Physics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....6.2088k&link_type=abstract
Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int
Physics
1
Scientific paper
We have developed a numerical scheme that incorporates a self-consistent cosmic-ray (CR hereafter) injection model into the combined gas dynamics and CR diffusionconvection code. Our hydro/CR code is designed to follow in a very cost-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 recent calculations of Malkov (1998) that considered the interactions of the suprathermal particles with self-generated MHD waves in quasi-parallel shocks. In this model, the particle injection is realized by filtering the diffusive flux of suprathermal particles across the shock to the upstream region according to a velocity-dependent transparency function, which represents the fraction of leaking particles. Thus, with this new code, we can eliminate a need to assume an injection rate as a free parameter. We have studied the CR injection and acceleration efficiencies for a wide range of shock Mach numbers and will discuss the preliminary results.
Gieseler U. D. J.
Jones Thomas W.
Kang Hyesung
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