https://doi.org/10.1140/epjc/s10052-020-08765-3
Regular Article – Theoretical Physics
Spin-induced scalarization of Kerr black holes with a massive scalar field
1
Theoretical Astrophysics, Eberhard Karls University of Tübingen, 72076, Tübingen, Germany
2
INRNE-Bulgarian Academy of Sciences, 1784, Sofia, Bulgaria
3
Department of Theoretical Physics, Faculty of Physics, Sofia University, 1164, Sofia, Bulgaria
4
Institute of Mathematics and Informatics, Bulgarian Academy of Sciences, Acad. G. Bonchev St. 8, 1113, Sofia, Bulgaria
a
daniela.doneva@uni-tuebingen.de
Received:
9
October
2020
Accepted:
11
December
2020
Published online:
29
December
2020
In the present paper we study the onset of the spin-induced scalarization of a Kerr black hole in scalar-Gauss–Bonnet gravity with a massive scalar field. Our approach is based on a time evolution of the relevant linearized scalar field perturbation equation. We examine the region where the Kerr black hole becomes unstable giving rise to new scalarized rotating black holes with a massive scalar field. With increasing of the scalar field mass, the minimum value of the Gauss–Bonnet coupling parameter at which scalarization is possible, increases and thus the instability region shrinks. Interestingly, the introduction of scalar field mass does not change the critical minimal value of the black hole angular momentum
where the instability of the Kerr black hole develops.
© The Author(s) 2020
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3