Searches for steady neutrino emission from 3FHLblazars using eight years of IceCube data from the Northern hemisphere

Understand

Located at the South Pole, the IceCube Neutrino Observatory is the world largest neutrino telescope, instrumenting one cubic kilometre of Antarctic ice at a depth between 1450m to 2450m.

• In 2013 IceCube reported the first observations of a diffuse astrophysical high-energy neutrino flux.
• Although the IceCube Collaboration has identified more than 100 high-energy neutrino events, the origin of this neutrino flux is still not known.
• Blazars, a subclass of Active Galactic Nuclei and one of the most powerful classes of objects in the Universe, have long been considered promising sources of high energy neutrinos.