Pith. sign in

REVIEW 4 cited by

The boundary of cosmic filaments

Not yet reviewed by Pith; the record is open.

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2402.11678 v2 pith:BLDZ46Y7 submitted 2024-02-18 astro-ph.CO astro-ph.GA

classification astro-ph.COastro-ph.GA
keywords filamentfilamentsclusterscosmicradiusaverageboundaryconnected
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

For decades, the boundary of cosmic filaments have been a subject of debate. In this work, we determine the physically-motivated radii of filaments by constructing stacked galaxy number density profiles around the filament spines. We find that the slope of the profile changes with distance to the filament spine, reaching its minimum at approximately 1 Mpc at z = 0 in both state-of-the-art hydrodynamical simulations and observational data. This can be taken as the average value of the filament radius. Furthermore, we note that the average filament radius rapidly decreases from z = 4 to z = 1, and then slightly increases. Moreover, we find that the filament radius depends on the filament length, the distance from connected clusters, and the masses of the clusters. These results suggest a two-phase formation scenario of cosmic filaments. The filaments experience rapid contraction before z = 1, but their density distribution has remained roughly stable since then. The subsequent mass transport along the filaments to the connected clusters is likely to have contributed to the formation of the clusters themselves.

Discussion (0). Sign in to comment.

Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. MIGHTEE-HI: Environmental effects of cosmic filaments on extragalactic HI detections in the COSMOS and XMM-LSS fields

    astro-ph.GA 2026-08 conditional novelty 6.0 of 10

    Filaments in the cosmic web measurably change how often galaxies are detected in HI, reducing detections in low-density late-type galaxies and enhancing them in massive early-type galaxies.

  2. Cosmic Velocity Flows: from Theory to Observations

    astro-ph.CO 2026-08 conditional novelty 6.0 of 10

    A methods-heavy thesis presenting the Sahyadri simulation suite, calibrated filament reconstruction with Fourier smoothing, and the hierarchical Voronoi filament finder Skeletor, with phase-space analyses of filament ...

  3. Artifacts in Halo Shapes: Imprints of the Initial Condition

    astro-ph.CO 2025-07 conditional novelty 6.0 of 10

    Grid-based initial conditions imprint roughly one-percent alignment artifacts on simulated halo shapes, with a redshift-dependent sign flip whose origin is not yet pinned down.

  4. Tracing the Cosmic web across Cosmic time through SKA observations of radio galaxies

    astro-ph.GA 2026-07 unverdicted novelty 3.0 of 10

    A review/roadmap arguing that SKA observations of radio galaxies, combined with multi-wavelength redshift and cosmic-web catalogues, will let radio galaxies trace and probe the structure, magnetism, and energetics of ...

Pith tools