The Astrophysical Journal (Jan 2023)
pygwb: A Python-based Library for Gravitational-wave Background Searches
- Arianna I. Renzini,
- Alba Romero-Rodríguez,
- Colm Talbot,
- Max Lalleman,
- Shivaraj Kandhasamy,
- Kevin Turbang,
- Sylvia Biscoveanu,
- Katarina Martinovic,
- Patrick Meyers,
- Leo Tsukada,
- Kamiel Janssens,
- Derek Davis,
- Andrew Matas,
- Philip Charlton,
- Guo-Chin Liu,
- Irina Dvorkin,
- Sharan Banagiri,
- Sukanta Bose,
- Thomas Callister,
- Federico De Lillo,
- Luca D’Onofrio,
- Fabio Garufi,
- Gregg Harry,
- Jessica Lawrence,
- Vuk Mandic,
- Adrian Macquet,
- Ioannis Michaloliakos,
- Sanjit Mitra,
- Kiet Pham,
- Rosa Poggiani,
- Tania Regimbau,
- Joseph D. Romano,
- Nick van Remortel,
- Haowen Zhong
Affiliations
- Arianna I. Renzini
- ORCiD
- LIGO Laboratory, California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]; Department of Physics, California Institute of Technology , Pasadena, CA 91125, USA
- Alba Romero-Rodríguez
- ORCiD
- Theoretische Natuurkunde, Vrije Universiteit Brussel , Pleinlaan 2, B-1050 Brussels, Belgium
- Colm Talbot
- ORCiD
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , 77 Massachusetts Ave, Cambridge, MA 02139, USA
- Max Lalleman
- ORCiD
- Universiteit Antwerpen , Prinsstraat 13, B-2000 Antwerpen, Belgium
- Shivaraj Kandhasamy
- ORCiD
- Inter-University Centre for Astronomy and Astrophysics , Pune 411007, India
- Kevin Turbang
- ORCiD
- Theoretische Natuurkunde, Vrije Universiteit Brussel , Pleinlaan 2, B-1050 Brussels, Belgium; Universiteit Antwerpen , Prinsstraat 13, B-2000 Antwerpen, Belgium
- Sylvia Biscoveanu
- ORCiD
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , 77 Massachusetts Ave, Cambridge, MA 02139, USA; LIGO Laboratory, Massachusetts Institute of Technology , 185 Albany St, Cambridge, MA 02139, USA
- Katarina Martinovic
- ORCiD
- Theoretical Particle Physics and Cosmology Group, Physics Department, King’s College London , University of London, Strand, London, WC2R 2LS, UK
- Patrick Meyers
- ORCiD
- Theoretical Astrophysics Group, California Institute of Technology , Pasadena, CA 91125, USA
- Leo Tsukada
- Department of Physics, The Pennsylvania State University , University Park, PA 16802, USA; Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802, USA
- Kamiel Janssens
- ORCiD
- Universiteit Antwerpen , Prinsstraat 13, B-2000 Antwerpen, Belgium; Université Côte d’Azur , Observatoire Côte d’Azur, ARTEMIS, 06304 Nice, France
- Derek Davis
- ORCiD
- LIGO Laboratory, California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]; Department of Physics, California Institute of Technology , Pasadena, CA 91125, USA
- Andrew Matas
- Max Planck Institute for Gravitational Physics (Albert Einstein Institute) , D-14476 Potsdam, Germany
- Philip Charlton
- ORCiD
- OzGrav, Charles Sturt University , Wagga Wagga, NSW 2678, Australia
- Guo-Chin Liu
- Department of Physics, Tamkang University , Danshui Dist., New Taipei City 25137, Taiwan
- Irina Dvorkin
- ORCiD
- Institut d’Astrophysique de Paris, Sorbonne Université & CNRS , UMR 7095, 98 bis bd Arago, F-75014 Paris, France; Université Paris Cité , CNRS, Astroparticule et Cosmologie, F-75013 Paris, France
- Sharan Banagiri
- ORCiD
- Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University , 1800 Sherman Ave, Evanston, IL 60201, USA
- Sukanta Bose
- Inter-University Centre for Astronomy and Astrophysics , Pune 411007, India
- Thomas Callister
- ORCiD
- Kavli Institute for Cosmological Physics, The University of Chicago , 5640 S. Ellis Ave., Chicago, IL 60615, USA
- Federico De Lillo
- Centre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain , Louvain-la-Neuve, B-1348, Belgium
- Luca D’Onofrio
- Università di Napoli “Federico II,” Dipartimento di Fisica “Ettore Pancini,” Compl. Univ. di Monte S. Angelo , Via Cinthia 21, I-80126, Napoli, Italy; INFN, Sezione di Napoli, Compl. Univ. di Monte S. Angelo , Edificio G, Via Cinthia, I-80126, Napoli, Italy
- Fabio Garufi
- Università di Napoli “Federico II,” Dipartimento di Fisica “Ettore Pancini,” Compl. Univ. di Monte S. Angelo , Via Cinthia 21, I-80126, Napoli, Italy; INFN, Sezione di Napoli, Compl. Univ. di Monte S. Angelo , Edificio G, Via Cinthia, I-80126, Napoli, Italy
- Gregg Harry
- Physics Department, American University , Washington, DC 20016, USA
- Jessica Lawrence
- Department of Physics, Texas Tech University , Lubbock, TX 79409, USA
- Vuk Mandic
- School of Physics and Astronomy, University of Minnesota , Minneapolis, MN 55455, USA
- Adrian Macquet
- Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra (Barcelona) Spain
- Ioannis Michaloliakos
- Department of Physics, University of Florida , Gainesville, FL 32611, USA
- Sanjit Mitra
- Inter-University Centre for Astronomy and Astrophysics , Pune 411007, India
- Kiet Pham
- School of Physics and Astronomy, University of Minnesota , Minneapolis, MN 55455, USA
- Rosa Poggiani
- Università di Pisa , I-56127 Pisa, Italy; INFN , Sezione di Pisa, I-56127 Pisa, Italy
- Tania Regimbau
- ORCiD
- LAPP , CNRS, 9 Chemin de Bellevue, F-74941 Annecy-le-Vieux, France
- Joseph D. Romano
- ORCiD
- Department of Physics, Texas Tech University , Lubbock, TX 79409, USA
- Nick van Remortel
- Universiteit Antwerpen , Prinsstraat 13, B-2000 Antwerpen, Belgium
- Haowen Zhong
- School of Physics and Astronomy, University of Minnesota , Minneapolis, MN 55455, USA
- DOI
- https://doi.org/10.3847/1538-4357/acd775
- Journal volume & issue
-
Vol. 952,
no. 1
p. 25
Abstract
The collection of gravitational waves (GWs) that are either too weak or too numerous to be individually resolved is commonly referred to as the gravitational-wave background (GWB). A confident detection and model-driven characterization of such a signal will provide invaluable information about the evolution of the universe and the population of GW sources within it. We present a new, user-friendly, Python-based package for GW data analysis to search for an isotropic GWB in ground-based interferometer data. We employ cross-correlation spectra of GW detector pairs to construct an optimal estimator of the Gaussian and isotropic GWB, and Bayesian parameter estimation to constrain GWB models. The modularity and clarity of the code allow for both a shallow learning curve and flexibility in adjusting the analysis to one’s own needs. We describe the individual modules that make up pygwb , following the traditional steps of stochastic analyses carried out within the LIGO, Virgo, and KAGRA Collaboration. We then describe the built-in pipeline that combines the different modules and validate it with both mock data and real GW data from the O3 Advanced LIGO and Virgo observing run. We successfully recover all mock data injections and reproduce published results.
Keywords
