Searching for High-energy Neutrino Emission from Seyfert Galaxies in the Northern Sky with IceCube
(2023)
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- Authors
Lamoureux, Mathieu 
- et. al.
- Abstract
- The recent detection of TeV neutrino emission from the nearby active galaxy NGC 1068 by IceCube suggests that AGN could make a sizable contribution to the total high-energy cosmic neutrino flux. The absence of TeV gamma rays from NGC 1068, indicates neutrino production originates in the innermost region of the AGN. Disk-corona models predict a correlation between neutrinos and keV X-rays in Seyfert galaxies, a subclass of AGN to which NGC 1068 belongs. Using 10 years of IceCube through-going track events, we report results from searches for neutrino signals from 27 additional sources in the Northern Sky by studying both the generic single power-law spectral assumption and spectra predicted by the disk-corona model. Our results show excesses of neutrinos associated with two sources, NGC 4151 and CGCG 420-015, at 2.7$\sigma$ significance, and at the same time constrain the collective neutrino emission from our source list.
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Citations
de Wasseige, G., Kruiswijk, K., Lamoureux, M., Raab, C., Vereecken, M., IceCube, & et al. (2023). Searching for High-energy Neutrino Emission from Seyfert Galaxies in the Northern Sky with IceCube. Proceedings of Science, ICRC2023. https://doi.org/10.22323/1.444.1052 (Original work published 2023)