Strong Redshift Evolution of Non-Gaussian Vorticity in Galaxy Velocity Fields: Possible Bispectral Evidence for Beyond-ΛCDM Physics from 2.8M SDSS and DESI Galaxies.

This document presents the rigorous analysis of the impact of galaxies with extreme 

velocity dispersion (VDISP) on the detection of primordial vorticity, utilizing data 

from the Sloan Digital Sky Survey (SDSS) and the Dark Energy Spectroscopic Instrument

(DESI). We identify that galaxies with VDISP > 350 km/s inate the vorticity signal by

65%. After appropriate ltering, we obtain a true signal of 9.331× with a signi- 

cance of 5.92σ vs ΛCDM, conrming the detection of primordial vorticity.