Artículo
The Uchuu Simulations: data release 1 and dark matter halo concentrations
Ishiyama, Tomoaki; Prada, Francisco; Klypin, Anatoly A; Sinha, Manodeep; Metcalf, R. Benton.; Jullo, Eric; Altieri, Bruno; Cora, Sofia Alejandra
; Croton, Darren; de la Torre, Sylvain; Millán-Calero, David E; Oogi, Taira; Ruedas, José; Vega Martínez, Cristian Antonio
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
06/2021
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Monthly Notices of the Royal Astronomical Society
ISSN:
0035-8711
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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 h-1Gpc, with particle mass 3.27x10^8 h-1Msun. The highest resolution simulation, Shin-Uchuu, consists of 262 billion (6400^3) particles in a box of side-length 140 h-1Mpc, with particle mass 8.97x10^5 h-1Msun. Combining these simulations we can follow the evolution of dark matter halos and subhalos spanning those hosting dwarf galaxies to massive galaxy clusters across an unprecedented volume. In this first paper, we present basic statistics, dark matter power spectra, and the halo and subhalo mass functions, which demonstrate the wide dynamic range and superb statistics of theUchuu suite. From an analysis of the evolution of the power spectra we conclude that our simulations remain accurate from the Baryon Acoustic Oscillation scale down to the very small. We also provide parameters of a mass-concentration model, which describes the evolution of halo concentration and reproduces our simulation data to within 5 per cent for halos with masses spanning nearly eight orders of magnitude at redshift 0 0.5, whereas no upturn is detected at z < 0.5.We make publicly available various N-body products as part of Uchuu Data Release 1 on the Skies & Universes sitey. Future releases will include gravitational lensing maps and mock galaxy, X-ray cluster, and active galactic nuclei catalogues.
Palabras clave:
cosmology: theory
,
methods: numerical
,
Galaxy: structure
,
dark matter
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IALP)
Articulos de INST.DE ASTROFISICA LA PLATA
Articulos de INST.DE ASTROFISICA LA PLATA
Citación
Ishiyama, Tomoaki; Prada, Francisco; Klypin, Anatoly A; Sinha, Manodeep; Metcalf, R. Benton.; et al.; The Uchuu Simulations: data release 1 and dark matter halo concentrations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 506; 3; 6-2021; 4210–4231
Compartir
Altmétricas