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Interaction between an emerging flux region and a pre-existing fan-spine dome observed by IRIS and SDO

Yang, Shuhong; Zhang, Jun; Jiang, Fayu

We present multiwavelength observations of a fan-spine dome in the active region NOAA 11996 with the Interface Region Imaging Spectrograph (IRIS) and the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory (SDO) on 2014 March 9. The destruction of the fan-spine topology owing to the interaction between its magnetic fields and a ne…