Photon Shells, Black Hole Shadows, and Accretion Toroids

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F24%3AA0000363" target="_blank" >RIV/47813059:19630/24:A0000363 - isvavai.cz</a>

Result on the web

<a href="https://iopscience.iop.org/article/10.3847/1538-4365/ad8645" target="_blank" >https://iopscience.iop.org/article/10.3847/1538-4365/ad8645</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4365/ad8645" target="_blank" >10.3847/1538-4365/ad8645</a>

Result language

angličtina

Original language name

Photon Shells, Black Hole Shadows, and Accretion Toroids

Original language description

We analyze the properties of the Kerr black hole (BH) photon shell, focusing on the influence of aggregates of corotating and counterrotating toroids (ringed accretion disks, hereafter RAD), orbiting in the BH photon shell (photon shell "obscuration"). The particular case of a corotating accretion disk orbiting in the BH ergoregion is also investigated. We study influence on the BH shadow boundary, fixing the conditions under which it is possible to observe the ergoregion and RAD "imprint" on the shadows boundary. In general, remarkable differences appear between the counterrotating photon components of the boundary with respect to the corotating ones. Various regions of the shadow boundary generated from orbital regions linked to the aggregates of orbiting structures have been analyzed. In particular, we investigate the bound unstable spherical photon orbits in the ergoregion, or at the inversion point, where (toroidal) phi=0 , or with the impact parameter &amp; ell; = 0 to characterize the effects of the frame dragging on the boundary. Five main classes of BHs have been identified by distinguishable features of their photon shells (and shadow boundaries) in the context of the orbiting RAD.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Astrophysical Journal Supplement Series

ISSN

0067-0049

e-ISSN

—

Volume of the periodical

275

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

38

Pages from-to

„45-1“-„45-38“

UT code for WoS article

001370907800001

EID of the result in the Scopus database

2-s2.0-85211199882