An accurate comprehensive approach to substructure – II. Stripped subhaloes

ABSTRACT In Salvador-Solé, Manrique & Botella (Paper I), we used the ConflUent System of Peak trajectories (CUSP) formalism to derive from first principles and no single free parameter accurate abundance radial distribution both diffuse dark matter (dDM) subhaloes accreted on haloes their progenitors at all previous times. Here use those results as initial conditions for monitoring evolution dDM within host haloes. Specifically, neglecting dynamical friction, accurately calculate effects repetitive tidal stripping heating they orbit inside halo infer amount subsubhaloes release into intrahalo medium. We then expected stripped dDM. This derivation clarifies role concentration in substructure unravels origin some key features found simulations including dependence mass. addition, it unveils specific friction substructure. The derived here are purely accreting Salvador-Solé et al. III), complete study by addressing case low-mass subhaloes, unaffected ordinary having suffered major mergers.