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Swift-BAT GUANO Follow-up of Gravitational-wave Triggers in the Third LIGO–Virgo–KAGRA Observing Run

  • The LIGO Scientific Collaboration
  • , the Virgo Collaboration
  • , the KAGRA Collaboration
  • Department of Astronomy and Astrophysics
  • Pennsylvania State University
  • University of Alabama
  • University of Toronto
  • University of Toronto
  • Astrophysics Science Division
  • NASA Goddard Space Flight Center
  • INAF Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo
  • INAF
  • Science and Research Directorate
  • Osservatorio Astronomico di Roma
  • MIFT Department
  • University of Messina
  • School of Physics & Astronomy
  • University of Leicester
  • Department of Physics and Astronomy
  • Clemson University
  • UCL Mullard Space Science Laboratory
  • MST-8, Los Alamos National Laboratory
  • University of Rome “Tor Vergata”
  • Max-Planck-Institut fuer Gravitationsphysik
  • California Institute of Technology
  • Graduate School of Science
  • Tokyo Institute of Technology
  • LIGO Hanford
  • Dipartimento di Farmacia
  • University of Salerno
  • INFN Sezione di Napoli
  • University of Warwick
  • Monash Centre for Astrophysics
  • Monash University
  • University of Wisconsin-Milwaukee
  • Louisiana State University
  • Australian National University
  • Leibniz Universität Hannover
  • Inter-University Centre for Astronomy and Astrophysics India
  • University of Cambridge
  • Instituto Nacional de Pesquisas Espaciais
  • Stanford University
  • Cardiff University
  • Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
  • National Astronomical Observatory
  • Advanced Technology Center
  • Dipartimento di Fisica
  • University of Turin
  • INFN Sezione di Torino
  • University of Glasgow
  • The University of Western Australia
  • Astroparticule and Cosmol APC

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We present results from a search for X-ray/gamma-ray counterparts of gravitational-wave (GW) candidates from the third observing run (O3) of the LIGO–Virgo–KAGRA network using the Swift Burst Alert Telescope (Swift-BAT). The search includes 636 GW candidates received with low latency, 86 of which have been confirmed by the offline analysis and included in the third cumulative Gravitational-Wave Transient Catalogs (GWTC-3). Targeted searches were carried out on the entire GW sample using the maximum-likelihood Non-imaging Transient Reconstruction and Temporal Search pipeline on the BAT data made available via the GUANO infrastructure. We do not detect any significant electromagnetic emission that is temporally and spatially coincident with any of the GW candidates. We report flux upper limits in the 15–350 keV band as a function of sky position for all the catalog candidates. For GW candidates where the Swift-BAT false alarm rate is less than 10−3 Hz, we compute the GW–BAT joint false alarm rate. Finally, the derived Swift-BAT upper limits are used to infer constraints on the putative electromagnetic emission associated with binary black hole mergers.

Original languageEnglish
Article number207
JournalAstrophysical Journal
Volume980
Issue number2
DOIs
Publication statusPublished - 20 Feb 2025
Externally publishedYes

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