2 papers
gr-qc2020
Shadows from spinning black holes in extended gravity
S. O. Alexeyev, V. A. Prokopov
When the the shadow image of a supermassive black hole in the center of M87 was obtained a new era in the observational astrophysics began. The resolution improvement would allow t…
gr-qc2018
Phenomenological Extension for Tidal Charge Black Hole
S. O. Alexeyev, B. N. Latosh, V. A. Prokopov +1
A simple phenomenological extension of the black hole solution with tidal charge is proposed. Empirical data on the Sgr A* is consistent with the suggested metric which serves as a…