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GCN CIRCULAR 23517: INTEGRAL observations of the events in the GWTC-1 catalog
University of Geneva1
IRAP2
Russian Academy of Sciences3
European Space Agency - ESA4
European Space Astronomy Centre5
National Institute for Astrophysics6
Astrophysics and Atmospheric Physics, National Space Institute, Technical University of Denmark7
National Space Institute, Technical University of Denmark8
Max Planck Institute for Extraterrestrial Physics9
French Alternative Energies and Atomic Energy Commission10
University College Dublin11
...and 1 moreRecently, LIGO/Virgo announced the catalog of gravitational wave events during the first two observing runs O1 and O2 [GWTC-1, arXiv:1811.12907]: 11 high-confidence and 14 marginal events. INTEGRAL observations are available for 20 out of the 25 events from the complete GWTC-1 sample, consistent with the INTEGRAL duty cycle of about 85%.
In particular, the observations are available for 7 out of 11 (64%) of the high-confidence gravitational wave events and 13 out of 14 (93%) of the marginal ones. For each of the observed events, INTEGRAL was sensitive to the entire LIGO/Virgo localization region. Our preliminary search did not reveal any new significant impulsive gamma-ray counterparts, setting typical upper limits on the 1-s peak flux ranging from 1e-7 to 1e-6 erg/cm2/s in 75-2000 keV energy range.
Detailed analysis and upper limits will be reported in a forthcoming paper.
| Language: | English |
|---|---|
| Year: | 2018 |
| Types: | Other |
| ORCIDs: | Chenevez, J. and Brandt, S. |
