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Proceeding Paper

Thermal Accretion Disk Spectra Based Tests of General Relativity †

1
Programa de Matemática, Fundación Universitaria Konrad Lorenz, Bogotá 110231, Colombia
2
Department of Physics, eXtreme Gravity Institute, Montana State University, Bozeman, MT 59717, USA
3
Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
Presented at the meeting Recent Progress in Relativistic Astrophysics, Shanghai, China, 6–8 May 2019.
Proceedings 2019, 17(1), 14; https://doi.org/10.3390/proceedings2019017014
Published: 5 November 2019
(This article belongs to the Proceedings of Recent Progress in Relativistic Astrophysics)

Abstract

The continuous X-ray flux of stellar-mass black holes provides an excellent source of data to learn about the astrophysics of accretion disks and about the spacetime itself. The extraction of information, however, depends heavily on our ability to correctly model the astrophysics and the theory of gravity, and the quality of the data. By combining a relativistic ray-tracing and Markov-Chain Monte-Carlo sampling technique, I show that the incorporation of the spin parameter through a slowly-rotating approximation, is not able to break the complex degeneracies of the model and therefore, when introducing modifications beyond general relativity it is very challenging to perform tests of general relativity with this type of observations. As a particular case, I show that it not possible to distinguish the small-coupling, slow-rotation black hole solution of dynamical Chern–Simons gravity from the Kerr solution with current instruments.
Keywords: black holes; accretion disk; thermal spectrum; dynamical Chern-Simons black holes; accretion disk; thermal spectrum; dynamical Chern-Simons

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MDPI and ACS Style

Cárdenas-Avendaño, A. Thermal Accretion Disk Spectra Based Tests of General Relativity. Proceedings 2019, 17, 14. https://doi.org/10.3390/proceedings2019017014

AMA Style

Cárdenas-Avendaño A. Thermal Accretion Disk Spectra Based Tests of General Relativity. Proceedings. 2019; 17(1):14. https://doi.org/10.3390/proceedings2019017014

Chicago/Turabian Style

Cárdenas-Avendaño, Alejandro. 2019. "Thermal Accretion Disk Spectra Based Tests of General Relativity" Proceedings 17, no. 1: 14. https://doi.org/10.3390/proceedings2019017014

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