Two-Dimensional Correlation Function of Binary Black Hole Coalescences
We compute the two-dimensional correlation functions of the binary black hole coalescence detections in LIGO-Virgo’s first and second observation runs. The sky distribution of binary black hole coalescence events is tested for correlations at different angular scales by comparing the observed correlation function to two reference functions that are obtained from mock datasets of localization error regions uniformly distributed in the sky. No excess correlation at any angular scale is found. The power-law slope of the correlation function is estimated to be γ = 2.24 ± 0.33 at the three-σ confidence level, a value consistent with the measured distribution of galaxies.
M. Cavaglia and A. Modi, "Two-Dimensional Correlation Function of Binary Black Hole Coalescences," Universe, vol. 6, no. 7, MDPI, Jul 2020.
The definitive version is available at https://doi.org/10.3390/UNIVERSE6070093
Keywords and Phrases
Black holes; Gravitational waves; Universe large-scale structure
International Standard Serial Number (ISSN)
Article - Journal
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07 Jul 2020
National Science Foundation, Grant LIGO-P2000157