2022/07/22(Fri)
10:30 -12:30
五樓第一會議室 5F, 1st Meeting Room
視訊演講 Video Seminar [ Meeting Link / ID: 2513 891 6532 / Password: x3Game8v7Nm ]
Title
The Origin of the Cosmic Submillimeter Background
Speaker
陳建州博士 (中央研究院天文及天文物理研究所) Dr. Chian-Chou Chen (Institute of Astronomy and Astrophysics, Academia Sinica)Abstract
Extragalactic background light (EBL), the integrated light flux densities outside the Milky Way, provides one of the most fundamental electromagnetic constraints to the observable Universe. While the cosmic microwave background (CMB) dominates the EBL energy budget, it is the cosmic optical (COB) and comic infrared background (CIB) that inform us most about galaxy formation and evolution. In this talk, I plan to first briefly review the current understandings of EBL, and then dig further into the submillimeter regime where we have seen recent progress. In the second part of the talk I will discuss the submillimeter galaxy (SMG), the dominant contributor to the submillimeter background, and presents our current understanding with regards to their role under the framework of galaxy formation and evolution. If time permits, I will discuss challenges that the state-of-the-art theoretical models are currently facing in terms of reproducing the observed properties of SMGs, and how that may impact galaxy formation theory in general.
Language
演講語言 (Language): in English