LIGO/Virgo G298389 ANTARES search
Abstract
Using on-line data from the ANTARES detector, we have performed a follow-up analysis of the recently reported LIGO/Virgo G298389 event using the updated LIB probability map at event time. The ANTARES visibility at the time of the alert together with the 90% contour of the probability map are shown in: https://www.cppm.in2p3.fr/~dornic/events/G298389/gw190817_visi.png <https://www.cppm.in2p3.fr/~dornic/events/G298389/gw190817_visi.png> (gwantares/GW@ANT32). Considering the location probability provided by the LIGO collaboration, there is only 6% chance that the GW emitter was in the ANTARES field of view. No up-going muon neutrino candidate events were recorded in the ANTARES sky during a +/- 500s time-window centered on the G298389 event time. The expected number of atmospheric background events in the region visible by ANTARES is ~1.1e-2 in the +/- 500s time window. An extended search during +/- 1 hour gives no up-going neutrino coincidence. The results of a second analysis covering the full-sky as well as an estimate of the upper limit on the associated neutrino fluence will be sent in a subsequent circular. ANTARES, being installed in the Mediterranean Deep Sea, is the largest neutrino detector in the Northern Hemisphere. It is primarily sensitive to astrophysical neutrinos in the TeV-PeV energy range. At 10 TeV, the median angular resolution for muon neutrinos is below 0.5 degrees. In the range 1-100 TeV, ANTARES has the best sensitivity to a large fraction of the Southern sky.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- August 2017
- Bibcode:
- 2017GCN.21601....1A