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  Geodesic models of quasi-periodic-oscillations as probes of quadratic gravity

Maselli, A., Pani, P., Cotesta, R., Gualtieri, L., Ferrari, V., & Stella, L. (2017). Geodesic models of quasi-periodic-oscillations as probes of quadratic gravity. Astrophysical Journal, 843(1): 25. doi:10.3847/1538-4357/aa72e2.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-AC01-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-F72F-4
Genre: Journal Article

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 Creators:
Maselli, Andrea, Author
Pani, Paolo, Author
Cotesta, Roberto1, Author
Gualtieri, Leonardo, Author
Ferrari, Valeria, Author
Stella, Luigi, Author
Affiliations:
1AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_24008              

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Free keywords: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE,General Relativity and Quantum Cosmology, gr-qc
 Abstract: Future very-large-area X-ray instruments (for which the effective area is larger than $>3$m$^2$) will be able to measure the frequencies of quasi-periodic oscillations~(QPOs) observed in the X-ray flux from accreting compact objects with sub-percent precision. If correctly modeled, QPOs can provide a novel way to test the strong-field regime of gravity. By using the relativistic precession model and a modified version of the epicyclic resonance model, we develop a method to test general relativity against a generic class of theories with quadratic curvature corrections. With the instrumentation being studied for future missions such as eXTP, LOFT, or STROBE-X, a measurement of at least two QPO triplets from a stellar mass black hole can set stringent constraints on the coupling parameters of quadratic gravity.

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 Dates: 2017-03-042017-06-272017
 Publication Status: Published in print
 Pages: Minor changes to match the version published on ApJ
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1703.01472
DOI: 10.3847/1538-4357/aa72e2
URI: http://arxiv.org/abs/1703.01472
 Degree: -

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Title: Astrophysical Journal
Source Genre: Journal
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Publ. Info: Chicago, IL : University of Chicago Press for the American Astronomical Society
Pages: - Volume / Issue: 843 (1) Sequence Number: 25 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_2