Search for gravitational waves associated with gamma-ray bursts detected by Fermi and Swift during the LIGO-Virgo run O3a

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Abstract

We search for gravitational-wave transients associated with gamma-ray bursts (GRBs) detected by the Fermi and Swift satellites during the first part of the third observing run of Advanced LIGO and Advanced Virgo (2019 April 1 15:00 UTC–2019 October 1 15:00 UTC). A total of 105 GRBs were analyzed using a search for generic gravitational-wave transients; 32 GRBs were analyzed with a search that specifically targets neutron star binary mergers as short GRB progenitors. We find no significant evidence for gravitational-wave signals associated with the GRBs that we followed up, nor for a population of unidentified subthreshold signals. We consider several source types and signal morphologies, and report for these lower bounds on the distance to each GRB.

Details

Original languageEnglish
Article number86
Number of pages16
JournalThe Astrophysical Journal
Volume915
Issue number2
Publication statusPublished - 9 Jul 2021

Keywords

  • Gravitational waves, Gravitational wave astronomy, LIGO, Gamma-ray bursts, Compact binary stars, Neutron stars, Black holes