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Testing Gravity with Black Hole X-Ray Data

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arxiv 2210.05322 v1 pith:NDETPA4T submitted 2022-10-11 gr-qc astro-ph.HE

Cosimo Bambi This is my paper · ORCID
classification gr-qcastro-ph.HE
keywords x-rayblackdatakerraroundgeneralgravityhole
verification ladder T0 review T1 audit T2 compute T3 formal
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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.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Quasi-normal modes of slowly-rotating Johannsen black holes

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    astro-ph.HE 2024-11 conditional novelty 6.0 of 10

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  3. About the accuracy of the relxill/relxill_nk models in view of the next generation of X-ray missions

    astro-ph.HE 2024-11 conditional novelty 5.0 of 10

    Simulated X-ray observations show that current relxill and relxill_nk models recover black hole parameters but leave residuals that vanish with higher numerical resolution, while full reflection spectra require proper...

  4. A Space Mission to Earth's Nearest Black Hole: Reality or Science Fiction?

    gr-qc 2026-07 conditional novelty 4.0 of 10

    An interstellar nanocraft mission to a nearby black hole is technologically speculative but potentially feasible within decades and could deliver precision strong-field tests of General Relativity.

  5. Physics and Astrophysics of Black Holes with eXTP

    astro-ph.HE 2026-07 accept novelty 2.0 of 10

    eXTP’s larger effective area and simultaneous polarimetry will tighten black-hole spin and Kerr-deviation constraints relative to NICER for the same exposure.

  6. Stellar-Mass Black Holes

    astro-ph.HE 2025-07 conditional novelty 1.0 of 10

    A concise review of stellar-mass black hole physics and observations, plus a speculative interstellar mission concept.

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