9–15 Oct 2022
Africa/Johannesburg timezone

Searching for GRB Counterparts to Gravitational-wave Events from the Third Gravitational Wave Observing Run with Fermi-GBM and Swift-BAT

12 Oct 2022, 12:15
15m
Contributed Talk Plenary 6

Speaker

Joshua Wood (NASA/MSFC)

Description

We present Fermi Gamma-ray Burst Monitor (Fermi-GBM) and Swift Burst Alert Telescope (Swift-BAT) observations of gravitational-wave (GW) events detected during the third LIGO/Virgo/KAGRA Collaboration observing run (O3). Using Fermi-GBM on-board triggers as well as sub-threshold searches in both Fermi-GBM and Swift-BAT ground data, we search for coincident gamma-ray transients associated with the GW events. No new joint events beyond GRB 170817A and GW170817 were found. We therefore calculate flux upper limits for the associated gamma-ray luminosity of each GW event. Using the lack of electromagnetic (EM) emission from binary black hole (BBH) mergers, we begin to constrain theoretical models of any such emission.

Track GRBs

Primary author

Joshua Wood (NASA/MSFC)

Co-authors

Cori Fletcher Milena Crnogorcevic

Presentation materials