Invited Presentation

ALMA investigation of circumnuclear-scale AGN feeding and obscuration

Author(s): Takuma Izumi (The University of Tokyo)

Presenter: Takuma Izumi (The University of Tokyo)

I will present our recent result supporting the view that the circumnuclear dense gas disks drive the growth of supermassive black holes (SMBHs). We, for the first time, succeeded in reproducing the balance of nuclear mass flow with an SMBH accretion model that invokes supernova-driven turbulence. I will explain that one of the key parameters for AGN science with ALMA is "mass surface density", by showing some representative examples. The model used here causally connects a circumnuclear star formation and an AGN itself, i.e., the so-called starburst-AGN connection is now naturally established.

I will also discuss some possible studies on nearby AGNs with ALMA (and other telescopes), e.g., circumnuclear gas physical/kinematic structure and the resultant nuclear obscuration. I believe that EA-community has a strong power/facilities to tackle these fascinating topics.