Charged particles and quasiperiodic oscillations in Black-bounce-Reissner-Nordström geometry in braneworlds

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F24%3AA0000349" target="_blank" >RIV/47813059:19630/24:A0000349 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2212686424001432?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2212686424001432?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.dark.2024.101561" target="_blank" >10.1016/j.dark.2024.101561</a>

Result language

angličtina

Original language name

Charged particles and quasiperiodic oscillations in Black-bounce-Reissner-Nordström geometry in braneworlds

Original language description

We study the dynamics and oscillations of electrically charged particles along stable circular orbits around a nonrotating electrically charged spacetime. In this work, we consider a regularized Reissner-Nordstr &amp; ouml;m (RN) spacetime under the transformation r (2) -&gt; r( 2) + l( 2) , known as the black-bounce-RN (or Simpson-Visser RN) spacetime, which can represent both a black hole and a wormhole depending on the values of 1 , in the presence of braneworld effects. In our analyses, we introduce a new parameter that shows a similar gravitational effect, which includes electric ( Q ) and tidal charges ( B ) of the spacetime as b = Q( 2) + B . We investigate the horizon properties of the spacetime and estimate the parametric distributions that describe a black hole and a wormhole. Furthermore, we analyze the effective potential of the particles and the critical angular momentum for the cases dominated by the tidal charge b &lt; 0 and the electric charge b &gt; 0 , respectively. Moreover, we apply the epicyclic frequencies in the relativistic precession model to fit twin high-frequency (HF) quasiperiodic oscillations (QPOs) observed in microquasars and active galactic nuclei. Finally, we apply a Monte Carlo Markov Chain (MCMC) simulation to constrain the multidimensional parameter space for the microquasars GRO J1655-40 &amp; GRS 1915-105 and the galactic center, for being a black hole and wormhole candidate using observational data from QPOs. Our findings suggest that the central object of the Milky Way and the microquasars GRS 1915-105 may be a black hole and a wormhole with certain parameters. However, there are no constraints for the microquasar GRO J1655-40 obtained regarding the wormhole case. It implies that the central object fails to be a candidate for being a wormhole in the black-bounce charged spacetimes in the braneworlds model.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/GA23-07043S" target="_blank" >GA23-07043S: Black Hole Magnetosphere</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physics of the Dark Universe

ISSN

2212-6864

e-ISSN

—

Volume of the periodical

46

Issue of the periodical within the volume

December 2024

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

14

Pages from-to

„101561-1“-„101561-14“

UT code for WoS article

001266539200001

EID of the result in the Scopus database

2-s2.0-85197434147