Conveners
Plenary 6: GRB & GW
- Makoto Arimoto
Joint detection of GW and EM from binary neutron star merger provides enormously more information than detection of the GWs or the EM alone. This was beautifully demonstrated by the recent LVC runs and the comparison of GW 170817 with its EM counterparts and GW 190425 for which those weren't discovered. The EM radiation from binary neutron star mergers includes several distinct sources: The...
The study of gamma-ray bursts (GRBs) is often advanced by detections of individual spectacular events. In the last few years, very-high-energy (VHE, >100 GeV) emission from GRBs has been detected for the first time, allowing us to build a multiwavelength picture of GRBs that extends all the way up to TeV energies. In this talk, I will give an overview of the current state of VHE GRB...
I will report on the current instrument status, ongoing and planned projects, and recent results.
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 physical processes of the gamma-ray emission and particle acceleration during the prompt phase in GRBs are still unsettled. In order to perform an unambiguous physical modelling of GRB observations, a clear identification of the emission mechanism is essential. The very strong flare in GRB160821A, that occurs during the prompt phase at 135s, has for instance been clearly identified as...
The emission processes responsible for the prompt emission of gamma-ray bursts (GRBs) are still an open question. Besides temporal and spectral properties, hard X-ray/ gamma-ray polarization measurement is thought to be a powerful tool for probing the radiation mechanisms of GRBs since the emission mechanisms invoked to explain prompt emission are associated with unique polarization...
