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Title: One-point fluctuation analysis of the high-energy neutrino sky

Abstract

We perform the first one-point fluctuation analysis of the high-energy neutrino sky. This method reveals itself to be especially suited to contemporary neutrino data, as it allows to study the properties of the astrophysical components of the high-energy flux detected by the IceCube telescope, even with low statistics and in the absence of point source detection. Besides the veto-passing atmospheric foregrounds, we adopt a simple model of the high-energy neutrino background by assuming two main extra-galactic components: star-forming galaxies and blazars. By leveraging multi-wavelength data from Herschel and Fermi , we predict the spectral and anisotropic probability distributions for their expected neutrino counts in IceCube. We find that star-forming galaxies are likely to remain a diffuse background due to the poor angular resolution of IceCube, and we determine an upper limit on the number of shower events that can reasonably be associated to blazars. We also find that upper limits on the contribution of blazars to the measured flux are unfavourably affected by the skewness of the blazar flux distribution. One-point event clustering and likelihood analyses of the IceCube HESE data suggest that this method has the potential to dramatically improve over more conventional model-based analyses, especially for the nextmore » generation of neutrino telescopes.« less

Authors:
;  [1];  [2]
  1. GRAPPA Institute, University of Amsterdam, Science Park 904, 1098 XH Amsterdam (Netherlands)
  2. Niels Bohr International Academy, Niels Bohr Institute, Blegdamsvej 17, 2100 Copenhagen (Denmark)
Publication Date:
OSTI Identifier:
22679947
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 03; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANISOTROPY; ASTROPHYSICS; ASYMMETRY; DETECTION; DISTRIBUTION; EXTENSIVE AIR SHOWERS; FLUCTUATIONS; GALAXIES; ICECUBE NEUTRINO DETECTOR; NEUTRINOS; POINT SOURCES; PROBABILITY; RESOLUTION; STARS; STATISTICS; TELESCOPES; WAVELENGTHS

Citation Formats

Feyereisen, Michael R., Ando, Shin'ichiro, and Tamborra, Irene, E-mail: m.r.feyereisen@uva.nl, E-mail: tamborra@nbi.ku.dk, E-mail: s.ando@uva.nl. One-point fluctuation analysis of the high-energy neutrino sky. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/03/057.
Feyereisen, Michael R., Ando, Shin'ichiro, & Tamborra, Irene, E-mail: m.r.feyereisen@uva.nl, E-mail: tamborra@nbi.ku.dk, E-mail: s.ando@uva.nl. One-point fluctuation analysis of the high-energy neutrino sky. United States. doi:10.1088/1475-7516/2017/03/057.
Feyereisen, Michael R., Ando, Shin'ichiro, and Tamborra, Irene, E-mail: m.r.feyereisen@uva.nl, E-mail: tamborra@nbi.ku.dk, E-mail: s.ando@uva.nl. Wed . "One-point fluctuation analysis of the high-energy neutrino sky". United States. doi:10.1088/1475-7516/2017/03/057.
@article{osti_22679947,
title = {One-point fluctuation analysis of the high-energy neutrino sky},
author = {Feyereisen, Michael R. and Ando, Shin'ichiro and Tamborra, Irene, E-mail: m.r.feyereisen@uva.nl, E-mail: tamborra@nbi.ku.dk, E-mail: s.ando@uva.nl},
abstractNote = {We perform the first one-point fluctuation analysis of the high-energy neutrino sky. This method reveals itself to be especially suited to contemporary neutrino data, as it allows to study the properties of the astrophysical components of the high-energy flux detected by the IceCube telescope, even with low statistics and in the absence of point source detection. Besides the veto-passing atmospheric foregrounds, we adopt a simple model of the high-energy neutrino background by assuming two main extra-galactic components: star-forming galaxies and blazars. By leveraging multi-wavelength data from Herschel and Fermi , we predict the spectral and anisotropic probability distributions for their expected neutrino counts in IceCube. We find that star-forming galaxies are likely to remain a diffuse background due to the poor angular resolution of IceCube, and we determine an upper limit on the number of shower events that can reasonably be associated to blazars. We also find that upper limits on the contribution of blazars to the measured flux are unfavourably affected by the skewness of the blazar flux distribution. One-point event clustering and likelihood analyses of the IceCube HESE data suggest that this method has the potential to dramatically improve over more conventional model-based analyses, especially for the next generation of neutrino telescopes.},
doi = {10.1088/1475-7516/2017/03/057},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 03,
volume = 2017,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}