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CosmicGrowth Simulations—Cosmological simulations for structure growth studies

  • YiPeng JingEmail author
Article

Abstract

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 for the nominal cosmological model that can match nearly all observations on cosmological scales, I have adopted a flat Cold Dark Matter (CDM) model with a cosmological constant Λ (ACDM). The model parameters have been taken either from the latest result of the WMAP satellite (WMAP ACDM) or from the first year's result of the Planck satellite (Planck ACDM). Six simulations are produced in the ACDM models with two in the Planck model and the others in the WMAP model. In order for studying the non-linear evolution of the clustering, four simulations were also produced with 8.6 billion particles for the scale-free models of an initial power spectrum P(k) ∝ kn with n = 0, −1, −1.5 or −2.0. Furthermore, two radical CDM models (XCDM) are simulated with 8.6 billion particles each. Since the XCDM have some of the model parameters distinct from those of the ACDM models, they must be unable to match the observations, but are very useful for studying how the clustering properties depend on the model parameters. The Friends-of-Friends (FoF) halos were identified for each snapshot and subhalos were produced by the Hierarchical Branch Tracing (HBT) algorithm. These simulations form a powerful database to study the growth and evolution of the cosmic structures both in theory and in observation.

Keywords

galaxy formation structure formation in the Universe cosmology 

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of AstronomyShanghai Jiao Tong UniversityShanghaiChina
  2. 2.IFSA Collaborative Innovation CenterShanghai Jiao Tong UniversityShanghaiChina
  3. 3.Tsung-Dao Lee InstituteShanghai Jiao Tong UniversityShanghaiChina

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