报告题目：Galaxy spins and their probe of the primordial Universe

　　报告人：于浩然（厦门大学，副教授）

　　摘要：In this talk I will discuss the galaxy angular momenta — their origin, observation, prediction, and they as a potential probe of the primordial Universe. In the current and upcoming galaxy surveys we have focused on galaxies’ positions and velocities. Galaxies also have rotations and we can use these information to learn more about the Universe. In Lagrangian space the protohalo spins are well described by the tidal torque theory, and numerical simulations have given a general picture of spin conservation over galaxy formation. We have verified the correlation between observed galaxy spins and cosmic initial conditions (density mode reconstruction by ELUCID). We have also proposed the potential detection of neutrino mass, possible parity violation via galaxy spins in Lagrangian space.

　　报告时间：2020年4月23日，上午10:00（本周四）

　　直播地点：https://zoom.com.cn/j/67383612011

　　邀请团组：星系宇宙学与暗能量研究

欢迎大家参加！

紫金山天文台学术委员会