Cosmological Simulations of structure formation
Our simulation suite currently consists of:
- 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.
The simulations have been re-run starting from the same initial conditions, but assuming different self-interacting dark matter flavours. These include constant cross section of 0 (CDM case), 1 cm^2/g and 10 cm^2/g, as well as velocity dependent models (as shown in figure on the right).



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.
Meet the Team
Camila Correa (PI)
Veni Fellow at the University of Amsterdam
Matthieu Schaller
Lecturer at Leiden University, lead developer of the galaxy formation code SWIFT
Sylvia Ploeckinger
Postdoctoral fellow at Leiden University
Noemi Anau Montel
PhD Student at the University of Amsterdam
Weniger Christoph
A/Prof. at the University of Amsterdam
Shinichiro Ando
A/Prof. at the University of Amsterdam
Sponsors
This project is funded by NWO (Netherlands Organisation for Scientific Research). NWO Veni 192.020. The TangoSIDM simulation suite has been produced using the DECI resource Mahti (Finland/CSC), PRACE aisbl., project ID 17DECI0030-TangoSIDM, as well as the Dutch national e-infrastructure, Snellius, SURF Cooperative, project ID EINF-180-TangoSIDM.



