TURIMOV, Bobur, Yunus TURAEV, Bobomurat AHMEDOV and Zdeněk STUCHLÍK. Circular motion of test particles around wormhole represented by exponential metric. Physics of the Dark Universe. 2022, vol. 35, March 2022, p. "100946-1"-"100946-8", 8 pp. ISSN 2212-6864. Available from: https://dx.doi.org/10.1016/j.dark.2021.100946.
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Basic information
Original name Circular motion of test particles around wormhole represented by exponential metric
Authors TURIMOV, Bobur, Yunus TURAEV, Bobomurat AHMEDOV (860 Uzbekistan) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution).
Edition Physics of the Dark Universe, 2022, 2212-6864.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher Netherlands
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19630/22:A0000220
Organization unit Institute of physics in Opava
Doi http://dx.doi.org/10.1016/j.dark.2021.100946
UT WoS 000745266100003
Keywords in English Papapetrou spacetime; Wormhole solution; Geodesics; Curvature invariant; Gravitational lensing
Tags FÚ, RIV23
Tags International impact, Reviewed
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 26/3/2023 16:12.
Abstract
The motion of photons, neutral and charged particles around wormhole described by exponential metric which is the solution of the Einstein-scalar field equations has been studied. It is also proven that the wormhole solution is a special case of the well-known JNW spacetime and that the scalar field corresponds to the phantom field which has the anti-gravitating repulsive feature. It is also shown that the characteristic radii, namely, innermost stable circular orbit (ISCO), marginally bound orbit (MBO) and photon sphere in the spacetime described by exponential metric are less than that obtained in the Schwarzschild spacetime. However, the size of the shadow of the wormhole is greater than the shadow of the Schwarzschild black hole. The energy efficiency in the spacetime described by exponential metric is relatively large than that in the Schwarzschild spacetime. Later it is assumed that the wormhole is embedded in the asymptotically uniform magnetic field which behaves similar to the dipole-like field near the origin. The dynamical motion of charged particles around the wormhole described by exponential metric implanted in the asymptotically uniform magnetic field has been studied assuming that charged particles are acted by gravitational and Lorentz forces, simultaneously. It is shown that the ISCO position for charged particle will be always less than that of neutral particle.
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