COLOSSUS swMATH ID: 38823 Software Authors: Diemer, Benedikt Description: COLOSSUS: A python toolkit for cosmology, large-scale structure, and dark matter halos. This paper introduces Colossus, a public, open-source python package for calculations related to cosmology, the large-scale structure (LSS) of matter in the universe, and the properties of dark matter halos. The code is designed to be fast and easy to use, with a coherent, well-documented user interface. The cosmology module implements Friedman-Lemaitre-Robertson-Walker cosmologies including curvature, relativistic species, and different dark energy equations of state, and provides fast computations of the linear matter power spectrum, variance, and correlation function. The LSS module is concerned with the properties of peaks in Gaussian random fields and halos in a statistical sense, including their peak height, peak curvature, halo bias, and mass function. The halo module deals with spherical overdensity radii and masses, density profiles, concentration, and the splashback radius. To facilitate the rapid exploration of these quantities, Colossus implements more than 40 different fitting functions from the literature. I discuss the core routines in detail, with particular emphasis on their accuracy. Homepage: https://arxiv.org/abs/1712.04512 Source Code: https://bitbucket.org/bdiemer/colossus/src/master/ Dependencies: python Related Software: CAMB; VEGAS; PyBird; gevolution; GADGET; xPand; xPert; Jupyter; Python; PyAutoLens; PyMultiNest; PyAutoFit; NumPy; Numba; Matplotlib; emcee; dynesty; corner.py; Astropy; pyquad Cited in: 3 Documents all top 5 Cited by 7 Authors 1 Gon, Aritra Kumar 1 Katz, Omer Zvi 1 Khatri, Rishi 1 Outmezguine, Nadav Joseph 1 Redigolo, Diego 1 Umeh, Obinna 1 Volansky, Tomer Cited in 2 Serials 2 Journal of Cosmology and Astroparticle Physics 1 Nuclear Physics. B all top 5 Cited in 6 Fields 3 Relativity and gravitational theory (83-XX) 2 Quantum theory (81-XX) 1 Partial differential equations (35-XX) 1 Probability theory and stochastic processes (60-XX) 1 Astronomy and astrophysics (85-XX) 1 Information and communication theory, circuits (94-XX) Citations by Year