ASOHF：一种新的自适应球形高密度晕探测器
ASOHF: a new adaptive spherical overdensity halo finder
摘要：
我们提出并测试了一种新的光晕探测器的基础上的球形过密度（SO）方法。这种新的自适应球形高密度晕探测器（ASOHF）能够识别暗物质晕及其子结构（subhaloes）的分析模拟所允许的尺度。该代码是专门为自适应网格细化宇宙学代码而设计的，尽管它可以用作N体代码的独立晕轮查找器。它已被优化的目的是建立合并树的光环。为了验证这种新工具的可行性，我们开发了一套床测试，使我们能够估计查找器的性能。最后，我们应用晕发现者的宇宙学模拟和比较所得到的结果，由其他知名的公开可用的晕发现者。
英文摘要：
We present and test a new halo finder based on the spherical overdensity (SO) method. This new adaptive spherical overdensity halo finder (ASOHF) is able to identify dark matter haloes and their substructures (subhaloes) down to the scales allowed by the analysed simulations. The code has been especially designed for the adaptive mesh refinement cosmological codes, although it can be used as a stand-alone halo finder for N-body codes. It has been optimised for the purpose of building the merger tree of the haloes. In order to verify the viability of this new tool, we have developed a set of bed tests that allows us to estimate the performance of the finder. Finally, we apply the halo finder to a cosmological simulation and compare the results obtained to those given by other well known publicly available halo finders.
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