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Heidelberg 2022 – scientific programme

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T: Fachverband Teilchenphysik

T 71: Neutrino Astronomy 3

T 71.9: Talk

Wednesday, March 23, 2022, 18:15–18:30, T-H30

PLEnuM: A world-wide monitoring system of high-energy astrophysical neutrinos — •Lisa Schumacher1, Matteo Agostini2, Mauricio Bustamante3, Foteini Oikonomou4, and Elisa Resconi11ECP, TU Munich, GER — 2UCL, London, UK — 3NBI, Copenhagen, DEN — 4NTNU, Trondheim, NOR

The discovery of high-energy astrophysical neutrinos by IceCube has shaped neutrino astronomy in the recent years. However, the observation rate of astrophysical neutrinos in the TeV-PeV energy range remains small, such that various questions about high-energy neutrinos and their astrophysical origin remain open. This situation will improve when new neutrino telescopes will come online in the next years: KM3NeT, Baikal-GVD and P-ONE in the Northern Hemisphere, as well as IceCube-Gen2 as extension of IceCube in the Southern Hemisphere. In order to answer our open questions, we propose the Planetary Neutrino Monitoring System (PLEnuM), a concept for a combined repository of world-wide high-energy neutrino observations. PLEnuM can reach more than four times the exposure available today by combining the exposures of the current and future neutrino telescopes distributed around the world. Depending on the declination, spectral index, and flavor, PLEnuM will improve the sensitivity to astrophysical neutrinos by up to two orders of magnitude. We present first estimates on the capability of PLEnuM to discover Galactic and extragalactic sources of astrophysical neutrinos and to characterize the diffuse flux of high-energy neutrinos in unprecedented detail.

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