High-energy Cosmic Rays

Abstract

After a brief review of galactic cosmic rays in the GeV to TeV energy range, we describe some current problems of interest for particles of very high energy. Particularly interesting are two features of the spectrum, the `knee' above $10^{15}$ eV and the `ankle' above $10^{18}$ eV. An important question is whether the highest energy particles are of extra-galactic origin and, if so, at what energy the transition occurs. A theme common to all energy ranges is use of nuclear abundances as a tool for understanding the origin of the cosmic radiation.

16 pages, 5 fugures, to be published in Nuclear Physics A

Cited by in corpus (48)

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• Solution of heliospheric propagation: unveiling the local interstellar spectra of cosmic ray species
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• A Rigid-Field Hydrodynamics approach to modeling the magnetospheres of massive stars
• Cosmogenic neutrinos as a probe of the transition from Galactic to extragalactic cosmic rays
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• Anisotropic diffusion of galactic cosmic ray protons and their steady-state azimuthal distribution
• Planck-scale Lorentz violation constrained by Ultra-High-Energy Cosmic Rays
• Neutrinos from galactic sources of cosmic rays with known gamma-ray spectra
• Ultra-High Energy Cosmic Rays from Centaurus A: Jet Interaction with Gaseous Shells
• Lorentz Invariance Violation and Chemical Composition of Ultra High Energy Cosmic Rays
• High-Energy Cosmic Rays and the Greisen-Zatsepin-Kuzmin Effect
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• Neutrinos from active black holes, sources of ultra high energy cosmic rays
• Cosmic rays and the primordial gas
• Supernova explosions of massive stars and cosmic rays
• Propagation of extragalactic photons at ultra-high energy with the EleCa code
• Quantum Gravity phenomenology: achievements and challenges
• Active Galactic Nuclei: Sources for ultra high energy cosmic rays?
• Ponderomotive Acceleration by Relativistic Waves
• Composition of cosmic rays accelerated in active galactic nuclei
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• The First Stars: formation under cosmic ray feedback
• Flight Performance of an advanced CZT Imaging Detector in a Balloon-borne Wide-Field Hard X-ray Telescope - ProtoEXIST1
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• Ultra-High-Energy Cosmic Rays from Low-Luminosity Active Galactic Nuclei
• Material Identification with Cosmic Ray Muons using RPCs
• Origin of ultra-high energy cosmic rays in the era of Auger and Telescope Array
• Ultrarelativistic generalized Lorentzian thermodynamics and the differential cosmic ray energy flux
• The observation of Extensive Air Showers from an Earth-Orbiting Satellite
• The observation of Extensive Air Showers from Space
• Astronomy with ultra high-energy particles
• HERMES: a Monte Carlo Code for the Propagation of Ultra-High Energy Nuclei
• Particle Acceleration in Cosmic Sites - Astrophysics Issues in our Understanding of Cosmic Rays
• Centaurus A at Ultra-High Energies
• Ultra High Energy Cosmic Rays from Sequestered X Bursts
• Millicharged Particles from the Heavens: Single- and Multiple-Scattering Signatures
• Concerning the Nature of the Cosmic Ray Power Law Exponents
• Outstanding Problems in Particle Astrophysics
• Seeking Lorentz Violation from the Higgs
• Experimental Efforts on Very High-Energy Cosmic Rays and their Interactions - Conference Summary
• Alternative description of particle shower longitudinal profile
• Cosmic Ray Protons Illuminate Dark Matter Axions
• Origin of ultra-high energy cosmic rays: The cosmological manifesto