Consistent Modeling of Velocity Statistics and Redshift-Space Distortions in One-Loop Perturbation Theory

1 May 2020 Shi-Fan Chen Zvonimir Vlah Martin White

The peculiar velocities of biased tracers of the cosmic density field contain important information about the growth of large scale structure and generate anisotropy in the observed clustering of galaxies. Using N-body data, we show that velocity expansions for halo redshift-space power spectra are converged at the percent-level at perturbative scales for most line-of-sight angles $\mu$ when the first three pairwise velocity moments are included, and that the third moment is well-approximated by a counterterm-like contribution... (read more)

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