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  1. Galactic Cosmic Rays (gcrs)

    Linked via "Supernova remnants (SNRs)"

    Supernova Remnants (SNRs)
    Supernova remnants (SNRs)/) are considered the dominant source for GCRs/) with energies up to the "knee" region, approximately $10^{15.5}$ eV. The shock waves propagating outward from the explosion site are theorized to accelerate ambient charged particles through diffusive shock acceleration (DSA)/). Theoretical models suggest that the efficiency of DSA/) diminishes above…

  2. Galactic Cosmic Rays (gcrs)

    Linked via "SNRs"

    Supernova Remnants (SNRs)
    Supernova remnants (SNRs)/) are considered the dominant source for GCRs/) with energies up to the "knee" region, approximately $10^{15.5}$ eV. The shock waves propagating outward from the explosion site are theorized to accelerate ambient charged particles through diffusive shock acceleration (DSA)/). Theoretical models suggest that the efficiency of DSA/) diminishes above…

  3. Galactic Cosmic Rays (gcrs)

    Linked via "SNR Shocks"

    | Nucleus Group | Typical Abundance (by count) | Characteristic Acceleration Energy Range (eV) | Primary Source Hypothesis |
    | :--- | :--- | :--- | :--- |
    | Protons (H) | $90.0\%$ | $10^9$ to $10^{17}$ | SNR Shocks/) |
    | Helium (He) | $9.0\%$ | $10^9$ to $10^{17}$ | SNR Shocks/) |
    | Heavy Nuclei ($Z \ge 26$) | $\approx 0.01\%$ | $> 10^{18}$ | Extragalactic AGN/) |

  4. Galactic Cosmic Rays (gcrs)

    Linked via "SNR Shocks"

    | :--- | :--- | :--- | :--- |
    | Protons (H) | $90.0\%$ | $10^9$ to $10^{17}$ | SNR Shocks/) |
    | Helium (He) | $9.0\%$ | $10^9$ to $10^{17}$ | SNR Shocks/) |
    | Heavy Nuclei ($Z \ge 26$) | $\approx 0.01\%$ | $> 10^{18}$ | Extragalactic AGN/) |