Evidence of Neutrino Emission from X-ray Bright Seyfert Galaxies with IceCube

The IceCube Neutrino Observatory has detected evidence for TeV neutrinos from NGC 1068, a nearby Seyfert galaxy. This discovery suggests that active galactic nuclei may play a significant role as sources of high-energy astrophysical neutrinos. Interestingly, the absence of the expected TeV gamma-ray flux indicates that these gamma-rays could be effectively obscured at their production site, with the hot coronal environment near the Seyfert galaxy’s core being a plausible location for this attenuation. Theoretical models suggest that the properties of the corona—and thus the production of neutrinos—can be inferred from the galaxy’s intrinsic X-ray luminosity. In this presentation, we report our search for neutrino emission from a sample of X-ray bright Seyfert galaxies selected from the BASS survey. We have employed a disc-corona model to predict the neutrino flux, improving the sensitivity of our search, and compared this model to the more traditional power-law flux assumption. Our stacking analysis shows a 3$\sigma$ neutrino emission signal from the catalog's collective sources.

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Publication Details

Published
2025-09-24
DOI
https://doi.org/10.22323/1.501.1219
Citations
2
Primary Topic
Astrophysics and Cosmic Phenomena
Type
article
Field-Weighted Citation Impact
3.74

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Evidence of Neutrino Emission from X-ray Bright Seyfert Galaxies with IceCube

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2 citations
Astrophysics and Cosmic Phenomena
3.74
article

Evidence of Neutrino Emission from X-ray Bright Seyfert Galaxies with IceCube

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article en
2 citations

Abstract

The IceCube Neutrino Observatory has detected evidence for TeV neutrinos from NGC 1068, a nearby Seyfert galaxy. This discovery suggests that active galactic nuclei may play a significant role as sources of high-energy astrophysical neutrinos. Interestingly, the absence of the expected TeV gamma-ray flux indicates that these gamma-rays could be effectively obscured at their production site, with the hot coronal environment near the Seyfert galaxy’s core being a plausible location for this attenuation. Theoretical models suggest that the properties of the corona—and thus the production of neutrinos—can be inferred from the galaxy’s intrinsic X-ray luminosity. In this presentation, we report our search for neutrino emission from a sample of X-ray bright Seyfert galaxies selected from the BASS survey. We have employed a disc-corona model to predict the neutrino flux, improving the sensitivity of our search, and compared this model to the more traditional power-law flux assumption. Our stacking analysis shows a 3$\sigma$ neutrino emission signal from the catalog's collective sources.

National Science Foundation, U.S. Department of Energy, University of Wisconsin-Madison, Nvidia, Michigan State University, Villum Fonden, Polarforskningssekretariatet, Marquette University, Western Canada Research Grid, European Commission, National Research Foundation, Deutsche Forschungsgemeinschaft, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Fonds De La Recherche Scientifique - FNRS, Belgian Federal Science Policy Office, Fonds Wetenschappelijk Onderzoek, National Research Foundation of Korea, Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, RWTH Aachen University, Chiba University, Helmholtz Alliance for Astroparticle Physics, Alliance de recherche numérique du Canada, College of Engineering, Michigan State University, Natural Sciences and Engineering Research Council of Canada, Deutsches Elektronen-Synchrotron, Japan Society for the Promotion of Science, Marsden Fund, Institute for Global Prominent Research, Chiba University, Office of Polar Programs, Office of Advanced Cyberinfrastructure, Office of Experimental Program to Stimulate Competitive Research
Openalex Percentile: Top 7%
Astrophysics and Cosmic Phenomena
3.74
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