J 2021

Epicyclic orbits in the field of Einstein-Dirac-Maxwell traversable wormholes applied to the quasiperiodic oscillations observed in microquasars and active galactic nuclei

STUCHLÍK, Zdeněk and Jaroslav VRBA

Basic information

Original name

Epicyclic orbits in the field of Einstein-Dirac-Maxwell traversable wormholes applied to the quasiperiodic oscillations observed in microquasars and active galactic nuclei

Authors

STUCHLÍK, Zdeněk (203 Czech Republic, belonging to the institution) and Jaroslav VRBA (203 Czech Republic, belonging to the institution)

Edition

European Physical Journal Plus, 2021, 2190-5444

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

Germany

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

RIV identification code

RIV/47813059:19630/21:A0000132

Organization unit

Institute of physics in Opava

UT WoS

000716950300002

Keywords in English

FREQUENCIES;RESONANCE

Tags

Tags

International impact, Reviewed
Změněno: 15/3/2022 08:26, Mgr. Pavlína Jalůvková

Abstract

V originále

We study the epicyclic oscillatory motion around circular orbits of the traversable asymptotically flat and reflection-symmetric wormholes obtained in the Einstein-Dirac-Maxwell theory without applying exotic matter in their construction. We determine frequencies of the orbital and epicyclic motion in the Keplerian disks having inner edge at the marginally stable circular geodesic of the spacetime. The obtained frequencies are applied in the so-called geodesic models of high-frequency quasiperiodic oscillations (HF QPOs) observed in microquasars and active galactic nuclei containing a supermassive central object. We show that even the simplest epicyclic resonance variant of the geodesic models can explain the HF QPOs observed in many active galactic nuclei for realistic choices of the wormhole parameters, but there are some of the sources where only wormholes with unrealistically large values of the parameters can be sufficient for the explanation. On the other hand, in the case of microquasars, the observed HF QPOs strongly restrict the acceptable values of the wormhole parameters.