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SCONCE: A cosmic web finder for spherical and conic geometries
Yikun Zhang, Rafael S. de Souza, Yen-Chi Chen
The latticework structure known as the cosmic web provides a valuable insight into the assembly history of large-scale structures. Despite the variety of methods to identify the co…
Detecting Galaxy-Filament Alignments in the Sloan Digital Sky Survey III
Yen-Chi Chen, Shirley Ho, Jonathan Blazek +4
Previous studies have shown the filamentary structures in the cosmic web influence the alignments of nearby galaxies. We study this effect in the LOWZ sample of the Sloan Digital S…
The detection of the imprint of filaments on cosmic microwave background lensing
Siyu He, Shadab Alam, Simone Ferraro +2
Galaxy redshift surveys, such as 2dF, SDSS, 6df, GAMA and VIPERS, have shown that the spatial distribution of matter forms a rich web, known as the cosmic web. The majority of gala…
Cosmic Web Reconstruction through Density Ridges: Catalogue
Yen-Chi Chen, Shirley Ho, Jon Brinkmann +4
We construct a catalogue for filaments using a novel approach called SCMS (subspace constrained mean shift; Ozertem & Erdogmus 2011; Chen et al. 2015). SCMS is a gradient-based met…
Investigating Galaxy-Filament Alignments in Hydrodynamic Simulations using Density Ridges
Yen-Chi Chen, Shirley Ho, Ananth Tenneti +6
In this paper, we study the filamentary structures and the galaxy alignment along filaments at redshift in the MassiveBlack-II simulation, a state-of-the-art, high-resolut…
Cosmic Web Reconstruction through Density Ridges: Method and Algorithm
Yen-Chi Chen, Shirley Ho, Peter E. Freeman +2
The detection and characterization of filamentary structures in the cosmic web allows cosmologists to constrain parameters that dictates the evolution of the Universe. While many f…