18 February 2020The nature of the accretion flow in Active Galactic Nuclei

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Le 16 novembre 2016
De 14h30 à 15h30

Chris Done, University of Durham

Understanding the accretion flow in AGN has recently become an important cosmological problem as AGN feedback via winds and the jet is now known to control the star formation powered growth of galaxies. However, we have no current global models for the power carried by these components, nor do we know how they tie to the accretion flow, which is not surprising as we do not understand the structure of the accretion flow itself. I will review what we know about the way the observed spectral energy distribution changes with mass and mass accretion rate, and propose a global model for the accretion flow structure which includes the soft X-ray excess. I use this accretion flow structure as the basis for a proposed quantitive model for the power carried by winds and jets.