Testing General Relativity with Black Hole X-ray Data
Cosimo Bambi
TL;DR
This paper reviews efforts to test Einstein's General Relativity in the strong gravitational field near black holes using X-ray data from multiple space observatories.
Contribution
It summarizes recent observational approaches and data analysis techniques for probing strong gravity effects around black holes.
Findings
Black hole X-ray data can test predictions of General Relativity in strong fields.
Current observations are consistent with Einstein's theory but have limited precision.
Future X-ray missions could provide more definitive tests.
Abstract
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. On the contrary, the strong field regime is still largely unexplored. Astrophysical black holes are ideal laboratories for testing gravity in the strong field regime. Here I will briefly review the current efforts of my group to test the strong gravitational field around black holes using X-ray data from NuSTAR, RXTE, Suzaku, and XMM-Newton.
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