Testing general relativity using X-ray reflection spectroscopy

by Cosimo Bambi (Fudan University, Shanghai, China)

Monday 22 Jul 2019, 15:00 → 17:00 Europe/Rome

Aula Conversi (Dipartimento di Fisica Ed. G. Marconi)

Einstein's theory of general relativity was proposed over 100 years ago and has successfully passed a large number of observational tests in weak gravitational fields. However, the strong field regime is still largely unexplored, and there are many modified and alternative theories that have the same predictions as Einstein's gravity for weak fields and present deviations only when gravity becomes strong. X-ray reflection spectroscopy is potentially a powerful tool for testing the strong gravity region around astrophysical black holes with electromagnetic radiation. In this talk, I will present the reflection model RELXILL_NK designed for testing the metric around black holes and the current