What question did this study set out to answer?

To report and characterize an extraordinarily high-energy cosmic neutrino detection recorded by the KM3NeT deep-sea telescope in the Mediterranean Sea.

February 12, 2025NatureOpen Access

Observation of an ultra-high-energy cosmic neutrino with KM3NeT

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To report and characterize an extraordinarily high-energy cosmic neutrino detection recorded by the KM3NeT deep-sea telescope in the Mediterranean Sea.
Monitored ultra-high-energy cosmic particle interactions using the KM3NeT deep-sea neutrino telescope in the Mediterranean Sea.
Reconstructed the energy deposition and trajectory profile of a near-horizontal muon track traversing the detector volume.
Detected a near-horizontal muon event with an estimated energy of 120 (+110/-60) PeV.
Identified that the parent neutrino possessed an energy surpassing 120 PeV, well above the previously measured cosmic neutrino energy spectrum and consistent with either a novel cosmic accelerator or a cosmogenic neutrino.

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Implication

Observational analysis reveals a record-breaking 120-PeV muon event in deep-sea detector data, suggesting novel cosmic acceleration mechanisms or a cosmogenic origin.

Cite This Study

Aiello et al. (2025) studied this question.

synapsesocial.com/papers/6a10a90e70f73a8171fcb0f0 https://doi.org/10.1038/s41586-024-08543-1

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Implication

Observational analysis reveals a record-breaking 120-PeV muon event in deep-sea detector data, suggesting novel cosmic acceleration mechanisms or a cosmogenic origin.

Observation of an ultra-high-energy cosmic neutrino with KM3NeT

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Discussion

Implication

Cite This Study

Observation of an ultra-high-energy cosmic neutrino with KM3NeT

Key Points

Discussion

Implication

Cite This Study

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