报告题目：Turbulence and star formation across clouds and galaxies

报告人：刘训川 博士（莱顿大学）

报告摘要：Turbulence dominates the early evolutionary phases of interstellar clouds, driving the development of filamentary structures in HI clouds, the formation of transitional clouds, and the mass function of star-forming regions. In this talk, I will share my perspective on how turbulence operates from both theoretical and observational standpoints. Specifically, I will present my recent work utilizing the 100 deg² PPCOS CO survey of the Polaris Flare. Our results demonstrate how pure Kolmogorov turbulence persists from 20 pc down to below 0.1 pc. Within this regime, the density field exhibits multi-fractal structures while the underlying turbulent mode remains unshifted. Additionally, I will discuss how dust couples with HI and CO gas during these early evolutionary stages. I will also outline my view on how dense clumps act as the primary drivers governing star/cluster formation patterns across the Milky Way and the Large Magellanic Clouds (LMCs).

报告时间：2026年7月15日10:00

报告地点：紫台仙林园区5号楼516会议室

欢迎大家参加！