展开空的层次结构
Unfolding the Hierarchy of Voids
摘要：
我们提出了一个框架的层次识别和表征的基础上的分水岭空洞的研究。层次空洞理论是基于密度场的尺度空间的概括，用来追踪宇宙学空洞的层次性质和结构。在层次结构的每个级别，分水岭变换用于识别该特定比例下的空隙。通过识别相邻层次流域之间的重叠区域，构建层次空洞树。一个层次的Voronoi模型和一组宇宙学模拟的应用程序说明了它的潜力。
英文摘要：
We present a framework for the hierarchical identification and characterization of voids based on the Watershed Void Finder. The Hierarchical Void Finder is based on a generalization of the scale space of a density field invoked in order to trace the hierarchical nature and structure of cosmological voids. At each level of the hierarchy, the watershed transform is used to identify the voids at that particular scale. By identifying the overlapping regions between watershed basins in adjacent levels, the hierarchical void tree is constructed. Applications on a hierarchical Voronoi model and on a set of cosmological simulations illustrate its potential.
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