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Quasinormal behavior of the D-dimensional Schwarzshild black hole and higher order WKB approach

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abstract

We study characteristic (quasinormal) modes of a $D$-dimensional Schwarzshild black hole. It proves out that the real parts of the complex quasinormal modes, representing the real oscillation frequencies, are proportional to the product of the number of dimensions and inverse horizon radius $\sim D r_{0}^{-1}$. The asymptotic formula for large multipole number $l$ and arbitrary $D$ is derived. In addition the WKB formula for computing QN modes, developed to the 3rd order beyond the eikonal approximation, is extended to the 6th order here. This gives us an accurate and economic way to compute quasinormal frequencies.

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Quasinormal mode/grey-body factor correspondence for Kerr black holes

gr-qc · 2025-12-29 · conditional · novelty 5.0

WKB analysis of the Teukolsky equation establishes a quasinormal-mode to greybody-factor correspondence for Kerr black holes that holds in the eikonal limit for gravitational perturbations and matches numerics at high angular momentum.

Scattering of electromagnetic field in quasi-topological gravity

gr-qc · 2026-04-28 · unverdicted · novelty 5.0

Regular black holes in quasi-topological gravity produce shifted electromagnetic absorption spectra and modified photon sphere radii relative to singular Tangherlini solutions, with deviations suppressed as spacetime dimensions increase.

The quasinormal modes of the rotating quantum corrected black holes

gr-qc · 2025-10-31 · unverdicted · novelty 4.0

The work calculates scalar quasinormal mode spectra for a rotating quantum-corrected black hole and constructs a methodological pipeline to infer the quantum correction parameter from gravitational-wave ringdown data using informative priors.

Quasinormal modes of massless scalar and electromagnetic perturbations for Euler-Heisenberg black holes surrounded by perfect fluid dark matter

gr-qc · 2026-05-14 · unverdicted · novelty 3.0 · 2 refs

Quasinormal frequencies and greybody factors for massless scalar and electromagnetic perturbations are calculated for charged Euler-Heisenberg black holes surrounded by perfect fluid dark matter, showing that charge Q, nonlinear parameter a, dark matter parameter λ, and angular number l modify the有效

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