Constraints on Galactic Neutrino Emission with Seven Years of IceCube Data

Understand

The origins of high-energy astrophysical neutrinos remain a mystery despite extensive searches for their sources.

• We present constraints from seven years of IceCube Neutrino Observatory muon data on the neutrino flux coming from the Galactic plane.
• This flux is expected from cosmic-ray interactions with the interstellar medium or near localized sources.
• Two methods were developed to test for a spatially-extended flux from the entire plane, both maximum likelihood fits but with different signal and background modeling techniques.