The OpenGadget3 Code for Cosmological Simulations

arXiv:2609.17658 · astro-ph.IM, astro-ph.CO, astro-ph.GA · Submitted 2026-09-15 · Read on arXiv

astro-ph.IM, astro-ph.CO, astro-ph.GA

Submitted: 2026-09-15

Updated: 2026-09-15

Comments: 70 Pages, 26 pictures, submitted, OpenGadget3 available via https://gitlab.lrz.de/AstroCodes/OpenGadget3

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Accuracy — 20× in this paper · explained in 1 episode
• Abundance — 19× in this paper · explained in 1 episode
• AGN — 17× in this paper · explained in 1 episode
• Metallicity — 17× in this paper · explained in 3 episodes
• Consistency — 11× in this paper · explained in 3 episodes
• Core — 10× in this paper · explained in 2 episodes
• AGN Feedback — 6× in this paper · explained in 1 episode
• Clustering — 6× in this paper · explained in 2 episodes
• Meshless Finite Mass — 6× in this paper
• Particle Mesh — 6× in this paper
• Stellar Feedback — 4× in this paper · explained in 2 episodes
• Momentum transfer — 3× in this paper · explained in 2 episodes
• Robustness — 3× in this paper · explained in 5 episodes
• Active Galactic Nuclei — 2× in this paper
• Anisotropy — 2× in this paper · explained in 3 episodes
• Benchmark — 2× in this paper · explained in 2 episodes
• Cold front — 2× in this paper · explained in 2 episodes
• Conservation Laws — 2× in this paper · explained in 3 episodes
• Decoupling — 2× in this paper · explained in 2 episodes
• Hybrid Approach — 2× in this paper · explained in 4 episodes
• Scalable Parallel Astrophysical Codes for Exascale — 2× in this paper
• Streaming Instability — 2× in this paper · explained in 2 episodes
• Trace — 2× in this paper · explained in 2 episodes
• Velocity Dispersion — 2× in this paper · explained in 2 episodes
• alpha — 2× in this paper · explained in 1 episode
• Accretion Efficiency — 1× in this paper · explained in 2 episodes
• Accretion Physics — 1× in this paper · explained in 2 episodes
• Active Galactic Nuclei (AGN) — 1× in this paper · explained in 1 episode
• Adam — 1× in this paper · explained in 2 episodes
• Adaptivity — 1× in this paper · explained in 1 episode
• Advanced Micro Devices — 1× in this paper
• Alignment — 1× in this paper · explained in 1 episode
• Calibration — 1× in this paper · explained in 7 episodes
• Communication Overhead — 1× in this paper · explained in 2 episodes
• Diffusion Model — 1× in this paper · explained in 8 episodes
• Higher-order derivatives — 1× in this paper · explained in 2 episodes
• Hybrid Architectures — 1× in this paper · explained in 3 episodes
• Initial Mass Function (IMF) — 1× in this paper · explained in 2 episodes
• Italian Ministry of University and Research — 1× in this paper
• Mass Segregation — 1× in this paper · explained in 2 episodes
• Message Passing Interface — 1× in this paper
• N-body simulations — 1× in this paper · explained in 2 episodes
• Performance Computing Joint Undertaking — 1× in this paper
• Point Clouds — 1× in this paper · explained in 2 episodes
• Population Synthesis — 1× in this paper · explained in 2 episodes
• Unified Framework — 1× in this paper · explained in 5 episodes
• Verification — 1× in this paper · explained in 2 episodes

Sources

• Fundamental differences between SPH and grid methods
• Modelling Primordial Gas in Numerical Cosmology
• Planck 2018 results. VI. Cosmological parameters
• Scaling relations for galaxy clusters in the Millennium-XXL simulation
• Euclid: Modelling massive neutrinos in cosmology -- a code comparison
• Cosmological Hydrodynamics with Multi-Species Chemistry and Nonequilibrium Ionization and Cooling
• Galaxy Simulation with Dust Formation and Destruction
• Simulating realistic self-interacting dark matter models including small and large-angle scattering
• Anisotropic thermal conduction in galaxy clusters with MHD in Gadget
• What determines the grain size distribution in galaxies?
• Astrophysical Tests of Dark Matter Self-Interactions
• The importance of black hole repositioning for galaxy formation simulations
• Enforcing dust mass conservation in 3D simulations of tightly-coupled grains with the Phantom SPH code
• Asymptotically stable numerical method for multispecies momentum transfer: gas and multifluid-dust test suite and implementation in FARGO3D
• INAF Trieste Astronomical Observatory Information Technology Framework
• Enrichment of the hot intracluster medium: numerical simulations
• Shock waves in the magnetized cosmic web: the role of obliquity and cosmic-ray acceleration
• Beyond Diffusion: A Generalized Mean-Field Theory of Turbulent Dust Transport in Protoplanetary Disks

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