论文标题
Sejong Suite：宇宙学水动力学模拟，具有大量的中微子，深色辐射和温暖的暗物质
The Sejong Suite: Cosmological Hydrodynamical Simulations with Massive Neutrinos, Dark Radiation, and Warm Dark Matter
论文作者
论文摘要
我们介绍了Sejong Suite，这是一系列最先进的高分辨率宇宙学水动力学模拟，涵盖了各种宇宙学和天体物理参数，主要开发用于建模Lyman-Alpha（Lya）森林。该套件分为三个主要类别（网格套件，支持套件和系统套件），以解决不同的科学目标。采用基于粒子的实现，我们遵循气体的演变，暗物质（冷和温暖），大量中微子和深色辐射，并考虑了几种盒子大小和颗粒数的组合。借助其他增强技术，我们能够在A（100 mpc/h）^3盒尺寸中达到高达3x3328^3 = 1,100亿个颗粒的等效分辨率，非常适合当前和将来的调查（例如Eboss，Desi）。明显的是，我们首次模拟了延长的混合场景，描述了温暖的暗物质，中微子和深色辐射的综合作用，并通过考虑中微子质量分裂而始终如一地建模。除了为所有所考虑的模型以DZ = 0.2的间隔提供从z = 5.0到z = 2.0的多组分快照外，我们在相同的z范围和扩展参数空间中生产了超过2.88亿lya串。串联非常适合Lya森林科学研究，绘制高$ Z $ cosmic Web以及问题与通用关系和偏见，以及量化Baryons在小规模上的关键作用。我们还对关注物质和通量统计的套件进行了首次分析，并表明我们能够准确地将1D通量功率谱降低到尺度k = 0.06 [s/km]，并由最近的高分辨率准数据映射，以及Intergalactic介质的热史。此处描述的仿真和产品将逐步提供。
We present the Sejong Suite, an extensive collection of state-of-the-art high-resolution cosmological hydrodynamical simulations spanning a variety of cosmological and astrophysical parameters, primarily developed for modeling the Lyman-Alpha (LyA) forest. The suite is organized into three main categories (Grid Suite, Supporting Suite, and Systematics Suite), addressing different science targets. Adopting a particle-based implementation, we follow the evolution of gas, dark matter (cold and warm), massive neutrinos, and dark radiation, and consider several combinations of box sizes and number of particles. With additional enhancing techniques, we are able to reach an equivalent resolution up to 3x3328^3=110 billion particles in a (100 Mpc/h)^3 box size, ideal for current and future surveys (e.g., eBOSS, DESI). Noticeably, for the first time, we simulate extended mixed scenarios describing the combined effects of warm dark matter, neutrinos, and dark radiation, modeled consistently by taking into account the neutrino mass splitting. In addition to providing multicomponent snapshots from z=5.0 to z=2.0 in intervals of dz=0.2 for all of the models considered, we produced over 288 million LyA skewers in the same z-range and extended parameter space. The skewers are well suited for LyA forest science studies, for mapping the high-$z$ cosmic web and the matter-to-flux relation and bias, and for quantifying the critical role of baryons at small scales. We also present a first analysis of the suite focused on the matter and flux statistics, and show that we are able to accurately reproduce the 1D flux power spectrum down to scales k=0.06 [s/km] as mapped by recent high-resolution quasar data, as well as the thermal history of the intergalactic medium. The simulations and products described here will be progressively made available.
