International audienceWe discuss construction and observational properties of wormholes obtained by connecting two Reissner-Nordström spacetimes with distinct mass and charge parameters. These objects are spherically symmetric, but not reflection symmetric, as the connected spacetimes differ. The reflection-asymmetric wormholes may reflect a significant fraction of the infalling radiation back to the spacetime of its origin. We interpret this effect in a simple framework of the effective photon potential. Depending on the model parameters, image of such a wormhole seen by a distant observer (its “shadow”) may contain a photon ring formed on the observer’s side, photon ring formed on the other side of the wormhole, or both photon rings. Thes...
AbstractWe apply duality rotations and complex transformations to the Schwarzschild metric to obtain...
A large class of flat big bang-big crunch cosmologies with negative cosmological constant are relate...
A spherically symmetric space-time solution for a diffusive two measures theory is studied. An asymm...
We consider reflection-asymmetric thin-shell wormholes within Palatini f(R) gravity using a matching...
Recently, a distinct shadow mechanism was proposed by Wang et al. from the asymmetric thin-shell wor...
We discuss the peculiarities of gravitational lensing by spherically symmetric wormholes if they are...
Horizonless compact objects with light rings (or photon spheres) are becoming increasingly popular i...
The optical properties of a thin-shell wormhole (TSW) with a Hayward profile is investigated. Adopti...
The silhouette of a black hole having a critical curve (an unstable bound photon orbit) when illumin...
International audienceWe apply duality rotations and complex transformations to the Schwarzschild me...
We argue that the appearance of additional light rings in a shadow observation - beyond the infinite...
The silhouette of a black hole having a critical curve (an unstable bound photon orbit) when illumin...
It has been recently argued that in semi-classical gravity, a minimal 2-sphere is not a horizon but ...
The problem of the passage of light through the mouth of a zero-mass wormhole and the possibility of...
AbstractWe apply duality rotations and complex transformations to the Schwarzschild metric to obtain...
A large class of flat big bang-big crunch cosmologies with negative cosmological constant are relate...
A spherically symmetric space-time solution for a diffusive two measures theory is studied. An asymm...
We consider reflection-asymmetric thin-shell wormholes within Palatini f(R) gravity using a matching...
Recently, a distinct shadow mechanism was proposed by Wang et al. from the asymmetric thin-shell wor...
We discuss the peculiarities of gravitational lensing by spherically symmetric wormholes if they are...
Horizonless compact objects with light rings (or photon spheres) are becoming increasingly popular i...
The optical properties of a thin-shell wormhole (TSW) with a Hayward profile is investigated. Adopti...
The silhouette of a black hole having a critical curve (an unstable bound photon orbit) when illumin...
International audienceWe apply duality rotations and complex transformations to the Schwarzschild me...
We argue that the appearance of additional light rings in a shadow observation - beyond the infinite...
The silhouette of a black hole having a critical curve (an unstable bound photon orbit) when illumin...
It has been recently argued that in semi-classical gravity, a minimal 2-sphere is not a horizon but ...
The problem of the passage of light through the mouth of a zero-mass wormhole and the possibility of...
AbstractWe apply duality rotations and complex transformations to the Schwarzschild metric to obtain...
A large class of flat big bang-big crunch cosmologies with negative cosmological constant are relate...
A spherically symmetric space-time solution for a diffusive two measures theory is studied. An asymm...