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The role of failed accretion disk winds in active galactic nuclei

Published online by Cambridge University Press:  29 January 2021

Margherita Giustini  and
Daniel Proga
Margherita Giustini
Affiliation:
Centro de Astrobiología (CSIC-INTA), Departamento de Astrofísica, Camino Bajo del Castillo s/n, Villanueva de la Cañada, E-28692 Madrid, Spain email: mgiustini@cab.inta-csic.es
Daniel Proga
Affiliation:
Department of Physics & Astronomy, University of Nevada, Las Vegas, 4505 South Maryland Parkway, NV 89154-4002 Las Vegas, USA email: dproga@physics.unlv.edu
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Abstract

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Both observational and theoretical evidence point at outflows originating from accretion disks as fundamental ingredients of active galactic nuclei (AGN). These outflows can have more than one component, for example an unbound supersonic wind and a failed wind (FW). The latter is a prediction of the simulations of radiation-driven disk outflows which show that the former is accompanied by an inner failed component, where the flow struggles to escape from the strong gravitational pull of the supermassive black hole. This FW component could provide a physical framework to interpret various phenomenological components of AGN. Here we briefly discuss a few of them: the broad line region, the X-ray obscurer, and the X-ray corona.

Keywords

accretionaccretion disksblack hole physicsgalaxies: active
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S356: Nuclear Activity in Galaxies Across Cosmic Time , October 2019 , pp. 82 - 86
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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