Abstract: The circumnuclear region in nearby active galaxies allows a more detailed view of the AGN-host galaxy interaction than their high redshift siblings. However, it is ubiquitously highly complex with presence of ionized gas, collimated radio outflow, and star formation activities, besides the active nucleus. I will present the CHandra Extended Emission Line Region Survey (CHEERS), an X-ray imaging spectroscopic study of the circumnuclear regions of nearby archetypal Seyfert galaxies, designed to take full advantage of Chandra's unique angular resolution by spatially resolving feedback signatures, jet-cloud interactions and merger activities. Supplemented with observations in other wavelength, the line ratios and kinematics provide keys to diagnose if the line emission is excited through photoionization by the active nucleus or through high-velocity shocks generated at the interface between an outflow and the ISM.

 

Bio: Dr. Junfeng Wang received his Bachelor's degree from Department of Astronomy at Nanjing University in 2001 and obtained his PhD degree at Pennsylvania State University in 2007. He then worked with Dr. Pepi Fabbiano as a postdoctoral scholar at the Harvard-Smithsonian Center for Astrophysics for 4 years, before moving to Northwestern University as a Research Assistant Professor and a CIERA Fellow. In 2013 he joined Department of Astronomy at Xiamen University as a professor through the National Young Thousand Talented program. He is specialized in X-ray observations of galaxies and Galactic star forming regions, and has been Principal Investigator of ~10 NASA/ESA space telescope observation projects including Chandra, XMM-Newton, HST and Spitzer. His main research interests are: co-evolution of supermassive black holes and their host galaxies on a cosmic timescale, galaxy mergers and their importance in galaxy assembly history.