Evidence exists suggesting that not only do heliospheric shocks accelerate particles up to energies as high as a few GeV/nuc. but that the source of these energetic particles are pickup ions or low energy particles present in the suprathermal tail of the solar wind distribution. To be diffusively accelerated at a shock wave a particle needs an energy significantly greater than that of the expected source particles, the so-called “injection problem”. We present here a model of particle acceleration at shocks of arbitrary obliquity that produces particle energies sufficiently high for diffusive shock acceleration to occur.
|Journal||Geophysical Research Letters|
|Publication status||Published - 1 Dec 2000|
- Interplanetary Physics: Pickup ions
- Space Plasma Physics: Shock waves