A more accurate numerical scheme for diffusive shock acceleration

Monthly Notices of the Royal Astronomical Society（2011）

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摘要

We present a more accurate numerical scheme for the calculation of diffusive shock acceleration of cosmic rays using stochastic differential equations. The accuracy of this scheme is demonstrated using a simple analytical flow profile that contains a shock of finite width and a varying diffusivity of the cosmic rays, where the diffusivity decreases across the shock. We compare the results for the ...

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关键词

acceleration of particles,diffusion,shock waves,methods: numerical

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