172 citations · 1.1k across the 34 of their papers we have counts for
Showing 2009 · gr-qcShow all
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gr-qc2009
Modelling Inhomogeneity in the Universe
Charles Hellaby
An overview of some recent developments in inhomogeneous models is presented. As the volume and precision of cosmological data improves, it will become more and more essential to u…
gr-qc2009★ 24 cited
The Lemaitre Model and the Generalisation of the Cosmic Mass
Alnadhief A. H. Alfedeel, Charles Hellaby
We consider the spherically symmetric metric with a comoving perfect fluid and non-zero pressure -- the Lemaitre metric -- and present it in the form of a calculational algorithm.…
gr-qc2009★ 41 cited
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…