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[ascl:2201.011] COWS: Cosmic web filament finder
Pfeifer, Simon; Libeskind, Noam I.; Hoffman, Yehuda; Hellwing, Wojciech A.; Bilicki, Maciej; Naidoo, Krishna

COWS (COsmic Web Skeleton) implements the cosmic filament finder COsmic Web Skeleton (COWS). Written in Python, the cosmic filament finder works on Hessian-based cosmic web identifiers (such as the V-web) and returns a catalogue of filament spines. The code identifies the medial axis, or skeleton, of cosmic web filaments and then separates this skeleton into individual filaments.

[ascl:2503.038] OneCovariance: Compute covariance matrices
Reischke, Robert; Unruh, Sandra; Asgari, Marika; Dvornik, Andrej; Hildebrandt, Hendrik; Joachimi, Benjamin; Porth, Lucas; von Wietersheim-Kramsta, Maximilian; van den Busch, Jan Luca; Stölzner, Benjamin; Wright, Angus H.; Yan, Ziang; Bilicki, Maciej; Burger, Pierre; Chisari, Nora Elisa; Harnois-Deraps, Joachim; Georgiou, Christos; Heymans, Catherine; Jalan, Priyanka; Joudaki, Shahab; Kuijken, Konrad; Li, Shun-Sheng; Linke, Laila; Mahony, Constance; Sciotti, Davide; Tröster, Tilman; Yoon, Mijin

OneCovariance calculates the covariance matrix of photometric large-scale structure surveys. It can produce the covariance matrix for all the 2-point statistics used within the Kilo-Degree-Survey (KiDS), including configuration space statistics, bandpowers, and COSEBIs. These observables are derived from projected Fourier space quantities. OneCovariance is flexible, in that it can read in the ingredients from a harmonic space covariance matrix and produce one of the mentioned statistics.