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Nonlinear analysis of solar wind parameters
Astrophysics and Space Science ( IF 1.9 ) Pub Date : 2020-03-01 , DOI: 10.1007/s10509-020-03757-x
K. Kiran , K. C. Ajithprasad , V. M. Ananda Kumar , K. P. Harikrishnan

We have analyzed time series of solar wind speed, density, temperature and interplanetary magnetic field observed by ‘Advanced Composition Explorer’ (ACE) at the Earth orbits during solar maximum and minimum using nonlinear time series tools. Evidence for deterministic nonlinearity is present in all solar wind parameters. The dimension of the attractor obtained from each solar wind parameters varies from 2.5 to 4.5. Our result suggests that this variation is due to a different amount of noise in the solar wind parameters. We have also found that the dynamics of solar wind is almost identical during solar maximum and minimum at 1 AU. Our result supports the interaction of neighboring individual flow during its evolution from Sun and 1 AU.

中文翻译:

太阳风参数的非线性分析

我们使用非线性时间序列工具分析了“高级成分探测器”(ACE)在太阳极大值和极小值期间在地球轨道上观测到的太阳风速、密度、温度和行星际磁场的时间序列。确定性非线性的证据存在于所有太阳风参数中。从每个太阳风参数获得的吸引子尺寸从 2.5 到 4.5 不等。我们的结果表明,这种变化是由于太阳风参数中的噪声量不同造成的。我们还发现,在 1 天文单位的太阳极大值和极小值期间,太阳风的动力学几乎相同。我们的结果支持邻近个体流在从太阳和 1 天文单位演化过程中的相互作用。
更新日期:2020-03-01
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