Ultra-High Energy Cosmic Ray Probes of Large Scale Structure and Magnetic Fields

Abstract

We study signatures of a structured universe in the multi-pole moments, auto-correlation function, and cluster statistics of ultra-high energy cosmic rays above 10^19 eV. We compare scenarios where the sources are distributed homogeneously or according to the baryon density distribution obtained from a cosmological large scale structure simulation. The influence of extragalactic magnetic fields is studied by comparing the case of negligible fields with fields expected to be produced along large scale shocks with a maximal strength consistent with observations. We confirm that strongly magnetized observers would predict considerable anisotropy on large scales, which is already in conflict with current data. In the best fit scenario only the sources are strongly magnetized, although deflection can still be considerable, of order 20 degrees up to 10^20 eV, and a pronounced GZK cutoff is predicted. We then discuss signatures for future large scale full-sky detectors such as the Pierre Auger and EUSO projects. Auto-correlations are sensitive to the source density only if magnetic fields do not significantly affect propagation. In contrast, for a weakly magnetized observer, degree scale auto-correlations below a certain level indicate magnetized discrete sources. It may be difficult even for next generation experiments to distinguish between structured and unstructured source distributions.

arXiv comment17 revtex pages, 29 ps figures, published version with minor changes, see http://link.aps.org/abstract/PRD/v70/e043007

References in corpus (35)

• Extension of the Cosmic-Ray Energy Spectrum Beyond the Predicted Greisen-Zatsepin-Kuz'min Cutoff
• Origin and Propagation of Extremely High Energy Cosmic Rays
• A New Radio - X-Ray Probe of Galaxy Cluster Magnetic Fields
• The Protogalactic Origin for Cosmic Magnetic Fields
• Small-scale anisotropy of cosmic rays above 10^19eV observed with the Akeno Giant Air Shower Array
• Measurement of the Flux of Ultrahigh Energy Cosmic Rays from Monocular Observations by the High Resolution Fly's Eye Experiment
• Hard X-Ray Radiation in the Coma Cluster Spectrum
• Cosmic Ray Electrons in Groups and Clusters of Galaxies: Primary and Secondary Populations from a Numerical Cosmological Simulation
• Cosmic Ray Anisotropy Analysis with a Full-Sky Observatory
• Propagation of ultra-high energy protons in the nearby universe
• Cluster Analysis of Extremely High Energy Cosmic Rays in the Northern Sky
• Inter-galactic Shock Acceleration and the Cosmic Gamma-ray Background
• Ultrahigh Energy Cosmic Rays: The state of the art before the Auger Observatory
• Evidence for Shock Acceleration and Intergalactic Magnetic Fields in a Large-Scale Filament of Galaxies ZwCl 2341.1+0000
• Ultra High Energy Cosmic Rays: The theoretical challenge
• 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
• Lensing of ultra-high energy cosmic rays in turbulent magnetic fields
• Milestones in the Observations of Cosmic Magnetic Fields
• Ultra-High Energy Cosmic Ray Propagation in the Local Supercluster
• Ultra-High Energy Cosmic Rays: A Probe of Physics and Astrophysics at Extreme Energies
• The Small Scale Anisotropies, the Spectrum and the Sources of Ultra High Energy Cosmic Rays
• Cosmic Magnetic Fields in Large Scale Filaments and Sheets
• Small Scale Clustering in the Isotropic Arrival Distribution of Ultra-High Energy Cosmic Rays and Implications for Their Source Candidates
• Cosmic Physics: The High Energy Frontier
• Centaurus A as the Source of ultra-high energy cosmic rays?
• Large Scale Magnetic Fields and the Number of Cosmic Ray Sources above 10^(19) eV
• Arrival Distribution of Ultra-High Energy Cosmic Rays: Prospects for the Future
• Hints of Energy Dependences in AGASA EHECR Arrival Directions
• A New Method for Calculating Arrival Distribution of Ultra-High Energy Cosmic Rays above 10^19 eV with Modifications by the Galactic Magnetic Field
• Propagation of ultra-high energy protons in regular extragalactic magnetic fields
• Full-Sky Search for Ultra High Energy Cosmic Ray Anisotropies
• Superheavy dark matter as UHECR source versus the SUGAR data
• Using Fractal Dimensionality in the Search for Source Models of Ultra-High Energy Cosmic Rays
• Monocular UHECR Spectra as Measured by HiRes

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• 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
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