Collisions and circular motion of spinning magnetized particles orbiting magnetized Kerr black holes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F25%3AA0000475" target="_blank" >RIV/47813059:19630/25:A0000475 - isvavai.cz</a>

Výsledek na webu

<a href="https://harvest.aps.org/v2/journals/articles/10.1103/bl45-hbjm/fulltext?utm_source=clarivate&getft_integrator=clarivate" target="_blank" >https://harvest.aps.org/v2/journals/articles/10.1103/bl45-hbjm/fulltext?utm_source=clarivate&getft_integrator=clarivate</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/bl45-hbjm" target="_blank" >10.1103/bl45-hbjm</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Collisions and circular motion of spinning magnetized particles orbiting magnetized Kerr black holes

Popis výsledku v původním jazyce

Studying spinning magnetized particles in strong gravitational and electromagnetic fields is crucial for understanding astrophysical processes near black holes, particularly in the scenarios of millisecond pulsars orbiting supermassive or intermediate-mass black holes. In this work, we analyze the circular motion and collisions of such particles in the close environment of a magnetized Kerr black hole, considering both spincurvature and magnetic dipole interactions. Using the Mathisson-Papapetrou-Dixon (MPD) equations, we derive the effective potential governing the circular motion of spinning magnetized particles and investigate the innermost stable circular orbit (ISCO) under the influence of black hole spin, external magnetic fields, and intrinsic particle spin and magnetic dipole moment. The results reveal how the interaction of the magnetic dipole moment with the external field and spin-curvature interactions significantly alter stable orbits, leading to modifications in accretion dynamics. Furthermore, we explore the center-of-mass energy of such high-energy particle collisions, demonstrating that spin and magnetic interactions can amplify collision energies beyond the standard Ba &amp; ntilde;ados-Silk-West (BSW) process, with implications for the production of ultrahigh-energy cosmic rays and the formation of jets in active galactic nuclei and lowluminosity galaxies. Our findings may provide theoretical predictions that can be tested using observations of compact objects in strong magnetic fields, such as pulsars near supermassive black holes.

Název v anglickém jazyce

Collisions and circular motion of spinning magnetized particles orbiting magnetized Kerr black holes

Popis výsledku anglicky

Studying spinning magnetized particles in strong gravitational and electromagnetic fields is crucial for understanding astrophysical processes near black holes, particularly in the scenarios of millisecond pulsars orbiting supermassive or intermediate-mass black holes. In this work, we analyze the circular motion and collisions of such particles in the close environment of a magnetized Kerr black hole, considering both spincurvature and magnetic dipole interactions. Using the Mathisson-Papapetrou-Dixon (MPD) equations, we derive the effective potential governing the circular motion of spinning magnetized particles and investigate the innermost stable circular orbit (ISCO) under the influence of black hole spin, external magnetic fields, and intrinsic particle spin and magnetic dipole moment. The results reveal how the interaction of the magnetic dipole moment with the external field and spin-curvature interactions significantly alter stable orbits, leading to modifications in accretion dynamics. Furthermore, we explore the center-of-mass energy of such high-energy particle collisions, demonstrating that spin and magnetic interactions can amplify collision energies beyond the standard Ba &amp; ntilde;ados-Silk-West (BSW) process, with implications for the production of ultrahigh-energy cosmic rays and the formation of jets in active galactic nuclei and lowluminosity galaxies. Our findings may provide theoretical predictions that can be tested using observations of compact objects in strong magnetic fields, such as pulsars near supermassive black holes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

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

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

112

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

19

Strana od-do

„044068-1“-„044068-19“

Kód UT WoS článku

001562704100007

EID výsledku v databázi Scopus

2-s2.0-105021596120