Invited Presentation

Resolving supermassive black hole feeding and feedback down to sub-parsec scales

Author(s): Takuma Izumi (NAOJ)

Presenter: Takuma Izumi (NAOJ)

Mass accretion is a fundamental process for the growth of supermassive black holes (SMBHs) and activating the central engines. However, detailed accretion properties have not been observationally identified at the central ~10 parsec of active galaxies due to the compactness. Here we report the first robust identification of a sub/parsec-scale (i.e., 0.01% scale of the host galaxy) dense molecular inflow toward the active nucleus of the Circinus galaxy. Only a tiny portion (< 3%) of this inflow is consumed in the actual SMBH growth but a bulk portion is blown-out by multiphase outflows. The observed dense gas disk is gravitationally unstable and drives accretion down to the central ~1 parsec: the long-standing problem of SMBH fueling is now finally facing its last subparsec delivery. Based on this work, I will also discuss prospects to extensively study SMBH feeding/feedback with future high resolution observations.