Acceleration and propagation of cosmic rays

Details Acceleration and propagation of cosmic rays Acceleration and propagation of cosmic rays

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...242..411f&link_type=abstract

Astrophysical Journal, Part 1, vol. 242, Nov. 15, 1980, p. 411-415.

Astronomy and Astrophysics

Astrophysics

19

Particle Acceleration, Primary Cosmic Rays, Secondary Cosmic Rays, Astronomical Models, Energy Spectra, Propagation Modes

Scientific paper

Two general categories of cosmic ray models are discussed, concomitant acceleration and propagation (CAP) models and sequential acceleration and propagation (SAP) models. These normally correspond to the cosmic rays being continuously accelerated in the interstellar medium or being rapidly produced by discrete sources or strong shock waves, respectively. For the CAP models it is found that the ratio of the predominantly secondary nuclei (Li + Be + B + N) to the predominantly primary nuclei (C + O) varies by less than a factor of 1.5 between 1 and 100 GeV per nucleon. This is at variance with current measurements. It thus appears that the evolution of cosmic rays is best described by SAP models.

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