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Title: A case for radio galaxies as the sources of IceCube's astrophysical neutrino flux

Abstract

We present an argument that radio galaxies (active galaxies with mis-aligned jets) are likely to be the primary sources of the high-energy astrophysical neutrinos observed by IceCube. In particular, if the gamma-ray emission observed from radio galaxies is generated through the interactions of cosmic-ray protons with gas, these interactions can also produce a population of neutrinos with a flux and spectral shape similar to that measured by IceCube. We present a simple physical model in which high-energy cosmic rays are confined within the volumes of radio galaxies, where they interact with gas to generate the observed diffuse fluxes of neutrinos and gamma rays. In addition to simultaneously accounting for the observations of Fermi and IceCube, radio galaxies in this model also represent an attractive class of sources for the highest energy cosmic rays.

Authors:
 [1]
  1. Fermi National Accelerator Laboratory, Center for Particle Astrophysics, Batavia, IL 60510 (United States)
Publication Date:
OSTI Identifier:
22679477
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2016; Journal Issue: 09; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; COSMIC RADIATION; EMISSION; GAMMA RADIATION; ICECUBE NEUTRINO DETECTOR; INTERACTIONS; NEUTRINOS; PROTONS; RADIO GALAXIES

Citation Formats

Hooper, Dan. A case for radio galaxies as the sources of IceCube's astrophysical neutrino flux. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/09/002.
Hooper, Dan. A case for radio galaxies as the sources of IceCube's astrophysical neutrino flux. United States. doi:10.1088/1475-7516/2016/09/002.
Hooper, Dan. Thu . "A case for radio galaxies as the sources of IceCube's astrophysical neutrino flux". United States. doi:10.1088/1475-7516/2016/09/002.
@article{osti_22679477,
title = {A case for radio galaxies as the sources of IceCube's astrophysical neutrino flux},
author = {Hooper, Dan},
abstractNote = {We present an argument that radio galaxies (active galaxies with mis-aligned jets) are likely to be the primary sources of the high-energy astrophysical neutrinos observed by IceCube. In particular, if the gamma-ray emission observed from radio galaxies is generated through the interactions of cosmic-ray protons with gas, these interactions can also produce a population of neutrinos with a flux and spectral shape similar to that measured by IceCube. We present a simple physical model in which high-energy cosmic rays are confined within the volumes of radio galaxies, where they interact with gas to generate the observed diffuse fluxes of neutrinos and gamma rays. In addition to simultaneously accounting for the observations of Fermi and IceCube, radio galaxies in this model also represent an attractive class of sources for the highest energy cosmic rays.},
doi = {10.1088/1475-7516/2016/09/002},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 09,
volume = 2016,
place = {United States},
year = {2016},
month = {9}
}

Works referencing / citing this record:

TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry: II. Additional sources
journal, February 2018