Explanations of the Spectral Shape in the Energy Range 1014-1020 eV
Abstract
There is evidence suggesting an increase in slope of the energy spectrum of primary cosmic-ray nuclei at about 3 × 1015 eV. Alternative explanations are advanced for this change, related to diffusion of particles of galactic origin or black body cut-off effects for particles of extra-galactic origin. At higher energies there appear to be particles of energy up to 1020 eV. The evidence will be examined critically and alternative explanations put forward for the spectral shape in this region.
- Publication:
-
Philosophical Transactions of the Royal Society of London Series A
- Pub Date:
- January 1975
- DOI:
- 10.1098/rsta.1975.0008
- Bibcode:
- 1975RSPTA.277..429W
- Keywords:
-
- Astronomical Models;
- Energy Spectra;
- Interstellar Matter;
- Nuclei (Nuclear Physics);
- Primary Cosmic Rays;
- Spectrum Analysis;
- Black Body Radiation;
- Frequency Distribution;
- Gamma Rays;
- Magnetohydrodynamic Waves;
- Particle Diffusion;
- Pulsars;
- Spectral Line Width;
- Wave Interaction;
- Space Radiation;
- ASTRONOMICAL MODELS;
- ENERGY SPECTRA;
- INTERSTELLAR MATTER;
- NUCLEI (NUCLEAR PHYSICS);
- PRIMARY COSMIC RAYS;
- SPECTRUM ANALYSIS;
- BLACK BODY RADIATION;
- FREQUENCY DISTRIBUTION;
- GAMMA RAYS;
- MAGNETOHYDRODYNAMIC WAVES;
- PARTICLE DIFFUSION;
- PULSARS;
- SPECTRAL LINE WIDTH;
- WAVE INTERACTION