Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 18: Neutrino Astronomy 1

T 18.5: Vortrag

Montag, 21. März 2022, 17:15–17:30, T-H31

Neutrino source searches with DNN based Cascade Dataset in IceCube — •Mirco Hünnefeld for the IceCube collaboration — Astroparticle Physics WG Rhode, TU Dortmund University, Germany

IceCube has discovered a flux of astrophysical neutrinos and presented evidence for one neutrino source, a flaring blazar known as TXS 0506+056. However, the sources responsible for the majority of the astrophysical neutrino flux remain elusive. While charged-current muon-neutrino datasets (track events) are predominantly used for source searches due to their superior pointing resolution, cascade events (neutral-current interactions of all neutrino flavors and charged-current interactions of electron- and tau-neutrinos) allow to lower the energy threshold in the southern sky for IceCube. In this contribution, searches for neutrino sources are presented utilizing an improved cascade dataset that builds upon recent advances in deep learning based reconstruction methods. The resulting dataset improves IceCube's sensitivity in the southern neutrino sky and is thus particularly promising for the identification of neutrino production from the galactic plane.