4 papers
A class of charged and charged-Taub-NUT metrics in the presence of a massless scalar field and some of their astrophysical aspects
Fatemeh Sadeghi, Behrouz Mirza, Marzieh Moradzadeh
We consider a class of exact solutions to the Einstein equations in the presence of a scalar field, recently introduced in [arXiv:2307.09328, arXiv:2307.13588], and derive their ge…
A class of charged-Taub-NUT-scalar metrics via Harison and Ehlers Transformations
Mahnaz Tavakoli Kachi, Behrouz Mirza, Fatemeh Sadeghi
We consider a class of axially symmetric solutions to Einstein's equations incorporating a -dependent scalar field and extend these solutions by introducing electric and magnet…
Modelling the Sgr A and M87 shadows by using the Kerr-Taub-NUT metrics in the presence of a scalar field
khadije Jafarzade, Masoumeh Ghasemi-Nodehi, Fatemeh Sadeghi +1
The recent unveiling of the images of Sgr A* and M87* has significantly advanced our understanding of gravitational physics. In this study, we derive a class of Kerr-Taub-NUT metri…
A class of Taub-NUT-scalar metrics via Ehlers transformations
Ali Derekeh, Behrouz Mirza, Pouya Heidari +2
We derive a class of Taub-NUT metrics in the presence of a scalar field (TNS) by using Ernst equations and potential, as well as using Ehlers transformations on the exact solutions…