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Despite containing about a half of the total matter in the Universe, at most wavelengths the filamentary structure of the cosmic web is difficult to observe. In this work, we use large unigrid cosmological simulations to investigate how the…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-17 Claudio Gheller , Franco Vazza , Marcus Brueggen , Mehmet Alpaslan , Benne Willem Holwerda , Andrew Hopkins , Jochen Liske

We investigated the widths and profiles of cosmic filaments using the IllustrisTNG simulations. Filaments were identified with DisPerSE, using galaxy samples in simulations as input. Since the width of an individual filament can vary…

Cosmology and Nongalactic Astrophysics · Physics 2025-09-18 Qi-Rui Yang , Weishan Zhu , GuangYao Yu , Jian-Feng Mo , Yi Zheng , Long-Long Feng

A large portion of the baryons at low redshifts are still missing from detection. Most of the missing baryons are believed to reside in large scale cosmic filaments. Understanding the distribution of baryons in filaments is crucial for the…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-09 Weishan Zhu , Fupeng Zhang , Long-Long Feng

The way in which the large-scale cosmic environment affects galactic properties is not yet understood. Dark matter halos, which embed galaxies, initially evolve following linear theory. Their subsequent evolution is driven by non-linear…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-20 Anatole Storck , Corentin Cadiou , Oscar Agertz , Daniela Galárraga-Espinosa

Hydrodynamical cosmological simulations are ideal laboratories where the evolution of the cosmic web can be studied. This allows for easier insight into the nature of the filaments. We investigate how the intrinsic properties of filaments…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-02 Samo Ilc , Dunja Fabjan , Elena Rasia , Stefano Borgani , Klaus Dolag

We present a new method to identify large scale filaments and apply it to a cosmological simulation. Using positions of haloes above a given mass as node tracers, we look for filaments between them using the positions and masses of all the…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-22 Roberto E. Gonzalez , Nelson E. Padilla

Using galaxies from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7) along with haloes from the dark matter only constrained ELUCID (Exploring the Local Universe with the reConstructed Initial Density field) simulation, we examine the…

Cosmology and Nongalactic Astrophysics · Physics 2025-04-29 Youcai Zhang , Xiaohu Yang , Hong Guo , Peng Wang , Feng Shi

We investigate the impact of cosmic filaments on the gas accretion rate, $\dot{M}_{\rm{gas}}$, of dark matter halos in filaments, based on cosmological hydrodynamic simulation. We find that for halos less massive than $10^{12.0}\…

Astrophysics of Galaxies · Physics 2022-01-26 Weishan Zhu , Fupeng Zhang , Long-Long Feng

We make use of a high-resolution zoom-in hydrodynamical simulation to investigate the impact of filaments on galaxy formation in their residing dark matter haloes. A method based on the density field and the Hoshen-Kopelman algorithm is…

Astrophysics of Galaxies · Physics 2019-02-25 Shihong Liao , Liang Gao

We present a study of the evolution of cosmic filaments across redshift with an emphasis on some important properties: filament lengths, growth rates, and radial profiles of galaxy densities. Following an observation-driven approach, we…

In the context of the cosmological and constrained ELUCID simulation, this study explores the statistical characteristics of filaments within the cosmic web, focussing on aspects such as the distribution of filament lengths and their radial…

Cosmology and Nongalactic Astrophysics · Physics 2024-08-21 Youcai Zhang , Hong Guo , Xiaohu Yang , Peng Wang

Using a new parallel algorithm implemented within the VisIt framework, we analysed large cosmological grid simulations to study the properties of baryons in filaments. The procedure allows us to build large catalogues with up to $\sim 3…

Cosmology and Nongalactic Astrophysics · Physics 2015-09-09 Claudio Gheller , Franco Vazza , Jean Favre , Marcus Brüggen

We study weak lensing properties of filaments that connect clusters of galaxies through large cosmological $N$-body simulations. We select 4639 halo pairs with masses higher than $10^{14}h^{-1}\mathrm{M}_\odot$ from the simulations and…

Cosmology and Nongalactic Astrophysics · Physics 2014-03-27 Yuichi Higuchi , Masamune Oguri , Masato Shirasaki

The connections among galaxies, the dark matter halos where they form and the properties of the large-scale Cosmic Web still need to be completely disentangled. We use the cosmological hydrodynamical simulation TNG100 of the IllustrisTNG…

In this paper, we exploit a large suite of {\enzo} cosmological magneto-hydrodynamical simulations adopting uniform mesh resolution, to investigate the properties of cosmic filaments under different baryonic physics and magnetogenesis…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-10 Claudio Gheller , Franco Vazza

This paper presents an updated scaling relation between the optical luminosity density (LD) of galaxies in the $r$ band and the density of the warm-hot intergalactic medium (WHIM) in cosmic filaments, using the high-resolution EAGLE…

Cosmology and Nongalactic Astrophysics · Physics 2022-04-06 Patrick Holt , Toni Tuominen , Jukka Nevalainen , Massimiliano Bonamente , Teet Kuutma , Pekka Heinämäki , Elmo Tempel

Clusters, filaments, sheets and voids are the building blocks of the cosmic web. In this study, we present and compare two distinct algorithms for finding cosmic filaments and sheets, a task which is far less well established than the…

Astrophysics of Galaxies · Physics 2009-11-13 Youcai Zhang , Xiaohu Yang , Andreas Faltenbacher , Volker Springel , Weipeng Lin , Huiyuan Wang

We study the effects of the local environmental density and the cosmic web environment (filaments, walls, and voids) on key properties of dark matter halos using the Bolshoi-Planck LCDM cosmological simulation. The z = 0 simulation is…

We report on the possibility of studying the proprieties of cosmic diffuse baryons by studying self-gravitating clumps and filaments connected to galaxy clusters. While filaments are challenging to detect with X-ray observations, the higher…

Cosmology and Nongalactic Astrophysics · Physics 2021-10-04 M. Angelinelli , S. Ettori , F. Vazza , T. W. Jones

The cold dark matter model predicts that dark matter haloes are connected by filaments. Direct measurements of the masses and structure of these filaments are difficult, but recently several studies have detected these dark-matter-dominated…

Cosmology and Nongalactic Astrophysics · Physics 2020-08-25 Tianyi Yang , Michael J. Hudson , Niayesh Afshordi
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