Spectral energy distribution profiles from AGN accretion disc
in multigap set-up

J 2023

Spectral energy distribution profiles from AGN accretion disc in multigap set-up

ŠTOLC, Marcel; Michal ZAJAČEK; Bozena CZERNY a Vladimír KARAS

Základní údaje

Originální název

Spectral energy distribution profiles from AGN accretion disc in multigap set-up

Autoři

ŠTOLC, Marcel; Michal ZAJAČEK; Bozena CZERNY a Vladimír KARAS

Vydání

Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2023, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.800

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/23:00134216

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

accretion; accretion discs; black hole physics; radiation mechanisms: general; radiation mechanisms: thermal; dust; extinction; quasars: supermassive black holes

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 7. 9. 2023 10:11, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Spectral energy distribution (SED) of the broad-band continuum emission from black-hole accretion discs can serve as a tool to measure parameters of the central body and constrain the geometry of the inner accretion flow. We focus on the case of an active galactic nucleus (AGN), with an accretion disc dominating the UV/optical bands. We parametrize the changes in the thermal and power-law components, which can reveal the diminution of the emissivity. To this end we explore the effects of gaps in the accretion disc and the emerging SED that can be caused by the presence of either (i) the inner, optically thin, radiatively inefficient hot flow; (ii) a secondary black hole embedded within the accretion disc; or (iii) a combination of both components. We suggest that the resulting changes in the SED of the underlying continuum can help us understand some departures from the standard-disc scenario. We estimate that the data required for such a project must be sampled in detail over the far-UV to soft X-ray bands during the interval of about a month corresponding to the characteristic variability time-scale of an AGN. Detecting a gap at intermediate radii of a few 100 gravitational radii would require quality photometry with uncertainties up to similar to 1 . The presence of the central cavity in the standard disc can be recovered in UV photometric data with an accuracy of 5 per cent and better. We show the effect of the intrinsic reddening of the source and demonstrate when it can be disentangled.

Návaznosti

GX21-13491X, projekt VaV

Název: Zkoumání žhavého vesmíru a porozumění kosmické zpětné vazbě (Akronym: EHU)

Investor: Grantová agentura ČR, Exploring the Hot Universe and Understanding Comic Feedback

Citovat

ŠTOLC, Marcel; Michal ZAJAČEK; Bozena CZERNY a Vladimír KARAS. Spectral energy distribution profiles from AGN accretion disc in multigap set-up. Monthly Notices of the Royal Astronomical Society. Oxford University Press, 2023, roč. 522, č. 2, s. 2869-2884. ISSN 0035-8711. Dostupné z: https://doi.org/10.1093/mnras/stad1127.

@article{2307618,
   author = {Štolc, Marcel and Zajaček, Michal and Czerny, Bozena and Karas, Vladimír},
   article_number = {2},
   doi = {https://doi.org/10.1093/mnras/stad1127},
   keywords = {accretion; accretion discs; black hole physics; radiation mechanisms: general; radiation mechanisms: thermal; dust; extinction; quasars: supermassive black holes},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {Spectral energy distribution profiles from AGN accretion disc in multigap set-up},
   url = {https://doi.org/10.1093/mnras/stad1127},
   volume = {522},
   year = {2023}
}

TY  - JOUR
ID  - 2307618
AU  - Štolc, Marcel - Zajaček, Michal - Czerny, Bozena - Karas, Vladimír
PY  - 2023
TI  - Spectral energy distribution profiles from AGN accretion disc in multigap set-up
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 522
IS  - 2
SP  - 2869-2884
EP  - 2869-2884
PB  - Oxford University Press
SN  - 00358711
KW  - accretion
KW  - accretion discs
KW  - black hole physics
KW  - radiation mechanisms: general
KW  - radiation mechanisms: thermal
KW  - dust
KW  - extinction
KW  - quasars: supermassive black holes
UR  - https://doi.org/10.1093/mnras/stad1127
N2  - Spectral energy distribution (SED) of the broad-band continuum emission from black-hole accretion discs can serve as a tool to measure parameters of the central body and constrain the geometry of the inner accretion flow. We focus on the case of an active galactic nucleus (AGN), with an accretion disc dominating the UV/optical bands. We parametrize the changes in the thermal and power-law components, which can reveal the diminution of the emissivity. To this end we explore the effects of gaps in the accretion disc and the emerging SED that can be caused by the presence of either (i) the inner, optically thin, radiatively inefficient hot flow; (ii) a secondary black hole embedded within the accretion disc; or (iii) a combination of both components. We suggest that the resulting changes in the SED of the underlying continuum can help us understand some departures from the standard-disc scenario. We estimate that the data required for such a project must be sampled in detail over the far-UV to soft X-ray bands during the interval of about a month corresponding to the characteristic variability time-scale of an AGN. Detecting a gap at intermediate radii of a few 100 gravitational radii would require quality photometry with uncertainties up to similar to 1 . The presence of the central cavity in the standard disc can be recovered in UV photometric data with an accuracy of 5 per cent and better. We show the effect of the intrinsic reddening of the source and demonstrate when it can be disentangled.
ER  -

ŠTOLC, Marcel; Michal ZAJAČEK; Bozena CZERNY a Vladimír KARAS. Spectral energy distribution profiles from AGN accretion disc in multigap set-up. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford University Press, 2023, roč.~522, č.~2, s.~2869-2884. ISSN~0035-8711. Dostupné z: https://doi.org/10.1093/mnras/stad1127.

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