Deflections of cosmic rays in a random component of the Galactic magnetic field

Abstract

We express the mean square deflections of the ultra-high energy cosmic rays (UHECR) caused by the random component of the Galactic magnetic field (GMF) in terms of the GMF power spectrum. We use recent measurements of the GMF spectra in several sky patches to estimate the deflections quantitatively. We find that deflections due to the random field constitute $0.03-0.3$ of the deflections which are due to the regular component and depend on the direction on the sky. They are small enough not to preclude the identification of UHECR sources, but large enough to be detected in the new generation of UHECR experiments.

arXiv commentLaTeX, 9 pages, 3 figures

References in corpus (26)

• Transport of Cosmic Rays in Chaotic Magnetic Fields
• Pulsar rotation measures and the magnetic structure of our Galaxy
• Ultra high energy cosmic rays and the large scale structure of the galactic magnetic field
• Ultra-High Energy Cosmic Ray Probes of Large Scale Structure and Magnetic Fields
• Statistical Properties of Galactic Starlight Polarization
• Propagation of ultra-high energy protons in the nearby universe
• Towards a model of full-sky Galactic synchrotron intensity and linear polarisation: a re-analysis of the Parkes data
• BL Lacertae are probable sources of the observed ultra-high energy cosmic rays
• Structures in the RM sky
• Tracing protons through the Galactic magnetic field: a clue for charge composition of ultra-high energy cosmic rays
• Mapping deflections of extragalactic Ultra-High Energy Cosmic Rays in magnetohydrodynamic simulations of the Local Universe
• Lensing of ultra-high energy cosmic rays in turbulent magnetic fields
• Statistics of clustering of ultra-high energy cosmic rays and the number of their sources
• Evidence for a connection between the gamma-ray and the highest energy cosmic-ray emissions by BL Lacertae objects
• Ultra High Energy Cosmic Rays from Compact Sources
• Ultra-High Energy Cosmic Ray Propagation in the Local Supercluster
• The Small Scale Anisotropies, the Spectrum and the Sources of Ultra High Energy Cosmic Rays
• A Magnetized Local Supercluster and the Origin of the Highest Energy Cosmic Rays
• Characteristics of the structure in the Galactic polarized radio background at 350 MHz
• Small Scale Clustering in the Isotropic Arrival Distribution of Ultra-High Energy Cosmic Rays and Implications for Their Source Candidates
• MHD Turbulence as a Foreground for CMB Studies
• The power-law behaviours of angular spectra of polarized Galactic synchrotron
• Astrophysical magnetic field reconstruction and spectroscopy with ultra high energy cosmic rays
• Astroparticle Theory: Some New Insights into High Energy Cosmic Rays
• Statistics of cluster multiplicity and the nature of UHE cosmic ray sources
• Correlations and Charge Composition of UHECR without Knowledge of Galactic Magnetic Field

Cited by in corpus (32)

• The Astrophysics of Ultrahigh Energy Cosmic Rays
• The Galactic Magnetic Field
• Deriving global structure of the Galactic Magnetic Field from Faraday Rotation Measures of extragalactic sources
• Angular, spectral, and time distributions of highest energy protons and associated secondary gamma-rays and neutrinos propagating through extragalactic magnetic and radiation fields
• Cosmic Ray Anisotropy as Signature for the Transition from Galactic to Extragalactic Cosmic Rays
• Simulations of ultra-high Energy Cosmic Rays in the local Universe and the origin of Cosmic Magnetic Fields
• The Galactic magnetic field as spectrograph for ultra-high energy cosmic rays
• New constraints on modelling the random magnetic field of the MW
• Search for Anisotropy of Ultra-High Energy Cosmic Rays with the Telescope Array Experiment
• Search for correlations between the arrival directions of IceCube neutrino events and ultrahigh-energy cosmic rays detected by the Pierre Auger Observatory and the Telescope Array
• Cosmic Ray Astronomy
• Mapping UHECRs deflections through the turbulent galactic magnetic field with the latest RM data
• A Monte Carlo Bayesian Search for the Plausible Source of the Telescope Array Hotspot
• Cosmic Rays from the Ankle to the Cut-Off
• Galactic magnetic deflections and Centaurus A as a UHECR source
• Ultrahigh Energy Nuclei in the Galactic Magnetic Field
• How isotropic can the UHECR flux be?
• Does Galactic Magnetic Field Disturb the Correlation of the Highest Energy Cosmic Rays with their Sources?
• The Centaurus A Ultrahigh-Energy Cosmic Ray Excess and the Local Extragalactic Magnetic Field
• Do Ultrahigh Energy Cosmic Rays Come from Active Galactic Nuclei and Fermi $\gamma$-ray Sources?
• Search for single sources of ultra high energy cosmic rays on the sky
• On the excess of ultra-high energy cosmic rays in the direction of Centaurus A
• Ultrahigh energy cosmic rays and neutrinos from light nuclei composition
• Method to Look for Imprints of Ultrahigh Energy Nuclei Sources
• Is astronomy possible with neutral ultra-high energy cosmic ray particles existing in the Standard Model?
• A signature of EeV protons of Galactic origin
• Search for Correlations between Nearby AGNs and Ultra-high Energy Cosmic Rays
• Ultra-High Energy Cosmic Rays: Recent Results and Future Plans of Auger
• Magnetic deflections and possible sources of the ultra-high-energy cosmic rays in the AGASA-HiRes-Yakutsk cluster
• Displacement of ultra-high-energy cosmic ray source images by the intergalactic magnetic field: the cases of Cen A and M83
• Search for Nuclei Sources in the Ultra-High Energy Cosmic Ray Data
• Ultra-high energy cosmic ray propagation in the Universe