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Supermassive black holes (SMBHs) spend most of their lifetime accreting at a rate well below the Eddington limit, manifesting themselves as low-luminosity active galactic nuclei (LLAGNs). The prevalence of a hot wind from LLAGNs is a generic prediction by theories and numerical simulations of black hole accretion and has recently become a crucial ingredient of AGN kinetic feedback in cosmological simulations of galaxy formation and evolution. However, direct observational evidence for this hot wind is still scarce, let along its efficiency as a feedback mode. Moreover, the very details of the accretion onto LLAGNs remain elusive.  In this talk, I will introduce our recent effort, based primarily on multi-wavelength observations and hydrodynamic simulations, in studying the feeding and feedback of some of the nearest LLAGNs, which are uniquely important for our understanding of the physical working of LLAGNs in general.

BIO

Zhiyuan Li is currently a Professor of the School of Astronomy and Space Science at Nanjing University. He obtained his Bachelor and Master degree in Astronomy at Nanjing University and PhD degree in Astrophysics at the University of Massachusetts, Amherst. His research is mainly focused on high-energy astrophysics in the local universe, with a special interest in the interplay between nearby massive black holes and their environments.

Host: Wei Cui