English
Related papers

Related papers: The Filament Rift: $\Lambda$CDM's Structural Chall…

200 papers

We decomposed the G333 complex and the G331 giant molecular cloud into multi-scale hub-filament systems (HFs) using the high-resolution $^{13}$CO (3$-$2) data from LAsMA observations. We employed the filfinder algorithm to identify and…

Astrophysics of Galaxies · Physics 2025-06-23 J. W. Zhou , J. S. Urquhart , F. Wyrowski , S. Neupane , T. Liu , M. Juvela

The interstellar medium contains filamentary structure over a wide range of scales. Understanding the role of this structure, both as a conduit of gas across the scales and a diagnostic tool of local physics, is a major focus of star…

Astrophysics of Galaxies · Physics 2022-03-24 A. Hacar , S Clark , F. Heitsch , J. Kainulainen , G. Panopoulou , D. Seifried , R. Smith

The nature versus nurture scenario in galaxy and group evolution is a long-standing problem not yet fully understood on cosmological scales. We study the properties of groups and their central galaxies in different large-scale environments…

Astrophysics of Galaxies · Physics 2017-01-11 Anup Poudel , Pekka Heinämäki , Elmo Tempel , Maret Einasto , Heidi Lietzen , Pasi Nurmi

Models for the formation and evolution of galaxies readily predict physical properties such as the star formation rates, metal enrichment histories, and, increasingly, gas and dust content of synthetic galaxies. Such predictions are…

Cosmology and Nongalactic Astrophysics · Physics 2009-12-15 Charlie Conroy , Martin White , James E. Gunn

The presence of Galactic cirrus is an obstacle for studying both faint objects in our Galaxy and low surface brightness extragalactic structures. With the aim of studying individual cirrus filaments in SDSS Stripe 82 data, we develop…

Hub-filament systems (HFSs) are potential sites of massive star formation (MSF). To understand the role of filaments in MSF and the origin of HFSs, we conducted a multi-scale and multi-wavelength observational investigation of the molecular…

Astrophysics of Galaxies · Physics 2024-11-22 A. K. Maity , L. K. Dewangan , N. K. Bhadari , Y. Fukui , A. Haj Ismail , O. R. Jadhav , Saurabh Sharma , H. Sano

The $\Lambda$CDM paradigm successfully explains the large-scale structure of the Universe, but is less well constrained on sub-galactic scales. Gravitational lens modelling has been used to measure the imprints of dark substructures on…

Cosmology and Nongalactic Astrophysics · Physics 2024-02-29 Daniel J. Ballard , Wolfgang J. R. Enzi , Thomas E. Collett , Hannah C. Turner , Russell J. Smith

We search for and find fossil evidence that the distribution of the spin axes of galaxies in cosmic web filaments relative to their host filaments are not randomly distributed. This would indicate that the action of large scale tidal…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Bernard J. T. Jones , Rien van de Weygaert , Miguel A. Aragon-Calvo

The universe in large scales is structured as a network known as cosmic web. Filaments are one of the structural components of this web, which can be introduced as a novel probe to study the formation and evolution of structures and as a…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-16 Mohammad Ansari Fard , Sina Taamoli , Shant Baghram

Aims. This work provides an analysis of how the galaxy number density of the input data affects the filaments detected with the Bisous filament finder and gives estimates of the reliability of the method itself to assess the robustness of…

Cosmology and Nongalactic Astrophysics · Physics 2021-05-26 Moorits Mihkel Muru , Elmo Tempel

Strong gravitational lensing offers a powerful probe of the detailed distribution of matter in lenses, while magnifying and bringing faint background sources into view. Observed strong lensing by massive galaxy clusters, which are often in…

Cosmology and Nongalactic Astrophysics · Physics 2024-05-29 Yarone M. Tokayer , Isaque Dutra , Priyamvada Natarajan , Guillaume Mahler , Mathilde Jauzac , Massimo Meneghetti

Despite the broad successes of the flat $\Lambda$CDM model and its fitness to the various cosmological observations, it confronts challenges stemming from anomalies in the measurements of the Hubble constant ($H_0$) and the amplitude of…

Cosmology and Nongalactic Astrophysics · Physics 2025-01-28 Saeed Pourojaghi , Mohammad Malekjani

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

Filaments of the cosmic web have long been associated with the threadlike structures seen in galaxy redshift surveys. However, despite their baryon content being dominated by hot gas, these filaments have been an elusive target for X-ray…

Recent years have brought strong observational evidences for the standard LCDM cosmological model. Cosmic microwave background (CMB) anisotropy and large scale structure (LSS) probes do not favour any extensions of the standard model.…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-18 Marian Douspis , Laura Salvati , Nabila Aghanim

We test the concordance LCDM cosmology by comparing predictions for the mean properties of galaxy clusters to observations. We use high-resolution N-body simulations of cosmic structure formation and semi-analytic models of galaxy formation…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Stefan Hilbert , Simon D. M. White

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…

Astrophysics of Galaxies · Physics 2021-01-20 Marius Ramsøy , Adrianne Slyz , Julien Devriendt , Clotilde Laigle , Yohan Dubois

Context. Gravitational collapse theory and numerical simulations suggest that the velocity field within large-scale galaxy filaments is dominated by motions along the filaments. Aims. Our aim is to check whether observational data reveal…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-25 Elmo Tempel , Antti Tamm

We present the first detection of mass dependent galactic spin alignments with local cosmic filaments with over 2 sigma confidence using IFS kinematics. The 3D network of cosmic filaments is reconstructed on Mpc scales across GAMA fields…

[Abridged] Molecular filaments have received special attention recently, thanks to new observational results on their properties. In particular, our early analysis of filament properties revealed a narrow distribution of median widths…