19-23 October 2020
Europe/Prague timezone
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Influence of tidal force and magnetic field generated by surrounded toroidal structure onto the black hole shadow

21 Oct 2020, 16:25
Online talk Shapes of Black Holes


Dmitriy Ovchinnikov (Silesian University in Opava)


We consider a simple model of a black hole surrounded by a toroidal structure and experiencing deformation due to magnetic field and the tidal force. For this system we construct the shadows of Preston-Poisson black hole, apply it to supermassive black hole M87∗ and compare it with the shadows of corresponding Schwarzschild and Kerr black holes. We find that for large deviation parameters related with magnetic field and the tidal force the shadow of Preston-Poisson black hole is clearly distinguishable from Kerr and Schwarzschild black holes provided the angular resolution of measurements is of order µarcsec.

Primary author

Dmitriy Ovchinnikov (Silesian University in Opava)

Presentation Materials