Does the Radiative Avalanche Fueling Work in Any Active Galactic Nuclei?

Recently Umemura, Fukue, & Mineshige (1997) proposed the radiative avalanchefueling to active galactic nuclei; gas accretion is driven by radiation dragexerted by stellar radiation from circumnuclear starburst regions. Thismechanism is also interesting in terms of starburst-AGN connections. Wetherefore present observational tests for the radiative avalanche fueling. Ourtests, however, show that gas accretion rates driven by the radiative avalancheare significantly lower than those expected from the standard accretion theoryapplied for typical active galactic nuclei with the circumnuclear starburstregions. Instead we propose an alternative, possible starburst-AGN connection;a minor merger with a nucleated satellite drives circumnuclear starbursts andthen leads to gas fueling onto the central engine as the merger proceeds.Comment: 12 page