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The High Energy View of FR0 Radio Galaxies

1
Department of Physics and Astronomy, University of Southampton, Highfield SO171BJ, UK
2
Department of Physics, University of Turin, via Pietro Giuria 1, I-10125 Torino, Italy
3
INAF—Astrophysics and Space Science Observatory of Bologna, Via Gobetti 101, I-40129 Bologna, Italy
4
Department of Physics and Astronomy, University of Bologna, Via Gobetti 93/2, 40129 Bologna, Italy
5
INAF—Institute of Radio Astronomy, Bologna, Via Gobetti 101, I-40129 Bologna, Italy
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INAF—Observatory of Turin, via Osservatorio 20, 10025 Pino Torinese, Italy
*
Author to whom correspondence should be addressed.
Galaxies 2019, 7(3), 76; https://doi.org/10.3390/galaxies7030076
Received: 22 June 2019 / Revised: 30 August 2019 / Accepted: 2 September 2019 / Published: 5 September 2019
(This article belongs to the Special Issue Radio Galaxies at TeV Energies)
A new class of low-power compact radio sources with limited jet structures, named FR 0, is emerging from recent radio-optical surveys. This abundant population of radio galaxies, five times more numerous than FR Is in the local Universe (z < 0.05), represent a potentially interesting target at high and very-high energies (greater than 100 GeV), as demonstrated by a single case of Fermi detection. Furthermore, these radio galaxies have been recently claimed to contribute non-negligibly to the extra-galactic γ-ray background and to be possible cosmic neutrino emitters. Here, we review the radio through X-ray properties of FR 0s to predict their high-energy emission (from MeV to TeV), in light of the near-future facilities operating in this band. View Full-Text
Keywords: active galactic nuclei; radio galaxies; gamma-rays; jets; emission: non-thermal; GeV γ-rays; TeV γ-rays active galactic nuclei; radio galaxies; gamma-rays; jets; emission: non-thermal; GeV γ-rays; TeV γ-rays
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Baldi, R.D.; Torresi, E.; Migliori, G.; Balmaverde, B. The High Energy View of FR0 Radio Galaxies. Galaxies 2019, 7, 76.

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