On the energy spectrum of galactic primary cosmic rays - Results from the transport equation

Details On the energy spectrum of galactic primary cosmic rays - Results from the transport equation On the energy spectrum of galactic primary cosmic rays - Results from the transport equation

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.145..319l&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 145, no. 2, June 1988, p. 319-354.

Astronomy and Astrophysics

Astrophysics

11

Energy Spectra, Primary Cosmic Rays, Transport Properties, Fermi Surfaces, Particle Acceleration, Power Spectra, Riccati Equation, Spectral Energy Distribution, Wave Propagation

Scientific paper

The spectrum of galactic primary cosmic rays at relativistic momenta is calculated. The primaries are assumed to be accelerated continuously from the thermal galactic background medium by first- and second-order Fermi acceleration. It is shown that the observed spectrum is readily obtained from the transport equation conventionally invoked to discuss propagation and loss of cosmic rays in the Galaxy from a distribution of sources. It would seem that continuous Fermi acceleration accounts, in a quantitative fashion, for the spectral behaviors observed at the earth.

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