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Ghost images in Bardeen and ABG spacetimes
We present our study of bending of null geodesics in the regular spacetimes, particularly in Bardeen and Ayon-Beato-Garcia (ABG) no-horizon spacetimes. We show that thanks to “flatness” of these spacetimes in the c...
Astronomy (including astrophysics,space science)
- 2018 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
Generic rotating regular black holes in general relativity coupled to nonlinear electrodynamics
We construct regular rotating black hole and no-horizon spacetimes based on the recently introduced spherically symmetric generic regular black hole spacetimes related interesting new class of the regular ...
Astronomy (including astrophysics,space science)
- 2017 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
The imprints of ghost images in astrophysical phenomena
In the case of no-horizon regular spacetimes there exist a region close to origin where the spacetime is “flattened”. Existence of such a region leads to presence of so called “ghost” images of accretion discs orbiting in t...
Astronomy (including astrophysics,space science)
- 2018 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
Profiled spectral lines generated by Keplerian discs orbiting in the Bardeen and Ayòn-Beato-Garcìa spacetimes
profound in comparison to the regular black hole spacetimes and increase orbiting in Bardeen and Ayon-Beato-Garcia (ABG) black hole and no-horizon spacetimes of the Keplerian discs in the Bardeen and ABG spacetimes
BN - Astronomie a nebeská mechanika, astrofyzika
- 2016 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Quasinormal modes of test fields around regular black holes
, Bardeen, and Ayon-BeatoGarcia regular black hole spacetimes and demonstrate that the test fields are stable in all of these spacetimes. Using the sixth order WKB and the spacetime charge parameters of the reg...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2015 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Circular geodesic of Bardeen and Ayon-Beato-Garcia regular black-hole and no-horizon spacetimes
in the Bardeen and Ayon-Beato-Garcia (ABG) geometry describing spherically symmetric regular black-hole or no-horizon spacetimes. While the Bardeen geometry is not exact solution of Einstein's equations, the ABG spacetime ...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2015 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Embedding diagrams of Bardeen geometry
regular black hole solutions. The best known solution of this kind is described by the Bardeen spacetime with spacetime parameters giving gravitational mass m and magnetic charge g. For ratio g=m large enough, the Bardeen ...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2014 •
- D
Rok uplatnění
D - Stať ve sborníku
Gravitational lensing and ghost images in the regular Bardeen no-horizon spacetimes
We study deflection of light rays and gravitational lensing in the regular Bardeen no-horizon spacetimes. Flatness of these spacetimes in the central region the gravitational field of the no-horizon spacetimes with...
BN - Astronomie a nebeská mechanika, astrofyzika
- 2015 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Relaxations of perturbations of spacetimes in general relativity coupled to nonlinear electrodynamics
Three well-known exact regular solutions of general relativity coupled to nonlinear electrodynamics (NED), namely the Maxwellian, Bardeen, and Hayward regular spacetimes, which can describe either a regular black h...
Astronomy (including astrophysics,space science)
- 2019 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Shadow of the regular Bardeen black holes and comparison of the motion of photons and neutrinos
in the regular spacetimes arising as solutions of the Einstein gravity coupled with a non null geodesics of the background spacetime. We determine shadows of the regular of the background spacetime, but t...
Astronomy (including astrophysics,space science)
- 2019 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
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