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教職演講

Observational Cosmology with Galaxy Clusters in the era of Large Sky Surveys

演講者 : Dr. I-Non Chiu (邱奕儂) (Prize Postdoctoral Fellow) (Tsung-Dao Lee Institute, China)
演講時間 : 2022 / 01 / 11 11:10
理學教學新大樓物理系 5F 36567會議室
Cluster cosmology has entered into a new and exciting era allowing us to probe the universe at an unprecedented scale, thanks to the deployment of large-sky surveys in multiple wavelengths and the recent achievements in characterizing cluster populations using large samples. In this talk, I will first provide an overview of cluster cosmology and highlight the current state-of-the-art constraints based on galaxy clusters. As the key to the success of cluster cosmology, I will then present the recent results of observable-to-mass relations with the mass calibration using weak gravitational lensing. Next, I will talk about the Hyper Suprime-Cam (HSC) survey, the most powerful lensing survey to date, and the eROSITA all-sky survey, the ultimate X-ray survey for cluster cosmology. In particular, I will show the latest results of cluster cosmology in a synergy between HSC and eROSITA, paving a way forward for the joint cosmological study based on large lensing and X-ray surveys. Finally, I will give a prospect of cluster cosmology.