Implications of triangular features in the Gaia skymap for the Caustic Ring Model of the Milky Way halo

The Gaia map of the Milky Way reveals a pair triangular features at nearly symmetric locations on opposite sides Galactic Center. In this paper we explore implications these assuming they are manifestations caustic ring in dark matter distribution halo. existence series such rings is predicted by Caustic Ring Model. model’s phase-space that acquired rethermalizing Bose–Einstein condensate axions or axion-like particles. We show dust gravitationally entrained cold axion flows and propose as an explanation for sharpness features. imply Earth much closer to fifth than thought basis pre-Gaia observations. Most likely inside its tricusp cross-section. case density dominated four flows, termed Big, Little, Up Down. If outside cross-section two Big Little. use map, matching feature IRAS estimate velocity vectors densities locally dominant flows.