Extragalactic Blazar Diffuse Population Interpretation for the KM3-230213A event

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F25%3A00389245" target="_blank" >RIV/68407700:21670/25:00389245 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.22323/1.501.0986" target="_blank" >https://doi.org/10.22323/1.501.0986</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22323/1.501.0986" target="_blank" >10.22323/1.501.0986</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Extragalactic Blazar Diffuse Population Interpretation for the KM3-230213A event

Popis výsledku v původním jazyce

On February 13, 2023, the KM3NeT/ARCA neutrino telescope detected an ultra-high-energy neutrino event, KM3-230213A, with an estimated energy in the hundreds of PeV range. In this study, we explore whether such a rare event can originate from a diffuse population of blazars. We simulate the neutrino and photon emission from blazar jets using the AM3 lepto-hadronic code, convolve the results with the Fermi-LAT blazar luminosity function, and evaluate the resulting diffuse flux. A likelihood analysis incorporating both KM3NeT and IceCube exposure data, as well as a gamma-ray background penalty from Fermi-LAT, allows us to constrain the parameter space of the baryonic loading and proton spectral index. We find that the KM3-230213A event could have been generated by a blazar diffuse flux, under physically motivated assumptions. This work demonstrates the strength of multi-messenger analyses and underlines the importance of joint neutrino observatory efforts in interpreting the high-energy sky.

Název v anglickém jazyce

Extragalactic Blazar Diffuse Population Interpretation for the KM3-230213A event

Popis výsledku anglicky

On February 13, 2023, the KM3NeT/ARCA neutrino telescope detected an ultra-high-energy neutrino event, KM3-230213A, with an estimated energy in the hundreds of PeV range. In this study, we explore whether such a rare event can originate from a diffuse population of blazars. We simulate the neutrino and photon emission from blazar jets using the AM3 lepto-hadronic code, convolve the results with the Fermi-LAT blazar luminosity function, and evaluate the resulting diffuse flux. A likelihood analysis incorporating both KM3NeT and IceCube exposure data, as well as a gamma-ray background penalty from Fermi-LAT, allows us to constrain the parameter space of the baryonic loading and proton spectral index. We find that the KM3-230213A event could have been generated by a blazar diffuse flux, under physically motivated assumptions. This work demonstrates the strength of multi-messenger analyses and underlines the importance of joint neutrino observatory efforts in interpreting the high-energy sky.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/LM2023063" target="_blank" >LM2023063: Podzemní laboratoř LSM - účast České republiky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

39th International Cosmic Ray Conference (ICRC2025)

ISBN

—

ISSN

1824-8039

e-ISSN

—

Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

PoS - Proceedings of Science, Sissa Medialab srl

Místo vydání

Trieste

Místo konání akce

Geneva

Datum konání akce

14. 7. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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