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Periodic orbits around a spherically symmetric naked singularity
The motion of time-like test particles in the Fisher/Janis-Newman-Winicour (F/JNW) spacetime is studied with the Hamiltonian formulation of the geodesic equations. The spacetime is characterised by its mass parameter \(r_g\) and scalar field parameter \(\nu\). The innermost bound and stable circular...
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creator | Gulmina Zaman Babar Adil Zaman Babar Lim, Yen-Kheng |
description | The motion of time-like test particles in the Fisher/Janis-Newman-Winicour (F/JNW) spacetime is studied with the Hamiltonian formulation of the geodesic equations. The spacetime is characterised by its mass parameter \(r_g\) and scalar field parameter \(\nu\). The innermost bound and stable circular orbits are calculated and the effective potential is analysed. Consistent with numerical results in earlier literature, for \(\nu |
doi_str_mv | 10.48550/arxiv.1710.09581 |
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The spacetime is characterised by its mass parameter \(r_g\) and scalar field parameter \(\nu\). The innermost bound and stable circular orbits are calculated and the effective potential is analysed. Consistent with numerical results in earlier literature, for \(\nu<1/2\), particles with non-zero angular momentum encounter an infinite potential barrier, preventing them from reaching the naked singularity at \(r=r_g\). Periodic orbits in the spacetime are also obtained. Compared to the periodic orbits around the Schwarzschild black hole, it is found that typically lower energies are required for the same orbits in the F/JNW spacetime.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1710.09581</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Angular momentum ; Circular orbits ; Parameters ; Potential barriers ; Spacetime</subject><ispartof>arXiv.org, 2017-10</ispartof><rights>2017. 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subjects | Angular momentum Circular orbits Parameters Potential barriers Spacetime |
title | Periodic orbits around a spherically symmetric naked singularity |
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