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Quasinormal modes of rapidly rotating Einstein-Gauss-Bonnet-dilaton black holes

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arxiv 2407.20760 v3 pith:AZHQ2BQE submitted 2024-07-30 gr-qc hep-th

Quasinormal modes of rapidly rotating Einstein-Gauss-Bonnet-dilaton black holes

Jose Luis Bl\'azquez-Salcedo , Fech Scen Khoo , Burkhard Kleihaus , Jutta Kunz This is my paper
classification gr-qc hep-th
keywords modesblackholesquasinormalcouplingrapidlyrotatingeinstein-gauss-bonnet-dilaton
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Quasinormal modes of rapidly rotating black holes are crucial in understanding the ringdown phase after a merger. While for Kerr black holes these modes have been known for a long time, their calculation has remained a challenge in alternative theories of gravity. We obtain the spectrum of quasinormal modes of rapidly rotating black holes in Einstein-Gauss-Bonnet-dilaton theory without resorting to perturbation theory in the coupling constant. Our approach is based on a spectral decomposition of the linear perturbations of the metric and the scalar field. The quasinormal modes agree excellently with the perturbatively known slow rotation and weak coupling limits. For large coupling, though, the spectrum changes significantly.

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Cited by 5 Pith papers

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  1. Quasinormal modes of rotating black holes beyond general relativity in the WKB approximation

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    Higher-order WKB accurately computes quasinormal mode frequencies for rotating black holes beyond general relativity, with errors below current GW measurement precision for GW250114.

  2. Constraining deviations from the Teukolsky equation with GW250114

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    GW250114's fundamental ringdown mode bounds theory-agnostic deviations from the Teukolsky equation to be consistent with zero at characteristic scales of 60-100 km.

  3. Confronting eikonal and post-Kerr methods with numerical evolution of scalar field perturbations in spacetimes beyond Kerr

    gr-qc 2026-01 unverdicted novelty 5.0

    Numerical simulations benchmark the eikonal and post-Kerr approximations for quasinormal modes in deformed Kerr spacetimes, quantifying their errors relative to expected observational precision.

  4. Leading effective field theory corrections to the Kerr metric at all spins

    gr-qc 2025-12 unverdicted novelty 5.0

    Numerical solutions show that leading effective-field-theory corrections to the Kerr metric grow with spin and are largest near extremality.

  5. The quasinormal modes of the rotating quantum corrected black holes

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