Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5134
Title: Merging tree algorithm of growing voids in self-similar and CDM models
Authors: Russell, Esra
Keywords: Analytical
Cosmology
Large
Methods
Scale structure of universe
Issue Date: Dec-2013
Publisher: Oxford University Press
Source: Russell, E. (2013). Merging tree algorithm of growing voids in self-similar and CDM models. Monthly Notices of the Royal Astronomical Society, 436(4), 3525-3546. doi:10.1093/mnras/stt1830
Abstract: Observational studies show that voids are prominent features of the large-scale structure of the present-day Universe. Even though their emerging from the primordial density perturbations and evolutionary patterns differ from dark matter haloes, N-body simulations and theoretical models have shown that voids also merge together to form large void structures. In this study, following Sheth & van de Weygaert, we formulate an analytical approximate description of the hierarchical void evolution of growing voids by adopting the halo merging algorithm given by Lacey & Cole in the Einstein de Sitter (EdS) Universe. To do this, we take into account the general volume distribution of voids which consists of two main void processes: merging and collapsing.We show that the volume distribution function can be reduced to a simple form, by neglecting the collapsing void contribution since the collapse process is negligible for largesize voids. Therefore, the void volume fraction has a contribution only from growing voids. This algorithm becomes the analogue of the halo merging algorithm. Based on this growing void distribution, we obtain the void merging algorithm in which we define and formulate void merging and absorption rates, as well as void size and redshift survival probabilities and also failure rates in terms of the self-similar and currently favoured dark-energy-dominated cold dark matter models in the EdS Universe.
URI: https://doi.org/10.1093/mnras/stt1830
http://hdl.handle.net/11147/5134
ISSN: 0035-8711
1365-2966
0035-8711
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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