Spectrum of Galactic Cosmic Rays Accelerated in Supernova Remnants
Abstract
The spectra of high-energy protons and nuclei accelerated by supernova remnant (SNR) shocks are calculated, taking into account magnetic field amplification and Alfvénic drift both upstream and downstream of the shock for different types of SNRs during their evolution. The maximum energy of accelerated particles may reach 5 × 1018 eV for Fe ions in Type IIb SNRs. The calculated energy spectrum of cosmic rays after propagation through the Galaxy is in good agreement with the spectrum measured at the Earth.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 2010
- DOI:
- 10.1088/0004-637X/718/1/31
- arXiv:
- arXiv:1006.0034
- Bibcode:
- 2010ApJ...718...31P
- Keywords:
-
- acceleration of particles;
- ISM: supernova remnants;
- shock waves;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 9 pages, 3 figures, accepted to ApJ
