542 citations
- Ghent University HospitalBE4 papers
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5 papers · 1 filter
LTB solutions in Newtonian gauge: from strong to weak fields
Karel Van Acoleyen
Lemaitre-Tolman-Bondi (LTB) solutions are used frequently to describe the collapse or expansion of spherically symmetric inhomogeneous mass distributions in the Universe. These exa…
A Petrov type I and generically asymmetric rotating dust family
Lode Wylleman
The general line element corresponding to the family of algebraically general, gravito-electric, expanding, rotating dust models with one functionally independent zero-order Rieman…
Purely radiative perfect fluids with degenerate shear tensor
H. R. Karimian, N. Van den Bergh, L. De Groote
We consider non-rotating geodesic perfect fluid spacetimes which are purely radiative in the sense that the gravitational field satisfies the covariant transverse conditions div H…
Shearfree perfect fluids with solenoidal magnetic curvature and a gamma-law equation of state
Norbert Van den Bergh, John Carminati, Hamid Reza Karimian
We show that shearfree perfect fluids obeying an equation of state p=(gamma -1) mu are non-rotating or non-expanding under the assumption that the spatial divergence of the magneti…
Purely radiative perfect fluids
B. Bastiaensen, H. R. Karimian, N. Van den Bergh +1
We study `purely radiative' (div E = div H = 0) and geodesic perfect fluids with non-constant pressure and show that the Bianchi class A perfect fluids can be uniquely characterize…