Photon Shells, Black Hole Shadows, and Accretion Toroids

J 2024

Photon Shells, Black Hole Shadows, and Accretion Toroids

PUGLIESE, Daniela and Zdeněk STUCHLÍK

Basic information

Original name

Photon Shells, Black Hole Shadows, and Accretion Toroids

Authors

PUGLIESE, Daniela (380 Italy, belonging to the institution) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution)

Edition

Astrophysical Journal Supplement Series, GB - Spojené království Velké Británie a, 2024, 0067-0049

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10308 Astronomy

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 8.500

RIV identification code

RIV/47813059:19630/24:A0000363

Organization unit

Institute of physics in Opava

DOI

https://doi.org/10.3847/1538-4365/ad8645

UT WoS

001370907800001

EID Scopus

2-s2.0-85211199882

Keywords in English

M87 event horizon; results VII polarization;observational signatures;energy extraction;kerr;images;field; jets;emission

Abstract

In the original language

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 & 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.

Cite

PUGLIESE, Daniela and Zdeněk STUCHLÍK. Photon Shells, Black Hole Shadows, and Accretion Toroids. Astrophysical Journal Supplement Series. GB - Spojené království Velké Británie a, 2024, vol. 275, No 2, p. "45-1"-"45-38", 38 pp. ISSN 0067-0049. Available from: https://doi.org/10.3847/1538-4365/ad8645.

@article{82446,
   author = {Pugliese, Daniela and Stuchlík, Zdeněk},
   article_location = {GB - Spojené království Velké Británie a},
   article_number = {2},
   doi = {https://doi.org/10.3847/1538-4365/ad8645},
   keywords = {M87 event horizon; results VII polarization;observational signatures;energy extraction;kerr;images;field; jets;emission},
   language = {eng},
   issn = {0067-0049},
   journal = {Astrophysical Journal Supplement Series},
   title = {Photon Shells, Black Hole Shadows, and Accretion Toroids},
   url = {https://iopscience.iop.org/article/10.3847/1538-4365/ad8645},
   volume = {275},
   year = {2024}
}

TY  - JOUR
ID  - 82446
AU  - Pugliese, Daniela - Stuchlík, Zdeněk
PY  - 2024
TI  - Photon Shells, Black Hole Shadows, and Accretion Toroids
JF  - Astrophysical Journal Supplement Series
VL  - 275
IS  - 2
SP  - "45-1"-"45-38"
EP  - "45-1"-"45-38"
SN  - 00670049
KW  - M87 event horizon
KW  - results VII polarization;observational signatures;energy extraction;kerr;images;field
KW  - jets;emission
UR  - https://iopscience.iop.org/article/10.3847/1538-4365/ad8645
N2  - 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 & 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.
ER  -

PUGLIESE, Daniela and Zdeněk STUCHLÍK. Photon Shells, Black Hole Shadows, and Accretion Toroids. \textit{Astrophysical Journal Supplement Series}. GB - Spojené království Velké Británie a, 2024, vol.~275, No~2, p.~''45-1''-''45-38'', 38 pp. ISSN~0067-0049. Available from: https://doi.org/10.3847/1538-4365/ad8645.

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