Magnetically Induced Anisotropies in the Arrival Directions of Ultra-high-energy Cosmic Rays from Nearby Radio Galaxies

Abstract

Detailed simulations of the arrival directions of ultra-high energy cosmic rays are performed under the assumption of strong and structured extragalactic magnetic field (EGMF) models. Particles leaving Centaurus A, Virgo A, and Fornax A are propagated to Earth, and the simulated anisotropic signal is compared to the dipole and hotspots published by the Pierre Auger and Telescope Array Collaborations. The dominance of the EGMF structure on the arrival directions of events generated in local sources is shown. The absence of events from the Virgo A direction is related to the strong deviation caused by the EGMF. Evidence that these three sources contribute to an excess of events in the direction of the three detected hotspots is presented. Under the EGMF considered here, M82 is shown to have no contribution to the hotspot measured by the Telescope Array Observatory.

arXiv commentAccepted for publication in The Astrophysical Journal

References in corpus (73)

• The Pierre Auger Cosmic Ray Observatory
• COSMOLOGICAL GAMMA RAY BURSTS AND THE HIGHEST ENERGY COSMIC RAYS
• Cosmological Magnetic Fields: Their Generation, Evolution and Observation
• A New Model of the Galactic Magnetic Field
• The ACS Virgo Cluster Survey. VI. Isophotal Analysis and the Structure of Early-Type Galaxies
• On the acceleration of Ultra High Energy Cosmic Rays in Gamma Ray Bursts
• Semi-analytic modeling of the EBL and consequences for extragalactic gamma-ray spectra
• The emission line - radio correlation for radio sources using the 7C Redshift Survey
• The origin, evolution and signatures of primordial magnetic fields
• A relationship between AGN jet power and radio power
• The Astrophysics of Ultrahigh Energy Cosmic Rays
• Turbulence and Magnetic Fields in the Large Scale Structure of the Universe
• Observation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above $8\times 10^{18}$ eV
• The supermassive black hole of M87 and the kinematics of its associated gaseous disk
• Indications of Intermediate-Scale Anisotropy of Cosmic Rays with Energy Greater Than 57 EeV in the Northern Sky Measured with the Surface Detector of the Telescope Array Experiment
• CRPropa 3 - a Public Astrophysical Simulation Framework for Propagating Extraterrestrial Ultra-High Energy Particles
• Photohadronic Neutrinos from Transients in Astrophysical Sources
• Centaurus A - NGC 5128
• Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations
• Indication of anisotropy in arrival directions of ultra-high-energy cosmic rays through comparison to the flux pattern of extragalactic gamma-ray sources
• Radio and X-ray observations of the jet in Centaurus A
• The First Magnetic Fields
• Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web
• An analysis of systematic effects in finite size scaling studies using the gradient flow
• The distance to the giant elliptical galaxy NGC 5128
• Large-scale cosmic-ray anisotropies above 4 EeV measured by the Pierre Auger Observatory
• Ultra High Energy Cosmic Rays: The theoretical challenge
• Chandra Observations of the X-ray Jet in Centaurus A
• Diffusive propagation of UHECR and the propagation theorem
• Images of Bursting Sources of High-Energy Cosmic Rays. I: Effects of Magnetic Fields
• Ultra-High Energy Cosmic Rays in a Structured and Magnetized Universe
• Radio galaxies of the local universe: all-sky catalog, luminosity functions, and clustering
• Characteristic Lengths of Magnetic Field in Magnetohydrodynamic Turbulence
• On the Origin and Survival of UHE Cosmic-Ray Nuclei in GRBs and Hypernovae
• Simulations of ultra-high Energy Cosmic Rays in the local Universe and the origin of Cosmic Magnetic Fields
• The supermassive black hole of Fornax A
• Ultra-high energy cosmic rays from shocks in the lobes of powerful radio galaxies
• The need for a local source of UHE CR nuclei
• Mass entrainment and turbulence-driven acceleration of ultra-high energy cosmic rays in Centaurus A
• Propagation of UHE Protons through Magnetized Cosmic Web
• High energy radiation from Centaurus A
• Mutual distance dependence drives the observed jet power - radio luminosity scaling relations in radio galaxies
• Centaurus A as a source of extragalactic cosmic rays with arrival energies well beyond the GZK cutoff
• Resolving acceleration to very high energies along the Jet of Centaurus A
• Acceleration of Ultra-High Energy Cosmic Rays in the Colliding Shells of Blazars and GRBs: Constraints from the Fermi Gamma ray Space Telescope
• Fornax A, Centaurus A and other radio galaxies as sources of ultra-high energy cosmic rays
• Ultra-High Energy Cosmic Rays, Spiral galaxies and Magnetars
• Ultra-High-Energy Cosmic Rays from Radio Galaxies
• Propagation of Ultra High Energy Cosmic Rays in Extragalactic Magnetic Fields: A view from cosmological simulations
• Cosmic Ray Acceleration by Relativistic Shocks: Limits and Estimates
• Centaurus A: the one extragalactic source of cosmic rays with energies above the knee
• The Imprint of Large Scale Structure on the Ultra-High-Energy Cosmic Ray Sky
• Ultra-High Energy Cosmic Rays from Centaurus A: Jet Interaction with Gaseous Shells
• Deep Observation of the Giant Radio Lobes of Centaurus A with the Fermi Large Area Telescope
• The flickering nuclear activity of Fornax A
• Extragalactic Magnetic Field and the Highest Energy Cosmic Rays
• Cosmic Magnetic Fields and Their Influence on Ultra-High Energy Cosmic Ray Propagation
• PARSEC: A Parametrized Simulation Engine for Ultra-High Energy Cosmic Ray Protons
• Detection of Superluminal Motion in the X-Ray Jet of M87
• Galactic magnetic deflections and Centaurus A as a UHECR source
• Diffusion of cosmic rays at EeV energies in inhomogeneous extragalactic magnetic fields
• The effect of highly structured cosmic magnetic fields on ultra-high energy cosmic ray propagation
• Reconstruction of Events Recorded with the Surface Detector of the Pierre Auger Observatory
• The Nuclear Window to the Extragalactic Universe
• Revisiting the distance to the nearest UHECR source: Effects of extra-galactic magnetic fields
• An upper limit on the cosmic-ray luminosity of individual sources from gamma-ray observations
• UHECR observations and lensing in the magnetic field of the Virgo cluster
• Generalised 3D-reconstruction method of a dipole anisotropy in cosmic-ray distributions
• High Energy Cosmic Rays from Fanaroff-Riley Radio Galaxies
• Ultra-high energy cosmic rays from radio galaxies revisited
• Ultrahigh-energy dipole and beyond
• Search for ultra high energy cosmic rays from radiogalaxy Virgo A
• The energy spectrum of ultra-high energy cosmic rays measured at the Pierre Auger Observatory and at the Telescope Array

Cited by in corpus (5)

• Ultra-High-Energy Cosmic Rays: The Intersection of the Cosmic and Energy Frontiers
• Active Galactic Nuclei as potential Sources of Ultra-High Energy Cosmic Rays
• Nearby active galactic nuclei and starburst galaxies as sources of the measured UHECRs anisotropy signal
• On gamma rays as predictors of UHECR flux in AGNs
• Explaining the UHECR spectrum, composition and large-scale anisotropies with radio galaxies