Angular Power Spectrum of Gravitational-Wave Transient Sources as a Probe of the Large-Scale Structure
Abstract
We present a new, simulation-based inference method to compute the angular power spectrum of the distribution of foreground gravitational-wave transient events. As a first application of this method, we use the binary black hole mergers observed during the LIGO, Virgo, and KAGRA third observation run to test the spatial distribution of these sources. We find no evidence for anisotropy in their angular distribution. We discuss further applications of this method to investigate other gravitational-wave source populations and their correlations to the cosmological large-scale structure.
Copyright and License
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Acknowledgement
The authors thank Joe Romano for carefully reading the manuscript and providing useful comments. We also thank Sylvia Biscoveanu for discussions regarding PE using bilby_pipe, Derek Davis for discussion on detection statistics, Stuart Anderson for helping provide computing resources, and Reed Essick for useful comments on the manuscript. This material is based upon work supported by NSF's LIGO Laboratory which is a major facility fully funded by the National Science Foundation. The authors acknowledge computational resources provided by the LIGO Laboratory and supported by NSF Grants No. PHY-0757058 and No. PHY-0823459. M. C. and Y. Z. are partially supported by the U.S. National Science Foundation (NSF) through Award No. PHY-2011334. N. K. is supported by King's College London through an NMES Funded Studentship. A. I. R. is supported by the NSF Award No. PHY-1912594. M. S. is supported in part by the Science and Technology Facility Council (STFC), United Kingdom, under research Grant No. ST/P000258/1.
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Additional details
- ISSN
- 1079-7114
- National Science Foundation
- PHY-0757058
- National Science Foundation
- PHY-0823459
- National Science Foundation
- PHY-2011334
- King's College London
- National Science Foundation
- PHY-1912594
- Science and Technology Facilities Council
- ST/P000258/1
- Caltech groups
- LIGO