Shadow of charged wormholes in EinsteinMaxwelldilaton theory
Abstract
The study of shadow is quite prominent nowadays because of the ongoing Event Horizon Telescope observations. We construct the shadow images of charged wormholes in EinsteinMaxwelldilaton (EMD) theory. The spacetime metric of the charged wormholes contains three charges: magnetic charge P, electric charge Q, and dilaton charge Σ. We evaluate the photon geodesics around the charged wormholes. We also calculate the effective potential and discuss its behavior with angular momentum L and different values of charges P, Q, and Σ. A study of the shadow of charged wormholes reveals that the shadow has an effect of the charges P and Q. The radius of the shadow increases with the magnetic charge P as well as the electric charge Q. We also find that the dilaton charge does not affect the shadow of the charged wormholes.
 Publication:

Annals of Physics
 Pub Date:
 January 2019
 DOI:
 10.1016/j.aop.2018.11.004
 arXiv:
 arXiv:1805.12435
 Bibcode:
 2019AnPhy.400..198A
 Keywords:

 Wormholes;
 EinsteinMaxwelldilaton theory;
 Shadow;
 General Relativity and Quantum Cosmology
 EPrint:
 8 pages, 4 figures