Record Details

Zeldovich pancakes at redshift zero: the equilibration state and phase-space properties

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Zeldovich pancakes at redshift zero: the equilibration state and phase-space properties
 
Creator WADEKAR, D
HANSEN, SH
 
Subject DARK-MATTER HALOES
LARGE-SCALE STRUCTURE
COSMIC WEB
GRAVITATIONAL COLLAPSE
FILAMENTS
CLUSTERS
UNIVERSE
SHEETS
CLASSIFICATION
SIMULATIONS
methods: analytical
methods: numerical
galaxies: clusters: general
large-scale structure of Universe
 
Description One of the components of the cosmic web are sheets, which are commonly referred to as Zeldovich pancakes. These are structures which have only collapsed along one dimension, as opposed to filaments or galaxies and clusters of galaxies, which have collapsed along two or three dimensions. These pancakes have recently received renewed interest, since they have been shown to be useful tools for an independent method to determine galaxy cluster masses. We consider sheet-like structures resulting from cosmological simulations, which were previously used to establish the cluster-mass determination method, and we show through their level of equilibration, that these structures have indeed only collapsed along the one dimension. We also extract the density profiles of these pancake, which agrees acceptably well with theoretical expectations. We derive the observable velocity distribution function analytically by generalizing the Eddington method to one dimension, and we compare with the distribution function from the numerical simulation.
 
Publisher OXFORD UNIV PRESS
 
Date 2016-01-15T08:26:29Z
2016-01-15T08:26:29Z
2015
 
Type Article
 
Identifier MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 447(2)1333-1340
0035-8711
1365-2966
http://dx.doi.org/10.1093/mnras/stu2418
http://dspace.library.iitb.ac.in/jspui/handle/100/18161
 
Language en