Colloquium on Mar. 7, 2024

Probing cosmic dawn from the ground to the lunar orbit

Speaker:Yidong Xu (NAOC)

Venue:SWIFAR Building 2111

Time:15:00 PM, Thursday, Mar. 7, 2024

Abstract:

Various 21 cm signals from neutral hydrogen have been proposed to probe the cosmic dawn, including the global 21 cm spectrum, the 21 cm tomography, and the 21 cm forest. They will provide valuable insights into the early structure formation during the cosmic dawn, and have been identified as the key scientific goals for a number of ground-based and space-borne radio experiments, including the international Square Kilometre Array and the Hongmeng project. In this talk, I’ll share some of the recent progresses on the theories and experiments for probing the cosmic dawn. I will also introduce the Hongmeng project, which is going to measure the global 21 cm signal on lunar orbit.

Report PPT:SWIFAR_Yidong Xu.pdf