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Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE,General Relativity and Quantum Cosmology, gr-qc
Abstract:
We search for gravitational-wave signals associated with gamma-ray bursts
detected by the Fermi and Swift satellites during the second half of the third
observing run of Advanced LIGO and Advanced Virgo (1 November 2019 15:00 UTC-27
March 2020 17:00 UTC).We conduct two independent searches: a generic
gravitational-wave transients search to analyze 86 gamma-ray bursts and an
analysis to target binary mergers with at least one neutron star as short
gamma-ray burst progenitors for 17 events. We find no significant evidence for
gravitational-wave signals associated with any of these gamma-ray bursts. A
weighted binomial test of the combined results finds no evidence for
sub-threshold gravitational wave signals associated with this GRB ensemble
either. We use several source types and signal morphologies during the
searches, resulting in lower bounds on the estimated distance to each gamma-ray
burst. Finally, we constrain the population of low luminosity short gamma-ray
bursts using results from the first to the third observing runs of Advanced
LIGO and Advanced Virgo. The resulting population is in accordance with the
local binary neutron star merger rate.