64 citations · 506 across the 19 of their papers we have counts for
19 papers
Cosmological models and misunderstandings about them
Andrzej Krasiński
Advantages of inhomogeneous cosmological models that are exact solutions of Einstein's equations over linearised perturbations of homogeneous models are presented. Examples of effe…
The charged dust solution of Ruban -- matching to Reissner--Nordström and shell crossings
Andrzej Krasiński, Gabriel Giono
The maximally extended Reissner--Nordström (RN) manifold with begs for attaching a material source to it that would preserve the infinite chain of asymptotically flat r…
Formation of Gyrs old black holes in the center of galaxies within the Lema\^ıtre--Tolman model
Przemysław Jacewicz, Andrzej Krasiński
In this article we present a model of formation of a galaxy with a black hole in the center. It is based on the Lema\^ıtre--Tolman solution and is a refinement of an earlier model.…
Imitating accelerated expansion of the Universe by matter inhomogeneities - corrections of some misunderstandings
Andrzej Krasinski, Charles Hellaby, Krzysztof Bolejko +1
A number of misunderstandings about modeling the apparent accelerated expansion of the Universe, and about the `weak singularity' are clarified: 1. Of the five definitions of the d…
Physical and Geometrical Interpretation of the epsilon <= 0 Szekeres Models
Charles Hellaby, Andrzej Krasinski
We study the properties and behaviour of the quasi-pseudospherical and quasi-planar Szekeres models, obtain the regularity conditions, and analyse their consequences. The quantitie…
Avoidance of singularities in spherically symmetric charged dust
Andrzej Krasinski, Krzysztof Bolejko
In spherically symmetric charged dust, just like in electrically neutral dust, two kinds of singularity may be present: the Big Bang/Crunch (BB/BC) singularity, and shell crossings…