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相关论文: Profiles of cosmic filaments since z=4.0 in cosmol…

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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…

宇宙学与河外天体物理 · 物理学 2024-10-02 Samo Ilc , Dunja Fabjan , Elena Rasia , Stefano Borgani , Klaus Dolag

Large-scale cosmic filaments may have played an important role in shaping the properties of galaxies. Meanwhile, cosmic filaments are believed to harbor a substantial portion of the missing baryons at redshift z < 2. To inspect the role of…

宇宙学与河外天体物理 · 物理学 2024-06-03 Weishan Zhu , Tian-Rui Wang , Fupeng Zhang , Yi Zheng , Long-Long Feng

We investigate the distribution of missing baryons in the cosmic filaments by stacking $\sim 30,700$ filaments across the northern and southern SDSS sky regions using Planck Compton-$y$ and CMB lensing maps. Filaments are identified using…

宇宙学与河外天体物理 · 物理学 2026-02-09 Jianzhuo Li , Yi Zheng , Weishan Zhu

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…

宇宙学与河外天体物理 · 物理学 2019-04-10 Claudio Gheller , Franco Vazza

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…

宇宙学与河外天体物理 · 物理学 2015-09-09 Claudio Gheller , Franco Vazza , Jean Favre , Marcus Brüggen

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…

宇宙学与河外天体物理 · 物理学 2021-10-04 M. Angelinelli , S. Ettori , F. Vazza , T. W. Jones

Observations of galaxies and galaxy clusters in the local universe can account for only $\sim\,10\%$ of the total baryon content. Cosmological simulations predict that the `missing baryons' are spread throughout filamentary structures in…

宇宙学与河外天体物理 · 物理学 2019-04-10 Anna de Graaff , Yan-Chuan Cai , Catherine Heymans , John A. Peacock

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…

宇宙学与河外天体物理 · 物理学 2025-09-18 Qi-Rui Yang , Weishan Zhu , GuangYao Yu , Jian-Feng Mo , Yi Zheng , Long-Long Feng

Observations of the cosmic microwave background indicate that baryons account for 5% of the Universe's total energy content. In the local Universe, the census of all observed baryons falls short of this estimate by a factor of two.…

We present the study of gas phases around cosmic-web filaments detected in the TNG300-1 hydro-dynamical simulation at redshift z=0. We separate the gas in five different phases according to temperature and density. We show that filaments…

宇宙学与河外天体物理 · 物理学 2021-05-26 Daniela Galárraga-Espinosa , Nabila Aghanim , Mathieu Langer , Hideki Tanimura

We studied physical properties of matter in 24,544 filaments ranging from 30 to 100 Mpc in length, identified in the Sloan Digital Sky Survey (SDSS). We stacked the Comptonization y map produced by the Planck Collaboration around the…

宇宙学与河外天体物理 · 物理学 2020-05-13 H. Tanimura , N. Aghanim , V. Bonjean , N. Malavasi , M. Douspis

Cosmic filaments are thought to host a substantial fraction of the missing baryons at redshifts $z<2$. In this study, we constraint the baryonic content of these filaments using localized Fast Radio Bursts (FRBs). Filaments are identified…

宇宙学与河外天体物理 · 物理学 2025-11-04 Jian-Feng Mo , Weishan Zhu , Qi-Rui Yang , Yi Zheng , Long-Long Feng

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…

宇宙学与河外天体物理 · 物理学 2023-03-07 I. Vurm , J. Nevalainen , S. E. Hong , Y. M. Bahé , C. Dalla Vecchia , P. Heinämäki

Almost a third of the cosmic baryons are "missing" at low redshifts, as they reside in the invisible warm-hot intergalactic medium (WHIM). The thermal Sunyaev-Zeldovich (tSZ) effect, which measures the line-of-sight integral of the plasma…

宇宙学与河外天体物理 · 物理学 2018-11-22 Julian B. Muñoz , Abraham Loeb

We present a comprehensive study of the distribution of matter around different populations of large-scale cosmic filaments, using the IllustrisTNG simulation at z=0. We computed the dark matter (DM), gas, and stellar radial density…

宇宙学与河外天体物理 · 物理学 2022-05-18 Daniela Galárraga-Espinosa , Mathieu Langer , Nabila Aghanim

At high redshift, the cosmic web is widely expected to have a significant impact on the morphologies, dynamics and star formation rates of the galaxies embedded within it, underscoring the need for a comprehensive study of the properties of…

星系天体物理 · 物理学 2021-01-20 Marius Ramsøy , Adrianne Slyz , Julien Devriendt , Clotilde Laigle , Yohan Dubois

Context. A significant fraction of the predicted baryons remains undetected in the local universe. We adopted the common assumption that a large fraction of the missing baryons corresponds to the hot (log T(K) = 5.5-7) phase of the Warm Hot…

We propose a new approach to the missing baryons problem. Building on the common assumption that the missing baryons are in the form of the Warm Hot Intergalactic Medium (WHIM), we further assumed here that the galaxy luminosity density can…

宇宙学与河外天体物理 · 物理学 2015-11-11 J. Nevalainen , E. Tempel , L. J. Liivamägi , E. Branchini , M. Roncarelli , C. Giocoli , P. Heinämäki , E. Saar , A. Tamm , A. Finoguenov , P. Nurmi , M. Bonamente

Filaments, forming in the context of cosmological structure formation, are not only supposed to host the majority of the baryons at low redshifts in the form of the WHIM, but also to supply forming galaxies at higher redshifts with a…

宇宙学与河外天体物理 · 物理学 2015-06-04 J. S. Klar , J. P. Mücket

Most of the baryons in the local universe are ``missing'' in that they are not in galaxies or in the previously detected gaseous phases. These missing baryons are predicted to be in a moderately hot phase, 10^5-10^7 K, largely in the form…

天体物理学 · 物理学 2007-05-23 Eric D. Miller , Renato A. Dupke , Joel N. Bregman
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