KM3-230213A and potential astrophysical sources
Per Arne Sevle Myhr (on behalf of the KM3NeT Collaboration)
TL;DR
The paper discusses the first detection of an ultra-high energy astrophysical neutrino by KM3NeT, reviews the global neutrino landscape, and explores potential sources and implications of this groundbreaking observation.
Contribution
It provides the first analysis of the ultra-high energy neutrino KM3-230213A and examines its implications for astrophysical sources and existing neutrino limits.
Findings
Detection of neutrino KM3-230213A above 100 PeV confirms ultra-high energy astrophysical neutrinos.
Highlights tension between this detection and limits from IceCube and Pierre Auger.
Discusses potential source scenarios and constrains source population features.
Abstract
The recent detection of the ultra-high energy neutrino KM3-230213A by KM3NeT/ARCA marks the first observation of an astrophysical neutrino with energy above 100 PeV, opening a new window to the ultra-high energy Universe. In this contribution, the current global ultra-high energy neutrino landscape in light of this event is reviewed, including tension of this observation with existing limits set by the IceCube and the Pierre Auger Observatories. Different scenarios are discussed to explain its origin. Recent efforts to constrain features of potential source populations using the inferred diffuse ultra-high energy neutrino flux are also presented.
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