Science· 2013Q1
Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
- 1,628citations
- Q1SCImago
- 2013year
Short summary
The IceCube detector observed 28 high-energy neutrino events (30 TeV to PeV) between 2010-2012, significantly exceeding the expected atmospheric background and suggesting an extraterrestrial origin.
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Key points
- IceCube detected 28 high-energy neutrino events (30 TeV - PeV) between May 2010 and May 2012.
- This count is significantly higher than expected from atmospheric backgrounds.
- The combined data rejects a purely atmospheric origin for these events at the 4σ level.
- Event properties (flavors, directions, energies) are inconsistent with atmospheric sources but consistent with extraterrestrial origins.
AI-generated from the title and abstract; the full text is not read.
Abstract
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 4σ 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.
The authors' abstract, as published at the source. Science, 2013 · DOI ↗
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Field: Nuclear and High Energy Physics
Nuclear and High Energy PhysicsPhysics and Astronomy