Effect of nonlinear electrodynamics on polarization distribution around black holes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F25%3AA0000438" target="_blank" >RIV/47813059:19630/25:A0000438 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.aps.org/prd/abstract/10.1103/PhysRevD.111.064084" target="_blank" >https://journals.aps.org/prd/abstract/10.1103/PhysRevD.111.064084</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.111.064084" target="_blank" >10.1103/PhysRevD.111.064084</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of nonlinear electrodynamics on polarization distribution around black holes

Popis výsledku v původním jazyce

We have investigated the polarized images of synchrotron emission from a magnetically charged, spherically symmetric regular Bronnikov black hole (in general relativity coupled to nonlinear electrodynamics) and the singular Reissner-Nordstr &amp; ouml;m black hole (in general relativity coupled to Maxwell electrodynamics). By taking into account the fact that, within the framework of nonlinear electrodynamics, the propagation of the light ray is governed not by the null geodesics of the original spacetime, but rather by the null geodesics associated with the effective metric, we have examined synchrotron radiation characteristics near these black holes at different inclination angles. Our calculations reveal that intensity differences between these two black holes are significant, especially at high values of magnetic charges and large tilt angles. Polarization quantities, such as the electric vector polarization angle and normalized intensity difference (Delta I/I) show similar trends, driven by lensing, Doppler effects, and redshift, offering insights into black hole metrics.

Název v anglickém jazyce

Effect of nonlinear electrodynamics on polarization distribution around black holes

Popis výsledku anglicky

We have investigated the polarized images of synchrotron emission from a magnetically charged, spherically symmetric regular Bronnikov black hole (in general relativity coupled to nonlinear electrodynamics) and the singular Reissner-Nordstr &amp; ouml;m black hole (in general relativity coupled to Maxwell electrodynamics). By taking into account the fact that, within the framework of nonlinear electrodynamics, the propagation of the light ray is governed not by the null geodesics of the original spacetime, but rather by the null geodesics associated with the effective metric, we have examined synchrotron radiation characteristics near these black holes at different inclination angles. Our calculations reveal that intensity differences between these two black holes are significant, especially at high values of magnetic charges and large tilt angles. Polarization quantities, such as the electric vector polarization angle and normalized intensity difference (Delta I/I) show similar trends, driven by lensing, Doppler effects, and redshift, offering insights into black hole metrics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

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

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

111

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

„064084-1“-„064084-11“

Kód UT WoS článku

001460801900016

EID výsledku v databázi Scopus

2-s2.0-105001850192