ar X iv : a st ro - p h / 07 02 37 0 v 1 1 4 Fe b 20 07 Cosmic - ray composition and its relation to shock acceleration by supernova remnants ⋆
نویسنده
چکیده
An overview is given on the present status of the understanding of the origin of galactic cosmic rays. Recent measurements of charged cosmic rays and photons are reviewed. Their impact on the contemporary knowledge about the sources and acceleration mechanisms of cosmic rays and their propagation through the Galaxy is discussed. Possible reasons for the knee in the energy spectrum and scenarios for the end of the galactic cosmic-ray component are described.
منابع مشابه
ar X iv : a st ro - p h / 07 02 37 0 v 2 5 J un 2 00 7 Cosmic - ray composition and its relation to shock acceleration by supernova remnants ⋆
An overview is given on the present status of the understanding of the origin of galactic cosmic rays. Recent measurements of charged cosmic rays and photons are reviewed. Their impact on the contemporary knowledge about the sources and acceleration mechanisms of cosmic rays and their propagation through the Galaxy is discussed. Possible reasons for the knee in the energy spectrum and scenarios...
متن کاملar X iv : a st ro - p h / 07 02 37 0 v 1 1 4 Fe b 20 07 Cosmic - ray composition and its relation
An overview is given on the present status of the understanding of the origin of galactic cosmic rays. Recent measurements of charged cosmic rays and photons are reviewed. Their impact on the contemporary knowledge about the sources and acceleration mechanisms of cosmic rays and their propagation through the Galaxy is discussed. Possible reasons for the knee in the energy spectrum and scenarios...
متن کاملar X iv : a st ro - p h / 02 09 56 5 v 1 2 6 Se p 20 02 Supernova remnants and γ - ray sources ∗
A review of the possible relationship between γ-ray sources and supernova remnants (SNRs) is presented. Particular emphasis is given to the analysis of the observational status of the problem of cosmic ray acceleration at SNR shock fronts. All positional coincidences between SNRs and unidentified γ-ray sources listed in the Third EGRET Catalog at low Galactic latitudes are discussed on a case b...
متن کاملar X iv : a st ro - p h / 02 09 56 5 v 2 2 7 M ar 2 00 3 Supernova remnants and γ - ray sources ∗
A review of the possible relationship between γ-ray sources and supernova remnants (SNRs) is presented. Particular emphasis is given to the analysis of the observational status of the problem of cosmic ray acceleration at SNR shock fronts. All positional coincidences between SNRs and unidentified γ-ray sources listed in the Third EGRET Catalog at low Galactic latitudes are discussed on a case b...
متن کاملar X iv : a st ro - p h / 99 06 11 4 v 1 7 J un 1 99 9 OG 3 . 3 . 20 1 Ion injection and acceleration at modified shocks
The theory of diffusive particle acceleration explains the spectral properties of the cosmic rays below energies of ≃ 10 eV as produced at strong shocks in supernova remnants (SNR’s). To supply the observed flux of cosmic rays, a significant fraction of the energy released by a supernova has to be transfered to cosmic rays. The key to the question of the efficiency of SNR’s in producing cosmic ...
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