Polar quasinormal modes of the scalarized EinsteinGaussBonnet black holes
Abstract
We study the polar quasinormal modes of spontaneously scalarized black holes in EinsteinGaussBonnet theory. In previous works we showed that a set of nodeless solutions of the fundamental branch of the model studied in [D. D. Doneva and S. S. Yazadjiev, Phys. Rev. Lett. 120, 131103 (2018), 10.1103/PhysRevLett.120.131103] are stable under both radial [J. L. BlazquezSalcedo et al., Phys. Rev. D 98, 084011 (2018), 10.1103/PhysRevD.98.084011] and axial perturbations [J. L. BlazquezSalcedo et al., Phys. Rev. D 101, 104006 (2020), 10.1103/PhysRevD.101.104006]. Here we calculate the polar quasinormal modes and show that this set of solutions is stable against the polar perturbations as well. Thus for a certain region of the parameter space the scalarized black holes are potentially stable physically interesting objects. The spectrum of the polar quasinormal modes differs both quantitatively and qualitatively from the Schwarzschild one which offers the possibility to test the GaussBonnet theory via the future gravitational wave observations.
 Publication:

Physical Review D
 Pub Date:
 July 2020
 DOI:
 10.1103/PhysRevD.102.024086
 arXiv:
 arXiv:2006.06006
 Bibcode:
 2020PhRvD.102b4086B
 Keywords:

 General Relativity and Quantum Cosmology
 EPrint:
 25 pages, 10 figures