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GCN CIRCULAR 21507, LIGO/Virgo G298048: INTEGRAL detection of a prompt gamma-ray counterpart
University of Geneva1
IRAP2
Russian Academy of Sciences3
National Institute for Astrophysics4
European Space Agency - ESA5
Astrophysics and Atmospheric Physics, National Space Institute, Technical University of Denmark6
National Space Institute, Technical University of Denmark7
Max Planck Institute for Extraterrestrial Physics8
University College Dublin9
French Alternative Energies and Atomic Energy Commission10
RAS - Space Research Institute11
...and 1 moreWe investigated serendipitous INTEGRAL observations carried out at thetime of the LIGO/Virgo burst candidate G298048. The satellite was covering a fraction of the probability of the LIGO-Virgo localization. The best sensitivity depends on the source location. We investigated the SPI-ACS light curves between -30 and +30 s from the trigger time (2017-08-17 12:41:04 UTC, T0) on temporal scales from 0.1 to 100s.
In the SPI-ACS data, we detect a short and relatively weak transient with S/N of at T0, with an S/N larger than 3. coincident with the GBM trigger (Connaughton 2017, GCN 21506). Further analysis is ongoing, and will be reported in the coming circulars.
Language: | English |
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Year: | 2017 |
Types: | Other |
ORCIDs: | Brandt, S. |