Title: Feeding and feedback of super-massive black holes: inflows and outflows in the two nearest galactic nuclei

Speaker: Zhiyuan Li (UCLA, USA)

Time: September 5, 2:00PM

Location: 3rd floor

Abstract:
Studies of nearby galactic nuclei hold promise for understanding the interaction and evolution of the central super-massive black hole and its environment, which is crucial for understanding galaxy evolution in general. In the first part of this talk, I will present a study of cool gas in the nuclear region of the Andromeda galaxy (M31), based on recently available HST images tracing dust extinction. I will discuss the morphology and fine structures of the dusty gas under sub-parsec resolutions, the extinction law in a spatially-resolved fashion, and implications on the physical regulation of the circumnuclear ISM. In the second part, I will present new evidence for a long-sought jet emanating from the Galactic Center Black Hole, known as Sgr A*, based on recent Chandra and VLA observations.