Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 67: Neutrino astronomy III

T 67.3: Talk

Wednesday, March 17, 2021, 16:30–16:45, Tq

Constraining populations of astrophysical neutrino sources with IceCube — •Chiara Bellenghi — Technische Universität München, Physik-Department, James-Franck-Str. 1, 85748 Garching

The IceCube neutrino telescope has provided precise measurements of the diffuse flux of high-energy astrophysical neutrinos. However, the sources of this signal have not been identified yet. The effort to identify point-like neutrino sources recently resulted in the development of a new analysis method that improves the accuracy of the search in the low-energy regime. In addition to the point-source search, the sky can also be tested for a significant excess of events from a population of sub-threshold sources. Such a signal from multiple weaker sources would be missed by analyses aiming at pointing only to the most significant one. The presentation will focus on the performance of this "hotspot population analysis".