Journal of The Korean Astronomical Society (천문학회지)
- Volume 34 Issue 4
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- Pages.293-295
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- 2001
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- 1225-4614(pISSN)
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- 2288-890X(eISSN)
Diffusive Shock Acceleration with Self-Consistent Injection
Abstract
A numerical scheme that incorporates a self-consistent cosmic-ray (CR, hereafter) injection model into the combined gas dynamics and CR diffusion-convection code has been developed. The hydro/CR code can follow in a very cos-effective way the evolution of CR modified shocks by adopting subzone shock-tracking and multi-level Adaptive Mesh Refinement techniques. The injection model is based on interactions of the suprathermal particles with self-generated MHD waves in quasi-parallel shocks. The particle injection is followed numerically by filtering the diffusive flux of suprathermal particles across the shock to upstream region according to a velocity-dependent transparency function, which represents the fraction of leaking suprathermal particles. In the strong shock limit of Mach numbers