AGN feeding and feedback in fornax a : kinematical analysis of the multi-phase ISM

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dc.contributor.author Maccagni, Filippo M.
dc.contributor.author Serra, Paolo
dc.contributor.author Gaspari, M.
dc.contributor.author Kleiner, Dane
dc.contributor.author Morokuma-Matsui, K.
dc.contributor.author Oosterloo, T.A.
dc.contributor.author Onodera, M.
dc.contributor.author Kamphuis, Peter
dc.contributor.author Loi, F.
dc.contributor.author Thorat, Kshitij
dc.contributor.author Ramatsoku, Mpati
dc.contributor.author Smirnov, Oleg M.
dc.contributor.author White, S.V.
dc.date.accessioned 2022-06-27T13:22:24Z
dc.date.available 2022-06-27T13:22:24Z
dc.date.issued 2021-12
dc.description.abstract We present a multi-wavelength study of the gaseous medium surrounding the nearby active galactic nucleus (AGN), Fornax A. Using MeerKAT, ALMA, and MUSE observations, we reveal a complex distribution of the atomic (H i), molecular (CO), and ionised gas in its centre and along the radio jets. By studying the multi-scale kinematics of the multi-phase gas, we reveal the presence of concurrent AGN feeding and feedback phenomena. Several clouds and an extended 3 kpc filament – perpendicular to the radio jets and the inner disk (r . 4:5 kpc) – show highly-turbulent kinematics, which likely induces non-linear condensation and subsequent chaotic cold accretion (CCA) onto the AGN. In the wake of the radio jets and in an external (r & 4:5 kpc) ring, we identify an entrained massive ( 107 M ) multi-phase outflow (vOUT 2000 km s1). The rapid flickering of the nuclear activity of Fornax A ( 3 Myr) and the gas experiencing turbulent condensation raining onto the AGN provide quantitative evidence that a recurrent, tight feeding and feedback cycle may be self-regulating the activity of Fornax A, in agreement with CCA simulations. To date, this is one of the most in-depth probes of such a mechanism, paving the way to apply these precise diagnostics to a larger sample of nearby AGN hosts and their multi-phase inter stellar medium. en_US
dc.description.department Physics en_US
dc.description.librarian am2022 en_US
dc.description.sponsorship The European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme; Montage is funded by the National Science Foundation; the Department of Science and Technology and National Research Foundation. en_US
dc.description.uri http://www.hanspub.org/Journal/AAS.html en_US
dc.identifier.citation Maccagni, F.M., Serra, P., Gaspari, M. et al. 2021, 'AGN feeding and feedback in Fornax A : kinematical analysis of the multi-phase ISM', Astronomy and Astrophysics, vol. 656, no. A45, pp. 1-22. en_US
dc.identifier.issn 2329-1273 (print)
dc.identifier.issn 2329-1265 (online)
dc.identifier.other 10.1051/0004-6361/202141143
dc.identifier.uri https://repository.up.ac.za/handle/2263/85963
dc.language.iso en en_US
dc.publisher Hans Publishers en_US
dc.rights © ESO 2021 en_US
dc.subject Galaxies: individual: fornax A en_US
dc.subject Galaxies: individual: NGC 1316 en_US
dc.subject Galaxies: active en_US
dc.subject Galaxies: kinematics and dynamics en_US
dc.subject Galaxies: ISM en_US
dc.subject Accretion, accretion disks en_US
dc.subject Active galactic nucleus (AGN) en_US
dc.subject MeerKAT en_US
dc.title AGN feeding and feedback in fornax a : kinematical analysis of the multi-phase ISM en_US
dc.type Article en_US


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