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Shadow of the rotating black hole with quintessential energy in the presence of the plasma
Ahmadjon Abdujabbarov, Bobir Toshmatov, Zdeněk Stuchlík +1
We study the shadow of the rotating black hole with quintessential energy i) in vacuum and ii) in the presence of plasma with radial power-law density. For vacuum case the quintess…
Optical properties of black hole in the presence of plasma: shadow
Farruh Atamurotov, Bobomurat Ahmedov, Ahmadjon Abdujabbarov
We have studied photon motion around axially symmetric rotating Kerr black hole in the presence of plasma with radial power-law density. It is shown that in the presence of plasma…
Energetics and optical properties of -dimensional rotating black hole in pure Gauss-Bonnet gravity
Ahmadjon Abdujabbarov, Farruh Atamurotov, Naresh Dadhich +2
We study physical processes around a rotating black hole in pure Gauss-Bonnet (GB) gravity. In pure GB gravity, gravitational potential has slower fall off as compared to the corre…
Quasinormal modes of test fields around regular black holes
Bobir Toshmatov, Ahmadjon Abdujabbarov, Zdeněk Stuchlík +1
We study scalar, electromagnetic and gravitational test fields in the Hayward, Bardeen and Ayón-Beato-García regular black hole spacetimes and demonstrate that the test fields are…
A coordinate-independent characterization of a black hole shadow
A. A. Abdujabbarov, L. Rezzolla, B. J. Ahmedov
A large international effort is under way to assess the presence of a shadow in the radio emission from the compact source at the centre of our Galaxy, Sagittarius A (Sgr A…