Sixteenth Marcel Grossmann Meeting

Shadows around at the Galactic Center and at M87* as a tool to test gravity theories

8 Jul 2021, 17:20

20m

Talk in the parallel session Radio Astronomy from Space Radio Astronomy from Space

Speaker

Alexander Zakharov (ITEP, Moscow)

Description

The shadow around the supermassive black hole in M87 was reconstructed in 2019 based on its observations with the Event Horizon Telescope in 2017. Recently polarization map for the M87* shadow was presented. We discuss opportunities to evaluate parameters of alternative theories of gravity with shadow observations, in particular, a tidal charge could be estimated from these observations.