We present the results of targeted searches for gravitational-wave transients associated with gamma-ray bursts during the second observing run of Advanced LIGO and Advanced Virgo, which took place from 2016 November to 2017 August. We have analyzed 98 gamma-ray bursts using an unmodeled search method that searches for generic transient gravitational waves and 42 with a modeled search method that targets compact-binary mergers as progenitors of short gamma-ray bursts. Both methods clearly detect the previously reported binary merger signal GW170817, with p-values of z ≤ 1. We estimate 0.07–1.80 joint detections with Fermi-GBM per year for the 2019–20 LIGO-Virgo observing run and 0.15–3.90 per year when current gravitational-wave detectors are operating at their design sensitivities.
Creighton, Teviet; Diaz, Mario C.; Mukherjee, Soma; Quetschke, Volker; Rakhmanov, M.; Ramirez, K. E.; Sitmukhambetov, Satzhan; Stone, Robert; Tuyenbayev, D.; and Wang, W. H., "Search for Gravitational-wave Signals Associated with Gamma-Ray Bursts during the Second Observing Run of Advanced LIGO and Advanced Virgo" (2019). Physics and Astronomy Faculty Publications and Presentations. 331.
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The Astrophysical Journal