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首页> 外文期刊>Solar-Terrestrial Physics >Investigating tensor anisotropy of cosmic rays during large-scale solar wind disturbances
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Investigating tensor anisotropy of cosmic rays during large-scale solar wind disturbances

机译：研究大规模太阳风扰动期间宇宙射线的张量各向异性

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The observable anisotropy of cosmic rays has first been decomposed into zonal harmonics and components of vector and tensor anisotropy. We examine Forbush decreases in cosmic rays that occurred in November 2001 and November 2004. It is shown that at the beginning of a Forbush decrease an antisunward convective current of cosmic rays predominates; and during the recovery phase, a sunward diffusive current of particles along the interplanetary magnetic field dominates. During the phase of intensity drop, short-time decreases in the second zonal harmonic take place. These decreases occur with abrupt changes of the interplanetary magnetic field intensity and solar wind speed. During the passage of large-scale solar wind disturbances, the tensor anisotropy behaves in a complicated way. To explain its behavior, a further detailed investigation is required.
机译：宇宙射线的可观察到的各向异性首先被分解为纬向谐波以及矢量和张量各向异性的组成部分。我们研究了2001年11月和2004年11月发生的宇宙射线的Forbush减少。研究表明，在Forbush减少的开始，宇宙射线的逆向对流是主要的;在恢复阶段，沿行星际磁场的粒子向阳扩散电流占主导地位。在强度下降阶段，二次谐波在短时间内下降。这些降低是随着行星际磁场强度和太阳风速的突然变化而发生的。在大规模太阳风扰动通过期间，张量各向异性表现得很复杂。为了解释其行为，需要进行进一步的详细调查。

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