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We present a statistical study of the filamentary structures of the cosmic web in the large hydro-dynamical simulations Illustris-TNG, Illustris, and Magneticum at redshift z=0. We focus on the radial distribution of the galaxy density…

Cosmology and Nongalactic Astrophysics · Physics 2020-09-30 Daniela Galárraga-Espinosa , Nabila Aghanim , Mathieu Langer , Céline Gouin , Nicola Malavasi

We present a novel method for identifying cosmic web filaments using the IllustrisTNG (TNG100) cosmological simulations and investigate the impact of filaments on galaxies. We compare the use of cosmic density field estimates from the…

We use data from the Evolution and Assembly of GaLaxies in their Environment (EAGLE) cosmological simulation to study properties of galaxies in the cosmic web. Galaxies become more redder and form stars at a lower rate relative to their…

Astrophysics of Galaxies · Physics 2020-07-29 Ankit Singh , Smriti Mahajan , J. S. Bagla

Galaxies evolve within the intricate geometry of the cosmic web, yet the distinct roles of its primary components - nodes and filaments remain incompletely understood. Using the EAGLE cosmological hydrodynamical simulation, we investigate…

Astrophysics of Galaxies · Physics 2026-02-25 Suman Sarkar , Biswajit Pandey , Apashanka Das

The impact of cosmic web environments on galaxy properties plays a critical role in understanding galaxy formation. Using the state-of-the-art cosmological simulation IllustrisTNG, we investigate how satellite galaxy abundance differs…

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

Galaxy properties are known to correlate with their location within the cosmic web. However, the role of filaments remains poorly understood, particularly for low-mass galaxies, which are expected to be more sensitive to environmental…

Astrophysics of Galaxies · Physics 2026-05-25 Daria Zakharova , Gabriella De Lucia , Benedetta Vulcani , Lizhi Xie , Stefania Barsanti , Sean McGee

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

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…

Galaxy properties correlate with their position within the cosmic web. While galaxies are observed in an environment today, they may have experienced different environments in the past. The environmental history, linked to pre-processing,…

Astrophysics of Galaxies · Physics 2026-03-25 D. Zakharova , G. De Lucia , B. Vulcani , F. Fontanot , L. Xie

Filaments are elongated structures that connect groups and clusters of galaxies and are visually the striking feature in cosmological maps. In the literature, typically filaments are defined only using galaxies, assuming that these are good…

Astrophysics of Galaxies · Physics 2023-07-12 Daria Zakharova , Benedetta Vulcani , Gabriella De Lucia , Lizhi Xie , Michaela Hirschmann , Fabio Fontanot

We investigate how galaxy pairs are oriented in three dimensions within cosmic filaments using data from the EAGLE simulation. We identify filament spines using DisPerSE and isolate galaxies residing in filamentary environments. Employing a…

Cosmology and Nongalactic Astrophysics · Physics 2025-01-14 Suman Sarkar , Biswajit Pandey

A substantial fraction of the cosmic baryons is expected to hide in the form of diffuse warm-hot intergalactic medium (WHIM), the majority of which resides in the filaments of the Cosmic Web and has proven very difficult to detect due to…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-07 I. Vurm , J. Nevalainen , S. E. Hong , Y. M. Bahé , C. Dalla Vecchia , P. Heinämäki

The matter distribution in the Universe exhibits a rich variety of structures forming the cosmic web. These structures arise from the anisotropic gravitational collapse of primordial density fluctuations and define the pathways along which…

Astrophysics of Galaxies · Physics 2026-01-21 J. A. L. Aguerri , S. Zarattini

We present DisPerSE, a novel approach to the coherent multi-scale identification of all types of astrophysical structures, and in particular the filaments, in the large scale distribution of matter in the Universe. This method and…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Thierry Sousbie

Galaxy environment plays an important role in driving the transformation of galaxies from blue and star-forming to red and quenched. Recent works have focused on the role of cosmic web filaments in galaxy evolution and have suggested that…

In the regime of cosmology and large-scale structure formation, filaments are vital components of the cosmic web. This study employs statistical methods to examine the formation, evolution, and cosmological constraints of filaments…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-31 Ziyong Wu , Yu Luo , Wei Wang , Xi Kang , Renyue Cen

Galaxy clusters in the Universe occupy the important position of nodes of the cosmic web. They are connected among them by filaments, elongated structures composed of dark matter, galaxies, and gas. The connection of galaxy clusters to…

Cosmology and Nongalactic Astrophysics · Physics 2023-07-05 Nicola Malavasi , Jenny G. Sorce , Klaus Dolag , Nabila Aghanim

We investigate how large-scale cosmic filaments impact the quenching of galaxies within one virial radius of 324 simulated clusters from The Three Hundred project. We track cosmic filaments with the versatile, observation-friendly program…

Astrophysics of Galaxies · Physics 2022-02-16 S. Kotecha , C. Welker , Z. Zhou , J. Wadsley , K. Kraljic , J. Sorce , E. Rasia , I. Roberts , M. Gray , G. Yepes , W. Cui

Filaments are ubiquitous in the universe. Recent observations have revealed that stars and star clusters form preferentially along dense filaments. Understanding the formation and properties of filaments is therefore a crucial step in…

Solar and Stellar Astrophysics · Physics 2016-01-22 Christoph Federrath
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