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• W2023505305 endingPage "025008" @default.
• W2023505305 startingPage "025008" @default.
• W2023505305 abstract "We investigate general properties of Kerr–Schild (KS) metrics in n > 4 spacetime dimensions. First, we show that the Weyl tensor is of type II or more special if the null KS vector k is geodetic (or, equivalently, if Tabkakb = 0). We subsequently specialize to vacuum KS solutions, which naturally split into two families of non-expanding and expanding metrics. After demonstrating that non-expanding solutions are equivalent to the known class of vacuum Kundt solutions of Weyl type N, we analyze expanding solutions in detail. We show that they can only be of the type II or D, and we characterize optical properties of the multiple Weyl aligned null direction (WAND) k. In general, k has caustics corresponding to curvature singularities. In addition, it is generically shearing. Nevertheless, we arrive at a possible 'weak' n > 4 extension of the Goldberg–Sachs theorem, limited to the KS class, which matches previous conclusions for general type III/N solutions. In passing, properties of Myers–Perry black holes and black rings related to our results are also briefly discussed." @default.
• W2023505305 created "2016-06-24" @default.
• W2023505305 creator A5002642267 @default.
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• W2023505305 creator A5073243061 @default.
• W2023505305 date "2009-01-06" @default.
• W2023505305 modified "2023-10-10" @default.
• W2023505305 title "Higher dimensional Kerr–Schild spacetimes" @default.
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• W2023505305 doi "https://doi.org/10.1088/0264-9381/26/2/025008" @default.
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