Measurement of the astrophysical diffuse neutrino flux in a combined fit of IceCube's high energy neutrino data

Understand

The IceCube Neutrino Observatory has discovered a diffuse neutrino flux of astrophysical origin and measures its properties in various detection channels.

• With more than 10 years of data, we use multiple data samples from different detection channels for a combined fit of the diffuse astrophysical neutrino spectrum.
• This leverages the complementary information of different neutrino event signatures.
• For the first time, we use a coherent modelling of the signal and background, as well as the detector response and corresponding systematic uncertainties.