August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

【356】UHECR Acceleration in FR-0 Jetted Active Galaxies

Sep 1, 2021, 6:15 PM
Room D

Room D

Talk Nuclear, Particle- and Astrophysics (FAKT - TASK) Nuclear, Particle- & Astrophysics


Dr Lukas Merten (University of Innsbruck)


Fanaroff Riley (FR) 0 radio galaxies form a low luminosity extension of the well-established ultrahigh energy cosmic ray (UHECR) accelerators FR-1 and FR-2 galaxies. Their higher number density makes them interesting candidate sources for an isotropic contribution to the observed UHECR flux. Here, acceleration and survival of UHECR in prevailing conditions of the FR-0 environment are discussed.

The photon target fields are composed of a jet and a host galaxy component, based on multi-wavelength data from the FR0CAT. This allows to simulate all relevant UHECRs loss processes.

We show that FR-0 galaxies can contribute to the UHECR flux in a hybrid scenario based on Fermi-I order and gradual shear acceleration.

Primary authors

Dr Lukas Merten (University of Innsbruck) Margot Boughelilba (University of Innsbruck) Anita Reimer (University of Innsbruck) Paolo Da Vela (University of Innsbruck) Serguei Vorobiov (University of Nova Gorica) Fabrizio Tavecchio (Astronomical Observatory of Brera) Giacomo Bonnoli (Instituto de Astrofísica de Andalucía) Jon Paul Lundquist (University of Nova Gorica) Chiara Righi (Astronomical Observatory of Brera)

Presentation materials