Voids and Halos in Voids statistics as a probe of the Expansion History of the Universe

Abstract

Structures in the Universe are arranged into the cosmic web. Distributions, statistics, and evolutions of the structures can be used as probes for cosmological models. We investigate the number density of voids and dark matter halos-in-voids in the Excursion Set Theory (EST). We study the Markov and non-Markov frameworks of EST in both spherical and ellipsoidal collapse models. Afterward, we compare the number density of voids and halos-in-voids in the standard $\Lambda$CDM and the reconstructed model. The reconstructed model is a model-independent reconstruction based on background observations. This work explores the effects of the collapse model barrier in the different EST frameworks on the statistics of voids and the statistics of halos-in-voids. Finally, we find the hint that cosmological models can be distinguished by the number density of halos-in-voids in the $1.0-2.5$ redshift range. The maximum difference is observed in $z\sim 1.9$.

11 pages, 10 figures. Final Version. Accepted for publication in MNRAS

References in corpus (11)

• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
• The Excursion Set Theory of Halo Mass Functions, Halo Clustering, and Halo Growth
• Cosmic Ballet III: halo spin evolution in the cosmic web
• The life and death of cosmic voids
• The Halo Void (Dust) Model of Large Scale Structure
• Structure formation in $f(R)$ gravity: A distinguishing probe between the dark energy and modified gravity
• Void Galaxy Distribution: A Challenge for $\Lambda$CDM
• Exact enumeration approach to first-passage time distribution of non-Markov random walks
• Mass assembly history of dark matter halos in the light of $H_0$ tension

Cited by in corpus (3)

• One-point Statistics in various cosmic environments in the presence of massive neutrinos
• Luminosity Function of Galaxies in Voids: A Modification Inspired by Excursion Set Theory
• Addressing the too-big-to-fail problem and the void phenomenon through a modified initial power spectrum