AGN feeding and feedback in Fornax A. Kinematical analysis of the multi-phase ISM

F. M. Maccagni; P. Serra; M. Gaspari; D. Kleiner; K. Morokuma-Matsui; T. A. Oosterloo; M. Onodera; P. Kamphuis; F. Loi; K. Thorat; M. Ramatsoku; O. Smirnov; S. V. White

doi:10.1051/0004-6361/202141143

AGN feeding and feedback in Fornax A. Kinematical analysis of the multi-phase ISM

F. M. Maccagni^*, P. Serra, M. Gaspari, D. Kleiner, K. Morokuma-Matsui, T. A. Oosterloo, M. Onodera, P. Kamphuis, F. Loi, K. Thorat, M. Ramatsoku, O. Smirnov, S. V. White

^*Corresponding author for this work

Astronomy

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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 (v_OUT ∼ 2000 km s⁻¹). 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.

Reduced images and datacubes are also available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/656/A45

Original language	English
Article number	A45
Number of pages	22
Journal	Astronomy & Astrophysics
Volume	656
DOIs	https://doi.org/10.1051/0004-6361/202141143
Publication status	Published - 2-Dec-2021

Keywords

galaxies: individual: Fornax A
galaxies: individual: NGC 1316
galaxies: active
galaxies: kinematics and dynamics
galaxies: ISM
accretion
accretion disks
Astrophysics - Astrophysics of Galaxies

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AGN feeding and feedback in Fornax AKinematical analysis of the multi-phase ISMFinal publisher's version, 33.9 MBLicence: Unspecified

https://ui.adsabs.harvard.edu/abs/2021A&A...656A..45M

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Feeding and feedback in Fornax A
MacCagni, F. M. (Contributor), Serra, P. (Contributor), Gaspari, M. (Contributor), Kleiner, D. (Contributor), Morokuma-Matsui, K. (Contributor), Oosterloo, T. A. (Contributor), Onodera, M. (Contributor), Kamphuis, P. (Contributor), Loi, F. (Contributor), Thorat, K. (Contributor), Ramatsoku, M. (Contributor), Smirnov, O. (Contributor) & White, S. V. (Contributor), Strasbourg Astronomical Data Center, 2-Dec-2021
DOI: 10.26093/cds/vizier.36560045
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title = "AGN feeding and feedback in Fornax A. Kinematical analysis of the multi-phase ISM",

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 s−1). 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. Reduced images and datacubes are also available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/656/A45",

keywords = "galaxies: individual: Fornax A, galaxies: individual: NGC 1316, galaxies: active, galaxies: kinematics and dynamics, galaxies: ISM, accretion, accretion disks, Astrophysics - Astrophysics of Galaxies",

author = "Maccagni, {F. M.} and P. Serra and M. Gaspari and D. Kleiner and K. Morokuma-Matsui and Oosterloo, {T. A.} and M. Onodera and P. Kamphuis and F. Loi and K. Thorat and M. Ramatsoku and O. Smirnov and White, {S. V.}",

year = "2021",

month = dec,

day = "2",

doi = "10.1051/0004-6361/202141143",

language = "English",

volume = "656",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = " EDP Sciences",

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TY - JOUR

T1 - AGN feeding and feedback in Fornax A. Kinematical analysis of the multi-phase ISM

AU - Maccagni, F. M.

AU - Serra, P.

AU - Gaspari, M.

AU - Kleiner, D.

AU - Morokuma-Matsui, K.

AU - Oosterloo, T. A.

AU - Onodera, M.

AU - Kamphuis, P.

AU - Loi, F.

AU - Thorat, K.

AU - Ramatsoku, M.

AU - Smirnov, O.

AU - White, S. V.

PY - 2021/12/2

Y1 - 2021/12/2

N2 - 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 s−1). 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. Reduced images and datacubes are also available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/656/A45

AB - 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 s−1). 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. Reduced images and datacubes are also available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/656/A45

KW - galaxies: individual: Fornax A

KW - galaxies: individual: NGC 1316

KW - galaxies: active

KW - galaxies: kinematics and dynamics

KW - galaxies: ISM

KW - accretion

KW - accretion disks

KW - Astrophysics - Astrophysics of Galaxies

U2 - 10.1051/0004-6361/202141143

DO - 10.1051/0004-6361/202141143

M3 - Article

SN - 0004-6361

VL - 656

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

M1 - A45

ER -

AGN feeding and feedback in Fornax A. Kinematical analysis of the multi-phase ISM

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