On the red-shift emission from the black hole horizons replicas

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F25%3AA0000413" target="_blank" >RIV/47813059:19630/25:A0000413 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1140/epjc/s10052-025-14746-1?utm_source=getftr&utm_medium=getftr&utm_campaign=getftr_pilot&getft_integrator=clarivate" target="_blank" >https://link.springer.com/article/10.1140/epjc/s10052-025-14746-1?utm_source=getftr&utm_medium=getftr&utm_campaign=getftr_pilot&getft_integrator=clarivate</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-025-14746-1" target="_blank" >10.1140/epjc/s10052-025-14746-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the red-shift emission from the black hole horizons replicas

Popis výsledku v původním jazyce

We examine the red-shift emission from special orbits (horizons replicas) where photons have the same angular velocity, in magnitude, as those of the Kerr black hole (BH) Killing horizons. We focus on two particular contexts of special significance for their observational implications. A set of these orbits is located in the BH photons shell. Therefore the analysis also connects the red-shifting or blue-shifting from replicas (defined through the BH light surfaces) to the BH shadow boundaries. We then concentrate on the equatorial, general relativistic, axially symmetric accretion disks, orbiting around the central attractor. In the analysis we adopted in particular the Polish doughnut models of geometrically thick toroids, to investigate the signals frequency-shifting from the horizons replica as related to the disks surface, inner edge and accretion flows. The findings map the red-shifting and blue-shifting regions of the signals in dependence to the photons impact parameter, view-angle, angular velocity of the emitter and BH spin. Co-rotating and counter-rotating replica could be identified through the red-shifting or blue-shifting of the emitted signals from the mapped regions.

Název v anglickém jazyce

On the red-shift emission from the black hole horizons replicas

Popis výsledku anglicky

We examine the red-shift emission from special orbits (horizons replicas) where photons have the same angular velocity, in magnitude, as those of the Kerr black hole (BH) Killing horizons. We focus on two particular contexts of special significance for their observational implications. A set of these orbits is located in the BH photons shell. Therefore the analysis also connects the red-shifting or blue-shifting from replicas (defined through the BH light surfaces) to the BH shadow boundaries. We then concentrate on the equatorial, general relativistic, axially symmetric accretion disks, orbiting around the central attractor. In the analysis we adopted in particular the Polish doughnut models of geometrically thick toroids, to investigate the signals frequency-shifting from the horizons replica as related to the disks surface, inner edge and accretion flows. The findings map the red-shifting and blue-shifting regions of the signals in dependence to the photons impact parameter, view-angle, angular velocity of the emitter and BH spin. Co-rotating and counter-rotating replica could be identified through the red-shifting or blue-shifting of the emitted signals from the mapped regions.

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

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Svazek periodika

85

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

25

Strana od-do

„1033-1“-„1033-25“

Kód UT WoS článku

001574789900001

EID výsledku v databázi Scopus

2-s2.0-105016782795