Epicyclic Oscillations around Simpson-Visser Regular Black Holes and Wormholes

We study epicyclic oscillatory motion along circular geodesics of the Simpson-Visser metageometry describing in a unique way regular black-bounce black holes and reflection-symmetric wormholes by using a length parameter l. We give the frequencies of the orbital and epicyclic motion in a Keplerian disc with inner edge at the innermost circular geodesic located above the black hole outer horizon or on the our side of the wormhole. We use these frequencies in the epicyclic resonance version of the so-called geodesic models of high-frequency quasi-periodic oscillations (HF QPOs) observed in microquasars and around supermassive black holes in active galactic nuclei to test the ability of this meta-geometry to improve the fitting of HF QPOs observational data from the surrounding of supermassive black holes. We demonstrate that this is really possible for wormholes with sufficiently high length parameter l.

Automated summary

The study explores oscillatory motion in regular black-bounce black holes and reflection-symmetric wormholes using a length parameter l. The frequencies of orbital and epicyclic motion in a Keplerian disc are provided, and used to test the ability of this meta-geometry to improve fitting of HF QPOs observational data. It is demonstrated that this improvement is achievable for wormholes with a sufficiently high length parameter l.