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Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A
Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …
unprecedented window onto tests of gravity and fundamental physics in the strong-field …
Charged black hole in 4D Einstein-Gauss-Bonnet gravity: particle motion, plasma effect on weak gravitational lensing and centre-of-mass energy
We study the motion of charged and spinning particles and photons in the 4D charged
Einstein-Gauss-Bonnet (EGB) black hole vicinity. We determine the radius of the innermost …
Einstein-Gauss-Bonnet (EGB) black hole vicinity. We determine the radius of the innermost …
Testing alternative spacetimes by high-frequency quasi-periodic oscillations observed in microquasars and active galactic nuclei
In this article, we try to capture the influence of deviation from standard Kerr black hole (BH)
spacetime on observed high-frequency quasi-periodic oscillations (QPOs) signal. We …
spacetime on observed high-frequency quasi-periodic oscillations (QPOs) signal. We …
Testing alternative theories of gravity by fitting the hot-spot data of Sgr A
We are fitting dynamics of electrically neutral hot-spot orbiting around Sagittarius A*(Sgr A*)
source in Galactic center, represented by various modifications of the standard Kerr black …
source in Galactic center, represented by various modifications of the standard Kerr black …
Motion of charged and spinning particles influenced by dark matter field surrounding a charged dyonic black hole
We investigate the motion of massive charged and spinning test particles around a charged
dyonic black hole surrounded by perfect fluid scalar dark matter field. We obtain the …
dyonic black hole surrounded by perfect fluid scalar dark matter field. We obtain the …
Massless polarized particle and Faraday rotation of light in the Schwarzschild spacetime
AA Deriglazov - Physical Review D, 2021 - APS
We present the manifestly covariant Lagrangian of a massless polarized particle that implies
all dynamic and algebraic equations as the conditions of extreme of this variational problem …
all dynamic and algebraic equations as the conditions of extreme of this variational problem …
Motion of spinning particles around black holes
JM Ladino, CA del Valle, E Larrañaga - ar** conditions
The possibility that rotating black holes could be natural particle accelerators has been
subject of intense debate. While it appears that for extremal Kerr black holes arbitrarily high …
subject of intense debate. While it appears that for extremal Kerr black holes arbitrarily high …
Chaotic motion and Periastron precession of spinning test particles moving in the vicinage of a Schwarzschild black hole surrounded by a quintessence matter field
In the present work, our main objective is to investigate the orbits of spinning test particles
around a Schwarzschild black hole under the influence of a quintessence matter field …
around a Schwarzschild black hole under the influence of a quintessence matter field …
[HTML][HTML] An angular rainbow of light from curved spacetime
AA Deriglazov - Physics Letters A, 2022 - Elsevier
We try to go beyond the geometrical optics approximation, by showing that a massless
polarized particle allows a wide class of non minimal interactions with an arbitrary …
polarized particle allows a wide class of non minimal interactions with an arbitrary …