Description
TUESDAY SESSION
This session will be devoted to generation of science goals for an ambitious experiment to follow LSST/DESI.
We will start with updates from current state of the art, talks are 10+5
Tzu-Ching Chang: 21cm from GBT
Richard Shaw: CHIME
Kavilan Moodley: HIRAX
Albert Stebbins: Tianlai
followed by discussion (1 hour) on main science goals:
- expansion history to z=6
- Neff and mnu constraints (or helping other probes improve them)
- tidal mapping and weak lensing
- non-Gaussianity
- PZ calibration
What are the unique strengths of 21-cm vs galaxy surveys beyond its cost?
What are its main weaknesses? How do we go around them?
What are opportunities and threats to the program?