Observational Constraints on Tensor Perturbations in Cosmological Models with Dynamical Dark Energy

Sergijenko, O.

doi:10.5506/aphyspolbsupp.10.411

Search citation statements

Order By: Relevance

Paper Sections

Select...

Results1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2019

Publication Types

Select...

Article1

Relationship

Self Cite1

Independent0

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 10 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The models with parameters on upper 1σ and 2σ confidence limits are quintessential, those with parameters on lower 1σ and 2σ confidence limits are phantom. This is in agreement with results obtained in [20] for the cosmological model with free tensor spectral index n t .…”

Section: Resultssupporting

confidence: 92%

Constraints on the dark energy with barotropic equation of state: assessing the importance of different observations

Sergijenko

2019

Adv.Astron.Spa.Physics

Self Cite

View full text Add to dashboard Cite

For dynamical dark energy with the barotropic equation of state we determine the mean values of parameters and their confidence ranges together with other cosmological parameters on the basis of different combined datasets. The used observations include Planck data on CMB temperature anisotropy, E-mode polarization and lensing, BICEP2/Keck Array data on B-mode polarization, BAO from SDSS and 6dFGS, power spectrum of galaxies from WiggleZ, weak lensing from CFHTLenS and SN Ia data from the JLA compilation. We find that all but one mean models are phantom, mean values of the equation of state parameter at current epoch are close to −1 and constraints on the adiabatic sound speed of dark energy are weak. We investigate the effect of CMB polarization data on the dark energy parameters estimation. We discuss also which type of data on the large scale structure of the Universe allows to determine the dark energy parameters most precisely.

show abstract

Section: Resultssupporting

confidence: 92%