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Massless field perturbations and gravitomagnetism in the Kerr-Taub-NUT spacetime

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arxiv gr-qc/0301080 v1 pith:5T4LOBYL submitted 2003-01-21 gr-qc astro-ph

Donato Bini , Christian Cherubini , Robert T. Jantzen , Bahram Mashhoon This is my paper · ORCID
classification gr-qcastro-ph
keywords angularequationgravitomagneticmomentspacetimefieldkerr-taub-nutmass
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abstract

A single master equation is given describing spin $s\le2$ test fields that are gauge- and tetrad-invariant perturbations of the Kerr-Taub-NUT spacetime representing a source with mass $M$, gravitomagnetic monopole moment $-\ell$ and gravitomagnetic dipole moment (angular momentum) per unit mass $a$. This equation can be separated into its radial and angular parts. The behavior of the radial functions at infinity and near the horizon is studied and used to examine the influence of $\ell$ on the phenomenon of superradiance, while the angular equation leads to spin-weighted spheroidal harmonic solutions generalizing those of the Kerr spacetime. Finally the coupling between the spin of the perturbing field and the gravitomagnetic monopole moment is discussed.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Graviton scattering on self-dual black holes

    hep-th 2025-07 unverdicted novelty 8.0 of 10

    Exact tree-level MHV graviton scattering amplitudes at arbitrary multiplicity are obtained on self-dual Taub-NUT backgrounds using twistor theory, including spin via Newman-Janis shift, with undeformed celestial symmetries.

  2. An Exact Black Hole Scattering Amplitude

    hep-th 2024-12 conditional novelty 6.0 of 10

    For the self-dual black hole (NUT charge equal to mass), perihelion precession vanishes to all orders in G, and the exact quantum amplitude is the Fourier transform of the exponentiated classical eikonal phase.

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