THE SPINE OF THE COSMIC WEB

被引:125
作者
Aragon-Calvo, Miguel A. [1 ]
Platen, Erwin [2 ]
van de Weygaert, Rien [2 ]
Szalay, Alexander S. [1 ]
机构
[1] Johns Hopkins Univ, Baltimore, MD 21218 USA
[2] Univ Groningen, Kapteyn Inst, NL-9700 AV Groningen, Netherlands
关键词
cosmology: theory; large-scale structure of universe; methods: numerical; surveys; FILAMENTS; MORPHOLOGY; SKELETON; EVOLUTION; GALAXIES; CLUSTERS; ALIGNMENT; SHEETS; FIELDS; VOIDS;
D O I
10.1088/0004-637X/723/1/364
中图分类号
P1 [天文学];
学科分类号
0704 ;
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.
引用
收藏
页码:364 / 382
页数:19
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