Galaxy skew-spectra in redshift-space

Modern galaxy surveys focus on the power spectrum or 2-point correlation function to test and constrain cosmological models. Additional information comes from higher-order N-point functions, but their analysis is challenging. A simple solution compute cross-power between squared density density. Being measure plot, this skew-spectrum shares many of familiar useful properties standard spectrum. We show that by computing multiple quadratic fields correlating them with density, all contributions tree-level redshift-space bispectrum can be captured skew-spectra. Using synthetic datasets, we our measurement pipeline matches analytical predictions, dependence bias parameters logarithmic growth rate as expected theoretically.