Baryon-driven growth of solitonic cores in fuzzy dark matter halos
Jan Veltmaat, Bodo Schwabe, J. C. Niemeyer
Abstract
We present zoom-in simulations of fuzzy dark matter (FDM) halos including baryons and star formation with sufficient resolution to follow the formation and evolution of central solitons. We find that their properties are determined by the local dark matter velocity dispersion in the combined dark matter-baryon gravitational potential. This motivates a simple prescription to estimate the radial density profiles of FDM cores in the presence of baryons. As cores become more massive and compact if baryons are included, galactic rotation curve measurements are likely harder to reconcile with FDM.
Topics & Concepts
PhysicsBaryonDark matterAstrophysicsHaloDark matter haloDark fluidCuspy halo problemGalaxy rotation curveScalar field dark matterBaryonic dark matterCosmologyGalaxyDark energyDark Matter and Cosmic PhenomenaCosmology and Gravitation TheoriesGalaxies: Formation, Evolution, Phenomena