On the Potential Galactic Origin of the Ultra-high-energy Event KM3-230213A

@article{adriani2026potential,
  title = {{On the Potential Galactic Origin of the Ultra-high-energy Event KM3-230213A}},
  author = {O. Adriani and S. Aiello and A. Albert and A.R Alhebsi and M. Alshamsi and S. Alves Garre and Antonio Ambrosone and F. Ameli and M. Andre and L. Aphecetche and M. Ardid and S. Ardid and J. Aublin and F. Badaracco and L. Bailly-Salins and Zuzana Bardačová and B. Baret and A. Bariego-Quintana and Yvonne Becherini and M. Bendahman and F. Benfenati and M. Benhassi and M. Bennani and David M. Benoit and E. Berbee and E. Berti and Vincent Bertin and P. Betti and S. Biagi and M. Böttcher and D. Bonanno and S. Bottai and A. B. Bouasla and J. Boumaaza and M. Bouta and Mieke C. Bouwhuis and C. Bozza and R. M. Bozza and H. Brânzaş and F. Bretaudeau and Mischa Breuhaus and Ronald Bruijn and Jürgen Brunner and Riccardo Bruno and Ernst J. Buis and R. Buompane and Jose Busto and B. Caiffi and D. Calvo and A. Capone and F. Carenini and V. Carretero and T. Cartraud and P. Castaldi and V. Cecchini and S. Celli and Luc Cerisy and M. Chabab and Andrew W Chen and S. Cherubini},
  journal = {The Astrophysical Journal},
  year = {2026},
  month = may,
  doi = {10.3847/1538-4357/ade3b0},
  url = {https://doi.org/10.3847/1538-4357/ade3b0},
  note = {CC BY},
}

TY  - JOUR
TI  - On the Potential Galactic Origin of the Ultra-high-energy Event KM3-230213A
AU  - O. Adriani
AU  - S. Aiello
AU  - A. Albert
AU  - A.R Alhebsi
AU  - M. Alshamsi
AU  - S. Alves Garre
AU  - Antonio Ambrosone
AU  - F. Ameli
AU  - M. Andre
AU  - L. Aphecetche
AU  - M. Ardid
AU  - S. Ardid
AU  - J. Aublin
AU  - F. Badaracco
AU  - L. Bailly-Salins
AU  - Zuzana Bardačová
AU  - B. Baret
AU  - A. Bariego-Quintana
AU  - Yvonne Becherini
AU  - M. Bendahman
AU  - F. Benfenati
AU  - M. Benhassi
AU  - M. Bennani
AU  - David M. Benoit
AU  - E. Berbee
AU  - E. Berti
AU  - Vincent Bertin
AU  - P. Betti
AU  - S. Biagi
AU  - M. Böttcher
AU  - D. Bonanno
AU  - S. Bottai
AU  - A. B. Bouasla
AU  - J. Boumaaza
AU  - M. Bouta
AU  - Mieke C. Bouwhuis
AU  - C. Bozza
AU  - R. M. Bozza
AU  - H. Brânzaş
AU  - F. Bretaudeau
AU  - Mischa Breuhaus
AU  - Ronald Bruijn
AU  - Jürgen Brunner
AU  - Riccardo Bruno
AU  - Ernst J. Buis
AU  - R. Buompane
AU  - Jose Busto
AU  - B. Caiffi
AU  - D. Calvo
AU  - A. Capone
AU  - F. Carenini
AU  - V. Carretero
AU  - T. Cartraud
AU  - P. Castaldi
AU  - V. Cecchini
AU  - S. Celli
AU  - Luc Cerisy
AU  - M. Chabab
AU  - Andrew W Chen
AU  - S. Cherubini
PY  - 2026
DA  - 2026/05/22
JO  - The Astrophysical Journal
DO  - 10.3847/1538-4357/ade3b0
UR  - https://doi.org/10.3847/1538-4357/ade3b0
AB  - The KM3NeT observatory detected the most energetic neutrino candidate ever observed, with an energy between 72 PeV and 2.6 EeV at the 90% confidence level. The observed neutrino is likely of cosmic origin. In this article, it is investigated if the neutrino could have been produced within the Milky Way. Considering the low fluxes of the Galactic diffuse emission at these energies, the lack of a nearby potential Galactic particle accelerator in the direction of the event, and the difficulty of accelerating particles to such high energies in Galactic systems, we conclude that if the event is indeed cosmic, it is most likely of extragalactic origin.
SN  - 0004-637X
SN  - 1538-4357
ER  -