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Upcoming cosmological surveys have the potential to reach groundbreaking discoveries on multiple fronts, including the neutrino mass, dark energy, and inflation. Most of the key science goals require the joint analysis of datasets from…

Cosmology and Nongalactic Astrophysics · Physics 2025-05-12 Adrian E. Bayer , Yici Zhong , Zack Li , Joseph DeRose , Yu Feng , Jia Liu

The Dark Sky Simulations are an ongoing series of cosmological N-body simulations designed to provide a quantitative and accessible model of the evolution of the large-scale Universe. Such models are essential for many aspects of the study…

Cosmology and Nongalactic Astrophysics · Physics 2014-07-10 Samuel W. Skillman , Michael S. Warren , Matthew J. Turk , Risa H. Wechsler , Daniel E. Holz , P. M. Sutter

$N$-body cosmological simulations are an essential tool to understand the observed distribution of galaxies. We use the MultiDark simulation suite, run with the Planck cosmological parameters, to revisit the mass and velocity functions. At…

Cosmology and Nongalactic Astrophysics · Physics 2017-05-16 Johan Comparat , Francisco Prada , Gustavo Yepes , Anatoly Klypin

We present two large cosmological N-body simulations, called Horizon Run 2 (HR2) and Horizon Run 3 (HR3), made using 6000^3 = 216 billions and 7210^3 = 374 billion particles, spanning a volume of (7.200 Gpc/h)^3 and (10.815 Gpc/h)^3,…

Cosmology and Nongalactic Astrophysics · Physics 2012-01-12 Juhan Kim , Changbom Park , Graziano Rossi , Sang Min Lee , J. Richard Gott

We describe the Outer Rim cosmological simulation, one of the largest high-resolution N-body simulations performed to date, aimed at promoting science to be carried out with large-scale structure surveys. The simulation covers a volume of…

How many simulations do we need to train machine learning methods to extract information available from summary statistics of the cosmological density field? Neural methods have shown the potential to extract non-linear information…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-26 Anirban Bairagi , Benjamin Wandelt , Francisco Villaescusa-Navarro

We introduce a new set of large N-body runs, the MICE simulations, that provide a unique combination of very large cosmological volumes with good mass resolution. They follow the gravitational evolution of ~ 8.5 billion particles (2048^3)…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Martin Crocce , Pablo Fosalba , Francisco J. Castander , Enrique Gaztanaga

We present a public data release of halo catalogs from a suite of 125 cosmological $N$-body simulations from the Abacus project. The simulations span 40 $w$CDM cosmologies centered on the Planck 2015 cosmology at two mass resolutions,…

Cosmology and Nongalactic Astrophysics · Physics 2018-06-13 Lehman H. Garrison , Daniel J. Eisenstein , Douglas Ferrer , Jeremy L. Tinker , Philip A. Pinto , David H. Weinberg

I present a large set of high resolution simulations, called CosmicGrowth Simulations, which were generated with either 8.6 billion or 29 billion particles. As the nominal cosmological model that can match nearly all observations on…

Cosmology and Nongalactic Astrophysics · Physics 2018-08-28 Y. P. Jing

We present the evolution of dark matter halos in six large cosmological N-body simulations, called the $\nu^2$GC (New Numerical Galaxy Catalog) simulations on the basis of the LCDM cosmology consistent with observational results obtained by…

Cosmology and Nongalactic Astrophysics · Physics 2016-04-06 Tomoaki Ishiyama , Motohiro Enoki , Masakazu A. R. Kobayashi , Ryu Makiya , Masahiro Nagashima , Taira Oogi

We intend to make sets of cosmological simulations available, with a large number of different output times that may be placed side-by-side to produce a complete history of the universe stretching back to high redshift. Currently there is…

Astrophysics · Physics 2007-05-23 P. A. Thomas , H. M. P. Couchman , F. R. Pearce

We have simulated the formation and evolution of large-scale structure in the universe, for 68 different COBE-normalized cosmological models. For each cosmological model, we have performed between 1 and 3 simulations, for a total of 160…

Astrophysics · Physics 2007-05-23 Hugo Martel , Richard Matzner

The MareNostrum Universe is one of the biggest SPH cosmological simulations done so far. It contains more than 2 billion particles (2 times 1024^3) in a 500 Mpc/h cubic volume. This simulation has been performed on the MareNostrum…

Astrophysics · Physics 2007-05-23 Stefan Gottloeber , G. Yepes , C. Wagner , R. Sevilla

We introduce the Ultramarine simulation, an extremely large $N$-body simulation of the structure formation and evolution to redshift 5.5 at which cosmic reionization was just completed. The simulation evolves 2.1 trillion particles within a…

Cosmology and Nongalactic Astrophysics · Physics 2022-11-23 Qiao Wang , Liang Gao , Cheng Meng

In this paper we describe the set of ``New Worlds Simulations'', three very large cosmology simulations, Qo'noS, Vulcan, and Ferenginar, that were carried out on the Summit supercomputer with the Hardware/Hybrid Cosmology Code, HACC. The…

Cosmology and Nongalactic Astrophysics · Physics 2024-06-12 Katrin Heitmann , Thomas Uram , Nicholas Frontiere , Salman Habib , Adrian Pope , Silvio Rizzi , Joe Insley

The Last Journey is a large-volume, gravity-only, cosmological N-body simulation evolving more than 1.24 trillion particles in a periodic box with a side-length of 5.025Gpc. It was implemented using the HACC simulation and analysis…

Particle-Mesh (PM) codes are still very useful tools for testing predictions of cosmological models in cases when extra high resolution is not very important. We release for public use a cosmological PM N-body code. We provide a complete…

Astrophysics · Physics 2007-05-23 Anatoly Klypin , Jon Holtzman

We have performed the first-ever numerical N- body simulation of the full observable universe (DEUS "Dark Energy Universe Simulation" FUR "Full Universe Run"). This has evolved 550 billion particles on an Adaptive Mesh Refinement grid with…

We introduce the Uchuu suite of large high-resolution cosmological $N$-body simulations. The largest simulation, named Uchuu, consists of 2.1 trillion ($12800^3$) dark matter particles in a box of side-length 2.0 Gpc/h, with particle mass…

Understanding of the structure evolution in the Universe has been greatly advanced with a rapid progress in high-resolution cosmological simulations. In this contribution, we report a new set of cosmological simulations with $512^3$ ($\sim…

Astrophysics · Physics 2007-05-23 Y. P. Jing , Yasushi Suto
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