We obtained analytical expression for shadows around supermassive black holes for a wide class of spherically symmetric black hole solutions, such a Reissner - Nordstrom with a tidal charge, dyonic Reissner - Nordstrom - (anti) de-Sitter, black hole in Horndeski gravity. Therefore, observations of such shadows could be indicator of an alternative theory of gravity. We also found properties of shadows around Kerr black holes. which could be observed in the future with the Event Horizon Telescope and projected space-ground interferometer Millimetron.
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018