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Why not a di-NUT? or Gravitational duality and rotating solutions
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We study how gravitational duality acts on rotating solutions, using the Kerr-NUT black hole as an example. After properly reconsidering how to take into account both electric (i.e. mass-like) and magnetic (i.e. NUT-like) sources in the equations of general relativity, we propose a set of definitions for the dual Lorentz charges. We then show that the Kerr-NUT solution has non-trivial such charges. Further, we clarify in which respect Kerr's source can be seen as a mass M with a dipole of NUT charges.
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Forward citations
Cited by 2 Pith papers
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Gravitational electric-magnetic duality at the light ring and quasinormal mode isospectrality in effective field theories
Gravitational electric-magnetic duality at the light ring organizes and preserves quasinormal mode isospectrality in GR and selects duality-invariant higher-derivative corrections in effective field theories.
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Gravielectric and gravimagnetic fluxes in nutty black holes
Misner strings carry singular gravielectric and gravimagnetic fluxes that connect horizons to infinity, explaining negative Komar masses as incoming field lines and showing the strings are massless empty tubes.
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