First all-flavor search for transient neutrino emission using 3-years of IceCube DeepCore data

Understand

Since the discovery of a flux of high-energy astrophysical neutrinos, searches for their origins have focused primarily at TeV-PeV energies.

• Compared to sub-TeV searches, high-energy searches benefit from an increase in the neutrino cross section, improved angular resolution on the neutrino direction, and a reduced background from atmospheric neutrinos and muons.
• However, the focus on high energy does not preclude the existence of sub-TeV neutrino emission where IceCube retains sensitivity.
• Here we present the first all-flavor search from IceCube for transient emission of low-energy neutrinos, focusing on the energy region of 5.6-100 GeV using three years of data obtained with the IceCube-DeepCore detector.