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Title: A Case for Radio Galaxies as the Sources of IceCube's Astrophysical Neutrino Flux

Journal Article · · Journal of Cosmology and Astroparticle Physics
ORCiD logo [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, Chicago, IL (United States)

Here, 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.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1331784
Report Number(s):
FERMILAB-PUB-16-178-A; arXiv:1605.06504; 1464786
Journal Information:
Journal of Cosmology and Astroparticle Physics, Vol. 2016; ISSN 1475-7516
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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MAGIC observations of the giant radio galaxy M87 in a low-emission state between 2005 and 2007 text January 2012
The Cosmic Evolution of Fermi BL Lacertae Objects text January 2013
Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector text January 2013
Dissecting the Gamma-Ray Background in Search of Dark Matter text January 2013
UHECR Composition Models text January 2014
Star-forming galaxies as the origin of diffuse high-energy backgrounds: Gamma-ray and neutrino connections, and implications for starburst history text January 2014
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Pinpointing Extragalactic Neutrino Sources in Light of Recent IceCube Observations text January 2014
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Analysis of the cumulative neutrino flux from Fermi-LAT blazar populations using 3 years of IceCube data text January 2015
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Cited By (9)

TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry: II. Additional sources journal February 2018
A search for dark matter in the Galactic halo with HAWC journal February 2018
Angular power spectrum analysis on current and future high-energy neutrino data journal February 2019
Active galactic nuclei and the origin of IceCube's diffuse neutrino flux journal February 2019
High-energy neutrinos from FR0 radio galaxies? journal January 2018
Multimessenger tests of cosmic-ray acceleration in radiatively inefficient accretion flows journal October 2019
A Search for Dark Matter in the Galactic Halo with HAWC text January 2017
High-energy neutrinos from FR0 radio-galaxies? text January 2017
Angular power spectrum analysis on current and future high-energy neutrino data text January 2018

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