Data Access
Simulation data products and catalogues from the Manticore project, freely available for scientific use.
Prominent Clusters in the Local Universe
McAlpine et al. (2025) — The Manticore Project IPosterior properties of 14 prominent galaxy clusters (e.g. Virgo, Coma, Perseus) within 200 Mpc, including sky position, distance, halo mass (M200, M500), size, and peculiar velocity. All properties are derived from 80 constrained N-body realizations of the local Universe, so every cluster is self-consistently embedded in the same large-scale structure and uncertainties from the initial conditions are naturally propagated.
Cluster Data
Median values with 25th–75th percentile ranges across the posterior ensemble.
Coordinates X, Y, Z are in the equatorial simulation frame. Subtract observer position (500, 500, 500 Mpc) to convert to observed frame.
Posterior Cluster Catalogue
McAlpine et al. (2025) — The Manticore-Local Cluster CatalogueA catalogue of 401 posterior cluster associations in the local Universe, identified by clustering central haloes with M200 ≥ 1014 M⊙ that recur at consistent positions across the 80 constrained N-body realizations. Each association provides posterior distributions for position, mass (M200, M500), size, velocity, and concentration in an observer-centric equatorial frame. Validated against stacked Planck PR4 tSZ detections and cross-matched with MCXC-II and eROSITA X-ray catalogues. A stricter selection of 162 associations with tighter positional and mass scatter is also provided.
Posterior Void Catalogue
Malandrino et al. (2025) — 100 high-significance voids in the Local UniverseA Bayesian posterior catalogue of 100 cosmic voids in the nearby Universe, built by running the VIDE void finder on 50 independent Manticore-Local realizations and clustering recurring void centers. For each void we provide posterior distributions for its center (α, δ, distance) and effective radius, plus morphology via a Voronoi-overlap "cloud" representation.
Detections meet a strict 5σ acceptance criterion (chance probability < 6×10-7), ensuring a high-purity sample for cosmology and environment studies.
Velocity and Density Fields
McAlpine et al. (2025) — The Manticore Project I
Gridded N = 2563 fields of the L = 1000 Mpc parent domain
(cell size 3.9 Mpc), generated at z=0 for all 80 Manticore-Local realizations.
Simulation particles are mapped to the grid using an SPH kernel to produce the
density field and the momentum field (ρ v).
Fields can be downloaded using the manticore_data Python package,
as demonstrated in the tutorial notebook.
Posterior mean velocity field (left) and density field (right)
Coming Soon
The Manticore-Deep data products are currently in preparation. Check back soon for updates.