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Probing the Connection between IceCube Neutrinos and MOJAVE AGN

Abbasi, R.; Ackermann, M.; Adams, J.; Agarwalla, S. K.; Aguilar, J. A.; Ahlers, M.; Alameddine, J. M.; Amin, N. M.; Andeen, K.; Argüelles, C.; Ashida, Y.; Athanasiadou, S.; Ausborm, L.; Axani, S. N.; Bai, X.; V., A. Balagopal; Baricevic, M.; Barwick, S. W.; Bash, S.; ... mehr

Abstract:

Active galactic nuclei (AGN) are prime candidate sources of the high-energy, astrophysical neutrinos detected by IceCube. This is demonstrated by the real-time multimessenger detection of the blazar TXS 0506+056 and the recent evidence of neutrino emission from NGC 1068 from a separate time-averaged study. However, the production mechanism of the astrophysical neutrinos in AGN is not well established, which can be resolved via correlation studies with photon observations. For neutrinos produced due to photohadronic interactions in AGN, in addition to a correlation of neutrinos with high-energy photons, there would also be a correlation of neutrinos with photons emitted at radio wavelengths. In this work, we perform an in-depth stacking study of the correlation between 15 GHz radio observations of AGN reported in the MOJAVE XV catalog, and 10 yr of neutrino data from IceCube. We also use a time-dependent approach, which improves the statistical power of the stacking analysis. No significant correlation was found for both analyses, and upper limits are reported. When compared to the IceCube diffuse flux, at 100 TeV and for a spectral index of 2.5, the upper limits derived are ∼3% and ∼9% for the time-averaged and time-dependent cases, respectively.


Verlagsausgabe §
DOI: 10.5445/IR/1000175507
Veröffentlicht am 24.10.2024
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Experimentelle Teilchenphysik (ETP)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 01.10.2024
Sprache Englisch
Identifikator ISSN: 0004-637X, 1538-4357
KITopen-ID: 1000175507
Erschienen in The Astrophysical Journal
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 973
Heft 2
Seiten Art.-Nr.: 97
Vorab online veröffentlicht am 25.09.2024
Nachgewiesen in Scopus
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