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Circum-nuclear molecular disks: Role in AGN fueling and feedback

Published online by Cambridge University Press:  29 March 2021

Francoise Combes Open the ORCID record for Francoise Combes [Opens in a new window]
Francoise Combes*
Affiliation:
Observatoire de Paris, LERMA, Collège de France, CNRS, PSL University, Sorbonne University, UPMC, Paris email: francoise.combes@obspm.fr
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Abstract

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Gas fueling AGN (Active Galaxy Nuclei) is now traceable at high-resolution with ALMA (Atacama Large Millimeter Array) and NOEMA (NOrthern Extended Millimeter Array). Dynamical mechanisms are essential to exchange angular momentum and drive the gas to the super-massive black hole. While at 100pc scale, the gas is sometimes stalled in nuclear rings, recent observations reaching 10pc scale (50mas), may bring smoking gun evidence of fueling, within a randomly oriented nuclear gas disk. AGN feedback is also observed, in the form of narrow and collimated molecular outflows, which point towards the radio mode, or entrainment by a radio jet. Precession has been observed in a molecular outflow, indicating the precession of the radio jet. One of the best candidates for precession is the Bardeen-Petterson effect at small scale, which exerts a torque on the accreting material, and produces an extended disk warp. The misalignment between the inner and large-scale disk, enhances the coupling of the AGN feedback, since the jet sweeps a large part of the molecular disk.

Keywords

galaxies: activegalaxies: generalgalaxies: nucleigalaxies: Seyfertgalaxies: spiral
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S359: Galaxy Evolution and Feedback across Different Environments , March 2019 , pp. 312 - 317
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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