| Time：1150722 (Wed.) 13:30~14:30 Speaker：Lecturer Taweewat Somboonpanyakul (ทวีวัฒน์ สมบูรณ์ปัญญากุล) 泰國朱拉隆功大學/Chulalongkorn Univesrity Title：CHIPS1911+4455: A Cooling flow in a Merging Cluster Abstract：The Clusters Hiding in Plain Sight (CHiPS) survey uncovered CHIPS1911+4455 at z = 0.485, a unique system that combines one of the lowest-entropy, fastest-cooling cores known with a highly disturbed X-ray morphology. At its center, the brightest cluster galaxy is undergoing a massive starburst (~150 Msun yr⁻¹), making it one of the most extreme BCGs at low redshift and a rare analog of high-z star-forming systems. I will present the discovery and characterization of this cluster with Chandra and HST, and briefly highlight recent multiwavelength follow-up, including NOEMA detections of a large molecular gas reservoir and JVLA/VLBA evidence for a newly born radio AGN. Together, these results suggest that CHIPS1911+4455 is caught in a rare transitional phase, where merger-driven turbulence and runaway cooling fuel both intense star formation and the onset of AGN feedback. Place：F101, Gongguan Campus, NTNU |
