cosmological singularities
• Hidden past of dark energy cosmological models
• Tachyon cosmology, supernovae data and the Big Brake singularity
• Will the tachyonic Universe survive the Big Brake?

Cited by in corpus (29)

• Teleparallel Gravity: From Theory to Cosmology
• Cosmological bouncing solutions in f(T,B) gravity
• Finite-time Cosmological Singularities and the Possible Fate of the Universe
• Quantum cosmology and late-time singularities
• Regularizing cosmological singularities by varying physical constants
• The paradox of soft singularity crossing and its resolution by distributional cosmological quantitities
• Recent advances in cosmological singularities
• Grand Rip and Grand Bang/Crunch cosmological singularities
• Cosmological evolution, future singularities, Little Rip and Pseudo-Rip in viable f(R) theories and their scalar-tensor counterpart
• Redshift drift in a pressure-gradient cosmology
• Generic absence of strong singularities and geodesic completeness in modified loop quantum cosmologies
• Density preturbations in a finite scale factor singularity universe
• The fate of bound systems through Sudden Future Singularities
• Initial directional singularity in inflationary models
• Observational constraints on finite scale factor singularities
• Combined cosmological tests of a bivalent tachyonic dark energy scalar field model
• Variations of the fine-structure constant $\alpha$ in exotic singularity models
• Redshift drift test of exotic singularity universes
• Dark energy and dark matter perturbations in singular universes
• Entropic force, running gravitational coupling and future singularities
• New futures for cosmological models
• Effects of a Late Gravitational Transition on Gravitational Waves and Anticipated Constraints
• Future soft singularities, Born-Infeld-like fields and particles
• Is a pole type singularity an alternative to inflation?
• Dynamical dark energy models with singularities in the view of the forthcoming results of the growth observations
• Sudden cosmological singularities in Aether scalar-tensor theories
• Singularities in inflationary cosmological models
• Cosmic anisotropic doomsday in Bianchi type I universes
• Criticality and Big Brake singularities in the tachyonic evolutions of closed Friedmann universes with cold dark matter