Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 42: Neutrino astronomy II

T 42.2: Talk

Tuesday, March 16, 2021, 16:15–16:30, Tq

Studies of systematic uncertainty effects on IceCube's real-time angular uncertainty — •Cristina Lagunas Gualda for the IceCube collaboration — DESY Zeuthen

Sources of astrophysical neutrinos can be potentially discovered through the detection of neutrinos in coincidence with electromagnetic or gravitational waves. Real-time alerts generated by IceCube play an important role in this search since they act as a trigger for follow-up observations with instruments sensitive to other wavelengths.

Once a high-energy event is detected by the IceCube real-time program, a sophisticated and time-consuming method is run in order to calculate an accurate localization. To investigate the effect of systematic uncertainties on the uncertainty estimate of the location, we simulate a set of high-energy events with a wide range of directions for different ice model realizations. This makes use of a novel simulation tool, which allows the treatment of systematic uncertainties with multiple and continuously varied nuisance parameters. Then those events are reconstructed using various reconstruction methods. The aim of this study is to include systematic uncertainties in a robust way in the real-time direction and error estimates.