J 2022

Circular motion of test particles around wormhole represented by exponential metric

TURIMOV, Bobur, Yunus TURAEV, Bobomurat AHMEDOV a Zdeněk STUCHLÍK

Základní údaje

Originální název

Circular motion of test particles around wormhole represented by exponential metric

Autoři

TURIMOV, Bobur, Yunus TURAEV, Bobomurat AHMEDOV (860 Uzbekistán) a Zdeněk STUCHLÍK (203 Česká republika, domácí)

Vydání

Physics of the Dark Universe, 2022, 2212-6864

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Kód RIV

RIV/47813059:19630/22:A0000220

Organizační jednotka

Fyzikální ústav v Opavě

DOI

http://dx.doi.org/10.1016/j.dark.2021.100946

UT WoS

000745266100003

Klíčová slova anglicky

Papapetrou spacetime; Wormhole solution; Geodesics; Curvature invariant; Gravitational lensing

Štítky

, RIV23

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 26. 3. 2023 16:12, Mgr. Pavlína Jalůvková

Anotace

V originále

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.
Zobrazeno: 25. 12. 2024 09:47