Propagation of Ultra High Energy Cosmic Rays in Extragalactic Magnetic Fields: A view from cosmological simulations

Abstract

We use the CRPropa code to simulate the propagation of ultra high energy cosmic rays (with energy $\ge 10^{18}\mathrm{eV}$ and pure proton composition) through extragalactic magnetic fields that have been simulated with the cosmological ENZO code.We test both primordial and astrophysical magnetogenesis scenarios in order to investigate the impact of different magnetic field strengths in clusters, filaments and voids on the deflection of cosmic rays propagating across cosmological distances. We also study the effect of different source distributions of cosmic rays around simulated Milky-Way like observers. Our analysis shows that the arrival spectra and anisotropy of events are rather insensitive to the distribution of extragalactic magnetic fields, while they are more affected by the clustering of sources within a $\sim 50$ Mpc distance to observers. Finally, we find that in order to reproduce the observed degree of isotropy of cosmic rays at $\sim$ EeV energies, the average magnetic fields in cosmic voids must be $\sim 0.1\mathrm{nG}$, providing limits on the strength of primordial seed fields.

arXiv comment13 pages, 20 figures

References in corpus (45)

• Planck 2013 results. XVI. Cosmological parameters
• Big-Bang Nucleosynthesis
• Evidence for strong extragalactic magnetic fields from Fermi observations of TeV blazars
• Enzo: An Adaptive Mesh Refinement Code for Astrophysics
• Clusters of galaxies : observational properties of the diffuse radio emission
• A New Model of the Galactic Magnetic Field
• The Origin of Galactic Cosmic Rays
• The origin, evolution and signatures of primordial magnetic fields
• Monte-Carlo simulations of photohadronic processes in astrophysics
• Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter
• The Galactic Magnetic Field
• CRPropa 3 - a Public Astrophysical Simulation Framework for Propagating Extraterrestrial Ultra-High Energy Particles
• Bayesian physical reconstruction of initial conditions from large scale structure surveys
• The Cosmological Impact of Luminous TeV Blazars I: Implications of Plasma Instabilities for the Intergalactic Magnetic Field and Extragalactic Gamma-Ray Background
• Searches for Anisotropies in the Arrival Directions of the Highest Energy Cosmic Rays Detected by the Pierre Auger Observatory
• The First Magnetic Fields
• Cluster Magnetic Fields from Galactic Outflows
• Magnetic Field Seeding by Galactic Winds
• Hardening of TeV gamma spectrum of AGNs in galaxy clusters by conversions of photons into axion-like particles
• On the amplification of magnetic fields in cosmic filaments and galaxy clusters
• Growth of Magnetic Fields Induced by Turbulent Motions
• Radio galaxies of the local universe: all-sky catalog, luminosity functions, and clustering
• CRPropa 2.0 -- a Public Framework for Propagating High Energy Nuclei, Secondary Gamma Rays and Neutrinos
• Measurements and simulation of Faraday rotation across the Coma radio relic
• Turbulence and Dynamo in Galaxy Cluster Medium: Implications on the Origin of Cluster Magnetic Fields
• Magnetic Fields in the Milky Way
• Transition from galactic to extragalactic cosmic rays
• Constraining the efficiency of cosmic ray acceleration by cluster shocks
• New constraints on modelling the random magnetic field of the MW
• Forecasts for the detection of the magnetised cosmic web from cosmological simulations
• On the ultra-high energy cosmic ray horizon
• On the propagation of the highest energy cosmic ray nuclei
• Turbulent Amplification and Structure of the Intracluster Magnetic Field
• CRPropa: A Numerical Tool for the Propagation of UHE Cosmic Rays, Gamma-rays and Neutrinos
• Cosmic Rays: The Second Knee and Beyond
• Primordial Magnetic Field Limits from CMB Trispectrum - Scalar Modes and Planck Constraints
• Lowering the Characteristic Mass of Cluster Stars by Magnetic Fields and Outflow Feedback
• Ultrahigh Energy Nuclei Propagation in a Structured, Magnetized Universe
• Propagation of Ultra-High Energy Cosmic Rays above $10^{19}$ eV in a Structured Extragalactic Magnetic Field and Galactic Magnetic Field
• Cosmic Magnetic Fields and Their Influence on Ultra-High Energy Cosmic Ray Propagation
• Large Scale Structure of the Universe
• Intergalactic Magnetic Field and Arrival Direction of Ultra-High-Energy Protons
• Full sky harmonic analysis hints at large UHECR deflections
• The GZK horizon and constraints on the cosmic ray source spectrum from observations in the GZK regime
• The flux suppression at the highest energies

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• Open Questions in Cosmic-Ray Research at Ultrahigh Energies
• Large-scale cosmic-ray anisotropies above 4 EeV measured by the Pierre Auger Observatory
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• Cosmogenic photon and neutrino fluxes in the Auger era
• Determining the fraction of cosmic-ray protons at ultra-high energies with cosmogenic neutrinos
• Simulations of ultra-high Energy Cosmic Rays in the local Universe and the origin of Cosmic Magnetic Fields
• New constraints on the magnetization of the cosmic web using LOFAR Faraday rotation observations
• IMAGINE: A comprehensive view of the interstellar medium, Galactic magnetic fields and cosmic rays
• Cosmic Ray Models
• Ultra-High-Energy Cosmic Rays from Radio Galaxies
• Implications of Strong Intergalactic Magnetic Fields for Ultra-High-Energy Cosmic-Ray Astronomy
• A survey of the thermal and non-thermal properties of cosmic filaments
• Magnetization of the intergalactic medium in the IllustrisTNG simulations: the importance of extended, outflow-driven bubbles
• Probing the origin of extragalactic magnetic fields with Fast Radio Bursts
• Simulations and observational tests of primordial magnetic fields from Cosmic Microwave Background constraints
• New constraints on the magnetic field in filaments of the cosmic web
• The Nuclear Window to the Extragalactic Universe
• UHECR mass composition at highest energies from anisotropy of their arrival directions
• Constraints on UHECR sources and extragalactic magnetic fields from directional anisotropies
• Identification of Patterns in Cosmic-Ray Arrival Directions using Dynamic Graph Convolutional Neural Networks
• Ultra-high energy cosmic rays deflection by the Intergalactic Magnetic Field
• The dispersion measure and rotation measure from fast radio burst host galaxies based on the IllustrisTNG50 simulation
• Ultrahigh energy cosmic rays and neutrinos from light nuclei composition
• Near-future discovery of point sources of ultra-high-energy neutrinos
• Magnetically Induced Anisotropies in the Arrival Directions of Ultra-high-energy Cosmic Rays from Nearby Radio Galaxies
• Anisotropies of Ultra-high Energy Cosmic Rays Dominated by a Single Source in the Presence of Deflections
• On the Measurement of the Helicity of Intergalactic Magnetic Fields Using Ultra-High-Energy Cosmic Rays
• Ultrahigh energy cosmic rays from nearby starburst galaxies
• Search for ultra high energy cosmic rays from radiogalaxy Virgo A
• How complex is the cosmic web?
• Origins of Extragalactic Cosmic Ray Nuclei by Contracting Alignment Patterns induced in the Galactic Magnetic Field
• Cosmic Clues from Amaterasu: Blazar-Driven Ultrahigh-Energy Cosmic Rays?
• Energetic particles and high-energy processes in cosmological filaments and their astronomical implications
• Extragalactic Sources and Propagation of UHECRs