Magnetic field geometry in rotating wormhole spacetimes
arXiv:2510.19013 · doi:10.1140/epjc/s10052-025-14919-y
Abstract
If a black hole is immersed in a magnetosphere,its rotational energy can be transferred to the electromagnetic field and escape as a Poynting flux to infinity. This process of extraction of rotational energy is known as the Blandford-Znajek mechanism. It relies on the presence of both a magnetosphere and an ergosphere surrounding the black hole. Previously, we showed that rotating wormholes are also capable of emitting a Poynting flux in the process of accreting magnetized matter. In this work, we re-examine the Blandford-Znajek mechanism in the case of a Kerr-type wormhole. For the first time, we solve the stream equation in a rotating wormhole spacetime and derive analytical expressions for the magnetic field. We then compute the associated Poynting flux. Our results indicate that the electromagnetic flux in the wormhole spacetime is weaker than in the Kerr case, and this difference becomes more pronounced as the geometries of the two spacetimes increasingly deviate.
12 pages, 5 figures
References in corpus (18)
- Electrodynamics of black hole magnetospheres
- Wormholes as Black Hole Foils
- Gravitational Lensing by Rotating Wormholes
- Echoes of Kerr-like wormholes
- Shadows of rotating wormholes
- Observing a wormhole
- Deflection angle of light for an observer and source at finite distance from a rotating wormhole
- Astrophysical Wormholes
- Gravitational lensing by wormholes supported by electromagnetic, scalar, and quantum effects
- Blandford-Znajek mechanism versus Penrose process
- A sensitive search for wormholes
- Higher Order Terms of Kerr Parameter for Blandford-Znajek Monopole Solution
- Blandford--Znajek monopole expansion revisited: novel non-analytic contributions to the power emission
- Epicyclic frequencies in the equatorial plane around stationary and axially symmetric wormhole geometries
- Consistent Blandford-Znajek Expansion
- Blandford-Znajek jets in MOdified Gravity
- Electrostatics in a simple wormhole revisited
- Outgoing electromagnetic flux from rotating wormholes