Motivation: TangoSIDM poject
Cosmological Simulations of Structure Formation
- a set of dark matter-only high-resolution boxes: of (25 Mpc)^3 cubic volume with 752^3 baryon particles and 752^3 DM particles, reaching a spatial resolution of 350 pc.
- a hydrodynamical suite of (25 Mpc)^3 cubic volume with 376^3 baryon particles and 376^3 DM particles, reaching a spatial resolution of 752 pc.
Dark Matter density projection of 25 Mpc box.
Dark Matter Particle-Particle collisions in SWIFT
We have modelled the interaction between dark matter (DM) particles following a stochastic approach, where DM particles have a probability of interaction that depends on the cross section, σ/m, as well as on the distance and relative velocity between them. The search radius, which encloses a region where a DM particle has the probability of interacting with its neighbours, is not constant, instead it is adjusted according to the local density.