Searches for Extended and Point-like Neutrino Sources with Four Years of IceCube Data
By I. C. M. Aartsen, M. Ackermann, J. Adams, J. Aguilar, M. Ahlers, M. Ahrens, D. Altmann, T. Anderson, C. Arguelles, T. Arlen and 293 more. 2014
176 citations recorded by the source corpus.
We present results on searches for point-like sources of neutrinos using four years of IceCube data, including the first year of data from the completed 86-string detector. The total livetime of the combined dataset is 1,373 days. For an E$^{-2}$ spectrum the median sensitivity at 90\% C.L. is $\sim 10^{-12}$ TeV$^{-1}$cm$^{-2}$s$^{-1}$ for energies between 1 TeV$-$1 PeV in the northern sky and $\sim 10^{-11}$ TeV$^{-1}$cm$^{-2}$s$^{-1}$ for energies between 100 TeV $-$ 100 PeV in the southern sky. The sensitivity has improved from both the additional year of data and the introduction of improved reconstructions compared to previous publications. In addition, we present the first results from an all-sky search for extended sources of neutrinos. We update results of searches for neutrino emission from stacked catalogs of sources, and test five new catalogs; two of Galactic supernova remnants and three of active galactic nuclei. In all cases, the data are compatible with the background-only hypothesis, and upper limits on the flux of muon neutrinos are reported for the sources considered.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/0e2b66432dfe0f85e9760dc120275c2fe4513b37
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In Nuclear and High Energy Physics
Citations in the corpus
- The IceCube Realtime Alert System (2016, methodology): “Furthermore, future work will extend this program to flares arising from the entire sky on arbitrary time scales (the upper time scale is given by the results from the static point source search [22]).”
- Letter of intent for KM3NeT 2.0 (2016, background): “For comparison, the corresponding discovery potential for the IceCube detector [69] (blue line), and upper limits on particular sources for the ANTARES detector [70] (blue squares) are also shown.”
- 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).”
- Extending the Search for Muon Neutrinos Coincident with Gamma-Ray Bursts in IceCube Data (2017, methodology): “Similar constraints were calculated for simple power-law spectra consistent with IceCube’s observed astrophysical neutrino flux (Aartsen et al. 2014c, 2015b, 2015c, 2016c), concluding that 0.4% of the astrophysical neutrino flux can be the result of a GRB prompt, quasi-diffuse flux assuming no…”
- 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 Blazar TXS 0506+056 Associated with a High-energy Neutrino: Insights into Extragalactic Jets and Cosmic-Ray Acceleration (2018, background): “The most probable energy was found to be 290 TeV (311 TeV), with the 90% C.L. lower and upper limits being 183 TeV (200 TeV) and 4.3 PeV (7.5 PeV) respectively, assuming a spectral index of - 2.13 (2.0) for the diffuse astrophysical muon neutrino spectrum (Aartsen et al. 2014).”
- KM3MeT 2.0 Letter of intent for ARCA and ORCA (2016, background): “For comparison, the corresponding discovery potential for the IceCube detector [70] (blue line), and upper limits on particular sources for the ANTARES detector [71] (blue squares) are also shown.”