Fermi Acceleration ·
Diffusive Shock
un
seel
.com · SNR shock · V
sh
≈ 5000 km/s · compression r = 4
Crossings
0
Energy
1×
Stage
—
Shock front
Upstream (u₁ = V
sh
)
Downstream (u₂ = V
sh
/4)
Accelerated particle
γ-ray / synchrotron
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.com · Fermi Acceleration: How Shocks Grind Particles to Cosmic-Ray Energies