2025Natur.638..376K

Query : 2025Natur.638..376K

2025Natur.638..376K - Nature, 638, 376-382 (2025/February-0)

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

KM3NET COLLABORATION, AIELLO S., ALBERT A., ALHEBSI A.R., ALSHAMSI M., ALVES GARRE S., AMBROSONE A., AMELI F., ANDRE M., ANGHINOLFI M., APHECETCHE L., ARDID M., ARDID S., ARGUELLES C., ATMANI H., AUBLIN J., BADARACCO F., BAILLY-SALINS L., BARDACOVA Z., BARET B., BARIEGO-QUINTANA A., BECHERINI Y., BENDAHMAN M., BENFENATI GUALANDI F., BENHASSI M., BENNANI M., BENOIT D.M., BERBEE E., BERTIN V., BIAGI S., BOETTCHER M., BONANNO D., BOUASLA A.B., BOUMAAZA J., BOUTA M., BOUWHUIS M., BOZZA C., BOZZA R.M., BRANZAS H., BRETAUDEAU F., BREUHAUS M., BRUIJN R., BRUNNER J., BRUNO R., BUIS E., BUOMPANE R., BUSON S., BUSTO J., CAIFFI B., CALVO D., CAPONE A., CARENINI F., CARRETERO V., CARTRAUD T., CASTALDI P., CECCHINI V., CELLI S., CERISY L., CHABAB M., CHEN A., CHERUBINI S., CHIARUSI T., CIRCELLA M., COCIMANO R., COELHO J.A.B., COLEIRO A., COLONGES S., CONDORELLI A., CONIGLIONE R., COYLE P., CREUSOT A., CUTTONE G., D'AMICO A., DALLIER R., DE BENEDITTIS A., DE MARTINO B., DE WASSEIGE G., DECOENE V., DEL ROSSO I., DI MAURO L.S., DI PALMA I., DIAZ A.F., DIEGO-TORTOSA D., DISTEFANO C., DOMI A., DONZAUD C., DORNIC D., DRAKOPOULOU E., DROUHIN D., DUCOIN J.-G., DVORNICKY R., EBERL T., ECKEROVA E., EDDYMAOUI A., VAN EEDEN T., EFF M., VAN EIJK D., EL BOJADDAINI I., EL HEDRI S., ELLAJOSYULA V., ENZENHOFER A., FERRARA G., FILIPOVICV M.D., FILIPPINI F., FRANCIOTTI D., FUSCO L.A., GAGLIARDINI S., GAL T., GARCIA MENDEZ J., GARCIA SOTO A., GATIUS OLIVER C., GEISSELBRECHT N., GENTON E., GHADDARI H., GIALANELLA L., GIBSON B.K., GIORGIO E., GOOS I., GOSWAMI P., GOZZINI S.R., GRACIA R., GRAF K., GUIDI C., GUILLON B., GUTIERREZ M., HAACK C., VAN HAREN H., HEIJBOER A., HENNIG L., HENRY S., HERNANDEZ-REY J.J., IDRISSI IBNSALIH W., ILIONI A., ILLUMINATI G., JOLY D., DE JONG M., DE JONG P., JUNG B.J., KALACZYNSKI P., KALEKIN O., KAMP N., KATZ U.F., KISTAURI G., KOPPER C., KOUCHNER A., KOVALEV Y.Y., KUEVIAKOE V., KULIKOVSKIY V., KVATADZE R., LABALME M., LAHMANN R., LAMOUREUX M., LANCELIN S., LAROSA G., LASTORIA C., LAZAR J., LAZO A., LE STUM S., LEHAUT G., LEMAITRE V., LEONORA E., LESSING N., LEVI G., LINCETTO M., LINDSEY CLARK M., LONGHITANO F., LUMB N., MAGNANI F., MAJUMDAR J., MALERBA L., MAMEDOV F., MANFREDA A., MARCONI M., MARGIOTTA A., MARINELLI A., MARKOU C., MARTIN L., MARZAIOLI F., MASTRODICASA M., MASTROIANNI S., MAURO J., MIELE G., MIGLIOZZI P., MIGNECO E., MITSOU M.L., MOLLO C.M., MONGELLI M., MORALES-GALLEGOS L., MOUSSA A., MOZUN MATEO I., MULLER R., MUSONE M.R., MUSUMECI M., NAVAS S., NAYERHODA A., NICOLAU C.A., NKOSI B., O FEARRAIGH B., OLIVIERO V., ORLANDO A., OUKACHA E., PAESANI D., PALACIOS GONZALEZ J., PAPALASHVILI G., PARIES C., PARISI V., PASTOR GOMEZ E.J., PASTORE C., PAUN A.M., PAVALAS G.E., PENA MARTINEZ S., PERRIN-TERRIN M., PESTEL V., PESTES R., PFEIFFER L., PIATTELLI P., PLAVIN A., POIRE C., POPA V., PRADIER T., PRADO J., PULVIRENTI S., QUIROZ-RANGEL C.A., RANDAZZO N., RAZZAQUE S., REA I.C., REAL D., RICCOBENE G., ROBINSON J., ROMANOV A., ROS E., SAINA A., SALESA GREUS F., SAMTLEBEN D.F.E., SANCHEZ LOSA A., SANFILIPPO S., SANGUINETI M., SANTONOCITO D., SAPIENZA P., SCHMELLING J., SCHNABEL J., SCHUMANN J., SCHUTTE H.M., SENECA J., SENNAN N., SEVLE P., SGURA I., SHANIDZE R., SHARMA A., SHITOV Y., SIMKOVIC F., SIMONELLI A., SINOPOULOU A., SPISSO B., SPURIO M., STAVROPOULOS D., STEKL I., TAIUTI M., TAYALATI Y., THIERSEN H., THOUDAM S., TOSTA E MELO I., TROCME B., TSOURAPIS V., TUDORACHE A., TZAMARIUDAKI E., UKLEJA A., VACHERET A., VALSECCHI V., VAN ELEWYCK V., VANNOYE G., VASILEIADIS G., VAZQUEZ DE SOLA F., VERILHAC C., VEUTRO A., VIOLA S., VIVOLO D., VAN VLIET A., WEN A.Y., DE WOLF E., LHENRY-YVON I., ZAVATARELLI S., ZEGARELLI A., ZITO D., ZORNOZA J.D., ZUNIGA J. and ZYWUCKA N.

Abstract (from CDS):

The detection of cosmic neutrinos with energies above a teraelectronvolt (TeV) offers a unique exploration into astrophysical phenomena . Electrically neutral and interacting only by means of the weak interaction, neutrinos are not deflected by magnetic fields and are rarely absorbed by interstellar matter: their direction indicates that their cosmic origin might be from the farthest reaches of the Universe. High-energy neutrinos can be produced when ultra-relativistic cosmic-ray protons or nuclei interact with other matter or photons, and their observation could be a signature of these processes. Here we report an exceptionally high-energy event observed by KM3NeT, the deep-sea neutrino telescope in the Mediterranean Sea , which we associate with a cosmic neutrino detection. We detect a muon with an estimated energy of $12{0}_{-60}^{+110}$ petaelectronvolts (PeV). In light of its enormous energy and near-horizontal direction, the muon most probably originated from the interaction of a neutrino of even higher energy in the vicinity of the detector. The cosmic neutrino energy spectrum measured up to now falls steeply with energy. However, the energy of this event is much larger than that of any neutrino detected so far. This suggests that the neutrino may have originated in a different cosmic accelerator than the lower-energy neutrinos, or this may be the first detection of a cosmogenic neutrino , resulting from the interactions of ultra-high-energy cosmic rays with background photons in the Universe.


Abstract Copyright: 2025 The Author(s)

Journal keyword(s):

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME KM3-230213A ev 06 17 -07.8           ~ 17 0

Query : 2025Natur.638..376K

Basic data :
NAME KM3-230213A -- Transient Event
Other object types: otypes_help 		ev (2025Natur)
ICRS coord. (ep=J2000) : 		06 17 12.0 -07 48 00 [ ] E 2025Natur.638..376K
FK4 coord. (ep=B1950 eq=1950) : 		06 14 47.4 -07 46 50 [ ]
Gal coord. (ep=J2000) : 		216.0603 -11.1350 [ ]
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Identifiers (1) :
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NAME KM3-230213A

References (17 between 1850 and 2026) (Total 17)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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