English
Related papers

Related papers: Voids in cosmological simulations over cosmic time

200 papers

We investigate the structural, photometric, and dynamical evolution of cosmic voids and their galaxy populations from $z=2.09$ to the present, focusing on void size as a key evolutionary parameter. Using void catalogs from four Millennium…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-28 Saeed Tavasoli

We compare the evolution of voids formed under the standard cosmological model and two alternative cosmological models. The two models are a quintessence model ($\phi$CDM) and a Coupled Dark Matter-Dark Energy (CDE) model, both of which…

Cosmology and Nongalactic Astrophysics · Physics 2018-08-01 Eromanga Adermann , Pascal J Elahi , Geraint F Lewis , Chris Power

We investigate the formation, growth, merger history, movement, and destruction of cosmic voids detected via the watershed transform code VIDE in a cosmological N-body dark matter {\Lambda}CDM simulation. By adapting a method used to…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-19 P. M. Sutter , Pascal Elahi , Bridget Falck , Julian Onions , Nico Hamaus , Alexander Knebe , Chaichalit Srisawat , Aurel Schneider

We utilize the Magneticum suite of hydrodynamical simulations to investigate the formation and evolution of cosmic voids from $z = 5.04$ to present day, using cold dark matter and (sub-) halo tracers in high-density samples. This includes…

Cosmology and Nongalactic Astrophysics · Physics 2025-09-10 Nico Schuster , Nico Hamaus , Alice Pisani , Klaus Dolag , Jochen Weller

We study the formation and evolution of voids in the dark matter distribution using various simulations of the popular $\Lambda$ Cold Dark Matter cosmogony. We identify voids by requiring them to be regions of space with a mean overdensity…

Astrophysics · Physics 2009-11-10 Joerg M. Colberg , Ravi K. Sheth , Antonaldo Diaferio , Liang Gao , Naoki Yoshida

Understanding the internal structure and spatial distribution of cosmic voids is crucial when considering them as probes of cosmology. We present recent advances in modeling void density- and velocity-profiles in real space, as well as void…

Cosmology and Nongalactic Astrophysics · Physics 2014-09-29 Nico Hamaus , P. M. Sutter , Benjamin D. Wandelt

Cosmic voids provide a powerful probe of the origin and evolution of structures in the Universe because their dynamics can remain near-linear to the present day. As a result they have the potential to connect large scale structure at late…

Cosmology and Nongalactic Astrophysics · Physics 2020-11-26 Stephen Stopyra , Hiranya V. Peiris , Andrew Pontzen

We present a comparison of void properties between the standard model of cosmology, $\Lambda$ Cold Dark Matter ($\Lambda$CDM), and two alternative cosmological models with evolving and interacting dark sectors: a quintessence model…

Cosmology and Nongalactic Astrophysics · Physics 2017-05-03 Eromanga Adermann , Pascal J. Elahi , Geraint F. Lewis , Chris Power

Cosmic voids in the large-scale structure of the Universe affect the peculiar motions of objects in their vicinity. Although these motions are difficult to observe directly, the clustering pattern of their surrounding tracers in redshift…

Cosmology and Nongalactic Astrophysics · Physics 2015-12-01 Nico Hamaus , P. M. Sutter , Guilhem Lavaux , Benjamin D. Wandelt

We present a simple empirical function for the average density profile of cosmic voids, identified via the watershed technique in $\Lambda$CDM N-body simulations. This function is universal across void size and redshift, accurately…

Cosmology and Nongalactic Astrophysics · Physics 2014-07-09 Nico Hamaus , P. M. Sutter , Benjamin D. Wandelt

Cosmic voids have emerged as powerful probes for cosmology, providing complementary information on the large-scale structure of the universe. We present the first application of a hydrodynamical framework to model the evolution of cosmic…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-23 Tommaso Moretti , Giovanni Verza , Noemi Frusciante , Francesco Pace

We apply the adhesion approximation to study the formation and evolution of voids in the Universe. Our simulations -- carried out using 128$^3$ particles in a cubical box with side 128 Mpc -- indicate that the void spectrum evolves with…

Astrophysics · Physics 2009-10-22 Varun Sahni , B. S. Sathyaprakash , Sergei F. Shandarin

We study the evolution of the cross-correlation between voids and the mass density field - i.e. of void profiles. We show that approaches based on the spherical model alone miss an important contribution to the evolution on large scales of…

Cosmology and Nongalactic Astrophysics · Physics 2018-11-09 Elena Massara , Ravi K. Sheth

We present a systematic analysis of the statistical properties of cosmic voids using galaxies from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7) and subhaloes from the ELUCID constrained simulation. By comparing voids identified in…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-01 Youcai Zhang , Xiaohu Yang , Hong Guo , Peng Wang , Feng Shi

An analysis of voids using cosmological N-body simulations of cold dark matter models is presented. It employs a robust statistics of voids, that was recently applied to discriminate between data from the Las Campanas Redshift Survey and…

Astrophysics · Physics 2009-11-07 S. Arbabi-Bidgoli , V. Mueller

We review and discuss aspects of Cosmic Voids that form the background for our Void Galaxy Survey (see accompanying paper by Stanonik et al.). Following a sketch of the general characteristics of void formation and evolution, we describe…

We present a novel method for simulation of the interior of large cosmic voids, suitable for study of the formation and evolution of objects lying within such regions. Following Birkhoff's theorem, void regions dynamically evolve as…

Astrophysics · Physics 2009-11-10 David M. Goldberg , Michael S. Vogeley

We investigate the properties of one--dimensional flux ``voids'' (connected regions in the flux distribution above the mean flux level) by comparing hydrodynamical simulations of large cosmological volumes with a set of observed…

Astrophysics · Physics 2009-11-13 Matteo Viel , Joerg M. Colberg , Tae-Sun Kim

We study the spherical evolution model for voids in $\Lambda$CDM, where the evolution of voids is governed by dark energy at an earlier time than that for the whole universe or in overdensities. We show that the presence of dark energy…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-17 Vasiliy Demchenko , Yan-Chuan Cai , Catherine Heymans , John A Peacock

Cosmic voids, the large underdense regions of our Universe, have emerged over the past decade as powerful cosmological laboratories: their simple dynamics, sensitivity to local gravitational effects and cosmic expansion, and ability to span…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-22 Sofia Contarini , Giovanni Verza , Alice Pisani
‹ Prev 1 2 3 10 Next ›