21cmFAST v3: A Python-integrated C code forgenerating 3D realizations of the cosmic 21cm signal

TL;DR

The paper introduces 21cmFAST v3+, a Python-integrated C code that generates 3D realizations of the cosmic 21cm signal, offering improved usability and flexibility for cosmology simulations.

Contribution

It presents a new version of 21cmFAST with a user-friendly interface, enhanced flexibility, and community collaboration features, available on GitHub.

Findings

Maintains core functionality of previous versions

Features a simple, intuitive interface

Provides performance benchmarks

Abstract

This brief code paper presents a new Python-wrapped version of the popular 21cm cosmology simulator, 21cmFAST. The new version, v3+, maintains the same core functionality of previous versions of 21cmFAST, but features a simple and intuitive interface, and a great deal more flexibility. This evolution represents the work of a formalized collaboration, and the new version, available publicly on GitHub, provides a single point-of-reference for all future upgrades and community-added features. In this paper, we describe simple usage of 21cmFAST, some of its new features, and provide a simple performance benchmark.