Quasi-spherical light cones of the Kerr geometry

Frans Pretorius, Werner Israel

Research output: Contribution to journalArticlepeer-review

55 Scopus citations


Quasi-spherical light cones are lightlike hypersurfaces of the Kerr geometry that are asymptotic to Minkowski light cones at infinity. We derive the equations of these surfaces and examine their properties In particular, we show that they are free of caustics for all positive values of the Kerr radial coordinate r. Useful applications include the propagation of high-frequency waves, the definition of Kruskal-like coordinates for a spinning black hole and the characteristic initial-value problem.

Original languageEnglish (US)
Pages (from-to)2289-2301
Number of pages13
JournalClassical and Quantum Gravity
Issue number8
StatePublished - Aug 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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