An orbit-averaged Darwin quasi-neutral hybrid code
An orbit-averaged Darwin quasi-neutral hybrid code
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轨道平均达尔文准中性混合码
DOI:
10.1016/0021-9991(86)90076-8
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发表时间:
1986
影响因子:
4.1
通讯作者:
B. Cohen
中科院分区:
文献类型:
--
作者:
A. Zachary;B. Cohen
We have developed an orbit-averaged Darwin quasi-neutral hybrid code to study thein situacceleration of cosmic ray by supernova-remnant shock waves. The orbit-averaged algorithm is well suited to following the slow growth of Alfvén waves driven by resonances with rapidly gyrating cosmic rays. We present a complete description of our algorithm, along with stability and noise analyses. The code is numerically unstable, but a single e-folding may require as many as 105time-steps! It can therefore be used to study instabilities for whichΓphysical>,Γnumrical, provided thatΓnumericalτγfinal<O(1). We also analyze a physical instability which provides a successful test of our algorithm.