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A Joint Fermi-GBM and LIGO/Virgo Analysis of Compact Binary Mergers from the First and Second Gravitational-wave Observing Runs

Hamburg, R.
•
Fletcher, C.
•
Burns, E.
altro
Zweizig, J.
2020
  • journal article

Periodico
THE ASTROPHYSICAL JOURNAL
Abstract
We present results from offline searches of Fermi Gamma-ray Burst Monitor (GBM) data for gamma-ray transients coincident with the compact binary coalescences observed by the gravitational-wave (GW) detectors Advanced LIGO and Advanced Virgo during their first and second observing runs. In particular, we perform follow-up for both confirmed events and low significance candidates reported in the LIGO/Virgo catalog GWTC-1. We search for temporal coincidences between these GW signals and GBM-triggered gamma-ray bursts (GRBs). We also use the GBM Untargeted and Targeted subthreshold searches to find coincident gamma-rays below the onboard triggering threshold. This work implements a refined statistical approach by incorporating GW astrophysical source probabilities and GBM visibilities of LIGO/Virgo sky localizations to search for cumulative signatures of coincident subthreshold gamma-rays. All search methods recover the short gamma-ray burst GRB 170817A occurring ~1.7 s after the binary neutron-star merger GW170817. We also present results from a new search seeking GBM counterparts to LIGO single-interferometer triggers. This search finds a candidate joint event, but given the nature of the GBM signal and localization, as well as the high joint false alarm rate of 1.1 × 10^−6 Hz, we do not consider it an astrophysical association. We find no additional coincidences.
DOI
10.3847/1538-4357/ab7d3e
WOS
WOS:000547576300001
Archivio
http://hdl.handle.net/11368/2964719
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85085073754
https://iopscience.iop.org/article/10.3847/1538-4357/ab7d3e
Diritti
open access
license:digital rights management non definito
license:copyright editore
FVG url
https://arts.units.it/request-item?handle=11368/2964719
Soggetti
  • Gravitational wave

  • Gamma ray burst

  • Neutron star

  • Black hole

  • multimessenger astrop...

Scopus© citazioni
8
Data di acquisizione
Jun 7, 2022
Vedi dettagli
Web of Science© citazioni
10
Data di acquisizione
Mar 18, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
Vedi dettagli
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