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Probability of Field-Aligned Currents Observed by the Satellite Cluster in the Magnetotail

Liu, Zhen-Xing; Shi, Jian-Kui; Cheng, Zheng-Wei +1 more

Field-aligned current (FAC) density distribution at the plasma sheet boundary layers is statistically studied. The FAC is calculated by the so-called curlometer technique with the data from FGM onboard the four Cluster spacecraft in 2001. By calculation we obtain a large number of FAC samples. In the samples, most of calculated FAC densities were …