Abstract
Quasi-black holes are objects having some of the properties of black holes but which have no horizon and are non-singular. Up till now those found have been spherical. I give solutions of the Einstein–Maxwell equations representing spheroidal quasi-black holes, made of electrically counterpoised dust. They contain a parameter a which governs the external gravitational and electrical fields of the spheroid: as a tends to zero those fields become spherical in spite of the spheroidal character of the source.
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Bonnor, W.B. Non-spherical quasi-black holes. Gen Relativ Gravit 42, 1825–1830 (2010). https://doi.org/10.1007/s10714-010-0950-3
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DOI: https://doi.org/10.1007/s10714-010-0950-3