Journal
SCIENCE
Volume 342, Issue 6161, Pages 947-+Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1242856
Keywords
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Funding
- U.S. National Science Foundation-Office of Polar Programs
- U.S. National Science Foundation-Physics Division
- University of Wisconsin Alumni Research Foundation
- Grid Laboratory of Wisconsin (GLOW) grid infrastructure at the University of Wisconsin-Madison
- Open Science Grid (OSG) grid infrastructure
- U.S. Department of Energy
- National Energy Research Scientific Computing Center
- Louisiana Optical Network Initiative (LONI)
- Natural Sciences and Engineering Research Council of Canada
- WestGrid
- Compute/Calcul Canada
- Swedish Research Council
- Swedish Polar Research Secretariat
- Swedish National Infrastructure for Computing (SNIC)
- Knut and Alice Wallenberg Foundation, Sweden
- German Ministry for Education and Research (BMBF)
- Deutsche Forschungsgemeinschaft (DFG)
- Helmholtz Alliance for Astroparticle Physics (HAP)
- Research Department of Plasmas with Complex Interactions (Bochum), Germany
- Fund for Scientific Research (FNRS-FWO),
- FWO Odysseus programme
- Flanders Institute to encourage scientific and technological research in industry (IWT)
- Belgian Federal Science Policy Office (Belspo)
- University of Oxford, UK
- Marsden Fund, New Zealand
- Australian Research Council
- Japan Society for Promotion of Science (JSPS)
- Swiss National Science Foundation (SNSF), Switzerland
- National Research Foundation of Korea (NRF)
- Direct For Mathematical & Physical Scien [0969661] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1205809, 1306958] Funding Source: National Science Foundation
- Division Of Physics [0969661] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1205807, 1067905, 1205403, 1210052, 1307472, 1205796] Funding Source: National Science Foundation
- Grants-in-Aid for Scientific Research [25105005, 25105001] Funding Source: KAKEN
- Science and Technology Facilities Council [ST/J000507/1] Funding Source: researchfish
- STFC [ST/J000507/1] Funding Source: UKRI
Ask authors/readers for more resources
We report on results of an all-sky search for high-energy neutrino events interacting within the IceCube neutrino detector conducted between May 2010 and May 2012. The search follows up on the previous detection of two PeV neutrino events, with improved sensitivity and extended energy coverage down to about 30 TeV. Twenty-six additional events were observed, substantially more than expected from atmospheric backgrounds. Combined, both searches reject a purely atmospheric origin for the 28 events at the 4 sigma level. These 28 events, which include the highest energy neutrinos ever observed, have flavors, directions, and energies inconsistent with those expected from the atmospheric muon and neutrino backgrounds. These properties are, however, consistent with generic predictions for an additional component of extraterrestrial origin.
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