GRB 190114C: Search for high-energy neutrinos with IceCube
ATel #12395; Justin Vandenbroucke (University of Wisconsin)
on 15 Jan 2019; 19:37 UT
Credential Certification: Justin Vandenbroucke (justin.vandenbroucke@wisc.edu)
Subjects: Neutrinos, Gamma-Ray Burst
Referred to by ATel #: 12475
The IceCube Collaboration (http://icecube.wisc.edu/) reports:
Swift has reported detection of the long GRB 190114C (GCN #23688). This GRB is notable for having been detected by MAGIC above 300 GeV (ATel #12390). Other observations include: ground afterglow follow-ups (GCN #23690, #23693, #23699, #23702, #23710), a spectroscopic redshift of z = 0.4245 +/- 0.0005 (GCN #23708), and Fermi LAT detection up to 23 GeV (GCN #23709).
IceCube has performed a search for track-like muon neutrino events arriving from the position reported by Swift XRT (GCN 23704). We have searched in a time window 150 seconds before the Swift-BAT trigger to one hour after the trigger (2019-01-14 20:54:33 UTC to 2019-01-14 21:57:03 UTC). No muon track-like events are found in spatial coincidence with GRB 190114C during this time period, resulting in a p-value of 1.0 with respect to an atmospheric background-only hypothesis. Accordingly, the time-integrated muon-neutrino flux normalization upper limit assuming an E^-2 spectrum (E^2 dN/dE) at the 90% CL is 4.36 x 10^-4 TeV cm^-2 for this observation period. The southern declination of this GRB suppresses IceCubeâs sensitivity to TeV neutrinos. IceCubeâs most sensitive energy range at this declination is 100 TeV to 20 PeV.
The IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu.
