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GCN CIRCULAR 23689: INTEGRAL observation of IceCube-190104A
University of Geneva1
University College Dublin2
IRAP3
CSIC4
Russian Academy of Sciences5
European Space Agency - ESA6
European Space Astronomy Centre7
National Institute for Astrophysics8
Astrophysics and Atmospheric Physics, National Space Institute, Technical University of Denmark9
National Space Institute, Technical University of Denmark10
Max Planck Institute for Extraterrestrial Physics11
French Alternative Energies and Atomic Energy Commission12
Institut de recherche sur les lois fondamentales de l'Univers13
...and 3 moreUsing INTEGRAL we have performed a search for a prompt gamma-ray counterpart of the cosmic neutrino candidate IceCube-190104A (GCN 23605). At the time of the event (2019-01-04 08:34:38 UTC, hereafter T0), INTEGRAL was operating in nominal mode. The peak of the neutrino localization probability was at an angle of 92 deg with respect to the spacecraft pointing axis.
This orientation implies strongly suppressed response of IBIS and near-optimal response of SPI-ACS. The background within +/-300 seconds around the event was very stable. We do not detect any significant counterparts and estimate a 3-sigma upper limit on the 75-2000 keV fluence of 2.1e-07 erg/cm^2 for a burst lasting less than 1 s with a characteristic short GRB spectrum (an exponentially cut off power law with alpha=-0.5 and Ep=600 keV) occurring at any time in the interval within 300 s around T0.
For a typical long GRB spectrum (Band function with alpha=-1, beta=-2.5, and Ep=300 keV), the derived peak flux upper limit is ~2.4e-07 (7.4e-07) rg/cm^2/s at 1 s (8 s) time scale in 75-2000 keV energy range.
| Language: | English |
|---|---|
| Year: | 2019 |
| Types: | Other |
| ORCIDs: | Chenevez, J. and Brandt, S. |
