Speaker
Yun Ting Cheng
Description
SPHEREx is a near-infrared satellite mission launched in March 2025, currently conducting the first all-sky near-infrared spectral survey. Its primary cosmological objective is to constrain primordial non-Gaussianity through 3D galaxy clustering, using the all-sky galaxy catalog built from SPHEREx high-resolution photometric spectra. This talk will begin with an overview of the SPHEREx cosmology analysis, with emphasis on preliminary efforts to construct and validate the SPHEREx redshift catalog and to optimize the multi-tracer analysis for primordial non-Gaussianity constraints. I will conclude by discussing potential synergies between the SPHEREx galaxy catalog and a range of current and upcoming CMB and LSS surveys.