2013/03/31 by D. Pugliese, Daniela Pugliese, Hernando Quevedo +2 · 1 citation
Mathematics · Physics and Astronomy · #Angular momentum #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Black hole (networking) #Circular orbit #Classical mechanics #Experimental and Theoretical Physics Studies #Geometry #Gravitational singularity #Mass ratio #Mathematics #Naked singularity #Orbital mechanics #Orbital motion #Orbital plane #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Ring singularity #Rotating black hole #Singularity #Spacetime #Test particle #astro-ph.HE #gr-qc
paper · pdf · doi:10.1103/physrevd.88.024042
published as Phys. Rev. D 88, 024042 (2013) · 28 pages, 26 figures, 6 tables. This work follows the papers: DOI:10.1103/PhysRevD.84.044030; DOI:10.1103/PhysRevD.83.104052; DOI:10.1103/PhysRevD.83.024021 This is a revised version to meet the published article
arxiv created 2013/07/13 · openalex publication_date 2013/07/24 · arxiv updated 2013/07/31 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a detailed analysis of the orbital circular motion of electrically neutral test particles on the equatorial plane of the Kerr-Newman spacetime. Many details of the motion in the cases of black hole and naked singularity sources are pointed out. We identify four different types of orbital regions, which depend on the properties of the orbital angular momentum, and define four different kinds of naked singularities, according to the values of the charge-to-mass ratio of the source. It is shown that the presence of a particular type of counterrotating test particle is sufficient to uniquely identify naked singularities. It is pointed out that the structure of the stability regions can be used to differentiate between black holes and naked singularities.