Motion of charged test particles in Reissner--Nordström spacetime

Details Motion of charged test particles in Reissner--Nordström spacetime Motion of charged test particles in Reissner--Nordström spacetime

2011-03-07

arxiv.org/abs/1103.1807v3

Phys.Rev.D83:104052,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

58 pages, 41 figures. To be published in Phys. Rev. D. This work follows the paper "Circular motion of neutral test particles

Scientific paper

10.1103/PhysRevD.83.104052

We investigate the circular motion of charged test particles in the gravitational field of a charged mass described by the Reissner-Nordstr\"om (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.

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