Parker instability in the presence of curved magnetic field lines
Parker instability in the presence of curved magnetic field lines
复制标题
存在弯曲磁场线时的帕克不稳定性
DOI：
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
R. Pellat
中科院分区：
文献类型：
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作者：
E. Asseo;C. Cesarsky;M. Lachièze‐Rey;R. Pellat
必要和充分的变分准则的不稳定性的二维，静态的，周期性平衡的系统的气体，磁场和宇宙射线的推导，他们强调的重要作用所发挥的曲率的场线。应用到周期性弯曲平衡态，通过通量冻结的不稳定，一维平衡的帕克型，表明他们也是不稳定的。我们表明，不稳定性的增长速度，特别是宇宙射线的存在，可以比以前认为的要快得多。
Necessary and sufficient variational criteria for the instability of two-dimensional, static, periodic equilibria of a system of gas, magnetic fields, and cosmic rays are derived; they emphasize the important role played by the curvature of the field lines. Application to periodic curved equilibrium states, related through flux freezing to an unstable, one-dimensional equilibrium of the Parker type, indicates that they are also unstable. We show that the growth rate of the instability, especially of cosmic rays are present, can be much faster than was previously thought.