Tue, December 13, 2022
12:00 pm - 1:00 pm
PRB 1080 & Zoom Webinar
Speaker: Zhilei Xu (MIT)
Precision Cosmology: from CMB to 21cm
Over the past decades, observations of the cosmic microwave background (CMB) have established the standard cosmological model. In the future, 21cm signals from neutral hydrogen have great potential for cosmological and astrophysical studies. In this talk, I will briefly review the previous CMB observations. Then I will discuss the instrumentation and on-sky calibration of the Cosmology Large Angular Scale Surveyor (CLASS) and the Simons Observatory (SO). At the end, I will discuss how we can use the 21cm observation as a powerful probe to study cosmology, and introduce our novel mapping method for 21cm interferometric data.