Searching for High-Energy Neutrino Emission from Seyfert Galaxies in the Northern Sky with IceCube
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(Published version)
Date
2024
Authors
Liu, Q.
Abbasi, R.
Ackermann, M.
Adams, J.
Agarwalla, S.K.
Aguilar, J.A.
Ahlers, M.
Alameddine, J.M.
Amin, N.M.
Andeen, K.
Editors
Advisors
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Conference paper
Citation
Proceedings of the 38th International Cosmic Ray Conference (ICRC 2023), as published in Proceedings of Science, 2024, vol.444, pp.1052-1-1052-11
Statement of Responsibility
The IceCube Collaboration
Conference Name
38th International Cosmic Ray Conference (ICRC) (26 Jul 2023 - 3 Aug 2023 : Nagoya, Japan)
Abstract
The recent detection of TeVneutrino emission from the nearby active galaxyNGC1068 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 2.7𝜎 significance, and at the same time constrain the collective neutrino emission from our source list.
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Published on: September 27, 2024
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© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).