TheHaloMod: An online calculator for the halo model

TL;DR

TheHaloMod is an accessible, flexible Python and web-based tool that simplifies the calculation of halo model quantities for cosmological matter distribution and galaxy statistics, aiding researchers and educators.

Contribution

It introduces a new, comprehensive Python library and web app for efficient halo model calculations, with customizable extensions for galaxy statistics.

Findings

Efficient computation of halo model quantities

Flexible framework for galaxy statistics extension

User-friendly web application for educational and research purposes

Abstract

The halo model is a successful framework for describing the distribution of matter in the Universe -- from weak lensing observables to galaxy 2-point correlation functions. We review the basic formulation of the halo model and several of its components in the context of galaxy two-point statistics, developing a coherent framework for its application. We use this framework to motivate the presentation of a new Python tool for simple and efficient calculation of halo model quantities, and their extension to galaxy statistics via a \textit{halo occupation distribution}, called \halomod. This tool is efficient, simple to use, comprehensive and importantly provides a great deal of flexibility in terms of custom extensions. This Python tool is complemented by a new web-application at https://thehalomod.app that supports the generation of many halo model quantities directly from the browser -- useful for educators, students, theorists and observers.