Results from IceCube Follow-ups of the Ultra-high Energy KM3NeT Neutrino

ORAL

Abstract

On February 13, 2023, the KM3NeT detector, a soon-to-be cubic-kilometer neutrino telescope in the Mediterranean Sea, observed the highest-energy neutrino detected to date (~200 PeV), designated KM3-230213A. This measurement marks an important milestone for astroparticle physics, and its origins could provide insight into the highest-energy processes in the Universe. The IceCube Neutrino Observatory is a cubic-kilometer in-ice neutrino detector located at the geographic South Pole. Despite having an order of magnitude greater livetime and an order of magnitude greater effective area than KM3NeT, IceCube's highest-energy neutrinos are approximately 10 PeV. At the declination of KM3-230213A, IceCube is more sensitive than KM3NeT to neutrinos at energies from 1TeV to 1EeV. I will present results from three analyses aimed at identifying potential steady or transient neutrino sources in the direction of KM3-230213A's using data from IceCube.

*We gratefully acknowledge support from the U.S. National Science Foundation and international partners.

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Presenters

  • Alicia Mand

    • University of Wisconsin -- Madison

Authors

  • Alicia Mand

    • University of Wisconsin -- Madison

  • Riya Shah

    • Drexel University

  • Sarah Mancina

    • University of Padova