报告题目：The small-scale puzzles of ΛCDM and structural diversity of dwarf galaxies 

报告人：姜方周 助理教授（北京大学科维理天文与天体物理研究所）

报告摘要：The ΛCDM paradigm of structure formation is successful on cosmological large scales but confronts challenges on sub-galactic small scales, regarding the number count, the internal structure, and the spatial distributions of dwarf galaxies and satellite galaxies. In this talk, I present semi-analytical and numerical efforts in quantifying these small-scale puzzles, within the concordance cosmology and in an alternative cosmology consisting of self-interacting dark matter. I discuss frontier trial solutions in the baryonic sector and in the dark sector and compare their pros and cons. 

报告时间：2025年1月10日（周五）14:00

报告地点：仙林园区3-402室

欢迎大家参加！