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Polar quasinormal modes of the scalarized Einstein-Gauss-Bonnet black holes

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arxiv 2006.06006 v1 pith:KO7BPJO3 submitted 2020-06-10 gr-qc

Polar quasinormal modes of the scalarized Einstein-Gauss-Bonnet black holes

Jose Luis Bl\'azquez-Salcedo , Daniela D. Doneva , Sarah Kahlen , Jutta Kunz , Petya Nedkova , Stoytcho S. Yazadjiev This is my paper
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keywords polarmodesquasinormalblackholesscalarizedstableeinstein-gauss-bonnet
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We study the polar quasinormal modes of spontaneously scalarized black holes in Einstein-Gauss-Bonnet theory. In previous works we showed that a set of nodeless solutions of the fundamental branch of the model studied in [1] are stable under both radial [2] and axial perturbations [3]. 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 Gauss-Bonnet theory via the future gravitational wave observations.

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Cited by 4 Pith papers

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  1. Long-lived quasinormal modes, shadows and particle motion in four-dimensional quasi-topological gravity

    gr-qc 2026-03 unverdicted novelty 5.0

    Massive scalar quasinormal modes in quasi-topological black holes become long-lived as scalar mass grows, while photon-sphere radius, shadow size, and ISCO exhibit moderate deviations from Schwarzschild.

  2. Grey-body factors of higher dimensional regular black holes in quasi-topological theories

    gr-qc 2026-01 unverdicted novelty 5.0

    Higher dimensional regular black holes in quasi-topological gravity have suppressed grey-body factors and Hawking radiation compared to singular black holes in general relativity.

  3. Existence of nonlinearly scalarized black holes in Einstein-scalar-Gauss-Bonnet theory with polynomial couplings

    gr-qc 2024-04 unverdicted novelty 5.0

    Nonlinearly scalarized black holes exist in EsGB theory for couplings ζ(φ)=αφ⁴−βφ⁸ and ζ(φ)=αφ⁴−βφ⁶ (but not pure quartic), with instability thresholds for Gaussian pulses and universal probe-limit branches that depen...

  4. Grey-body factors of higher dimensional regular black holes in quasi-topological theories

    gr-qc 2026-01 unverdicted novelty 4.0

    Higher-dimensional regular black holes in quasi-topological gravity exhibit significantly suppressed grey-body factors and Hawking evaporation compared to singular black holes in general relativity.