宇宙之网的脊柱
The Spine of the Cosmic Web
摘要：
我们提出的SpineWeb框架的拓扑分析的宇宙网络和识别其墙壁，细丝和集群节点。SpineWeb方法在对宇宙密度场进行分水岭分割的基础上，调用分水岭盆地边界的局部邻接属性，追踪密度场中的临界点及其定义的分界线。在物质分布上，将分界线分为壁和脊、细丝网络和节点。测试的启发式Voronoi模型的方法产生了突出的结果。在讨论了测试结果之后，我们将SpineWeb方法应用于一组宇宙学N体模拟。后者说明了研究宇宙网络的结构和动力学的潜力。
英文摘要：
We present the SpineWeb framework for the topological analysis of the Cosmic Web and the identification of its walls, filaments and cluster nodes. Based on the watershed segmentation of the cosmic density field, the SpineWeb method invokes the local adjacency properties of the boundaries between the watershed basins to trace the critical points in the density field and the separatrices defined by them. The separatrices are classified into walls and the spine, the network of filaments and nodes in the matter distribution. Testing the method with a heuristic Voronoi model yields outstanding results. Following the discussion of the test results, we apply the SpineWeb method to a set of cosmological N-body simulations. The latter illustrates the potential for studying the structure and dynamics of the Cosmic Web.
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