Observational Tests of Wave and Particle Dark Matter Predictions

Résumé

This common core-halo structure is hard to understand for standard heavy particledark matter where featureless, concentrated profiles are predicted, whereas darkmatter as a Bose-Einstein condensate, ¿DM, naturally accounts for the observedprofiles, predicting a dense soliton core in every galaxy surrounded by a tenuoushalo of interfering waves. We show that the stellar profiles of the well studied"dwarf Spheroidal" (dSph) class, and also the equally numerous "ultra faint dwarfs"(UFD) are accurately fitted by the core-halo structure of ¿DM, suggesting two bosonspecies which are reinforced by parallel relations seen between the central density andradius of UDF and dSph dwarfs respectively, which both match the steep prediction,¿c ¿ R¿4 c , for soliton cores in the ground state. Here we also compare these stellarprofiles with hydrodynamical simulations where the previously observed core-halostructure is predicted to be visible in the ¿DM context, but not for CDM.