期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 448, 期 4, 页码 2987-3000出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv138
关键词
methods: numerical; galaxies: statistics; dark matter; large-scale structure of Universe
资金
- MareNostrum supercomputer (BSC-CNS) [AECT-2008-1-0009, 2008-2-0011, 2008-3-0010, 2009-1-0009, 2009-2-0013, 2009-3-0013]
- Port d'Informacio Cientifica
- European Commission Marie Curie Initial Training Network CosmoComp [PITN-GA-2009 238356]
- Spanish Ministerio de Ciencia e Innovacion (MICINN) [200850I176, AYA-2009-13936, AYA-2012-39620, AYA-2012-39559]
- Consolider-Ingenio [CSD2007-00060]
- Generalitat de Catalunya [SGR-1398]
- Ramon y Cajal MICINN programme
We present a new N-body simulation from the Marenostrum Institut de Ciencies de l'Espai (MICE) collaboration, the MICE Grand Challenge (MICE-GC), containing about 70 billion darkmatter particles in a (3 Gpc h(-1))(3) comoving volume. Given its large volume and fine spatial resolution, spanning over five orders of magnitude in dynamic range, it allows an accurate modelling of the growth of structure in the universe from the linear through the highly nonlinear regime of gravitational clustering. We validate the dark matter simulation outputs using 3D and 2D clustering statistics, and discussmass-resolution effects in the non-linear regime by comparing to previous simulations and the latest numerical fits. We show that the MICE-GC run allows for a measurement of the BAO feature with per cent level accuracy and compare it to state-of-the-art theoretical models. We also use sub-arcmin resolution pixelized 2D maps of the dark matter counts in the lightcone to make tomographic analyses in real and redshift space. Our analysis shows the simulation reproduces the Kaiser effect on large scales, whereas we find a significant suppression of power on non-linear scales relative to the real space clustering. We complete our validation by presenting an analysis of the three-point correlation function in this and previous MICE simulations, finding further evidence for mass-resolution effects. This is the first of a series of three papers in which we present the MICE-GC simulation, along with a wide and deep mock galaxy catalogue built from it. This mock is made publicly available through a dedicated web portal, http://cosmohub.pic.es.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据