179 citations · 2.2k across the 65 of their papers we have counts for
14 papers · 1 filter
Bayesian analysis of the backreaction models
Aleksandra Kurek, Krzysztof Bolejko, Marek Szydlowski
We present the Bayesian analysis of four different types of backreation models, which are based on the Buchert equations. In this approach, one considers a solution to the Einstein…
Pressure gradients, shell crossing singularities and acoustic oscillations - application to inhomogeneous cosmological models
Krzysztof Bolejko, Paul Lasky
Inhomogeneous cosmological models have recently become a very interesting alternative to standard cosmology. This is because these models are able to fit cosmological observations…
Volume averaging in the quasispherical Szekeres model
Krzysztof Bolejko
This paper considers the volume averaging in the quasispherical Szekeres model. The volume averaging became of considerable interest after it was shown that the volume acceleration…
Apparent and average acceleration of the Universe
Krzysztof Bolejko, Lars Andersson
In this paper we consider the relation between the volume deceleration parameter obtained within the Buchert averaging scheme and the deceleration parameter derived from the supern…
Testing the Copernican Principle via Cosmological Observations
Krzysztof Bolejko, J. Stuart B. Wyithe
Observations of distances to Type-Ia supernovae can be explained by cosmological models that include either a gigaparsec-scale void, or a cosmic flow, without the need for Dark Ene…
Evolution of a void and an adjacent galaxy supercluster in the quasispherical Szekeres model
Krzysztof Bolejko
This paper investigates the evolution of a void and an adjacent galaxy supercluster. For this purpose the quasispherical Szekeres model is employed. The Szekeres model is an exact…