Spinning particle motion around charged black hole from T-duality

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F25%3AA0000470" target="_blank" >RIV/47813059:19630/25:A0000470 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S057790732400337X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S057790732400337X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cjph.2024.08.036" target="_blank" >10.1016/j.cjph.2024.08.036</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spinning particle motion around charged black hole from T-duality

Popis výsledku v původním jazyce

This study examines a spinning particle motion around a charged black hole from T-duality. Initially, our investigation focuses on the lapse function of the metric, revealing that the presence of the black hole's charge solely induces a shift in the location of the black hole's horizon. However, with the introduction of l0, we observe the emergence of the second Cauchy horizon (r-). Additionally, we determine the maximum values of black hole parameters within the T-duality framework, guided by the criterion for the existence of the black hole horizon. We employ the Mathisson-Papapetrous-Dixon (MPD) equation to analyze the dynamics of the spinning test particles. Our exploration delves into the influence of the particle's spin and associated parameters Q and l0 on the effective potential. Subsequently, we investigate the innermost stable circular orbit (ISCO) to establish relationships between the particle's energy, angular momentum at ISCO, ISCO radius, and the particle's spin, along with black hole parameters from T-duality. We also focus on superluminal motion, a crucial characteristic distinguishing time-like particles from space-like ones. Numerical values for the particle's critical spin (smax) necessary to maintain time-like behavior are determined. Finally, we address the collision of spinning particles in the proximity of a compact object. Within this context, we endeavor to identify critical values of the particle's angular momentum, permitting particles to approach the compact object closely.

Název v anglickém jazyce

Spinning particle motion around charged black hole from T-duality

Popis výsledku anglicky

This study examines a spinning particle motion around a charged black hole from T-duality. Initially, our investigation focuses on the lapse function of the metric, revealing that the presence of the black hole's charge solely induces a shift in the location of the black hole's horizon. However, with the introduction of l0, we observe the emergence of the second Cauchy horizon (r-). Additionally, we determine the maximum values of black hole parameters within the T-duality framework, guided by the criterion for the existence of the black hole horizon. We employ the Mathisson-Papapetrous-Dixon (MPD) equation to analyze the dynamics of the spinning test particles. Our exploration delves into the influence of the particle's spin and associated parameters Q and l0 on the effective potential. Subsequently, we investigate the innermost stable circular orbit (ISCO) to establish relationships between the particle's energy, angular momentum at ISCO, ISCO radius, and the particle's spin, along with black hole parameters from T-duality. We also focus on superluminal motion, a crucial characteristic distinguishing time-like particles from space-like ones. Numerical values for the particle's critical spin (smax) necessary to maintain time-like behavior are determined. Finally, we address the collision of spinning particles in the proximity of a compact object. Within this context, we endeavor to identify critical values of the particle's angular momentum, permitting particles to approach the compact object closely.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GA23-07043S" target="_blank" >GA23-07043S: Magnetosféra černých děr</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

CHINESE JOURNAL OF PHYSICS

ISSN

0577-9073

e-ISSN

—

Svazek periodika

94

Číslo periodika v rámci svazku

April 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

66-78

Kód UT WoS článku

001420479200001

EID výsledku v databázi Scopus

2-s2.0-85216100273