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Testing the Kerr black hole hypothesis using X-ray reflection spectroscopy
Cosimo Bambi, Alejandro Cardenas-Avendano, Thomas Dauser +2
We present the first X-ray reflection model for testing the assumption that the metric of astrophysical black holes is described by the Kerr solution. We employ the formalism of th…
Blandford-Znajek mechanism in black holes in alternative theories of gravity
Guancheng Pei, Sourabh Nampalliwar, Cosimo Bambi +1
According to the Blandford-Znajek mechanism, black hole jets are powered by the rotational energy of the compact object. In this work, we consider the possibility that the metric a…
Quasi-periodic oscillations as a tool for testing the Kerr metric: A comparison with gravitational waves and iron line
Cosimo Bambi, Sourabh Nampalliwar
QPOs are a common feature in the X-ray power density spectrum of black hole binaries and a potentially powerful tool to probe the spacetime geometry around these objects. Here we d…