报告题目：Explorations on 21cm cosmology: the Tianlai and Hongmeng (DSL) projects

报告人：陈学雷 研究员，中国科学院国家天文台

报告时间：2021年4月14日（周三）15:00-16:00

报告地点：中科院高能所图书馆楼319会议室

腾讯会议ID：824 6579 2265

活动网页：https://indico.ihep.ac.cn/category/824/

报告摘要：

　　The 21cm line of neutral hydrogen is a promising tool for cosmology. I will first briefly review the present status of 21cm cosmology, then I will describe two projects: the Tianlai 21cm intensity mapping experiment in Xinjiang, and the Discovering Sky at the Longest wavelength (DSL, also known by the Chinese name Hongmeng) project, which is a proposed lunar orbit array to map the sky at ultralong wavelength and measure the 21cm global spectrum from cosmic down.

个人简介：

　　Xuelei Chen is a professor at the National Astronomical Observatory, Chinese Academy of Science. He received his Ph.D. from Columbia University in 1999. He works on cosmology, radio astronomy and particle astrophysics, and has published more than 150 research papers in this field. He is the PI for the Tianlai experiment and DSL experiment.