11:00 am–12:00 pm ERC 401
Title: Constraining cosmology with kSZ velocity reconstruction
Abstract: The kinematic Sunyaev-Zeldovich (kSZ) effect is the largest contribution to the CMB on small angular scales. New ideas are still emerging for constraining cosmology with the kSZ, and for constructing kSZ-sensitive statistics. I'll talk about one recent proposal: a "velocity reconstruction" quadratic estimator which reconstructs large-scale velocities by cross-correlating kSZ with an overlapping galaxy survey. In the near future, this estimator should improve current constraints on primordial non-Gaussianity (f_NL and related parameters). I'll present theory, forecasts, and data analysis results in progress.
Zoom: https://uchicago.zoom.us/j/96602368359?pwd=IkjlvbgYWG56LPvnyibAje80dqc9wI.1
