Implications of pc and kpc jet asymmetry to the cosmic ray acceleration

Abstract

We probe the role that the directional asymmetry, between relativistic outflows and kilo-parsec scale jets, play in the acceleration of cosmic rays. For this reason we use two powerful, nearby Active Galactic Nuclei (AGNs). These radio galaxies are atypical compared to the usual AGN as they contain ring-like features instead of hotspots. Our VLBI radio data have revealed a substantial misalignment between their small and large scale jets. Taking into account the overall information we have obtained about the AGNs themselves (VLA and VLBI radio data at 18 cm) and their clusters (X-ray observations) our study supports the present ideas of powerful radiogalaxies (radio quiet and radio loud) being sources of cosmic rays as well as their ability to accelarate the latter to ultra high energies.

arXiv comment4 pages, Conference HEPRO III

References in corpus (22)

• Measurement of the energy spectrum of cosmic rays above 10^18 eV using the Pierre Auger Observatory
• Correlation of the highest-energy cosmic rays with the positions of nearby active galactic nuclei
• High-energy cosmic-ray nuclei from high- and low-luminosity gamma-ray bursts and implications for multi-messenger astronomy
• The powerful outburst in Hercules A
• Ultra High Energy Cosmic Rays from Black Hole Jets of Radio Galaxies
• High-energy Cosmic Rays and Neutrinos from Semi-relativistic Hypernovae
• Simulations of cosmic ray feedback by AGN in galaxy clusters
• Measurement of the Flux of Ultra High Energy Cosmic Rays by the Stereo Technique
• A multiband study of Hercules A. II. Multifrequency VLA imaging
• Astrophysical Jets and Outflows
• Centaurus A as a source of extragalactic cosmic rays with arrival energies well beyond the GZK cutoff
• Modelling TeV gamma-ray emission from the kiloparsec-scale jets of Centaurus A and M87
• Ten milliparsec-scale structure of the nucleus region in Centaurus A
• Cosmic-ray Acceleration at Ultrarelativistic Shock Waves: Effects of a "Realistic" Magnetic Field Structure
• Cosmic Ray-Dominated AGN Jets and the Formation of X-ray Cavities in Galaxy Clusters
• Radio Quiet AGNs as Possible Sources of Ultra-high Energy Cosmic Rays
• Ultra-High Energy Cosmic Rays from Centaurus A: Jet Interaction with Gaseous Shells
• Ultra-High Energy Cosmic-Ray Acceleration in the Jet of Centaurus A
• Creation of the X-ray Cavity Jet and its Radio Lobe in M87/Virgo with Cosmic Rays; Relevance to Relic Radio Sources
• A multiband study of Hercules A. I. ROSAT observations of the intracluster medium
• Fossil AGN jets as ultra high energy particle accelerators
• Testing minimum energy with powerful radio sources in clusters of galaxies