Author

A. Ragagnin

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Preprint Sep 2026

Euclid preparation. The shape of halo profiles in $\Lambda$CDM and non-standard cosmologies

We study the shape of three-dimensional and projected dark-matter halo profiles extracted from cosmological $N$-body simulations in $\Lambda$CDM and non-standard cosmologies, using the \texttt{DUSTGRAIN-PF} and \texttt{DEMNUni} suites. The models considered include massive neutrinos, $f(\mathcal{R})$ gravity, and dynam...

Euclid Collaboration L. Pizzuti, G. Y. Ferron, A. Ragagnin et al. · 0 citations

Preprint Sep 2026

The OpenGadget3 Code for Cosmological Simulations

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 available, the absence of continued official development led to the creation of numerous, mutually incompatible develope...

K. Dolag, Geray S. Karademir, L. Tornatore et al. · 1 citation

Review Aug 2026

Searching for signatures of self-interacting dark matter in halos from full-physics simulations: From 3D structure to projected observables

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 projection effects lead to a significant alleviation of the SIDM core-forming behavior on the mass and density profiles,...

G. Y. Ferron, A. Ragagnin, Lorenzo Pizzuti et al. · 0 citations