Oral Presentation

High Spatial Resolution X-ray Imaging Spectroscopy of the Complex Circum-nuclear Regions in Active Galaxies

Author(s): Junfeng Wang (Xiamen University)

Presenter: Junfeng Wang (Xiamen University)

I will introduce highlights from several ongoing research topics on spatially resolved X-ray imaging studies of nearby galaxies mostly based on Chandra observations, aiming to initiate cross-strait collaborations among us. The circum-nuclear region in active galaxies is often complex with presence of high excitation gas, collimated radio outflow, and star forming regions, besides the active nucleus. In studies of a number of archetypal Seyfert galaxies (for example, NGC4151 and NGC 1068), we were able to evaluate the mass outflow and shock heating by radio jet. For galaxies in the throes of a violent merging event such as NGC6240, we were able to resolve 70MK hot gas surrounding the double nuclei and discovered a large scale soft X-ray halo. The unique resolving power of Chandra also enables more discovery of such dual AGN systems.