Resonance crossing of a charged body in a magnetized Kerr background: An analog of extreme mass ratio inspiral

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00572370" target="_blank" >RIV/67985815:_____/23:00572370 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24510/23:00011955

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevD.107.064005" target="_blank" >https://doi.org/10.1103/PhysRevD.107.064005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.107.064005" target="_blank" >10.1103/PhysRevD.107.064005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Resonance crossing of a charged body in a magnetized Kerr background: An analog of extreme mass ratio inspiral

Popis výsledku v původním jazyce

We investigate resonance crossings of a charged body moving around a Kerr black hole immersed in an external homogeneous magnetic field. This system can serve as an electromagnetic analog of a weakly nonintegrable extreme mass ratio inspiral (EMRI). In particular, the presence of the magnetic field renders the conservative part of the system nonintegrable in the Liouville sense, while the electromagnetic selfforce causes the charged body to inspiral. By studying the system without the self-force, we show the existence of an approximate Carter-like constant and discuss how resonances grow as a function of the perturbation parameter. Then, we apply the electromagnetic self-force to investigate crossings of these resonances during an inspiral. Averaging the energy and angular momentum losses during crossings allows us to employ an adiabatic approximation for them. We demonstrate that such adiabatic approximation provides results qualitatively equivalent to the instantaneous self-force evolution, which indicates that the adiabatic approximation may describe the resonance crossing with sufficiently accuracy in EMRIs.

Název v anglickém jazyce

Resonance crossing of a charged body in a magnetized Kerr background: An analog of extreme mass ratio inspiral

Popis výsledku anglicky

We investigate resonance crossings of a charged body moving around a Kerr black hole immersed in an external homogeneous magnetic field. This system can serve as an electromagnetic analog of a weakly nonintegrable extreme mass ratio inspiral (EMRI). In particular, the presence of the magnetic field renders the conservative part of the system nonintegrable in the Liouville sense, while the electromagnetic selfforce causes the charged body to inspiral. By studying the system without the self-force, we show the existence of an approximate Carter-like constant and discuss how resonances grow as a function of the perturbation parameter. Then, we apply the electromagnetic self-force to investigate crossings of these resonances during an inspiral. Averaging the energy and angular momentum losses during crossings allows us to employ an adiabatic approximation for them. We demonstrate that such adiabatic approximation provides results qualitatively equivalent to the instantaneous self-force evolution, which indicates that the adiabatic approximation may describe the resonance crossing with sufficiently accuracy in EMRIs.

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

2023

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

107

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

064005

Kód UT WoS článku

000982448700004

EID výsledku v databázi Scopus

2-s2.0-85150873434