GRB 190114C: Search for ultra-high-energy neutrinos with ARIANNA
ATel #12475; Christian Glaser (UC Irvine), Steven Barwick (UC Irvine), Geoffrey Gaswint (UC Irvine), Christopher Persichilli (UC Irvine)
on 4 Feb 2019; 22:52 UT
Credential Certification: Christian Glaser (christian.glaser@uci.edu)
Subjects: Neutrinos, Gamma-Ray Burst
The ARIANNA collaboration (http://arianna.ps.uci.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). The IceCube observatory reported an upper limit on the neutrino fluence of 0.436 x GeV cm^-2 for neutrino energies between 100 TeV to 20 PeV (ATel #12395).
The ARIANNA high-energy neutrino detector performed a search for neutrino events within the 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, same time window as used by IceCube). We did not find any neutrino candidate during this time period. Assuming an E^-2 spectrum (E^2 dN/dE) spectrum we derived a 90% CL upper limit on the neutrino fluence of 5.2 GeV cm^-2 in the neutrino energy range of 1e16eV - 1e20eV with a peak sensitivity around 1e18 eV.
ARIANNA is a high-energy Askaryan neutrino detector targeting neutrino energies above 10 PeV with a peek sensitivity around 1 EeV. The ARIANNA detector is currently in its pilot phase with autonomous and independent detector stations running at Moore's Bay on the Ross ice shelf and at the South Pole. During the time of GRB 190114C, four detector stations at Moore's Bay and one detector station at the South Pole were taking data but the GRB was outside the field-of-view of the South Pole detector station.
