X-ray reflection spectroscopy with Kaluza–Klein black holes
Jiachen Zhu, Askar B. Abdikamalov, Dimitry Ayzenberg, Mustapha Azreg-Aïnou, Cosimo Bambi, Mubasher Jamil, Sourabh Nampalliwar, Ashutosh Tripathi, Menglei Zhou
Abstract
Abstract Kaluza–Klein theory is a popular alternative theory of gravity, with both non-rotating and rotating black hole solutions known. This allows for the possibility that the theory could be observationally tested. We present a model which calculates the reflection spectrum of a black hole accretion disk system, where the black hole is described by a rotating solution of the Kaluza–Klein theory. We also use this model to analyze X-ray data from the stella-mass black hole in GRS 1915+105 and provide constraints on the free parameters of the Kaluza–Klein black holes.
Topics & Concepts
PhysicsBlack hole (networking)Reflection (computer programming)Spin-flipRotating black holeMicro black holeBinary black holeStellar black holeHawking radiationSonic black holeExtremal black holeFuzzballCharged black holeIntermediate-mass black holeOpticsAccretion discWhite holeSpectroscopyBlack boxClassical mechanicsComputational physicsSpectrum (functional analysis)Nonsingular black hole modelsTheoretical physicsAstrophysicsBlack braneAccretion (finance)Astrophysical Phenomena and ObservationsRelativity and Gravitational TheoryAstronomy and Astrophysical Research