The FLAMINGO simulations data release

Helly, JC, McGibbon, RJ, Schaye, J, Schaller, M, McDonald, W, Braspenning, J, Broxterman, JC, Costello, EE, Elbers, W, Forouhar Moreno, VJ, Frenk, CS, Jenkins, A, Kugel, R, McCarthy, IG ORCID: 0000-0002-1286-483X, Salcido, J, van Daalen, MP, Vandenbroucke, B and Yang, T (2026) The FLAMINGO simulations data release. Astronomy and Computing, 57. ISSN 2213-1337

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Abstract

We describe the public release of >2.3 petabytes of data from the flamingo cosmological simulations. The suite consists of hydrodynamical simulations that include radiative cooling, star formation, stellar mass loss and the resulting chemical enrichment, supernova feedback, and two implementations of AGN feedback. Neutrinos are simulated explicitly using particles. Data products include snapshots, halo and galaxy catalogues, HEALPix all-sky lightcone maps, particle data for lightcone maps, and power spectra. The flamingo set includes 22 hydrodynamical simulations. In addition, there are 16 gravity-only simulations, including the10 0803 particles flamingo-10k run, with initial conditions that match those of the corresponding hydrodynamical runs. The fiducial hydrodynamical simulations span three numerical resolutions that have each been calibrated to reproduce the present-day galaxy stellar mass function and gas fractions in low-redshift clusters. Other simulations systematically vary the galaxy stellar mass function, cluster gas fractions, cosmology (including neutrino masses), and/or the nature of dark matter, in volumes of 1 cGpc3. The release includes hitherto unpublished simulations that use extra dark matter particles. While we provide a facility for downloading complete simulation outputs, we recognize that for many users this will not be possible due to limited local storage or network bandwidth. We implement a web service that enables users to explore available outputs and selectively download datasets or parts of datasets.

Item Type:	Article
Uncontrolled Keywords:	Cosmology: theory; Large-scale structure of Universe; Galaxies: clusters: general; Galaxies: clusters: intracluster medium; Galaxies: formation; 5106 Nuclear and Plasma Physics; 5107 Particle and High Energy Physics; 51 Physical Sciences; 5106 Nuclear and Plasma Physics; 5107 Particle and High Energy Physics; 51 Physical Sciences; 0201 Astronomical and Space Sciences; 0801 Artificial Intelligence and Image Processing; 0803 Computer Software; 4601 Applied computing; 5101 Astronomical sciences
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Divisions:	Astrophysics Research Institute
Publisher:	Elsevier
Date of acceptance:	22 June 2026
Date of first compliant Open Access:	5 November 2026
Date Deposited:	05 Nov 2026 14:57
Last Modified:	05 Nov 2026 14:57
DOI or ID number:	10.1016/j.ascom.2026.101159
URI:	https://researchonline.ljmu.ac.uk/id/eprint/29833

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