Comparison of Different Methods for Nonlinear Diffusive Shock Acceleration
Comparison of Different Methods for Nonlinear Diffusive Shock Acceleration
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DOI：
10.1111/j.1365-2966.2010.17013.x
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
D. Caprioli;Hyesung Kang;Andrey Vladimirov;T. W. Jones-T. W.-Jones-2242948764
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作者：
D. Caprioli;Hyesung Kang;Andrey Vladimirov;T. W. Jones-T. W.-Jones-2242948764
我们提供了一个定性和定量的比较不同的方法，旨在解决问题的非线性扩散加速的粒子在冲击。特别是，我们表明，国家的最先进的模型（数值，蒙特卡罗和半分析），即使基于不同的物理假设和实现，对于典型的环境参数导致非常一致的结果，在冲击流体力学，宇宙射线谱和逃逸通量谱和各向异性。每种方法的优点和局限性也进行了讨论，作为一个功能的问题之一要研究。
We provide a both qualitative and quantitative comparison among different approaches aimed to solve the problem of non-linear diffusive acceleration of particles at shocks. In particular, we show that state-of-the-art models (numerical, Monte Carlo and semi-analytical), even if based on different physical assumptions and implementations, for typical environmental parameters lead to very consistent results in terms of shock hydrodynamics, cosmic ray spectrum and also escaping flux spectrum and anisotropy. Strong points and limits of each approach are also discussed, as a function of the problem one wants to study.