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Testing the space-time geometry around black hole candidates with the available radio and X-ray data
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Astrophysical black hole candidates are thought to be the Kerr black holes predicted by General Relativity, but the actual nature of these objects has still to be proven. The Kerr black hole hypothesis can be tested by observing strong gravity features and check if they are in agreement with the predictions of General Relativity. In particular, the study of the properties of the electromagnetic radiation emitted by the gas of the accretion disk can provide information on the geometry of the space-time around these objects and constrain possible deviations from the Kerr background.
Forward citations
Cited by 2 Pith papers
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Observational properties of regular black holes in Asymptotic Safety
As the asymptotic-safety parameter ξ grows, the shadow shrinks, the innermost orbit moves inward, and the accretion disk becomes brighter and more efficient than in Schwarzschild.
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Observational constraints on the Kerr and its several single-parameter modified spacetimes using quasi-periodic oscillation data
Using quasi-periodic oscillation data under the relativistic precession model, the paper reports 68% constraints on nine modified Kerr spacetimes, with only Kerr-Newman keeping a Kerr-compatible parameter range.
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