Title：Powering the optical filaments in cool core clusters of galaxies

　　Speaker：Gary Ferland (University of Kentucky)

　　Abstract：The intracluster medium in cool core clusters of galaxies must be energized by feedback from the central AGN but the physical mechanism is unknown. The central AGN is usually surrounded by a system of filaments which appear similar to those in the Crab Nebula. The filaments have a very unusual low ionization / molecular spectrum and are not powered by starlight. I will describe our investigations into the origins of the filaments and their power source, and what role they may play in the feedback process.

　　Time：June 17 (Friday), 10:30pm

　　Place：Room 402, Astronomy Building

欢迎各位老师、同学参加！

　　                                            南京大学天文与空间科学学院