Observation of high-energy neutrinos from the Galactic plane

The origin of high-energy cosmic rays, atomic nuclei that continuously impact Earth's atmosphere, is unknown. Because of deflection by interstellar magnetic fields, cosmic rays produced within the Milky Way arrive at Earth from random directions. However, cosmic rays interact with matter near t...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 2023-06, Vol.380 (6652), p.1338-1343
Hauptverfasser:	Abbasi, R, Ackermann, M, Adams, J, Aguilar, J A, Ahlers, M, Ahrens, M, Alameddine, J M, Alves, Jr, A A, Amin, N M, Andeen, K, Anderson, T, Anton, G, Argüelles, C, Ashida, Y, Athanasiadou, S, Axani, S, Bai, X, Balagopal V, A, Barwick, S W, Basu, V, Baur, S, Bay, R, Beatty, J J, Becker, K-H, Tjus, J Becker, Beise, J, Bellenghi, C, Benda, S, BenZvi, S, Berley, D, Bernardini, E, Besson, D Z, Binder, G, Bindig, D, Blaufuss, E, Blot, S, Boddenberg, M, Bontempo, F, Book, J Y, Borowka, J, Böser, S, Botner, O, Böttcher, J, Bourbeau, E, Bradascio, F, Braun, J, Brinson, B, Bron, S, Brostean-Kaiser, J, Burley, R T, Busse, R S, Campana, M A, Carnie-Bronca, E G, Chen, C, Chen, Z, Chirkin, D, Choi, K, Clark, B A, Clark, K, Classen, L, Coleman, A, Collin, G H, Connolly, A, Conrad, J M, Coppin, P, Correa, P, Cowen, D F, Cross, R, Dappen, C, Dave, P, De Clercq, C, DeLaunay, J J, López, D Delgado, Dembinski, H, Deoskar, K, Desai, A, Desiati, P, de Vries, K D, de Wasseige, G, DeYoung, T, Diaz, A, Díaz-Vélez, J C, Dittmer, M, Dujmovic, H, Dunkman, M, DuVernois, M A, Ehrhardt, T, Eller, P, Engel, R, Erpenbeck, H, Evans, J, Evenson, P A, Fan, K L, Fazely, A R, Fedynitch, A, Feigl, N, Fiedlschuster, S, Fienberg, A T, Finley, C, Fischer, L
Format:	Artikel
Sprache:	eng
Schlagworte:	Active galaxies Emissions Galaxy distribution Gamma emission Gamma rays High energy astronomy Milky Way Neutrinos Science & Technology - Other Topics
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Zusammenfassung:	The origin of high-energy cosmic rays, atomic nuclei that continuously impact Earth's atmosphere, is unknown. Because of deflection by interstellar magnetic fields, cosmic rays produced within the Milky Way arrive at Earth from random directions. However, cosmic rays interact with matter near their sources and during propagation, which produces high-energy neutrinos. We searched for neutrino emission using machine learning techniques applied to 10 years of data from the IceCube Neutrino Observatory. By comparing diffuse emission models to a background-only hypothesis, we identified neutrino emission from the Galactic plane at the 4.5σ level of significance. The signal is consistent with diffuse emission of neutrinos from the Milky Way but could also arise from a population of unresolved point sources.
ISSN:	0036-8075 1095-9203 1095-9203
DOI:	10.1126/science.adc9818