Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data
The University of Adelaide · University of Canterbury · +38 more institutions
Abstract
A search for high-energy neutrinos interacting within the IceCube detector between 2010 and 2012 provided the first evidence for a high-energy neutrino flux of extraterrestrial origin. Results from an analysis using the same methods with a third year (2012-2013) of data from the complete IceCube detector are consistent with the previously reported astrophysical flux in the 100 TeV-PeV range at the level of 10(-8) GeV cm-2 s-1 sr-1 per flavor and reject a purely atmospheric explanation for the combined three-year data at 5.7σ. The data are consistent with expectations for equal fluxes of all three neutrino flavors and with isotropic arrival directions, suggesting either numerous or spatially extended sources.…
Citation impact
- FWCI
- 259.80
- Percentile
- 100%
- References
- 71
Authors
297Topics & keywords
- Neutrino
- Physics
- Nuclear physics
- Energy (signal processing)
- Neutrino detector
- Astronomy
- Particle physics
- Astrophysics
- Affordable and clean energy
Funding
- NSNational Science Foundation
- UDU.S. Department of Energy
- UOUniversity of Wisconsin-Madison
- PPolarforskningssekretariatet
- CCCompute Canada
- WCWestern Canada Research Grid
- UOUniversity of Oxford
- NRNational Research Foundation
- DFDeutsche Forschungsgemeinschaft
- SNSchweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- DGDanmarks Grundforskningsfond
- BFBundesministerium für Bildung und Forschung
- FDFonds De La Recherche Scientifique - FNRS
- BFBelgian Federal Science Policy Office
- FWFonds Wetenschappelijk Onderzoek
- NRNational Research Foundation of Korea
- KOKnut och Alice Wallenbergs Stiftelse
- VVetenskapsrådet
- VRVlaamse regering
- HAHelmholtz Alliance for Astroparticle Physics
- NSNatural Sciences and Engineering Research Council of Canada
- SAScience and Technology Facilities CouncilAward: ST/J000507/1
- JSJapan Society for the Promotion of Science
- MFMarsden Fund
- OOOffice of Polar Programs