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49FFF73A-F8DD-4541-B9C5-A6B88FB04A26

The halo bias inside cosmic voids

Giovanni Verza, Carmelita Carbone, Alessandro Renzi
arXiv:2207.04039

Submitted on 8 July 2022

Abstract

The bias of dark matter halos and galaxies is a crucial quantity in many cosmological analyses. In this work, using large cosmological simulations, we explore the halo mass function and halo bias within cosmic voids. For the first time to date, we show that they are scale-dependent along the void profile, and provide a predictive theoretical model of both the halo mass function and halo bias inside voids, recovering for the latter and 1% accuracy against simulated data. These findings may help shed light on the dynamics of halo formation within voids and improve the analysis of several void statistics from ongoing and upcoming galaxy surveys.

Preprint

Comment: 8 pages, 4 figs

Subject: Astrophysics - Cosmology and Nongalactic Astrophysics

URL: https://arxiv.org/abs/2207.04039