Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data

By M. Aartsen, M. Ackermann, J. Adams, J. Aguilar, M. Ahlers, M. Ahrens, D. Altmann, T. Anderson, C. Arguelles, T. Arlen and 287 more. 2014

956 citations recorded by the source corpus.

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 $10^{-8}\, \mathrm{GeV}\, \mathrm{cm}^{-2}\, \mathrm{s}^{-1}\, \mathrm{sr}^{-1}$ per flavor and reject a purely atmospheric explanation for the combined 3-year data at $5.7 \sigma$. 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. The three-year dataset, with a livetime of 988 days, contains a total of 37 neutrino candidate events with deposited energies ranging from 30 to 2000 TeV. The 2000 TeV event is the highest-energy neutrino interaction ever observed.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3433661396b565734e780fb972a6824b8490d03e

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Tim Huege
2. Jonathan L. Feng
3. I. Galon
4. F. Kling
5. S. Trojanowski
6. E. Ros
7. J. Wilms
8. J. Zensus

In Nuclear and High Energy Physics

1. Tim Huege
2. Kohta Murase
3. Jonathan L. Feng
4. I. Galon
5. A. Fedynitch
6. Todor Stanev
7. S. Trojanowski
8. F. Kling

Citations in the corpus

• SEARCH FOR PROMPT NEUTRINO EMISSION FROM GAMMA-RAY BURSTS WITH ICECUBE (2014, background): “Very good neutrino energy resolution is possible for analyses requiring the interaction vertex to be contained within the instrumented volume (Aartsen et al. 2014a).”
• Coincidence of a high-fluence blazar outburst with a PeV-energy neutrino event (2016, background): “02 0 Note: Columns (1): Source name; (2,3): J2000 coordinates; (4): integrated γ-ray flux between 5 keV and 10 GeV; (5,6): maximum-possible and predicted number of neutrino detections; (7): number of PeV events that might be associated with each source based on a positional coincidence.”
• Measurements of prompt charm production cross-sections in pp collisions at s√=5TeV (2016, background): “Such neutrinos constitute an important background for experiments such as IceCube [15] searching for neutrinos produced from astrophysical sources.”
• All-sky Search for Time-integrated Neutrino Emission from Astrophysical Sources with 7 yr of IceCube Data (2016, methodology): “Similar to Aartsen et al. (2014e), BDTs are trained for two signal energy spectra of E−2 and E−2.7, and the cut on the linear combination of BDT scores is optimized to yield the best sensitivity and discovery potential over a wide range of energies with the final cut on BDT output.”
• The IceCube Realtime Alert System (2016, background): “These types of events tend to have good energy resolution ( δE/E ∼ 15% [11]), but have limited angular reconstruction in ice, with typical angular resolutions on the order of 10 − 15 ◦ [12].”
• A COMBINED MAXIMUM-LIKELIHOOD ANALYSIS OF THE HIGH-ENERGY ASTROPHYSICAL NEUTRINO FLUX MEASURED WITH ICECUBE (2015, methodology): “Modeling of the Astrophysical Component So far, the sources of the high-energy neutrino flux measured by IceCube have escaped identification (Aartsen et al. 2014e,f).”
• Letter of intent for KM3NeT 2.0 (2016, background): “Since the first IceCube discovery [12], several new analyses with updated event samples and different event selection strategies have been published [15, 20, 44].”
• OBSERVATION AND CHARACTERIZATION OF A COSMIC MUON NEUTRINO FLUX FROM THE NORTHERN HEMISPHERE USING SIX YEARS OF ICECUBE DATA (2016, methodology): “With this result we have further established the observation of an astrophysical neutrino signal (Aartsen et al. 2013a, 2014b, 2015c) in a second, largely independent detection channel.”
• Detecting and studying high-energy collider neutrinos with FASER at the LHC (2019, background): “Since their discovery at a nuclear reactor in 1956 [1], neutrinos have been detected from an variety of sources: beam dump experiments [2], cosmic ray interactions in the atmosphere [3– 5], the Sun [6, 7], the Earth [8], supernovae [9, 10], and other astrophysical bodies outside our galaxy [11].”