Charles Hellaby is an associate professor of applied mathematics at the University of Cape Town, South Africa. He is a member of the Bahá'í Faith. His research interests include:
Inhomogeneous cosmology. Standard cosmology assumes a smooth homogeneous universe, but the real universe is very lumpyInhomogeneous cosmological models - their evolution, geometry and singularitiesNon-linear structure formation in the universeExtracting the geometry of the cosmos from observationsThe Lemaitre–Tolman cosmological modelThe Szekeres cosmological modelJunction conditions in GRDense black holesLocal inhomogeneities and the Swiss cheese modelHe has also worked on
The models of Vaidya, Schwarzschild–Kruskal–Szekeres & KinnersleyClassical signature changeCosmic stringsGravitational collapse