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arXiv · 2209.00160

Circular orbits of test particles interacting with massless linear scalar field of the naked singularity

O. S. Stashko·V. I. Zhdanov
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Abstract

We study effects of the particles coupling with scalar field (SF) on the distribution of stable circular orbits (SCO) around the naked singularity described by the well-known Fisher-Janis-Newman-Winicour solution. The power-law and exponential models of the particle--SF interaction are analyzed. The focus is on the non-connected SCO distributions. We show that coupling between particles and SF can essentially complicate the topology of the SCO distributions. In particular, it can lead to new non-overlapping SCO regions, which are separated by unstable orbits and/or by regions where the circular orbits do not exist.

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O. S. Stashko, V. I. Zhdanov. 2022-10-21. Circular orbits of test particles interacting with massless linear scalar field of the naked singularity. https://doi.org/10.1103/physrevd.106.104049(2022)

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