J. P. Lundquist (Author), Lukas Merten (Author), Serguei Vorobiov (Author), Margot Boughelilba (Author), Anita Reimer (Author), Paolo Da Vela (Author), Fabrizio Tavecchio (Author), Giacomo Bonnoli (Author), Chiara Righi (Author)

Abstract

Recently, it has been shown that relatively low luminosity Fanaroff-Riley type 0 (FR-0) radio galaxies are a good candidate source class for a predominant fraction of cosmic rays (CR) accelerated to ultra-high energies (UHE, E>10[sup]18 eV). FR-0s can potentially provide a significant fraction of the UHECR energy density as they are much more numerous in the local universe than more energetic radio galaxies such as FR-1s or FR-2s (up to a factor of ∼5 with z≤0.05 compared to FR-1s). In the present work, UHECR mass composition and energy spectra at the FR-0 sources are estimated by fitting simulation results to the published Pierre Auger Observatory data. This fitting is done using a simulated isotropic sky distribution extrapolated from the measured FR-0 galaxy properties and propagating CRs in plausible extragalactic magnetic field configurations using the CRPropa3 framework. In addition, we present estimates of the fluxes of secondary photons and neutrinos created in UHECR interactions with cosmic photon backgrounds during CR propagation. With this approach, we aim to investigate the properties of the sources with the help of observational multi-messenger data.

Keywords

jetted active galaxies;FR-0 radiogalaxies;ultra-high energy cosmic rays;extragalactic magnetic fields;UHECR propagation;UHECR interactions;cosmogenic photons;cosmogenic neutrinos;

Data

Language: English
Year of publishing:
Typology: 1.08 - Published Scientific Conference Contribution
Organization: UNG - University of Nova Gorica
UDC: 539.1
COBISS: 73060355 Link will open in a new window
ISSN: 1824-8039
Views: 1421
Downloads: 0
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Other data

URN: URN:SI:UNG
Pages: str. 1-8
Chronology: 2022
ID: 13283801
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