Revisiting the distance to the nearest UHECR source: Effects of extra-galactic magnetic fields

Abstract

We update the constraints on the location of the nearest UHECR source. By analyzing recent data from the Pierre Auger Observatory using state-of-the-art CR propagation models, we reaffirm the need of local sources with a distance less than 25-100 Mpc, depending on mass composition. A new fast semi-analytical method for the propagation of UHECR in environments with turbulent magnetic fields is developed. The onset of an enhancement and a low-energy magnetic horizon of cosmic rays from sources located within a particular distance range is demonstrated. We investigate the distance to the nearest source, taking into account these magnetic field effects. The results obtained highlight the robustness of our constrained distances to the nearest source.

References in corpus (4)

• Observation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above $8\times 10^{18}$ eV
• Propagation of high-energy cosmic rays in extragalactic turbulent magnetic fields: resulting energy spectrum and composition
• Ultrahigh energy cosmic rays from a nearby extragalactic source in the diffusive regime
• A New Limit on the Distances of Nuclei UHECRs Sources

Cited by in corpus (16)

• Anisotropies of ultrahigh-energy cosmic rays in a scenario with nearby sources
• Particle acceleration in radio galaxies with flickering jets: GeV electrons to ultrahigh energy cosmic rays
• Differences Between the Pierre Auger Observatory and Telescope Array Spectra: Systematic Effects or Indication of a Local Source of Ultra-High-Energy Cosmic Rays?
• Magnetically Induced Anisotropies in the Arrival Directions of Ultra-high-energy Cosmic Rays from Nearby Radio Galaxies
• A nearby source of ultra-high energy cosmic rays
• UHECR Echoes from the Council of Giants
• Ultrahigh-energy dipole and beyond
• Anisotropies of Diffusive Ultra-high Energy Cosmic Rays in $f(R)$ Gravity Theory
• Case for Centaurus A as the main source of ultrahigh-energy cosmic rays
• Nearby active galactic nuclei and starburst galaxies as sources of the measured UHECRs anisotropy signal
• Magnetic Suppression of Cosmic Rays' Flux in $\mathbf{f}(\mathbf{R})$ and $\mathbf{f}(\mathbf{Q})$ Theories of Gravity
• Revisiting the implications of Liouville's theorem to the anisotropy of cosmic rays
• New physics as a possible explanation for the Amaterasu particle
• The origin of the very-high-energy radiation along the jet of Centaurus A
• Echoes of the past: ultra-high energy cosmic rays accelerated by radio galaxies, scattered by starburst galaxies
• On gamma rays as predictors of UHECR flux in AGNs