k 2021

Epicyclic Oscillations around Simpson--Visser Regular Black Holes and Wormholes

VRBA, Jaroslav and Zdeněk STUCHLÍK

Basic information

Original name

Epicyclic Oscillations around Simpson--Visser Regular Black Holes and Wormholes

Edition

RAGtime 23: 6-10 September, 2021 - Workshop on Black Holes and Neutron Stars, 2021

Other information

Language

English

Type of outcome

Prezentace na konferencích

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Organization unit

Institute of physics in Opava

Tags

International impact
Změněno: 14/11/2021 20:49, Ing. Petra Ryšavá

Abstract

V originále

We study epicyclic oscillatory motion along circular geodesics of the Simpson--Visser meta-geometry 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.