IceCube Maps Milky Way in High-Energy Neutrinos With 5,160 Sensors Buried 2,450 Meters Deep
Updated
Updated · spacedaily.com · Jul 26
IceCube Maps Milky Way in High-Energy Neutrinos With 5,160 Sensors Buried 2,450 Meters Deep
3 articles · Updated · spacedaily.com · Jul 26
Summary
IceCube’s milestone was the first image of the Milky Way in high-energy neutrinos, tracing the galactic plane with particle detections rather than light.
5,160 optical modules on 86 strings reconstruct rare neutrino interactions from blue Cherenkov flashes in a cubic kilometre of Antarctic ice, with muon tracks giving the best directional precision.
The South Pole detector often uses Earth as a filter: upward-moving events from the Northern Hemisphere are far more likely to be neutrinos than atmospheric muons, though the highest-energy neutrinos can be absorbed by the planet.
Built between 2004 and 2010, the array was frozen permanently into boreholes 1,450 to 2,450 meters deep, creating a gigatonne-scale observatory that watches continuously.
The map extends IceCube’s earlier neutrino astronomy results, including the 2013 discovery of an astrophysical neutrino population and later source evidence tied to TXS 0506+056 and NGC 1068.