Top-Hat Spherical collapse with clustering dark energy. I. Radius evolution and critical contrast density

被引：2

作者：

Herrera, D. ^{[1
]}

Waga, I. ^{[1
]}

Joras, S. E. ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Fis, CP 68528, BR-21941972 Rio De Janeiro, RJ, Brazil

来源：

PHYSICS OF THE DARK UNIVERSE | 2019年 / 26卷

关键词：

COSMOLOGICAL CONSEQUENCES; LAMBDA;

D O I：

10.1016/j.dark.2019.100335

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Understanding the influence of dark energy on the formation of structures is currently a major challenge in Cosmology, since it can distinguish otherwise degenerated viable models. In this work we consider the Top-Hat Spherical-Collapse (SC) model with dark energy, which can partially (or totally) cluster, according to a free parameter gamma. The lack of energy conservation has to be taken into account accordingly, as we will show. We determine characteristic quantities for the SC model, such as the critical contrast density and radius evolution, with particular emphasis on their dependence on the clustering parameter gamma. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：8

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