179 citations · 2.2k across the 65 of their papers we have counts for
13 papers · 1 filter
Gravitational entropy and the cosmological no-hair conjecture
Krzysztof Bolejko
The gravitational entropy and no-hair conjectures seems to predict contradictory future states of our Universe. The growth of the gravitational entropy is associated with the growt…
Cosmological backreaction within the Szekeres model and emergence of spatial curvature
Krzysztof Bolejko
This paper discusses the phenomenon of backreaction within the Szekeres model. Cosmological backreaction describes how the mean global evolution of the Universe deviates from the F…
Inhomogeneous cosmology and backreaction: Current status and future prospects
Krzysztof Bolejko, Mikołaj Korzyński
Astronomical observations reveal hierarchical structures in the Universe, from galaxies, groups of galaxies, clusters and superclusters, to filaments and voids. On the largest scal…
Exact inhomogeneous models and the drift of light rays induced by nonsymmetric flow of the cosmic medium
Andrzej Krasiński, Krzysztof Bolejko
After introducing the Szekeres and Lema\^ıtre--Tolman cosmological models, the real-time cosmology program is briefly mentioned. Then, a few widespread misconceptions about the cos…
Geometry of the quasi-hyperbolic Szekeres models
Andrzej Krasiński, Krzysztof Bolejko
Geometric properties of the quasi-hyperbolic Szekeres models are discussed and related to the quasi-spherical Szekeres models. Typical examples of shapes of various classes of 2-di…
Apparent horizons in the quasi-spherical Szekeres models
Andrzej Krasiński, Krzysztof Bolejko
The notion of an apparent horizon (AH) in a collapsing object can be carried over from the Lema\^ıtre -- Tolman (L--T) to the quasispherical Szekeres models in three ways: 1. Liter…