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Formation and eruption of sigmoidal structure from a weak field region of NOAA 11942

By N. Vasantharaju and others
Using observations from Solar Dynamics Observatory, we studied an interesting example of a sigmoid formation and eruption from small-scale flux canceling regions of active region (AR) 11942. Analysis of HMI and AIA observations infer that initially the AR is compact and bipolar in nature, evolved to sheared configuration consisting of... Show more
February 21, 2019
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Formation and eruption of sigmoidal structure from a weak field region of NOAA 11942
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