Can the observation of the “shadow” allow us to distinguish a black hole from a more exotic
compact object? We study the motion of photons in a class of vacuum static axially …

ABSTRACT The Event Horizon Telescope (EHT) has recently observed the image and
shadow of the supermassive compact object Sagittarius A*(Sgr A*). According to the EHT …

We consider the motion of spinning particles in the field of a well-known vacuum static
axially symmetric spacetime, known as γ metric, that can be interpreted as a generalization …

We consider the electromagnetic field occurring in the background of a static, axially
symmetric vacuum solution of Einstein's field equations immersed in an external magnetic …

We consider the circular motion of test particles in the gravitational field of a static and axially
symmetric compact object described by the q metric. To this end, we calculate orbital …

We consider the properties of a static axially symmetric wormhole described by an exact
solution of Einstein's field equations and investigate how we can distinguish such a …

We investigate a class of three parameter metrics that contain both the γ-metric and Janis-
Newman-Winicour (JNW) metric at special values of the parameters. To see the effect of the …

We consider a well-known static, axially symmetric, vacuum solution of Einstein equations
belonging to Weyl's class and determine the fundamental frequencies of small harmonic …

The γ-metric is a static, axially-symmetric singular solution of the vacuum Einstein's
equations without an event horizon. This is a two-parameter family of solutions, generic …

We study the effects of gravitational lensing on neutrino oscillations in the γ γ-spacetime
which describes a static, axially-symmetric and asymptotically flat solution of the Einstein's …