Ultrahigh-energy Cosmic-ray Nuclei from Black Hole Jets: Recycling Galactic Cosmic Rays through Shear Acceleration

Abstract

We perform Monte Carlo simulations of transrelativistic shear acceleration dedicated to a jet-cocoon system of active galactic nuclei. A certain fraction of galactic cosmic rays in a halo is entrained, and sufficiently high-energy particles can be injected to the reacceleration process and further accelerated up to 100 EeV. We show that the shear reacceleration mechanism leads to a hard spectrum of escaping cosmic rays, $d{L}_E/dE\propto E^{-1}-E^0$, distinct from a conventional $E^{-2}$ spectrum. The supersolar abundance of ultrahigh-energy nuclei is achieved due to injections at TeV-PeV energies. As a result, we find that the highest-energy spectrum and mass composition can be reasonably explained by our model without contradictions with the anisotropy data.

10 pages, 7 figures, accepted for publication in PRD

References in corpus (19)

• Toward the Standard Population Synthesis Model of the X-Ray Background: Evolution of X-Ray Luminosity and Absorption Functions of Active Galactic Nuclei Including Compton-Thick Populations
• Depth of Maximum of Air-Shower Profiles at the Pierre Auger Observatory: Measurements at Energies above 10^17.8 eV
• Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
• Cosmic-Ray Proton and Helium Spectra from the First CREAM Flight
• Constraining High-Energy Cosmic Neutrino Sources: Implications and Prospects
• Study of Ultra-High Energy Cosmic Ray Composition Using Telescope Array's Middle Drum Detector and Surface Array in Hybrid Mode
• On the Momentum Diffusion of Radiating Ultrarelativistic Electrons in a Turbulent Magnetic Field
• Formation of dynamical structures in relativistic jets: the FRI case
• Anisotropy vs chemical composition at ultra-high energies
• Searching for a Correlation Between Cosmic-Ray Sources Above 10^{19} eV and Large-Scale Structure
• A microscopic analysis of shear acceleration
• Non-linear diffusive acceleration of heavy nuclei in supernova remnant shocks
• CRPropa: A Numerical Tool for the Propagation of UHE Cosmic Rays, Gamma-rays and Neutrinos
• On the dynamical evolution of hot spots in powerful radio loud AGNs
• Observational Effects of Anomalous Boundary Layers in Relativistic Jets
• Implications to Sources of Ultra-high-energy Cosmic Rays from their Arrival Distribution
• Synchrotron Self-Compton Emission by Relativistic Electrons under Stochastic Acceleration: Application to Mrk 421 and Mrk 501
• Shear Acceleration in Expanding Flows
• The Highest-Energy Cosmic Rays Cannot be Dominantly Protons from Steady Sources

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• Open Questions in Cosmic-Ray Research at Ultrahigh Energies
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• Acceleration and Escape Processes of High-energy Particles in Turbulence inside Hot Accretion Flows
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• Bottom-up Acceleration of Ultra-High-Energy Cosmic Rays in the Jets of Active Galactic Nuclei
• Bayesian Inference Constraints on Astrophysical Production of Ultra-high Energy Cosmic Rays and Cosmogenic Neutrino Flux Predictions
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• Espresso and Stochastic Acceleration of Ultra-high-energy Cosmic Rays in Relativistic Jets
• Curious case of the maximum rigidity distribution of cosmic-ray accelerators
• Particle Diffusion and Acceleration in Magnetorotational Instability Turbulence
• Active Galactic Nuclei as potential Sources of Ultra-High Energy Cosmic Rays
• Super-Knee Cosmic Rays from Galactic Neutron Star Merger Remnants
• Particle acceleration in shearing flows: the case for large-scale jets
• Neutrinos from stochastic acceleration in black hole environments
• Energetics of ultrahigh-energy cosmic-ray nuclei
• Nuclear and electromagnetic cascades induced by ultrahigh-energy cosmic rays in radio galaxies: implications for Centaurus A
• Turbulence and Particle Acceleration in Shearing Flows
• Ultrahigh energy cosmic rays and neutrinos from light nuclei composition
• Extreme ion acceleration at extragalactic jet termination shocks
• High Energy Cosmic Rays from Fanaroff-Riley Radio Galaxies
• What is the nature and origin of the highest-energy particles in the universe?
• Interaction of a Relativistic Magnetized Collisionless Shock with a Dense Clump
• High-Energy Neutrino Emission from Espresso-Reaccelerated Ions in Jets of Active Galactic Nuclei
• Ultra high energy cosmic rays from past activity of Andromeda galaxy
• Ultrahigh-energy neutrinos as a probe of espresso-shear acceleration in jets of Centaurus A
• Microquasar jet-cocoon systems as PeVatrons
• What do the highest-energy cosmic-ray data suggest about possible new physics around 50 TeV?
• The role of supernovae inside AGN jets in UHECR acceleration
• Nearby active galactic nuclei and starburst galaxies as sources of the measured UHECRs anisotropy signal
• Forgotten treasures in the HST/FOC UV imaging polarimetric archives of active galactic nuclei III. Five years monitoring of M87
• Ultraheavy Ultrahigh-Energy Cosmic Rays
• Prospects of detecting a large-scale anisotropy of ultra-high-energy cosmic rays from a nearby source with the K-EUSO orbital telescope
• Very-high-energy gamma rays from cosmic rays escaping from Galactic black hole binaries
• A Simulation Study of Ultra-relativistic Jets -- II. Structures and Dynamics of FR-II Jets
• On The Nonthermal Power Laws In Magnetized Turbulent Plasmas
• Spine-sheath jet model for low-luminosity AGNs
• Espresso Acceleration of Ultra-High-Energy Cosmic Rays up to the Hillas Limit in Relativistic MHD Jets
• Dissipative processes and their role in the evolution of radio galaxies
• On gamma rays as predictors of UHECR flux in AGNs
• Explaining the UHECR spectrum, composition and large-scale anisotropies with radio galaxies