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The Formation and Magnetic Structures of Active-region Filaments Observed by NVST, SDO, and Hinode

Yan, X. L.; Xue, Z. K.; Wang, J. C. +4 more

To better understand the properties of solar active-region filaments, we present a detailed study on the formation and magnetic structures of two active-region filaments in active region NOAA 11884 during a period of four days. It is found that the shearing motion of the opposite magnetic polarities and the rotation of the small sunspots with nega…