10 citations · 15 across the 5 of their papers we have counts for
5 papers
Geodesic Structure of the Accelerated Stephani Universe
Irina Bormotova, Elena Kopteva, Zdenek Stuchlik
For the spherically symmetric Stephani cosmological model with an accelerated expansion, we investigate the main scenarios of the test particle and photon motion. We show that a co…
Accelerated expansion of the universe from the perspective of inhomogeneous cosmology
I. Bormotova, E. Kopteva, M. Churilova +1
We present a special case of the Stephani solution with spherical symmetry while considering different values of spatial curvature. We investigate the dynamics of the universe evol…
Accelerated Expansion of the Universe in the Model with Non-Uniform Pressure
Elena Kopteva, Irina Bormotova, Maria Churilova +1
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 as possible alternat…
Exact solution for a black hole embedded in a nonstatic dust-filled universe
Elena Kopteva, Pavlina Jaluvkova, Irina Bormotova +1
An exact solution of the Lemaître--Tolman--Bondi class is investigated as a possible model of the Schwarzschild-like black hole embedded in a non-static dust-filled universe for th…
Geodesic motion of test particles in Korkina-Grigoryev metric
Irina Bormotova, Elena Kopteva
We study the geodesic structure of the Korkina-Grigoryev spacetime. The corresponding metric is a generalization of the Schwarzschild geometry to the case involving a massless scal…