Speakers
Iryna Bormotova
(Silesian University in Opava, Czech Republic)
Mariia Churilova
(Dnipropetrovsk National University)
Description
We present the particular case of the Stephani solution for shear-free perfect fluid with uniform energy density and non-uniform pressure. Such models appeared last time as possible alternative to the consideration of the exotic forms of matter like dark energy that would cause the acceleration of the Universe expansion. These models are characterised by the spatial curvature depending on time. We analyze the properties of the cosmological model obtained on the basis of exact solution of the Stephani class and adopt it to the modern observational data. We show that despite of possible singularities, the model can describe the current stage of the Universe evolution. The spatial geometry of the model is investigated. Co-authors: Mariia Churilova, Dr., Dnipropetrovsk National University, Ukraine, Elena Kopteva, Dr., Silesian University in Opava, Czech Republic.
