Constrained simulations of the local universe

在过去的几年里，我们对局部宇宙进行了一系列的约束模拟。我们建议在下一代约束模拟的基础上扩展这项研究。主要重点是解决当地群体有多独特的问题。我们采用约束模拟作为近场宇宙学的数值实验室，使我们能够研究暗物质气体动力学过程的复杂相互作用，并将我们的数值模型与我们的宇宙学邻域的详细观测进行比较。我们计划改进约束随机场的设置，并进行一系列新的局部宇宙模拟，以系统地研究不同的反馈描述以及数值分辨率问题的影响。

Over the past years we have performed a series of constrained simulations of the local universe. We propose to extent this research based on the next generation of constrained simulations. Main focus is to address the question how unique the Local Group is. We employ constrained simulations as a numerical laboratory for near-field cosmological that allows us to study the complex interplay of dark matter an gas dynamical processes and to compare our numerical models with the detailed observations of our cosmological neighborhood. We plan to improve the set-up of constrained random fields and to perform a series of new local universe simulations in order to systematically investigate the effects of different feedback descriptions as well as numerical resolution issues.