| Title: |
Evidence for Neutrino Emission from X-Ray-bright Active Galactic Nuclei with IceCube |
| Authors: |
Abbasi, R; Ackermann, M; Adams, J; Agarwalla, SK; Aguilar, JA; Ahlers, M; Alameddine, JM; Ali, S; Amin, NM; Andeen, K; Argüelles, C; Ashida, Y; Athanasiadou, S; Axani, SN; Babu, R; Bai, X; Baines-Holmes, J; V., A Balagopal; Barwick, SW; Bash, S; Basu, V; Bay, R; Beatty, JJ; Tjus, J Becker; Behrens, P; Beise, J; Bellenghi, C; Benkel, B; BenZvi, S; Berley, D; Bernardini, E; Besson, DZ; Blaufuss, E; Bloom, L; Blot, S; Bodo, I; Bontempo, F; Motzkin, JY Book; Meneguolo, C Boscolo; Böser, S; Botner, O; Böttcher, J; Braun, J; Brinson, B; Brisson-Tsavoussis, Z; Burley, RT; Butterfield, D; Campana, MA; Carloni, K; Carpio, J; Chattopadhyay, S; Chau, N; Chen, Z; Chirkin, D; Choi, S; Clark, BA; Coleman, A; Coleman, P; Collin, GH; Borja, DA Coloma; Connolly, A; Conrad, JM; Cowen, DF; De Clercq, C; DeLaunay, JJ; Delgado, D; Delmeulle, T; Deng, S; Desiati, P; de Vries, KD; de Wasseige, G; DeYoung, T; Díaz-Vélez, JC; DiKerby, S; Ding, T; Dittmer, M; Domi, A; Draper, L; Dueser, L; Durnford, D; Dutta, K; DuVernois, MA; Ehrhardt, T; Eidenschink, L; Eimer, A; Eller, P; Ellinger, E; Elsässer, D; Engel, R; Erpenbeck, H; Esmail, W; Eulig, S; Evans, J; Evenson, PA; Fan, KL; Fang, K; Farrag, K; Fazely, AR; Fedynitch, A; Feigl, N |
| Source: |
The Astrophysical Journal Letters, vol 1000, iss 1 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2026 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
5106 Nuclear and Plasma Physics (for-2020); 5107 Particle and High Energy Physics (for-2020); 51 Physical Sciences (for-2020); 0201 Astronomical and Space Sciences (for); Astronomy & Astrophysics (science-metrix); 5101 Astronomical sciences (for-2020); 5109 Space sciences (for-2020) |
| Description: |
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 magnitude. Motivated by this disparity and the high X-ray luminosity of the source, we selected 47 X-ray-bright Seyfert galaxies from the Swift/BAT spectroscopic survey that were not included in the list of gamma-ray emitters. When testing this collection for neutrino emission, we observe a 3.3σ excess from an ensemble of 11 sources, with NGC 1068 excluded from the sample. Our results strengthen the evidence that X-ray-bright cores of active galactic nuclei are neutrino emitters. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
qt8vm1k5vr; https://escholarship.org/uc/item/8vm1k5vr; https://escholarship.org/content/qt8vm1k5vr/qt8vm1k5vr.pdf |
| DOI: |
10.3847/2041-8213/ae4aad |
| Availability: |
https://escholarship.org/uc/item/8vm1k5vr; https://escholarship.org/content/qt8vm1k5vr/qt8vm1k5vr.pdf; https://doi.org/10.3847/2041-8213/ae4aad |
| Rights: |
CC-BY |
| Accession Number: |
edsbas.DAA4DF91 |
| Database: |
BASE |