Rapid Stellar and Binary Population Synthesis with COMPAS
Team COMPAS, Jeff Riley, Poojan Agrawal, Jim W. Barrett, Kristan Boyett, Floor S. Broekgaarden, Debatri Chattopadhyay, S. M. Gaebel, Fabian Gittins, Ryosuke Hirai, George Howitt, Stephen Justham, Lokesh Khandelwal, Floris Kummer, Mike Y. M. Lau, Ilya Mandel, S. E. de Mink, Coenraad J. Neijssel, Tim Riley, L. A. C. van Son, S. P. Stevenson, Alejandro Vigna-Gómez, S. Vinciguerra, Tom Wagg, Reinhold Willcox
Abstract
Abstract Compact Object Mergers: Population Astrophysics and Statistics (COMPAS; https://compas.science ) is a public rapid binary population synthesis code. COMPAS generates populations of isolated stellar binaries under a set of parameterized assumptions in order to allow comparisons against observational data sets, such as those coming from gravitational-wave observations of merging compact remnants. It includes a number of tools for population processing in addition to the core binary evolution components. COMPAS is publicly available via the GitHub repository https://github.com/TeamCOMPAS/COMPAS/ , and is designed to allow for flexible modifications as evolutionary models improve. This paper describes the methodology and implementation of COMPAS. It is a living document that will be updated as new features are added to COMPAS; the current document describes COMPAS v02.21.00.