FSRQ 3C 345: Upper limits from a neutrino search with IceCube
ATel #15637; Erik Blaufuss (U. Maryland) for the IceCube Collaboration
on 29 Sep 2022; 21:11 UT
Credential Certification: Erik Blaufuss (blaufuss@umd.edu)
The IceCube Collaboration (http://icecube.wisc.edu/) reports:
IceCube has performed a search for track-like muon neutrino events arriving from the direction of the FSRQ 3C 345 (ATel #15613) during its gamma-ray flare.
The search was performed using a time window of 14 days (2022-09-04 12:00:00.0 UTC to 2022-09-18 12:00:00.0 UTC) around the peak of the gamma-ray emission, during which IceCube was collecting good quality data.
We find that the data are consistent with atmospheric background expectations, with a p-value of 1. We accordingly derive a time-integrated muon-neutrino flux upper limit for this source of E^2 dN/ dE = 5.7 x 10^-2 GeV cm^-2 at 90% CL, under the assumption of an E^-2 power law. 90% of events IceCube would detect from a source at this declination with an E^-2 spectrum have energies in the approximate energy range between 650 GeV and 350 TeV.
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.
