Journal
PHYSICAL REVIEW D
Volume 106, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.106.063009
Keywords
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Funding
- Alexander von Humboldt Foundation
- Deutscher Akademischer Austauschdienst
- High Performance and Cloud Computing Group at the Zentrum fur Datenverarbeitung of the University of Tubingen
- state of Baden-Wuerttemberg through bwHPC
- German Research Foundation (DFG) [INST 37/935-1 FUGG]
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This paper presents the extension of general relativistic magnetohydrodynamic simulations to parametrically deformed black holes, allowing for a better understanding of the disk structure, stability, and radiative efficiency. Fe K alpha profiles are computed and future outlook is discussed.
Black hole based tests of general relativity have proliferated in recent times with new and improved detectors and telescopes. Modeling of the black hole neighborhood, where most of the radiation carrying strong-field signature originates, is of utmost importance for robust and accurate constraints on possible violations of general relativity. As a first step, this paper presents the extension of general relativistic magnetohydrodynamic simulations of thin accretion disks to parametrically deformed black holes that generalize the Kerr solution. The extension is based on HARMPI, a publicly available member of the HARM family of codes, and uses a phenomenological metric to study parametric deviations away from Kerr. The extended model is used to study the disk structure, stability, and radiative efficiency. We also compute the Fe K alpha profiles in simplified scenarios and present an outlook for the future.
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