https://doi.org/10.1140/epjc/s10052-020-8198-x
Regular Article - Theoretical Physics
X-ray reflection spectroscopy with Kaluza–Klein black holes
1
Center for Field Theory and Particle Physics, Department of Physics, Fudan University, Shanghai, 200438, China
2
Engineering Faculty, Baskent University, 06790, Ankara, Turkey
3
Institute for Theoretical Physics and Cosmology, Zhejiang University of Technology, Hangzhou, 310023, China
4
Department of Mathematics, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), H-12, Islamabad, 44000, Pakistan
5
Canadian Quantum Research Center, 204-3002, 32 Ave, Vernon, BC V1T 2L7, Canada
6
Theoretical Astrophysics, Eberhard-Karls Universität Tübingen, 72076, Tübingen, Germany
* e-mail: bambi@fudan.edu.cn
Received:
20
April
2020
Accepted:
2
July
2020
Published online:
14
July
2020
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.
© The Author(s), 2020
