Evidence for Neutrino Emission from X-Ray-bright Active Galactic Nuclei with IceCube
R. Abbasi; M. Ackermann; J. Adams; Sanjib Kumar Agarwalla; J. A. Aguilar; M. Ahlers; Jean-Marco Alameddine; S. Ali · 2026 · The Astrophysical Journal Letters
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Abstract
Abstract Recently, IceCube reported neutrino emission from the Seyfert galaxy NGC 1068. Using 13.1 yr of IceCube data, we present a follow-up search for neutrino sources in the northern sky. NGC 1068 remains the most significant neutrino source among 110 preselected gamma-ray emitters while also being spatially compatible with the most significant location in the northern sky. Its energy spectrum is characterized by an unbroken power-law with spectral index γ = 3.4 ± 0.2. Consistent with previous results, the observed neutrino flux exceeds its gamma-ray counterpart by at least 2 orders of magn
Abstract by R. Abbasi; M. Ackermann; J. Adams; Sanjib Kumar Agarwalla; J. A. Aguilar; M. Ahlers; Jean-Marco Alameddine; S. Ali, The Astrophysical Journal Letters (2026) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.3847/2041-8213/ae4aad