2011/03/31 by D. Pugliese, H. Quevedo, R. Ruffini · 1 citation
Physics and Astronomy · #gr-qc #astro-ph.HE
paper · pdf · doi:10.1103/physrevd.83.104052
published as Phys.Rev.D83:104052,2011 · 58 pages, 41 figures. To be published in Phys. Rev. D. This work follows the paper "Circular motion of neutral test particles in Reissner-Nordstróm spacetime" published in Phys.\ Rev.\ D \ Vol.83, No.2 with DOI: 10.1103/PhysRevD.83.024021 (arXiv:1012.5411v1 [astro-ph.HE])
arxiv created 2011/04/23 · arxiv updated 2015/03/18
We investigate the circular motion of charged test particles in the gravitational field of a charged mass described by the Reissner-Nordström (RN) spacetime. We study in detail all the spatial regions where circular motion is allowed around either black holes or naked singularities. The effects of repulsive gravity are discussed by finding all the circles at which a particle can have vanishing angular momentum. We show that the geometric structure of stable accretion disks, made of only test particles moving along circular orbits around the central body, allows us to clearly distinguish between black holes and naked singularities.