We present the public release of OpenGadget3 (OG3), a substantially extended and re-organised version of the widely used Gadget-2/3 family of cosmological simulation codes. Since G2 was made publicly ...

In this work we explore the imprints of self-interacting dark matter (SIDM) on the structure of simulated galaxy groups and clusters in view of future optical surveys. We find that both baryonic and p...

Set in Valencia’s historic center, this workshop will address the outstanding challenges in small-scale structure formation of the Universe, encompassing numerical simulations, semi-analytical modeling, and particle-physics models of dark matter. By leveraging data from current and upcoming observational facilities such as Gaia, JWST, Euclid, Rubin, and Roman, we will explore novel probes of their astrophysical signatures, including but not limited to, strong gravitational lensing, stellar...

Surprisingly compact substructures in galaxies and galaxy clusters, but also field halos, have been observed by gravitational lensing. They could be difficult to explain with collisionless dark matter...

The properties of satellite halos provide a promising probe for dark matter (DM) physics. Observations motivate current efforts to explain surprisingly compact DM halos. If DM is not collisionless but...

Dark matter (DM) particles can interact with particles of the Standard Model. Although there exist constraints from direct and indirect detection experiments, the dynamical evolution of astrophysical ...