LIGO/Virgo G275404 ANTARES search
Abstract
Using on-line data from the ANTARES detector, we have performed a follow-up analysis of the recently reported LIGO/Virgo G275404 event using the initial LIGO skyprobcc_cWB probability map at event time (LVC GCN Circ. 20738). 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/G275404.png (gwantares/ANT@GW). Considering the location probability provided by the LIGO collaboration, there is a 45% chance that the GW emitter was in the ANTARES field of view. No up-going muon neutrino candidate events were recorded within the 90% contour during a +/- 500s time-window centered on the G275404 event time. The expected number of atmospheric background events in the region visible by ANTARES is ~1.3e-3 in the +/- 500s time window. An extended search during +/- 1 hour gives no up-going neutrino coincidence. 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:
- February 2017
- Bibcode:
- 2017GCN.20751....1A