Nexus of the Cosmic Web

Дата и время публикации : 2012-11-15T11:18:48Z

Авторы публикации и институты :
Marius Cautun
Rien van de Weygaert
Bernard J. T. Jones
Carlos S. Frenk
Wojcieh A. Hellwing

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 3 pages, 1 figure, Proceedings of the 13th Marcel Grossman Meeting on General Relativity (Stockholm, Sweden, July 1 – 7, 2012), invited talk at the Parallel Session OC4 “New developments in the study of the large scale structure of the Universe”
Первичная категория: astro-ph.CO

Все категории : astro-ph.CO

Краткий обзор статьи: One of the important unknowns of current cosmology concerns the effects of the large scale distribution of matter on the formation and evolution of dark matter haloes and galaxies. One main difficulty in answering this question lies in the absence of a robust and natural way of identifying the large scale environments and their characteristics. This work summarizes the NEXUS+ formalism which extends and improves our multiscale scale-space MMF method. The new algorithm is very successful in tracing the Cosmic Web components, mainly due to its novel filtering of the density in logarithmic space. The method, due to its multiscale and hierarchical character, has the advantage of detecting all the cosmic structures, either prominent or tenuous, without preference for a certain size or shape. The resulting filamentary and wall networks can easily be characterized by their direction, thickness, mass density and density profile. These additional environmental properties allows to us to investigate not only the effect of environment on haloes, but also how it correlates with the environment characteristics.

Category: Physics