Voids and filaments
نویسندگان
چکیده
منابع مشابه
The Universal Size Distribution of the Mini-filaments in Voids
The size distribution of the mini-filaments in voids has been derived from the Millennium Run halo catalogs at redshifts z = 0, 0.5, 1 and 2. It is assumed that the primordial tidal field originated anisotropy in the distribution of the void halos which resulted in the presence of the mini-filaments in the void regions ad that the mini-filaments in the voids are pristine without being modified ...
متن کاملProperties of Dark Matter Haloes in Clusters, Filaments, Sheets and Voids
Using a series of high-resolution N-body simulations of the concordance cosmology we investigate how the formation histories, shapes and angular momenta of dark-matter haloes depend on environment. We first present a classification scheme that allows to distinguish between haloes in clusters, filaments, sheets and voids in the large-scale distribution of matter. This method (which goes beyond a...
متن کاملThe Evolution of Dark Matter Halo Properties in Clusters, Filaments, Sheets and Voids
We use a series of high-resolution N-body simulations of the concordance cosmology to investigate the redshift evolution since z = 1 of the properties and alignment with the large-scale structure of haloes in clusters, filaments, sheets and voids. We find that: (i) Once a rescaling of the halo mass with M∗(z), the typical mass scale collapsing at redshift z, is performed, there is no further si...
متن کاملShape anisotropy and Voids
Gauri R. Pradhan, ∗ Sagar A. Pandit, † Anil D. Gangal, and V. Sitaramam ‡ Department of Physics, University of Pune, Pune 411 007, India 2 Physical Research Laboratory, Ahmedabad 380 009, India Department of Biotechnology, University of Pune, Pune 411 007, India Abstract Numerical simulations on a 2-dimensional model system showed that voids are induced primarily due to shape anisotropy in bina...
متن کاملSimulating Voids
We present a novel method for simulation of the interior of large cosmic voids, suitable for study of the formation and evolution of objects lying within such regions. Following Birkhoff’s theorem, void regions dynamically evolve as universes with cosmological parameters that depend on the underdensity of the void. We derive the values of ΩM , ΩΛ, and H0 that describe this evolution. We examine...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1984
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/206.1.1p