2003/01/21 by Donato Bini, Christian Cherubini, Robert T. Jantzen +1 · 2 citations
Physics and Astronomy · #Angular momentum #Black Holes and Theoretical Physics #Classical field theory #Classical mechanics #Cosmology and Gravitation Theories #Dipole #General relativity #Gravitoelectromagnetism #Magnetic monopole #Massless particle #Mathematical physics #Multipole expansion #Physics #Pulsars and Gravitational Waves Research #Quantum electrodynamics #Quantum mechanics #Spacetime #astro-ph #gr-qc
paper · pdf · doi:10.1103/physrevd.67.084013
published as Phys.Rev. D67 (2003) 084013 · 11 pages RevTeX LaTeX format, no figures
arxiv created 2003/01/21 · openalex publication_date 2003/04/21 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A single master equation is given describing spin s<~2 test fields that are gauge- and tetrad-invariant perturbations of the Kerr-Taub-NUT (Newman-Unti-Tamburino) spacetime representing a source with a mass M, gravitomagnetic monopole moment \ensuremath-l, 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 l 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.