http://arxiv.org/abs/2210.05322
The analysis of the properties of the X-ray radiation emitted from geometrically thin accretion disks around black holes can be a powerful tool to test General Relativity in the strong field regime. This chapter reviews the state-of-the-art of gravity tests with black hole X-ray data. So far, most efforts have been devoted to test the Kerr hypothesis – namely that the spacetime around astrophysical black holes is described by the Kerr solution – and X-ray data can currently provide among the most stringent constraints on possible deviations from the Kerr geometry. As of now, all X-ray analyses are consistent with the predictions of General Relativity.
C. Bambi
Wed, 12 Oct 22
65/75
Comments: 35 pages, 13 figures. Chapter for the book “Recent Progress on Gravity Tests” (Eds. C. Bambi and A. C\’ardenas-Avenda\~no, Springer Singapore, expected in 2023). It reviews current X-ray constraints on the Kerr hypothesis and discusses the systematic uncertainties
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