Conference paper
Searching for Short GRBs in Soft Gamma Rays with INTEGRAL/PICsIT
National Institute for Astrophysics1
French Alternative Energies and Atomic Energy Commission2
RAS - Space Research Institute3
University of Geneva4
European Space Agency - ESA5
National Space Institute, Technical University of Denmark6
Astrophysics and Atmospheric Physics, National Space Institute, Technical University of Denmark7
Max Planck Institute for Extraterrestrial Physics8
Centro de Astrobiología9
University College Dublin10
The Research Institute in Astrophysics and Planetology11
...and 1 moreWith gravitational wave (GW) detections by the LIGO/Virgo collaboration over the past several years, there is heightened interest in gamma-ray bursts (GRBs), especially “short” GRBs (T <2s). The high-energy PICsIT detector (~0.2 ─ 10 MeV) on-board the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) is able to observe sources out to approximately 70° off-axis, making it essentially a soft gamma-ray, all-sky monitor for impulsiveevents, such as SGRBs.
Because SGRBs typically have hard spectra with peak energies of a few hundred keV, PICsIT with its ~ 3000 cm collecting area is able to provide spectral information about these sources at soft gamma-ray energies.We have begun a study of PICsIT data for faint SGRB ssimilar to the one associated with the binary neutron star (BNS) merger GW170817, and also are preparing for future GW triggers by developing a realtime burst analysis for PICsIT.
Searching the PICsIT data for significant excesses during ~30 min-long pointings containing times of SGRBs, we have been able to differentiate between SGRBs and spurious events. Also, this work allows us to assess what fraction of reported SGRBs have been detected by PICsIT, which can be used to provide an estimate of the number of GW BNS events seen by PICsIT during the next LIGO/Virgo observing runstarting in Fall 2018.
Language: | English |
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Year: | 2018 |
Proceedings: | 231st AAS Meeting |
Types: | Conference paper |
ORCIDs: | Brandt, Søren and Chenevez, Jérôme |