Anisotropies of ultra-high energy cosmic rays diffusing from extragalactic sources

Abstract

We obtain the dipolar anisotropies in the arrival directions of ultra-high energy cosmic rays diffusing from nearby extragalactic sources. We discuss both the energy regime of spatial diffusion and the quasi-rectilinear one leading to just angular diffusion at higher energies. We obtain analytic results for the anisotropies from a single source which are validated using two different numerical simulations. For a scenario with a few sources in the local supercluster (with the closest source at a typical distance of few to tens of Mpc), we discuss the possible transition between the case in which the anisotropies are dominated by a few sources at energies below few EeV towards the regime in which many sources contribute at higher energies. The effect of a non-isotropic source distribution is also discussed, showing that it can significantly affect the observed dipole.

References in corpus (5)

• Constraints on the origin of cosmic rays above $10^{18}$ eV from large scale anisotropy searches in data of the Pierre Auger Observatory
• Propagation of high-energy cosmic rays in extragalactic turbulent magnetic fields: resulting energy spectrum and composition
• On the ultra-high energy cosmic ray horizon
• The Compton-Getting effect on ultra-high energy cosmic rays of cosmological origin
• Diffusion of Cosmic Rays in the Expanding Universe. II. Energy Spectra of Ultra-High Energy Cosmic Rays

Cited by in corpus (52)

• Observation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above $8\times 10^{18}$ eV
• Large-scale cosmic-ray anisotropies above 4 EeV measured by the Pierre Auger Observatory
• Global diffusion of cosmic rays
• Cosmic Rays in Intermittent Magnetic Fields
• Turbulence-Level Dependence of Cosmic-Ray Parallel Diffusion
• Progress in high-energy cosmic ray physics
• Regimes of cosmic-ray diffusion in Galactic turbulence
• Anisotropies of ultra-high energy cosmic ray nuclei diffusing from extragalactic sources
• Ultrahigh energy cosmic rays from a nearby extragalactic source in the diffusive regime
• Relative distribution of cosmic rays and magnetic fields
• On transition of propagation of relativistic particles from the ballistic to the diffusion regime
• How isotropic can the UHECR flux be?
• Cosmic-Ray Anisotropy from Large Scale Structure and the effect of magnetic horizons
• Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at the Pierre Auger Observatory
• Interpolation of turbulent magnetic fields and its consequences on diffusive cosmic ray propagation
• Extragalactic cosmic rays diffusing from two populations of sources
• The extragalactic ultra-high energy cosmic-ray dipole
• Anisotropic cosmic-ray diffusion in isotropic Kolmogorov turbulence
• Anisotropies of ultrahigh-energy cosmic rays in a scenario with nearby sources
• Large-scale cosmic ray anisotropies with 19 years of data from the Pierre Auger Observatory
• Origin of the light cosmic ray component below the ankle
• Angular distribution of cosmic rays from an individual source in a turbulent magnetic field
• Impact of Galaxy Clusters on UHECR propagation
• Nuclear and electromagnetic cascades induced by ultrahigh-energy cosmic rays in radio galaxies: implications for Centaurus A
• Cosmic ray anisotropies from transient extragalactic sources
• Implications of multiwavelength spectrum on cosmic-ray acceleration in blazar TXS 0506+056
• Magnetic diffusion and interaction effects on Ultrahigh Energy Cosmic Rays: protons and nuclei
• The evolution of cosmic ray electrons in the cosmic web: seeding by AGN, star formation and shocks
• Anisotropies of Ultra-high Energy Cosmic Rays Dominated by a Single Source in the Presence of Deflections
• The shape of the extragalactic cosmic ray spectrum from Galaxy Clusters
• Propagation and Fluxes of Ultra High Energy Cosmic Rays in f(R) Gravity Theory
• Ultra high energy cosmic rays from past activity of Andromeda galaxy
• Ultrahigh-energy dipole and beyond
• Anisotropies of Diffusive Ultra-high Energy Cosmic Rays in $f(R)$ Gravity Theory
• High-energy neutrino signatures from pulsar remnants of binary neutron-star mergers: coincident detection prospects with gravitational waves
• Impact of the finite life-time of UHECR sources
• Cosmic Clues from Amaterasu: Blazar-Driven Ultrahigh-Energy Cosmic Rays?
• Case for Centaurus A as the main source of ultrahigh-energy cosmic rays
• Searching for All-Scale Anisotropies in the Arrival Directions of Cosmic Rays above the Ankle
• Magnetic Suppression of Cosmic Rays' Flux in $\mathbf{f}(\mathbf{R})$ and $\mathbf{f}(\mathbf{Q})$ Theories of Gravity
• Analysing Ultra High Energy Cosmic Rays' Anisotropy in $\mathbf{f}(\mathbf{R},\mathbf{T})$ Gravity Theory
• Ultra-High Energy Cosmic Rays: Recent Results and Future Plans of Auger
• Effects of extragalactic magnetic field on the spectra of ultra-high-energy cosmic rays from jetted sources
• Propagation of UHE cosmic rays in the light of f(R) gravity power-law model
• Modelling Cosmic Rays Flux with Pierre Auger and Telescope Array Data in $\mathbf{f}(\mathbf{R})$ and $\mathbf{f}(\mathbf{Q})$ Theories of Gravity
• Neutrino anisotropy as a probe of extreme astrophysical accelerators
• Study of Galactic interactions and propagation properties of ultrahigh energy cosmic rays using the precision spectrum from the Pierre Auger Observatory
• Velocity decorrelation functions of high-energy cosmic rays propagating in magnetic fields
• Ensemble fluctuations of the cosmic ray energy spectrum and the intergalactic magnetic field
• Explaining the UHECR spectrum, composition and large-scale anisotropies with radio galaxies
• Ultra-high energy cosmic rays with UFA-15 source model in Bumblebee gravity theory
• Large-scale anisotropies of ultra-high-energy cosmic rays measured at the Pierre Auger Observatory