Observational Constraints on Radiatively Inefficient Accretion Flows in Nearby AGNs

Abstract

Results of recent X-ray observations of low-luminosity AGNs are summarized. The lack of the signature of X-ray reflection features and big blue bump is in good agreement with the prediction that an optically thick accretion disk is truncated. Comparison of radio and X-ray luminosities indicates that low-luminosity objects tend to be radio loud compared to more luminous AGNs, suggesting efficient jet production in low-luminosity accretion flows.