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Published on: July 30, 2020
Angular Power Spectrum of Gravitational-Wave Transient Sources as a Probe of the Large-Scale Structure
Yanyan Zheng1, Nikolaos Kouvatsos2, Jacob Golomb3,4
1Institute of Multi-messenger Astrophysics and Cosmology, Missouri University of Science and Technology, Physics Building, 1315 North Pine Street, Rolla, Missouri 65409, USA.
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.
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