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dc.contributor.author | Maccagni, Filippo M.![]() |
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dc.contributor.author | Serra, Paolo![]() |
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dc.contributor.author | Gaspari, M.![]() |
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dc.contributor.author | Kleiner, Dane![]() |
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dc.contributor.author | Morokuma-Matsui, K.![]() |
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dc.contributor.author | Oosterloo, T.A.![]() |
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dc.contributor.author | Onodera, M.![]() |
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dc.contributor.author | Kamphuis, Peter![]() |
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dc.contributor.author | Loi, F.![]() |
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dc.contributor.author | Thorat, Kshitij![]() |
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dc.contributor.author | Ramatsoku, Mpati![]() |
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dc.contributor.author | Smirnov, Oleg M.![]() |
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dc.contributor.author | White, S.V.![]() |
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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 |