Article (Scientific journals)
The Wind Dynamics of Super-Eddington Sources in FRADO
Naddaf Moghaddam, Mohammad Hassan; Czerny, Bożena; Zajaček, Michal
2022In Dynamics, 2 (3), p. 295 - 305
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Keywords :
active galaxies; broad-line region; dust-driving mechanism; FRADO model; radiation pressure; super-Eddington accretion disk; Engineering (miscellaneous); Mathematics (miscellaneous); Physics and Astronomy (miscellaneous); astro-ph.GA; astro-ph.HE
Abstract :
[en] We perform non-hydrodynamical 2.5D simulations to study the dynamics of material above accretion disk based on the disk radiation pressure acting on dust. We assume a super-accreting underlying disk with the accretion rate of 10 times the Eddington rate with central black hole mass ranging from (Formula presented.) up to (Formula presented.). Such high accretion rates are characteristic for extreme sources. We show that for high accretors the radiatively dust-driving mechanism based on the FRADO model always leads to a massive outflow from the disk surface, and the failed wind develops only at larger radii. The outflow rate strongly depends on the black hole mass, and an optically thick energy-driven solution can exceed the accretion rate for masses larger than (Formula presented.) but momentum-driven outflow does not exceed the accretion rate even for super-Eddington accretion, therefore not violating the adopted stationarity of the disk. However, even in this case the outflow from the disk implies a strong mechanical feedback.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Naddaf Moghaddam, Mohammad Hassan  ;  Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw, Poland ; Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland
Czerny, Bożena ;  Center for Theoretical Physics (PAN), Warsaw, Poland
Zajaček, Michal ;  Center for Theoretical Physics (PAN), Warsaw, Poland ; Department of Theoretical Physics and Astrophysics, Faculty of Science, Masaryk University, Brno, Czech Republic
Language :
English
Title :
The Wind Dynamics of Super-Eddington Sources in FRADO
Publication date :
September 2022
Journal title :
Dynamics
ISSN :
1497-3715
Publisher :
MDPI
Volume :
2
Issue :
3
Pages :
295 - 305
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
NCN - Polish National Science Centre
MNiSW - Polish Ministry of Science and Higher Education
Funding text :
The project was partially supported by the Polish Funding Agency National Science Centre, project 2017/26/A/ST9/00756 (MAESTRO 9), and MNiSW grant DIR/WK/2018/12. MZ acknowledges the financial support of the GAČR EXPRO grant No. 21-13491X “Exploring the Hot Universe and Understanding Cosmic Feedback”. In addition, MZ is grateful for the support by the Czech–Polish mobility program (MSMT 8J20PL037) and by the NAWA grant under agreement PPN/BCZ/2019/1/00069.
Commentary :
13 pages, 3 figures, published in the journal of Dynamics (MDPI)
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since 12 January 2025

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