Angular power spectrum of gravitational-wave transient sources as a probe of the large-scale structure

Yanyan Zheng; Nikolaos Kouvatsos; Jacob Golomb; Marco Cavaglià; Arianna I. Renzini; Mairi Sakellariadou

doi:10.1103/PhysRevLett.131.171403

Angular power spectrum of gravitational-wave transient sources as a probe of the large-scale structure

Cosmology and Nongalactic Astrophysics 2024-09-25 v2 General Relativity and Quantum Cosmology

Authors: Yanyan Zheng , Nikolaos Kouvatsos , Jacob Golomb , Marco Cavaglià , Arianna I. Renzini , Mairi Sakellariadou

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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.

Keywords

gravitational-wave transients angular power spectrum large-scale structure binary black hole mergers simulation-based inference ligo-virgo-kagra

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@article{arxiv.2305.02652,
  title  = {Angular power spectrum of gravitational-wave transient sources as a probe of the large-scale structure},
  author = {Yanyan Zheng and Nikolaos Kouvatsos and Jacob Golomb and Marco Cavaglià and Arianna I. Renzini and Mairi Sakellariadou},
  journal= {arXiv preprint arXiv:2305.02652},
  year   = {2024}
}

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6 pages, 5 figures

Angular power spectrum of gravitational-wave transient sources as a probe of the large-scale structure

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